摘要
氟碳铈矿与重晶石是轻稀土矿中密切共生的矿物,两者的分离优劣直接影响稀土精矿的品位。进行了3种捕收剂和6种调整剂体系中氟碳铈矿和重晶石的浮选行为差异试验、药剂作用前后Zeta电位变化检测。结果表明:油酸钠对两种矿物的捕收力均十分优良,但选择性差,水杨羟肟酸对氟碳铈矿具选择性,而十二烷基磺酸钠对重晶石具选择性;在油酸钠体系下,除CaCl2和Al2(SO4)3外,六偏磷酸钠、氟硅酸钠、硅酸钠、碳酸钠对氟碳铈矿均表现出强烈的抑制效果;在水杨羟肟酸体系下,对氟碳铈矿的抑制作用大小:六偏磷酸钠>氟硅酸钠>碳酸钠>氯化钙>硫酸铝>硅酸钠;在两种捕收剂体系下,对重晶石的抑制作用大小:六偏磷酸钠>硫酸铝>氟硅酸钠。在各种调整剂作用下,矿物表面电位发生了迁移,其规律与可浮性结果吻合。
Bastnaesite and barite are closely associated minerals in light rare earth ores,and their separation directly affects the grade of rare earth concentrate.The flotation behaviors of bastnaesite and barite in three collectors and six modifiers were tested,and changes of Zeta potential before and after reagents adsorption were detected.The results showed that sodium oleate has excellent ability to collect the bastnaesite and barite,but with poor selectivity.Salicylhydroxamic acid is selective for bastnaesite,however,SDS is selective for barite.In sodium oleate system,sodium hexametaphosphate,sodium hexafluorosilicate,sodium silicate and sodium carbonate are all showed strong inhibitory effect on bastnaesite except the calcium chloride and aluminum sulfate.In salicylhydroxamic acid system,the inhibition ability of depressor for bastnaesite are ranked as follows:SHMP>SSF>sodium carbonate>calcium chloride>aluminum sulphate>sodium silicate.However,in two collector systems,the inhibition ability of depressor for barite are ranked as follows:sodium hexametaphosphate>aluminum sulfate>sodium fluosilicate.Under the action of various regulators,the migration of mineral surface potential coincides with the results of floatability.
作者
王成行
时晗
邱显扬
胡真
Wang Chenghang;Shi Han;Qiu Xianyang;Hu Zhen(Institute of Resources Comprehensive Utilization,Guangdong Academy of Sciences,State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangdong Provincial Key Laboratory of Development&Comprehensive Utilization of Mineral Resources,Guangzhou 510650,China;School of Minerals Processing&Bioengineering,Central South University,Changsha 410012,China)
出处
《中国稀土学报》
CAS
CSCD
北大核心
2020年第6期816-822,共7页
Journal of the Chinese Society of Rare Earths
基金
广东省科学院实施创新驱动发展能力建设专项资金项目(2017GDASCX-0301,2019GDASYL-0302010)
四川省科技攻关计划项目(15ZC1801)资助。
关键词
油酸钠
水杨羟肟酸
氟碳铈矿
重晶石
ZETA电位
稀土
sodium oleate
salicylhydroxamic acid
bastnaesite
barite
Zeta potential
rare earths
