助磨剂在微细粒贫赤铁矿磨矿作业中的影响及其作用机理  

The Mechanism of Action and the Influences of Grinding Aid Agent During Micro Fine Particle of Lean Hematite Ore of Grinding Operation

作　　者：梁冰[1,2] 张锦瑞[1,2] 赵礼兵[1,2] 韩苗苗[1] 

机构地区：[1]河北联合大学矿业工程学院,河北唐山063009 [2]河北省矿业开发与安全技术实验室,河北唐山063009

出　　处：《有色矿冶》2015年第2期26-29,共4页Non-Ferrous Mining and Metallurgy

基　　金：国家科技部国际合作项目资助项目:微细粒贫赤铁矿高效回收关键技术的联合研发(项目编号:2012DFR70320);河北联合大学科学研究基金资助项目:微细粒贫赤铁矿助磨机理研究(项目编号:Z201301)

摘　　要：研究了柠檬酸对赤铁矿磨矿效率的影响,并分析了其作用机理。结果表明:在最优磨矿介质条件下,添加赤铁矿质量分数0.10%的柠檬酸与不添加相比,可使磨矿产品中-0.074mm的含量提高7.11%;柠檬酸在赤铁矿表面产生的物理吸附和化学吸附,具有降低磨矿矿浆的粘度、改变赤铁矿表面的电位、降低赤铁矿表面的硬度等作用,因而柠檬酸能提高赤铁矿的磨矿效率。In this paper, the effect of citric acid on the hematite was studied and the mechanism was ana- lyzed. The results indicated that under the condition of the optimal grinding medium, compared with the result without citric acid added, with citric acid added at the mass of 0.10% of the hematite, the content of --0. 074 mm of grinding production was increased by 7.110%; physical adsorption and chemical adsorption which were on the surface of hematite produced by citric acid can reduce viscosity of grinding pulp, change surface potential of the hematite, and reduce the hardness on the surface of the hematite. Therefore citric acid can improve the grinding efficiency of the hematite.

关 键 词：赤铁矿 助磨剂 磨矿效率 作用机理 

分 类 号：TD921[矿业工程—选矿]