含砷金矿微生物预氧化过程强化方法研究进展

邓莎; 刘兆悦; 杨玮; 龙涛; 肖巍

doi:10.13779/j.cnki.issn1001-0076.2021.06.019

含砷金矿微生物预氧化过程强化方法研究进展

1.
西安建筑科技大学资源工程学院，陕西西安 710055

2.
陕西省黄金与资源重点实验室，陕西西安 710055

基金项目:
国家自然科学基金(52004198)；陕西自然科学基础研究计划(2020JQ-666)；陕西省重点研发计划一般项目(2020SF-362)

详细信息

作者简介: 邓莎(1991-)，女，陕西咸阳人，博士，副教授，主要从事微生物冶金及矿产资源综合利用研究，E-mail：dengshaxauat@126.com

通讯作者: 杨玮(1972-)，男，河南三门峡人，博士，教授，主要从事黄金选冶及矿产资源综合利用研究，E-mail：yangweixauat@126.com

中图分类号: TD953⁺.1;TD925⁺.5

收稿日期: 2021-09-22

刊出日期: 2021-12-25

Research Progress on the Methods Enhancing Biooxidation Pretreatment for Arsenic-Bearing Gold Ores

1.
School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

2.
Key Laboratory of Gold and Resources in Shaanxi Province, Xi'an 710055, China

More Information

Corresponding author: YANG Wei, yangweixauat@126.com

Received Date: 22 September 2021

Publish Date: 25 December 2021

摘要

摘要:
微生物预氧化技术具有成本低、设备简单、环境友好等优点，在难处理金矿资源的开发利用中得到了巨大发展和广泛认可。然而，由于原料来源复杂、浸矿菌种耐砷性差、浸矿过程容易生成钝化产物等问题，微生物预氧化在实际生产中依然受到一定程度的制约。目前如何强化含砷金矿微生物浸出已成为该领域的研究热点和难点。综述了目前国内外含砷金矿微生物预氧化强化方法的研究现状，其中详细阐述了应用氧化剂、金属离子、原电池效应、表面活性剂、腐殖酸和磁化水等强化方法的研究进展及作用机理。在此基础上，展望了该领域未来研究的主要发展方向，为含砷金矿微生物预氧化工艺的进一步开发及应用提供参考。
- 含砷金矿 /
- 微生物预氧化 /
- 强化方法
Abstract:
Due to the advantages of low cost, simple equipment, and eco-friendliness, biooxidation pretreatment technology has gained great development and wide recognition in the exploitation and utilization of refractory gold ore in recent years. However, some problems involving the complicated properties of crude ores, the low arsenic resistance of microorganisms, and the surface passivation phenomenon restrict the application of biooxidation pretreatment to some degree, so how to accelerate the bioleaching of arsenic-bearing gold ores remains a hot and difficult issue in the field of biohydrometallurgy. This paper summarized the research status of strengthening methods for the biooxidation pretreatment of arsenic bearing gold ores, and elaborated the progress and mechanisms of using oxidants, metal ions, galvanic interaction, surfactants, humid acid and magnetized water. On the basis, the major development directions in the future were prospected, which would provide referential guidance for the further application of biooxidation pretreatment of arsenic-containing gold ores.
- arsenic-bearing gold ore /
- biooxidation /
- enhancing methods

HTML全文

图 1 Fe(Ⅲ)存在条件下S. thermosulfidooxidans菌浸出砷黄铁矿的机理^[17](当加入Fe(Ⅲ)时，M为NH₄⁺，而不加入Fe(Ⅲ)时，M为K⁺)

Figure 1.

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图 2 砷黄铁矿细菌浸出机理示意图^[30] (a)不含Cu²⁺；(b)含Cu²⁺

Figure 2.

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图 3 Ag⁺对砷黄铁矿电化学氧化溶解的催化机理^[33]

Figure 3.

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图 4 黄铁矿对砷黄铁矿生物氧化的强化作用机制^[49]

Figure 4.

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图 5 腐殖酸强化砷黄铁矿微生物浸出机理^[60]

Figure 5.

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