自含砷含碳难处理金矿中提金研究──Ⅱ.硫氨脱砷-铜氨催化氧化-氰化  

EXTRACTION OF GOLD FROM REFRACTORY GOLD ORE CONTAINING ARSENIC AND CARBON──Ⅱ. Dearsenication with Sulfur in Ammonia Water－Catalytic Oxidation with Cu Ion in Ammonia Water－Cyanidation

作　　者：夏光祥[1] 石伟[1] 涂桃枝[1] 韩宝玲[1] 杨寒林 

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》1995年第4期302-306,共5页

摘　　要：针对甘肃坪定金矿含金、砷高，脉石碱度高，砷矿物中雌黄、雄黄高的特点，研究了硫氨脱砷－铜氨催化氧化－氰化新工艺，采用了三种新技术，即稀氨水溶解雌黄、雄黄湿法转化为雌黄以及在氨水中氧化时用铜离子作催化剂.本研究为小型实验，结果为其后进行的3kg级扩试所证实。The Pingding gold ore belongs to refractory mineral as floatation and met allurgy are concerned. The composition of sample ore is about 12 g/t Au, 13.5% As, 0.221%orgnic C, high alkaline gangue. 46% of the arsenic is present in form of As2S3 and 38% in AsS.This type of gold ore occurs seldom in the world.In the new patent process developed by the authors three new techniques are adopted.The first is to solve As2S3 in dilute ammonia water; the second is to convert AsS into As2S3by a wet process; the third is a Cu(II)-catalytic oridation in dilute ammonia water.The systematic bench tests, which involve deaxseuication, oxidation and cyaniation arereported in this paper. All the results are furthermore demonstrated by the pilot-scale testwith 3kg ore loaded per batch.

关 键 词：含砷金矿 氨水脱砷 氧化 氰化 铜离子催化氧化 

分 类 号：TF831[冶金工程—有色金属冶金]