专利名称：Recovery of chromium values发明人：John C. Stauter,Richard T. Um申请号：US05/659390申请日：19760219公开号：US04029734A公开日：19770614
摘要：Chromium values may be recovered from the chromium bearing ores or sourcesby subjecting the chromium bearing source to a roast in the presence of sulfuric acid andan oxidant which contains manganese compounds at temperatures ranging from about200° to about 500. degree. C. followed by leaching, separation and solvent or ionexchange extraction whereby chromium is selectively extracted and recovered.
申请人：UOP INC.
代理人：James R. Hoatson, Jr.,Raymond H. Nelson,William H. Page, II
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