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中国科技核心期刊

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期刊导读

含金焙砂超能活化预处理—环保体系浸金研究

  • 作者:
  • 郭学益|陈汝璨|张磊

  • 作者单位:
  • (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)
  • 基金项目:

  • 国家自然科学基金项目(52404373)
  • 详细信息:

  • 作者简介:
  • 郭学益(1966—),男,教授,博士,研究方向为有色金属资源循环及先进材料制备等;E‑mail:xyguo@ csu. edu. cn
  • 通讯作者:
  • 张磊(1991—),男,博士,副教授,研究方向为有价金属清洁提取及固废无害化处理;E‑mail:zhang_lei@csu. edu. cn
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Study on superactivation pretreatment-environmentally friendly gold leaching from gold‑bearing roasting slag

  • English Author:
  • Guo Xueyi¹, ², Chen Rucan¹, ², Zhang Lei¹, ²

  • Unit:
  • (1. School of Metallurgy and Environment, Central South University; 2. China Clean Metallurgy Engineering Research Center, China Nonferrous Metals Industry Association)
  • 摘要
  • 在线预览
  • 参考文献

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一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襄的金相,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25C、环保提金剂用量1.2g/L、活性炭用量30g/L、液固比4、反应时间3h、空气流量2.0L/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。


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

Abstract:

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-bearingroasting slag, overcoming inefficiencies  in traditional gold recovery.  An enviromentally friendly  leaching agent was employed for clean gold extraction. Under optimal conditions: 25 °C, 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.

Keywords:

goll-bearing roasting slag: superactivation; environmentally friendly gold leaching: non-cyanide gold extraction; clean gold extraction; pretreatment