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Results are given for reconstruction and modernization of sintering machine AKM-312/336 No. 7 of Iron and Steel Works ArcelorMittal Temirtau (previously Karaganda Metallurgical Combine). The sintering machine gas exhaust path is reconstructed: the first stage of the gas cleaning system is dismantled, i.e., the dirty gas collector, 28 TsN-15 cyclones and the scraper conveyor, and the semi-clean gas collector is replaced by an extended sectional collector with 32 dust chambers and two valve gates, under which a rubber conveyor is placed. The unit for loading sinter into the linear cooler is modernized. The planned number of multicyclone battery cyclones is restored (from 780 to 960) and a 'zero' vacuum chamber is added beneath the ignition hearth. Stationary throttling devices are installed in the zero and first vacuum chamber connecting pipes. As a result of reconstruction, the sintering area of the sintering machine increased from 336 to 348 m and the charge bed height is higher by 60 mm compared with the rest of the sintering machines, and according to data of May 2016 the specific productivity of the sintering machine is increased by 44.4%, gas consumption is reduced by 70%, and solid fuel for 2016 is reduced by 7.1% compared with the rest of the sintering machines. [ABSTRACT FROM AUTHOR]

Results are given for the reconstruction and modernization of sintering machine AKM-312/336 No. 7 of ArcelorMittal Temirtau (formerly Karaganda Metallurgical Combine). The gas exhaust conduit of the sinter machine is reconstructed: the first stage of the gas cleaning system within the composition of the 'dirty gas' collector, 28 TsN-15 cyclones and two scraper conveyers are dismantled, and the 'semiclean gas' collector with 32 dust chambers and two gate valves have been replaced, beneath which a rubber conveyer has been installed. The following have been modernized: a charge drum-mixer, two charge drum pelletizers, a charge loading assembly for the sinter machine, an ignition hearth, and an assembly for charging sinter into a linear cooler. A planned number of multicyclones (from 780 to 960) of two battery cyclones is restored, and a 'zero' vacuum chamber is installed beneath the ignition hearth. Stationary throttling devices are mounted within connections of the 'zero' and first vacuum chambers. The first batch of massive self-cleaning grates is manufactured and tested instead of the existing light grate bars. As a result of reconstruction and modernization, the sinter machine operating area is increased from 336 to 348 m, the charge layer from 380 to 450 mm, and sinter specific productivity is increased by ~40%; gas consumption is reduced by 70%, solid fuel consumption by 7% compared with other sinter machines. [ABSTRACT FROM AUTHOR]