Increasing leaching rate of gold cyanide of two-stage calcination generated from refractory ore containing arsenopyrite and pyrrhotite

• Published in: Rare metals Vol. 35; no. 10; pp. 804 - 810
• Main Authors: Dang, Xiao-E, Ke, Wen-Shuai, Tang, Chen, Lv, Jun, Zhou, Xue, Liu, Cheng-Peng
• Format: Journal Article
• Language: English
• Published: Beijing Nonferrous Metals Society of China 01.10.2016; Springer Nature B.V
• Subjects: Arsenic; Arsenopyrite; Biomaterials; Calcination; Chemistry and Materials Science; Cyanide process; Cyanides; Dissolution; Energy; Energy consumption; Gold; Gold cyanide; Hematite; High temperature; Leaching; Materials Engineering; Materials Science; Metallic Materials; Metallurgy; Mineralogy; Nanoscale Science and Technology; Oxidation; Physical Chemistry; Plant layout; Pretreatment; Pyrrhotite; Raw materials; Refractory ores; Residues; Roasting; Sulfur; Sulfuric acid; 毒砂; 氰化金; 浸出时间; 煅烧; 矿石; 磁黄铁矿; 酸预处理; 金浸出率; Hematite; Locked gold; Cosolvent B; Pretreatment; Two-stage calcination

For the gold locked within hematite in the two- stage calcination, which leads to a low gold leaching rate, the present work is aiming at pretreating the calcination to selectively dissolve hematite. The calcination was pre- treated by sulfuric acid with cosolvent B. The factors in- fluencing the he...