微细氰化尾矿颗粒絮凝沉降实验研究  

Experimental Study on Flocculation Sedimentation of Fine Cyanide Tailing Particles

作　　者：刘娅[1,2] 丁剑[1,2] 付国燕[1,2] 钱鹏[1] 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》2015年第4期91-96,共6页Gold Science and Technology

基　　金：国家高技术研究发展计划(863计划)"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"金矿短流程磨浮工艺研究及示范"(编号:2012BAB08B04)联合资助

摘　　要：微细氰化尾矿颗粒沉降速度慢,脱水困难,需借助絮凝剂改善其沉降特性。文中主要将阳离子絮凝剂HLM和非离子絮凝剂PAM对3种平均粒径分别为30,14,3μm的氰化尾矿悬浮液进行了絮凝沉降及除浊实验,确定其最佳投加量,并对比了2种絮凝剂对不同粒度尾矿的絮凝性能。结果显示,对于3种不同粒度分布的悬浮液,HLM的絮凝效果均优于PAM,并且尾矿颗粒的粒径越小,阳离子絮凝剂的絮凝优势就越明显。Fine cyanide tailing particles have slow settling speed and it is difficult for de-watering.Therefore,it is needed to use flocculant to improve the settlement characteristics of this kind of tailings.In this paper,the optimum dosage of cationic flocculant HLM and nonionic flocculant PAM are determined by the sedimentation and turbidity removal experiment of cyanide tailings suspensions,the average particle size of which are 30 μm, 14 μm,3 μm respectively.In addition,the flocculation performance of two flocculants for different particle size of suspensions is compared.The results show that the flocculation effect of HLM is better than PAM for the three different particle size distribution of suspension.In addition,the smaller the particle size is,the more obvious the flocculation advantage of cationic flocculant is.

关 键 词：微细颗粒 氰化尾矿 絮凝沉降 絮凝剂 

分 类 号：TD926.4[矿业工程—选矿]