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Taking Anning Phosphate Mine in Yunnan Province as the research object, this study focuses on the low P2O5 grade (20.00%), high MgO content, complex ore composition, useful minerals such as apatite, and main gangue minerals such as dolomite, quartz, and other silicate minerals. Taking advantage of the characteristic that different numbers of unsaturated bonds contained in mixed unsaturated fatty acids, which have higher solubility than single unsaturated fatty acids, can improve the hydrophobicity of dolomite, a compound mixed fatty acid reagent (ZP) was prepared by compounding oleic acid, linoleic acid, and linolenic acid at a ratio of 50% + 30% + 20%, and this reagent was used as collectors for reverse flotation of the phosphate ore. The influence of collectors on the wettability of dolomite and the effect of compound agent ZP on the particle size of collector micelles were studied. Based on single-factor experimental research, both open-circuit and closed-circuit tests were conducted. The results show that: the composite agent ZP had a better hydrophobicity effect on dolomite than that of single oleic acid reagent. When the dosage of ZP was 200 mg/L, the contact angle of dolomite could reach 74.62°. ZP collector has a higher solubility than oleic acid, which can improve flotation efficiency; By using a process of one coarse selection, three fine selections, and three sweep selections for reverse flotation, a closed-circuit test can ultimately obtain concentrate indicators with a P2O5 yield of 59. 23%, P2O5 grade of 28.36%, MgO grade of 0.63%, and P2O5 recovery rate of 80.16%. [ABSTRACT FROM AUTHOR]

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Copyright of Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The TFe grade of the mixed magnetic concentrate from a Liaoning iron ore processing plant is 53.92%. The main iron minerals are magnetic/hematite and the main gangue minerals are quartz. TD-II collector is used for reverse flotation in tins concentrator, but the pulp temperature Is 40 °C, winch leads to waste of resources. In order to improve the production index, a new low temperature collector DZ with multipolar base independently developed by Northeastern University Is used for reverse flotation of the mixed magnetic concentrate in thus concentrator. The effects of DZ dosage, pulp pH value, flotation temperature, starch dosage and CaO dosage on the flotation behavior of the mixed magnetic separation concentrate were investigated. For the mixed magnetic concentrate with TFe grade 53.92%, a new low temperature collector DZ was used under the conditions of flotation temperature 15 ± 2 °C, pulp pH value 9, depressant starch dosage 750 g/t, collector DZ dosage 150 g/t, and no activator was added. The flotation lockedcycle test of "one roughing, two cleanings and three scavergings" showed that a flotation concentrate with TFe grade 65.24% and iron recovery of 93.03% can be obtained, whereas under the conditions of flotation temperature 40 ± 2°C, pulp pH value 11, starch dosage 900 g/t, CaO dosage 900 g/t and collector TD-II dosage 350 g/t, a flotation concentrate with TFe grade 65.47% and iron recovery 90.71% can be obtained through the lockedcycle flotation test of "one roughing, one cleanings and three scavengings". The product inspections for the flotation concentrates obtained from the new low-temperature collector DZ and from the field reagent TD-II were carried out. By comparing the flotation results with the product inspection, t can be found that the new low-temperature collector DZ is a high-efficiency and high-selectivity low-temperature flotation collector, which can effectively solve the problem of energy waste in the reverse flotation process of the concentrator, save the beneficiation cost and improve the resource utilization efficiency. [ABSTRACT FROM AUTHOR]

Super iron concentrate, as a new type of high value-added material, has enormous development potential. The TFe grade of a magnetite ore in Gongchangling is 60.96%. The content of the main impurity SiO2 in the ore Is 33.21%, and the content of harmful elements P and S is relatively low. The iron element mainly exists in magnetite, accounting for 95.05%. The particle size of magnetite in the ore is coarse, mainly distributed in the size range + 0.074 mm, and the distribution rate being 82.37%. Magnetite in the sample occurs mainly produced in form of free particles. Some line-grained quartz embedded in magnetite in the form of inclusions, reverse inclusions and line veins, which difficult to be completely liberated. In order to realize a high value utilization of the ore, the experimental study on the preparation of super iron concentrate has been carried out. A processing flowsheet of "stage grinding & stage magnetic separation-reverse Rotation to desiliconization" has been adopted. Under the process parameters of the first-stage grinding fineness of 65% - 0.074 mm, the second-stage grinding fineness of 90% -0.025 mm, and the dosage of roughing and cleaning collectors in reverse notation 25 g/t. A high quality super iron concentrate wkh TFe grade 72.35% and Fe recovery 81.03%, SiO2 content 0.17%, and acid insoluble substance of 0.19% and trace amount of other impurities has been obtained. In addition, a high purity iron concentrate wkh TFe grade 71.37% and Fe recovery 6.07%, as well as an ordinary iron concentrate wkh TFe grade of 60.26% and Fe recovery of 6.71% have also been obtained. This technology provided a basis for the high value and grading utilization of the magnetite ore. [ABSTRACT FROM AUTHOR]

The TFe grade of an ordinary magnetite in Hebei Province is 65.25%, and the ore properties and structure are simple, which has the potential to prepare ultrapure iron concentrate. In this study, the process mineralogy of the raw ore was studied by multi-element and X-ray diffraction pattern, phase analysis and other methods, and the purification test was carried out on this basis. The results show that after the rough separation of the raw ore with a weak magnetic separation, the magnetic separation column concentrate with a TFe grade of 71.31% and the iron tailings with a TFe grade of 68.12% and a yield of 3.32% were obtained by weak magnetic separation and re-separation and magnetic separation column selection with a grinding fineness of -0.038 mm accounting for 85%. By further investigating the influence of the pharmaceutical system and technological process on the grading and recovery of iron ore concentrate, a suitable pharmaceutical system was determined. Then, the magnetic separation column concentrate was tested by 1 coarse and 3 fine reverse flotation silica reduction process, and finally the ultrapure iron concentrate containing TFe grade of 71.95% and the comprehensive recovery rate of 80.50% was obtained, and the TFe grade of flotation tailings was 68.17%, which met the standard of ordinary iron ore concentrate. Through the analysis of the chemical composition of the samples and the determination of the residual agent, it is further proved that the process can realize the preparation of ultrapure iron concentrate. Under the condition of a tail-throwing rate of 10.79%, 73.04% of the raw ore sample is converted into ultra-pure iron concentrate, which has important guiding significance for the preparation of ultra-pure iron concentrate in this area, and also provides a certain reference value for the research on the preparation of ultra-pure iron concentrate from magnetite in other parts of China. [ABSTRACT FROM AUTHOR]

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This is an article in the field of mining engineering. Ca2+ and Mg2+ are easily dissolved from fluorapatite and dolomite in the acid medium of reverse flotation, and there is a "cumulative effect" in the process of backwater circulation, which has an adverse effect on the flotation indexes. Taking fluorapatite, dolomite and quartz as the research objects, the effect of different recycle times of backwater on the flotation recovery of three single minerals was studied. The results showed that when pH value was 5, the recovery difference between dolomite and fluorapatite decreased from 72.21% to 64.19%, and the recovery of quartz maintained at about 10%; When the number of cycles reached 5, the recovery difference between dolomite and fluorapatite slightly increased to 69.74%, and the recovery of quartz slightly decreased to 11.22%. In this study, the mechanism of dissolved ions in backwater for three kinds of single minerals was revealed by measuring the number of dissolved ions, zeta potential of mineral surface and ions adsorption capacity of mineral surface under backwater circulation system.

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This is an essay in the field of mineral processing engineering. The process mineralogy study of a manganese carbonate ore from Hubei Province shows that the main valuable minerals of this ore are kutnohorite, calcimangite and a small amount of pyrolusite with fine monomer dissociation, the gangue minerals are dolomite, quartz and mica. The present manganese carbonate ore belongs to refractory low-grade manganese carbonate ore with high calcium and phosphorus. There are few studies on this type of manganese ore, thereby the treatment process is complicated with the low product grade and the high cost. The mineral processing results of this study reveal that, under the condition of 90% of the products from stage grinding to -74 μm, manganese minerals were recovered by magnetic separation through the process of cleaning mixed concentrate with one roughing and one cleaning tailings, and further enriched by one-stage reverse flotation desilication. Finally, a manganese concentrate with Mn grade of 27.10%, P/Mn ratio of 0.009 and Mn recovery of 58.21% was obtained, which can be mixed with other low-phosphorus manganese concentrates as the metallurgical industrial raw material to meet the industrial requirements.

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Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to realize the desilication of phosphate rock by reverse flotation, the selection of appropriate amine collectors and reasonable flotation conditions are the key to the desilication of phosphate rock by reverse flotation. Through flotation experiments, the collection effects of four different amine collectors, including fatty amines, amine ethers, ether amines and oxidized amines, on quartz were compared. The experiments show that different amine collectors have different flotation properties for collophanite at the same pH value. In weakly alkaline medium, the basic order of the collection capacity of fatty amine reagents for SiO2 is as follows: the flotation collection performance of coconut diamine for silicate minerals is better than that of n-octylamine, dodecylamine, coconut diamine and isothirteen amine, but the loss rate of phosphorus by isothirteen amine reagent is lower, followed by coconut diamine, dodecylamine, coconut oil amine and n-octylamine had greater loss of phosphorus. The collection capacity of amine ethers for SiO2 is as follows: the collection capacity of coconut amine polyoxyethylene ether for silicate minerals is stronger than that of dodecylamine polyoxyethylene ether, and the P2O5 loss rate of flotation tailings of dodecylamine polyoxyethylene ether is higher than that of coconut amine polyoxyethylene ether; The collection capacity of ether amine reagents for SiO2 is as follows: the collection capacity of isodecanetramine for silicate minerals is weaker than that of C10 ether amine, and the loss rate of P2O5 of isodecanetramine flotation tailings is higher than that of C10 ether grease; The test results show that the flotation performance of the same type of amine reagent is basically similar, and there are some small differences. The collection capacity of fatty diamine with the same carbon chain composition for collophanite is stronger than fatty monoamine. The basic order of flotation performance from strong to weak is diamine > monoamine > ether amine > amine ether > oxide amine.

In terms of the iron concentrate, the TFe grade is 65.50% and mainly gangue is quartz with the content of 4.82%. Additionally, the content of harmful impurity, sulphur and phosphor, is low. Following grinding-magnetic separationis able to enhance the mFe content and grade of concentrate for the reason that the content of mFe is 98.74% and other iron phase is nonmagnetic. The process of prescreening-grinding-classification-magnetic separation-reverse flotation is adopted to the super-grade iron concentrate experimental study of an iron concentrate from Sichuan. When the screen size is 0.074 mm and grinding fitness is -0.038 mm 90%, using the thenanoceramic balls as milling medium, super-grade iron concentrate with yield 24.23%, TFe grade 71.71%, quartz content of 0.16%, acid insoluble content of 0.16% could be obtained. In the process, the usage of corn starch is 600 g/t and the usage of collector is 100+50+50 g/t. The process is reasonable and significantly feasibility with low energy consumption and simple reagent system. Additionally, the process could obtain normal iron concentrate with the yield of 72.25% and TFe grade of 65.47% which could be considered as good iron concentrate product to sell.

Through the single mineral flotation test, the flotation behavior of magnesite and dolomite in the dodecylamine flotation system and the influence of the regulator Fe3+ on the floatability of the two minerals were studied. Based on Fourier Infrared Spectroscopy (FTIR) and contact angle test, the mechanism of Fe3+ was studied. The flotation test results show that in the dodecylamine system, under the natural pH condition of the pulp, the floatability of dolomite is better than that of magnesite. There is a certain floatation difference between magnesite and dolomite, and the addition of a small amount of Fe3+ significantly improves the floatation difference of the two minerals. Infrared spectroscopy test results show that the adsorption of dodecylamine on the surface of dolomite is mainly electrostatic adsorption, dolomite CO32− out-of-plane bending vibration and CO32− in-plane bending vibration are almost unchanged, and -CH3 and -CH2 are symmetrical and asymmetrical. The peak value of extensional vibration increases. The contact angle test results show that the addition of a small amount of Fe3+ enhances the hydrophobicity of dolomite, which has the effect of activating dolomite.

A small amount of magnetite is associated with the Shizhuyuan Tungsten Molybdenum Bismuth Fluorite polymetallic ore, the total iron grade is 7.15%, the iron grade in the magnetite is 1.68%, which is 23.50% of the total iron. “Shizhuyuan method” is used in the whole beneficiation process of the tungsten-molybdenum-bismuth-fluorite polymetallic ore, in which the magnetite is preferentially removed by medium magnetic separation before recovering tungsten, molybdenum, bismuth, fluorite and other useful minerals, in order to avoid the interference of magnetite to the subsequent separation operation, the coarse magnetite concentrate is produced. In order to further improve the comprehensive utilization rate of mineral resources and excavate the new economic growth point of the mining enterprises, it is decided to carry out the experimental study on beneficiation of coarse concentrate of magnetite ore. Through the study on the properties of the magnetite coarse concentrate, it is found that the magnetite coarse concentrate has fine particle size distribution and high magnetic sulfur content. In order to improve the quality of magnetite concentrate, the grade of iron in magnetite concentrate must be raised, and the sulfur content in magnetite concentrate must be reduced. To raise the iron grade of magnetite concentrate, fine grinding method is used to separate magnetite from its monomer, and then the iron grade of magnetite concentrate can be raised by weak magnetic separation, while to reduce the sulfur content of magnetite concentrate, reverse flotation is generally used to remove sulfur, it is necessary to find out the process flow and parameters of reverse flotation desulfurization suitable to the property of the ore in order to ensure the efficient removal of magnetic sulfur from magnetite ore. After the systematic experimental study on beneficiation, it is determined that the final magnetite concentrate quality can be greatly improved by first demagnetizing, then by reverse flotation, and then by stage grinding. When the magnetite rough concentrate grade TFe 38.19% and S 4.51% , the final magnetite concentrate grade TFe 60.85% , S 0.99% and iron recovery 72.13% can be obtained. The process has been applied in the field, and good results have been achieved by optimizing the configuration of the field flow structure.

In view of the difficulty and low efficiency of fine hematite flotation, nanobubbles with special interfacial properties were applied to reverse the flotation of hematite to improve the flotation behavior and separation performance of fine particles. The Box-Behnken response surface method was used to design the experiments and optimize the reagent dosage for reverse nanobubble flotation of hematite from the flotation feed at Anqian Mineral Processing Plant by specifically analyzing the effect of each factor and the interactions between factors on the flotation performance. The results show that collector TD-Ⅱ and corn starch had more significant impacts on grade and recovery than lime and the interactions between starch, lime, and collector TD-Ⅱ had significant effects on iron grade. The iron recovery is 82.27 % and the iron grade is 67.32 % for the concentrate when 3.0 kg/t corn starch, 1.5 kg/t lime, and 0.78 kg/t collector TD-Ⅱ are added. The kinetic flotation experiments confirm that the introduction of nanobubbles in flotation can improve flotation kinetics and concentrate recovery. The application of the nanobubble flotation process will help resolve the difficulty in the efficient flotation of fine particles, which is of great significance to improving the technical performance indicators and economic benefits of the mineral processing plant. [ABSTRACT FROM AUTHOR]

Mineral flotation test， combined with laser particle size test， scanning electron microscope (SEM)， mineral surface potential and XPS (X-ray photoelectron spectroscopy) were used to study the behavior and mechanism of polyoxyethylene oxide (PEO) flocculation of fine kaolinite in the process of hematite reverse flotation. The flotation test showed that the addition of PEO improves the mineral recovery of kaolinite and the separation efficiency of artificial mixed ore， which is conducive to promoting the reverse flotation separation of hematite and kaolinite. The results of laser particle size test and SEM showed that PEO does not flocculate hematite， but flocculates kaolinite particles to increase their apparent particle size. Zeta-potential tests and XPS analysis indicated that chemical adsorption of PEO occurs on the surface of kaolinite particles， and its Zeta-potential is positively shifted. Therefore， PEO has certain guiding significance in the study of reverse flotation separation of hematite and kaolinite. [ABSTRACT FROM AUTHOR]

Lignite is extremely hydrophilic; thus it is difficult to upgrade its quality by conventional flotation. In this study, cetylpyridinium chloride monohydrate (CCM) was used as the collector for quartz. The effect of CCM dosage on reverse flotation of Shengli lignite was investigated by different slurry mixing methods. And the dissolution properties of CCM and its mechanism of collecting quartz were studied via surface tensitometer and FTIR. The flotation results show that, due to the strong hydrophilicity of Shengli lignite, the performance of direct flotation is poor. With reverse flotation, the yield of clean coal and the flotation perfection are obviously improved. Besides, the reverse flotation with the zero-conditioning is more efficient than the conventional one. FTIR results show that the adsorption of CCM barely change the functional groups of quartz, indicating that CCM was adsorbed on the surface of quartz through electrostatic adsorption to collect quartz. Meanwhile, CCM adsorption significantly reduces the content of hydroxyl oxygen-containing functional groups of quartz, leading to an increase of the content of hydrophobic groups such as long-chain alkyl. As a result, the hydrophobicity of quartz was improved, and the reverse flotation of lignite was promoted.

The former flotation process of Wangji Collophanite（Ph1）is direct-reverse flotation processes. In the production practice, there are some problems such as high grade of final tailings, low yield and recovery rate. In this paper, through test research and technological transformation, the original direct-reverse flotation processes was changed into single reverse flotation process, and the production process index was improved ,the recovery was improved by 9.78 percentages.

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Through the single mineral flotation test, the flotation behavior of magnesite and dolomite in the dodecylamine flotation system and the influence of the regulator Fe3+ on the floatability of the two minerals were studied. Based on Fourier Infrared Spectroscopy (FTIR) and contact angle test, the mechanism of Fe3+ was studied. The flotation test results show that in the dodecylamine system, under the natural pH condition of the pulp, the floatability of dolomite is better than that of magnesite. There is a certain floatation difference between magnesite and dolomite, and the addition of a small amount of Fe3+ significantly improves the floatation difference of the two minerals. Infrared spectroscopy test results show that the adsorption of dodecylamine on the surface of dolomite is mainly electrostatic adsorption, dolomite CO32- out-of-plane bending vibration and CO32- in-plane bending vibration are almost unchanged, and -CH3 and -CH2 are symmetrical and asymmetrical. The peak value of extensional vibration increases. The contact angle test results show that the addition of a small amount of Fe3+ enhances the hydrophobicity of dolomite, which has the effect of activating dolomite. [ABSTRACT FROM AUTHOR]

Copyright of Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper takes the lignite coal sample from Baori Hiller of Inner Mongolia as the research object.Through the coal flotation reverse flotation test and orthogonal test, the surface characteristics and flotation characteristics of lignite were analyzed and studied, and the types, dosages and processes of the lignite flotation were investigated.The results showed that the de-flotation effect of dodecyl amine(DDA)on lignite was better than that of octadecyl amine(ODA)and cetyltrimethylammonium bromide(CTAB).When the DDA dosage is 1 400 g/t, the reverse flotation efficiency is 6.89 %, the floating tail minimum ash is 11.23 %, the floating tail yield is 84.46 %, and the maximum difference between the floating fine and floating tail ash is 5.25 %. When the dosage of DDA is fixed and the dosage of dextrin is 1 600 g/t, the floating ash is divided into 15.58 %, the floating ash is 10.77 %, and the difference is 4.81 %; The effect of the amount of DDA, dextrin and octanol on the yield of floating tail was not significant, while the effect of DDA on floating tail ash was significant, but the effect of dextrin and octanol on floating tail ash was not significant.For lignite, continuous low-floating(10.20 %)and high recovery(up to 70 %)of clean coal can be obtained by successive multiple reverse flotation processes.Amine collectors have a good collection effect on minerals such as quartz, silicate and carbonate in lignite due to their physical adsorption and complex adsorption.In the pulp, the hydrogen atoms in the dextrin interact with a large number of strongly electronegative atoms such as oxygen and nitrogen present on the surface of the lignite to form a strong hydrogen bond, thereby forming a hydrophilic film on the surface of the coal particles, so that the coal particles become hydrophilic and suppressed.

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

An iron ore has the characteristics of many kinds of minerals and high content of both aluminum and silicon. The contents of TFe, MFe, SiO2 and Al2 O3 are 24.94%, 3.99%, 33.81% and 13.75% respectively. The results of chemical phase analysis of iron show that the percentage of iron in magnetite is 16.00%, in hematite is 36.49%, and in ferric silicate is 41.34%. In order to make full use of the ore resources, the technological flowsheet of low intensity magnetic separation - high intensity magnetic separation - reverse flotation and new collector BK448 were used in the beneficiation test, and the final indexes were obtained as follows: the iron grade of iron concentrate 1 was 65.45% and the iron recovery was 15.43%, the iron grade of iron concentrate 2 was 60.86% and the iron recovery was 31.42%. In a word, the iron ore in the magnetite and hematite in the total iron share of 42.49%, the total iron recovery of 46.85% of the better indexes. [ABSTRACT FROM AUTHOR]

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Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A high-magnesium phosphate ore in Hubei is a silicon-calcium sedimentary phosphate ore with high MgO content, which is difficult to separate. In this paper, the effects of pH value of flotation pulp, the type of collector and the ratio of mixed acid on the separation of collophanite and dolomite were studied. The results show that when pH = 4.8, using GYP collector with better selectivity and mixed acid (sulfuric acid : phosphoric acid=1 : 2) as depressant, the high-quality phosphate concentrate with P2O5 grade of 33.6%, P2O5 recovery of 96.79% and MgO content of 0.74% can be obtained in the closed-circuit test, and the depressant cost is reduced by about 30%. [ABSTRACT FROM AUTHOR]

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Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper optimized the synthesis conditions such as molar ratio, temperature and time by examining quartz recovery and the active content of quaternary ammonium. The reverse-flotation results using roast-magnetite separation of Jiugang iron show that a concentrate with a grade of 56.54% and a recovery rate of 77.33% are obtained using M-N as collector. At 5-30℃, the reverse flotation result is stable, as well as the low-temperature resistance is excellent. Selectivity of M-N is superior to the traditional collector dodecylamine and ether amines. The result of Zeta potential and infrared spectroscopy reveals that the successful separation effect of M-N is due to electrostatic adsorption and hydrogen bonding on quartz.

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)