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中南大学学报(自然科学版)

Journal of Central South University

第45卷    第12期    总第244期    2014年12月

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文章编号:1672-7207(2014)12-4105-06
捕收剂CSU-M对镍钼矿中氧化钼的浮选工艺及吸附机理
刘建东,孙伟

(中南大学 资源加工与生物工程学院,湖南 长沙,410083)

摘 要: 针对镍钼矿中氧化钼浮选回收率低,丢弃造成资源浪费和环境污染等问题,在工艺矿物学研究基础上,对镍钼矿中硫化矿物浮选尾矿进行开路实验和闭路实验,设计出氧化钼浮选流程,并利用分子动力学模拟研究捕收剂分子在矿物解离面的吸附过程。研究结果表明:镍钼矿中硫化矿物浮选尾矿主要含钼矿物为氧化钼,脉石矿物主要为磷灰石和黄铁矿;通过闭路浮选试验得到Mo品位为3.37%,Ni品位为3.75%,Mo回收率为71.22%,Ni回收率达67.81%的精矿;捕收剂CSU-M分子在氧化钼(100)面吸附比磷灰石(010)面和黄铁矿(110)面吸附强,从而实现浮选过程中氧化钼与磷灰石和黄铁矿的分离。

 

关键词: 捕收剂;镍钼矿;氧化钼;分子动力学模拟

Flotation technology and adsorption mechanism of collector CSU-M to molybdenum oxide in Ni-Mo ore
LIU Jiandong, SUN Wei

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

Abstract:In order to avoid the problems of low recovery in the flotation, the waste of resources and environmental pollution caused by discard, the flotation was adopted in the treatment of tailing after flotation sulphide mineral from Ni-Mo ore on the basis of mineralogical analysis. The proper flotation route was proposed based on open experiments on closed-circuit test. The method of molecular dynamics simulation was used to study the adsorption process of the collector on molybdenum oxide and apatite, providing a fundamental understanding of the flotation mechanism. The results show that the primary molybdenum mineral is molybdenum oxide in tailing after flotation sulphide mineral from Ni-Mo ore, while the main gangue is apatite. Content is obtained with Mo, Ni grades of 3.37% and 3.75%, respectively, and the respective recoveries of 71.22% and 67.81% by a flotation closed-circuit process. The collector is easier to be adsorbed on the surface of molybdenum oxide (100) than on that of apatite(010) and pyrite(110), which leads to the flotation separation of molybdenum oxide and the gangue minerals in tailing after flotation sulphide mineral from Ni-Mo ore.

 

Key words: collector; Ni-Mo ore; molybdenum oxide; molecular dynamics simulation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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