氨性催化氧化-氰化法处理含砷难浸金矿的研究(Ⅰ)  

STUDY ON THE EXTRACTION OF GOLD FROM REFRACTORY GOLD ORE CONTAINING ARSENIC WITH AMMONIACAL CATALYTIC OXIDATION-CYANIDATION PROCESS (Ⅰ)

作　　者：石伟[1] 夏光祥[1] 涂桃枝[1] 方兆珩[1] 

机构地区：[1]中国科学院化工冶金研究所,北京100080

出　　处：《化工冶金》1996年第1期32-37,共6页

摘　　要：本文提出的氨性催化氧化－氰化法处理含砷难浸金精矿新工艺，其特点是在氨性溶液中以Cu2＋作催化剂，O2作氧化剂，在85℃及200kPa的操作压力下，将毒砂氧化，使其中的金游离出来，固液分离后再进行CILO氰化．对于含有砷锑汞碳的丹寨金精矿，其金品位为16.5～22g／t；金的氰化率可达80～87％.In this paper, a new process, consisting of pressure oxidation in ammoniacal solution followed by cyanidation, was developed for treatment of arsenic refractory gold ores. In the process Cu2+ was used as catalytic agent and O2 gas as oxygenant in a ammoniacal solution at 85℃ and under 200 kPa operation pressure. Since gold was liberated from arsenopyrite in oxidization, the cyanidation process with CILO could be conducted in a great success. A gold percentage extraction of 80~87% as reached for Danzhai Mine gold concentrate containing As,Sb, Hg, C and 16~ 22 g/t Au.

关 键 词：氨性催化氧化 氰化 炼金 浸出 

分 类 号：TF831.032[冶金工程—有色金属冶金]