硅藻土、钠长石及石英的可浮性研究  

Floatability Study of Diatomite,Albite and Quartz

作　　者：高莹[1] 韩跃新[1] 陈晓龙[1] 朱一民[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2014年第2期286-289,共4页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2012AA030314);辽宁省高等学校创新团队项目(LT2012007)

摘　　要：实验考察了十二胺对硅藻土、钠长石、石英的捕收能力．通过ζ-电位、红外光谱检测对十二胺与硅藻土、钠长石、石英的作用机理进行了分析．浮选实验结果表明，pH为5．5～10．5，十二胺浓度为2．38×10^-4moVL时，钠长石和石英单矿物浮选回收率分别在92％和97％以上，而硅藻土的同收率存5％以下．ζ-电位分析结果表明，pH为5．5～10．5时，十二胺在钠长石和石英表面的吸附明显强于住硅藻土表向的吸附，这与浮选结果一致．红外光谱分析结果表明，pH为5．5时，十二胺在硅藻土、钠长石、石英表面均仔在物理吸附、氢键作用，且在硅藻土表面的吸附强度相对弱，导致其叮浮性差．The flotation behavior of diatomite, albite and quartz was studied using laurylamine as the collector, and the acting mechanism of the collector with the minerals was analyzed by Zeta potential measuring and FT-IR spectrum analyzing methods. The mineral flotation test results indicate that the recoveries of the albite and quartz were above 92 wt. % and 97 wt. % , and the recovery of diatomite was below 5 wt. % , in a slurry of pH ranging from 5.5 to 10.5 at a laurylamine concentration of 2.38 × 10 -4 mol/L. Zeta potential analysis indicates that the action between the laurylamine and the diatomite surfaces in a slurry of pH ranging from 5.5 to 10.5 is weaker than that between the laurylamine and albite/quartz sufaces, which confirms the flotation results of the minerals. The IR spectrum analysis shows that hydrogen bond and electrostatic adsorptions occur between the laurylamine and the diatomite, albite and quartz surfaces in a slurry of pH 5.5. However, these actions between the laurylamine and the diatomite surfaces are weaker than those between the laurylamine and albite/quartz sufaces, resulting in its bad floatability.

关 键 词：硅藻土提纯 十二胺 浮选 吸附机理 回收率 

分 类 号：TD97[矿业工程—选矿]