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Flotation separation of diaspore from kaolinite, pyrophyllite and illite using three cationic collectors
- Source :
- Minerals Engineering. 21:1055-1061
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- The effect of cationic groups on performance of 12-carbon chain collectors in flotation separation of diaspore from kaolinite, pyrophyllite and illite has been investigated by flotation tests and explained by density functional computations. The flotation test results indicated that the separation of diaspore from these aluminosilicate minerals was feasible at strong alkaline conditions by using cationic collectors, dodecylamine chloride (DDAC), dodecyl trimethyl ammonium chloride (DTAC) or dodecylguanidine sulfate (DDGS), respectively. In strong alkaline conditions, these three collectors showed excellent selectivity against diaspore, however, DDGS returned superior collecting ability for aluminosilicate minerals compared with DDAC and DTAC. By using the density functional theory (DFT), we calculated some properties such as the H and N atomic charges and cationic group charges which are related to the reactive behavior of 12-carbon chain collectors at B3LYP/6-31G (D) level. The results of calculations indicated that the efficiencies of these three cationic collectors depend on the investigated parameters, and DDGS is better than DDAC and DTAC as a collector agent. The theoretically obtained results are consistent with the flotation tests.
- Subjects :
- Chemistry
Mechanical Engineering
Inorganic chemistry
Cationic polymerization
Mineralogy
General Chemistry
engineering.material
Diaspore
Geotechnical Engineering and Engineering Geology
Chloride
stomatognathic diseases
Control and Systems Engineering
Aluminosilicate
visual_art
Illite
otorhinolaryngologic diseases
visual_art.visual_art_medium
engineering
medicine
Kaolinite
Froth flotation
Pyrophyllite
medicine.drug
Subjects
Details
- ISSN :
- 08926875
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Minerals Engineering
- Accession number :
- edsair.doi...........b8de904a56fd2483443cfc84ca4ec526