摘要
以水杨羟肟酸为捕收剂,通过浮选试验、溶液化学计算、动电位和红外光谱检测分析研究了氟碳铈矿的可浮性及药剂与矿物的作用机制。当水杨羟肟酸浓度为5×10-4mol·L-1时,氟碳铈矿在pH=7-10较宽的范围内有较好的可浮性,与矿物表面的稀土阳离子的水解产物种类及其浓度有关。pH=8-9范围内,稀土阳离子水解优势组分RE（OH）2＋和RE（OH）＋2吸附在氟碳铈矿表面是主要的正活性质点,有利于药剂的化学吸附。在pH=8.3时,水杨羟肟酸对氟碳铈矿捕收是化学吸附作用生成五元环螯合物的结果。
The flotation of bastnaesite using salicylhydroxamic acid as collector and the collection mechanism were studied through flotation tests, solution chemistry calculation, zeta potential measurements and infrared spectroscop-ic analysis. The results demonstrated that bastnaesite 10-4 mol.L-1 concentration of salicylhydroxamic acid, shows good floatability in the pH range of 7 - 10 as the 5× the surface of bastnaesite and its concentration. In the which is due to the hydroxylated species of rare earth ions on pH range of 8-9, RE（OH）2＋ and RE（OH）2＋ are the dominant components as the active points that is benefit to adsorb ionic and molecular association on the surface of bastnaesite. The collection results of salicylhydroxamic acid to bastnaesite at pH 8.3 are attributed to chemical ad- sorption and the pentatonic chelate loop is generated.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2014年第6期727-735,共9页
Journal of the Chinese Society of Rare Earths
基金
国家高技术研究发展计划(863计划)课题(2012AA061903)资助
关键词
氟碳铈矿
水杨羟肟酸
溶液化学
红外光谱
动电位
稀土
bastnaesite
salicylhydroxamic acid
solution chemistry
infrared spectroscopic
zeta potential
rare earths
