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黄金科学技术 ›› 2018, Vol. 26 ›› Issue (2): 254-260.doi: 10.11872/j.issn.1005-2518.2018.02.254

• 冶炼技术与装备研发 • 上一篇    

含砷金精矿砷富集试验研究

刘子龙1,2,杨洪英1,张金刚2,宋言1   

  1. 1.东北大学冶金学院,辽宁 沈阳 110819;
    2.西藏华泰龙矿业开发有限公司,西藏 拉萨 850200
  • 收稿日期:2017-07-11 修回日期:2018-01-02 出版日期:2018-04-30 发布日期:2018-05-19
  • 作者简介:刘子龙(1972-),男,辽宁凤城人,博士研究生,教授级高工,从事黄金及有色金属选矿研究工作。longzi_2009@163.com
  • 基金资助:

    :国家自然科学基金项目“含砷复杂金矿细菌氧化矿物界面能及其作用机制的基础研究”(编号:U1608254)、“难浸含砷金矿细菌氧化过程中[AsS]2-→As(III)→As(V)转化机理研究”(编号:51374066)和辽宁省自然科学基金项目“利用ASH-07浸矿菌从含铜浮选尾矿中高效绿色回收铜的新技术研究”(编号:2014020037)资助 

Experimental Study on Arsenic Enrichment of Gold Concentrate Containing Arsenic

LIU Zilong 1,2,YANG Hongying 1,ZHANG Jingang 2,SONG Yan 1   

  1. 1.School of Metallurgy,Northeastern University,Shenyang 110819 ,Liaoning,China;2.Tibet Huatailong Mining Development Co.,Ltd., Lhasa 850200,Tibet,China
  • Received:2017-07-11 Revised:2018-01-02 Online:2018-04-30 Published:2018-05-19

摘要:

某黄金冶炼厂收购的含砷金精矿中金品位低于30 g/t,若直接进入冶金流程,既影响流程平衡,又会增加生产成本。根据砷矿物浮游特性,在pH=3.5的条件下,对含砷金精矿进行再磨后砷富集预选,采用一次粗选两次精选一次扫选工艺,获得产率为51.11%的较高品位金精矿,其中含金48.10 g/t,含硫32.56%,含砷7.13%,砷回收率达到90.61%。利用该预处理工艺最终实现了含砷金精矿物料中砷、硫、金的分选富集,降低了后续冶金作业处理量,有利于提高冶金指标和企业综合效益,从而实现清洁生产、节能减排的目标。

关键词: 含砷金精矿, 酸性, 浮选试验, 预处理, 分选, 富集, 节能减排

Abstract:

The gold grade of arsenic bearing gold concentrate purchased by a gold smeltor is less than 30 g/t,if entering into the metallurgical process directly,it will not only affect the balance of process,but also increase production cost.According to the planktonic characteristics of arsenic minerals,the arsenic concentration was pre-selected after regrinding arsenic bearing gold concentrate under the condition of pH=3.5.The high grade gold concentrate with 51.11% yield was obtained by one roughing and twice selection,of which gold content is 48.10 g/t,sulfur content is 32.56%,arsenic content is 7.13%,arsenic recovery rate of 90.61%.Finally,the separation and enrichment of arsenic,sulfur and gold in arsenic bearing gold concentrate were achievedby the pretreatment process.It reduces volume of subsequent metallurgical operations,helps to improve metallurgical indicators and comprechensive benefits of enterprises,so as to achieve clean production,energy saving and emission reduction goals.

Key words: arsenic gold concentrate, acid, flotation tests, pretreatment, separation, enrichment, energy conser-vation and emissions reduction

中图分类号: 

  • F416.32

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