含金焙砂超能活化预处理—环保体系浸金研究  

Study on superactivation pretreatment-environmentally friendly gold leaching from gold‑bearing roasting slag

作　　者：郭学益 陈汝璨 张磊 Guo Xueyi;Chen Rucan;Zhang Lei(School of Metallurgy and Environment,Central South University;China Clean Metallurgy Engineering Research Center,China Nonferrous Metals Industry Association)

机构地区：[1]中南大学冶金与环境学院 [2]中国有色金属工业协会中国清洁冶金工程研究中心

出　　处：《黄金》2025年第3期25-30,共6页Gold

基　　金：国家自然科学基金项目(52404373)。

摘　　要：针对氰化法提金工艺存在的氰化物剧毒及环境污染等难题,创新提出超能活化预处理—环保体系浸金新工艺,采用超能活化预处理方法打开含金焙砂中被包裹的金相,有效解决含金焙砂提金不理想的问题。采用环保提金剂对超能活化样品实现清洁提金,在温度25℃、环保提金剂用量1.2 g/L、活性炭用量30 g/L、液固比4、反应时间3 h、空气流量2.0 L/min、搅拌速度400 r/min、pH值11.0~11.5的最优条件下,金浸出率达96.2%左右,可实现含金焙砂的高效清洁提取。To address the challenges of cyanide toxicity and environmental pollution in conventional cyanidation gold extraction,this study proposes an innovative process combining superactivation pretreatment with an environmentally friendly leaching system.The superactivation pretreatment effectively exposes encapsulated gold phases in gold-bearing roasting slag,overcoming inefficiencies in traditional gold recovery.An enviromentally friendly leaching agent was employed for clean gold extraction.Under optimal conditions:25℃,enviromentally leaching agent dosage of 1.2 g/L,activated carbon dosage of 30 g/L,liquid-solid ratio of 4,reaction time of 3 h,air flow rate of 2.0 L/min,stirring speed of 400 r/min,and pH 11.0-11.5,gold leaching efficiency reached 96.2%,enabling high-yield and eco-friendly extraction from gold-bearing roasting slag.

关 键 词：含金焙砂 超能活化 环保浸金 非氰提金 清洁提金 预处理 

分 类 号：TF831[冶金工程—有色金属冶金]