Biooxidation of high arsenic gold concentrate with arsenopyrite type

CUI Richeng; YANG Hongying; ZHANG Guping; MA Yurui; FAN Jin; LI Kefeng

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Biooxidation of high arsenic gold concentrate with arsenopyrite type

更新时间：2025-12-10

- Biooxidation of high arsenic gold concentrate with arsenopyrite type
- CIESC Journal Issue 12, Pages: 3090-3094(2008)
- 作者机构：
  
  东北大学材料与冶金学院,辽宁,沈阳,110004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 December 2008，
  
  Published：05 December 2008
- 稿件说明：
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CUI Richeng, YANG Hongying, ZHANG Guping, et al. Biooxidation of high arsenic gold concentrate with arsenopyrite type[J]. CIESC Journal, 2008, (12): 3090-3094.
DOI：

CUI Richeng, YANG Hongying, ZHANG Guping, et al. Biooxidation of high arsenic gold concentrate with arsenopyrite type[J]. CIESC Journal, 2008, (12): 3090-3094. DOI：

摘要

通过毒砂型高砷金精矿和单矿物纯毒砂的氧化对比摇瓶试验，发现由于金精矿中黄铁矿的存在促进了矿物的脱砷效率，脱砷速度明显高于纯毒砂。经过10 d和15 d的细菌氧化脱砷，金精矿和毒砂的最终脱砷率分别达到93.90%和64.45%。对毒砂氧化渣的显微镜观察以及XRD衍射分析发现，毒砂颗粒外壁被氧化过程中产生的黄氨铁矾沉淀所覆盖，隔绝了它与外界环境的接触，最终导致了毒砂氧化速度缓慢，脱砷效果不够彻底。

Abstract

In this paper

contrast flask bacterial tests of high arsenic gold concentrate with arsenopyrite type and pure arsenopyrite mineral showed that the pyrite in the concentrate promoted the efficiency of dearsenication rate of the mineral

it was significantly higher than pure arsenopyrite.After 10 d and 15 d of bacterial oxidation of dearsenication

the final dearsenication rates of gold concentrate and arsenopyrite mineral were 93.90% and 64.45%

respectively.Microscope observation and XRD diffraction analysis of arsenopyrite oxide slag showed that arsenopyrite was covered with NH4Fe3(SO4)2(OH)6 which isolated arsenopyrite from its environment.This phenomenon eventually led to the slow oxidation rate of arsenopyrite and inadequate dearsenication effect.

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