微细浸染型难选金矿两段预处理-非氰化浸出研究  

Experimental Research on Non-cyanide Leaching of Micro-disseminated Gold Ore with Two-stage Pretreatment

作　　者：唐云[1,2] 杨典奇 唐立靖 王莹[1] 

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]贵州大学省级非金属矿产资源综合利用重点实验室,贵州贵阳550025

出　　处：《矿冶工程》2017年第1期60-63,共4页Mining and Metallurgical Engineering

基　　金："十二五"国家科技支撑计划(2012BAB08B06);贵州大学研究生创新基金(研理工2016080)

摘　　要：以微细浸染型金矿为研究对象,直接采用非氰化药剂TL浸出时,浸出率较低。结合TY-TJ氧化体系在废水处理中的成功应用,将该氧化体系应用于微细浸染型金矿的湿法化学预处理。采用TY-TJ氧化、碱两段预处理-非氰化浸出工艺,在TY用量4 kg/t、TJ用量2 kg/t、氧化预处理时间2 h、氢氧化钠用量20 kg/t、碱预处理时间10 h、浸出剂TL用量10 kg/t、浸出时间4 h、液固比3∶1的条件下,金浸出率达89.93%。该工艺具有环境友好、金浸出率高等优点,在微细浸染型金矿开发利用中具有一定应用前景。The micro-disseminated gofd ore is directly processed with non-cyanide （ TL ） leaching process, usually resulting in a low leaching rate. Based on the successful application of TY-TJ oxidation system in wastewater treatment, TY-TJ was firstly adopted in the wet chemical pretreatment of micro-disseminated gofd ore. With a combined processing technique, consisting of two-stage pretreatment （TY-TJ oxidation and alkali） and non-cyanide leaching, the gofd leaching rate reached 89.93% under the foflowing conditions,including 2 h of oxidation pretreatment with the dosages of TY agent and TJ agent at 4 kg/t and 2 kg/1 respectively,10 h of alkali pretreatment with the dosage of sodium hydroxide at 20 kg/t,4 h of non-cyanide leaching with the dosage of leaching TL agent at 10 kg/t, liquid-sofid ratio at 3 ：1. It is found that such processing technique,which is environmentally friendly and can bring in high leaching rate,will find a promising prospect in the development and utilization of micro-disseminated gofd ore.

关 键 词：微细浸染型金矿 预处理 非氰化浸出 金 

分 类 号：TF111[冶金工程—冶金物理化学]