Extraction of Chromium from Carbon Ferrochromium Residual Wastes

[摘要] This work reports the problem of processing residual wastes after producing carbon ferrochrome by recycling dust using a hydrometallurgical method with the purpose of extracting the basic component - chromium, The X-ray diffraction analysis results, chemical and granulometric compositions of dust from the carbon ferrochrome production are given, The method for the production of chemical-enrichment concentrate (CEC) by processing ferrous dust is described, with obtaining a middling product - sodium mono-chromate with its further reduction to chromium hydroxide, followed by autoclave leaching, and resulting in the production of chemically enriched chrome concentrate, The plant used for autoclave leaching and filtering is schematically depicted, The smelting process of metallic chromium using the ladle aluminothermic method is described,

[发布机构] Siberian State Industrial University, Kirova str, 42, Kemerovo Region, Novokuznetsk; 654007, Russia^1;Leningradskaya str, 26, Kemerovo region, Yurga; 652050, Russia^2;Yurga Technological Institute Branch, Tomsk Polytechnic University, Russia^3

[效力级别] 经济学 [学科分类] 工业工程学

[关键词] Aluminothermic methods;Chromium hydroxide;Ferrochrome production;Granulometric compositions;Hydrometallurgical methods;Metallic chromium;Residual wastes;Smelting process