氰化尾渣中抑砷富集硫铁的研究  

The Investigation on the Recovery of Pyrite and Removal of Arsenic from the Cyanide Residues

作　　者：王永良[1] 吕翠翠[1,2] 肖力[1,2] 丁剑[1,2] 付国燕[1,2] 叶树峰[1] 

机构地区：[1]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《黄金科学技术》2016年第4期144-148,共5页Gold Science and Technology

基　　金：国家高技术研究发展计划("863"计划)项目"氰化渣硫铁金梯级分离富集与无害化技术"(编号:2011AA06A104);"十二五"国家科技支撑计划项目"金矿短流程磨浮工艺研究及示范"(编号:2012BAB08B04)联合资助

摘　　要：以某冶炼厂氰化尾渣为研究对象,在富集硫铁的同时去除部分砷。以H_2SO_4作为硫活化剂,采用腐殖酸钠和Ca(ClO)_2组合砷抑制剂对该氰化尾渣进行浮选实验。浮选结果显示,精矿中硫品位可达到48%以上,同时砷品位降低到0.2%以下。结合SEM和XRD分析手段对该浮选结果进行分析,研究了氰化尾渣中砷的赋存状态,并对氰化尾渣中硫砷难以分离的原因进行了初步探讨。Cyanide residue from one smelting plant is used to enrich the pyrite and remove a portion of the arsenic.With the use of sulphuric acid as sulfur activator, the sodium humate and calcium hypochlorite is used as the arsenopyrite combined inhibitor in the flotation experiment.The results show that the sulphur grade in sulfur concentrate is more than 48% ,while the arsenic grade reduces to below 0.2%.The analysis means of SEM and XRD are taken to analyze the occurrence of arsenic in cyanide residues.And the reasons for the difficulty in separation of sulphur and arsenic in cyanide residues are discussed.

关 键 词：氰化尾渣 浮选 富集硫铁 砷抑制剂 

分 类 号：X758[环境科学与工程—环境工程]