弱酸条件下含铷云母浮选研究  

Flotation of Mica-Containing Rubidium under Weak Acidity Medium

作　　者：杨刚 车小奎 郑其 王雷 罗毅 Yang Gang;Che Xiaokui;Zhen Qi;Wang Lei;Luo Yi(National Engineering Laboratory of Biohydrometallurgy,China GRINM Group Co.,Ltd.,Beijing 100088,China;GRINM Research and Enviorment Tech Co.,Ltd.,Beijing 101400,China;General Research Institute for Nonferrous Metals,Beijing 100088,China)

机构地区：[1]中国有研科技集团有限公司生物冶金国家工程实验室,北京100088 [2]有研资源环境技术研究院(北京)有限公司,北京101400 [3]北京有色金属研究总院,北京100088

出　　处：《稀有金属》2024年第2期296-304,共9页Chinese Journal of Rare Metals

基　　金：国家高技术研究发展计划(863)项目(2013AA065703)资助。

摘　　要：铷是一种典型的稀散金属、重要的战略资源,铷的选矿技术最近几年也得到了不断的发展。考察了长石和含铷锂云母两种纯矿物在不同捕收剂、pH、调整剂条件下的可浮性差异,并通过红外光谱测试、zeta电位测试、X射线光电子能谱(XPS)测试等方法研究药剂与云母、长石的作用机制。结果表明:在pH为6,草酸用量为300 g·t^(-1),捕收剂总量为5×10^(-4) mol·L^(-1),十二胺与十二烷基磺酸钠的比例为1∶1时,含铷锂云母回收率达到83%,长石回收率为9%,长石和含铷锂云母得到了很好的分离。红外光谱发现,组合捕收剂在锂云母与长石的吸附是物理吸附且锂云母表面还能形成氢键;XPS研究发现,组合药剂会与锂云母的铝形成化学吸附;电位测试发现,单一捕收剂作用时,锂云母与长石的电位有正向或者负向的移动,组合捕收剂相对于十二胺单独作用时,有负向的移动,十二胺的吸附减少。Nowadays with the continuous development of science and technology,rubidium has been widely used in photoelectric,aviation,medical and other fields due to its unique physical and chemical properties,becoming one of the important elements in the application of high technology.There was no independent mineral for rubidium and it usually exists in mica in the way of isomorphism,or in salt lake and brine,so,the beneficiation for rubidium-containing mica was one of the main methods to recover rubidium.In this paper,an Australian rubidium-containing lepidolite ore was taken as the research object,the pure ore flotation behavior of rubidiumcontaining lepidolite and feldspar was mainly studied,and the floatability difference of two kinds of pure minerals under different col-lecting agents,pH value and regulator was investigated and verified by artificial mixed ore.The adsorption mechanism of the collecting agents with rubidium-containing lepidolite and feldspar was studied by means of infrared spectrum(FTIR),zeta potential and X-ray photoelectron spectroscopy(XPS),etc.The results of the pure minerals test indicated that:(1)Three cationic collectors(dodecylam-ine,dodecyltrimethylammonium chloride,trimethyltetradecylammonium chloride)had strong collecting ability for pure minerals of ru-bidium-containing lepidolite and feldspar.(2)The three anion collectors(sodium dodecyl sulfonate,sodium oleate and sodium dodec-yl sulfate)had weak collecting capacity for rubidium-containing lepidolite and feldspar,the flotation recoveries of the two pure miner-als were low,and the recovery changed little with pH value changed.It showed that the single anion collector had poor collecting per-formance for feldspar and rubidium-containing lepidolite,but had certain selectivity.(3)The combination of anion and cation was used as the collector to carry out the flotation test.The test results showed that dodecamine and sodium dodecyl sulfonate had better flo-tation ability when the combination collector was used for flotation.It was found that w

关 键 词：铷 锂云母 长石 浮选 

分 类 号：TD923[矿业工程—选矿]