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J4 ›› 2009, Vol. 17 ›› Issue (4): 39-46.

• 技术前沿 • 上一篇    下一篇

煤金团聚法回收金机理初探

宋桂雪,冯明昭,王菊芳   

  1. 中国科学院新疆理化技术研究所,新疆  乌鲁木齐   830011
  • 收稿日期:2008-11-05 修回日期:2009-01-22 出版日期:2009-08-30 发布日期:2009-09-29
  • 作者简介:宋桂雪(1971-),男,山东泰安人,博士,主要从事无污染提金工艺的应用研究工作. E-mail:gxsong@gmail.com.

Preliminary Study on theMechanism of Gold Recovery Using the Coal Gold Agglomeration Process

SONG Guixue, FENGMingzhao, WANG Jufang   

  1. Xinjiang Technical Institute of Physics and Chem istry, Chinese Academy of Sciences, Urumqi　830011, Xinjiang, China
  • Received:2008-11-05 Revised:2009-01-22 Online:2009-08-30 Published:2009-09-29

PDF (PC)

989

摘要：

介绍了煤金团聚法(Coal Gold Agglomeration, CGA)的研究现状,讨论了影响煤金油团聚的几个主要因素,如煤化学、中性油的特性、疏水颗粒间的相互作用等。在此基础上,研究搅拌强度和接触时间对CGA金回收动力学的影响,发现在其他条件不变的情况下,同一矿种在不同的搅拌速度下,金回收动力学速率常数是一定的。筛选出的煤、油混合的聚团很好的无捕收剂捕金能力,金回收率可达77%～86%。进一步实验研究发现添加适量的硫化钠调整剂对含硫化物原生金矿中金有较好的活化作用,金回收率有显著提高,而硫化物的上浮却有所降低。

关键词: 煤金团聚法, 团聚机理, 无捕收剂浮选, 金回收动力学

Abstract:

In this article, the research status of the coal gold agglomeration (CGA) were introduced and a few major factors affecting coal-gold-oil agglomeration were discussed, such as coal chemistry, oil characteristics, and interaction among hydrophobic particles. Moreover, agitation intensity and contact time were also studied for gold recovery kinetics in CGA process. In the case of the same gold ore and other same conditions, the gold recovery kinetics rate coefficient is constant under the different agitation speed. The coal-oil agglomerateswere found having abilities of gold recovery with collector-free, the gold recoverywas up to 77%～86%. The addition of sodium sulfide (160～260 g/t) can activate the surface of gold particles, increase the gold recovery while the floatability of sulfides in gold pulp slightly decreased.

Key words: Coal-gold agglomeration process, Agglomeration mechanism, Collector-free flotation, Gold recovery kinetics

中图分类号: 

  • P618.01


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