风化壳淋积型稀土矿浸出液沉淀浮选溶液化学分析  

Soluton Chemistry on Precipitate-flotation of Rare Earth from Leach Liquor of the Weatherd Crust Elution-deposited Rare Earth Ore

作　　者：田君[1,2] 尹敬群[1] 谌开红[1] 饶国华[1] 江民涛[1] 

机构地区：[1]江西省科学院应用化学研究所,江西南昌330029 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《稀土》2011年第4期1-7,共7页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(50664004)

摘　　要：通过对风化壳淋积型稀土矿浸出液沉淀浮选进行溶液化学研究,探讨了体系pH、沉淀剂及浮选剂对沉淀浮选的影响。结果表明,风化壳淋积型稀土矿浸出液杂质可通过优先沉淀浮选以氢氧化物或焦磷酸盐或聚磷酸沉淀形式全部有效除去,最后将优先沉淀浮选除杂后浸出液中和提高pH值,再用沉淀浮选方法有效提取稀土。In this paper, soluton chemistry theoretical analysis on precipitate-flotation of rare earth from leach liquor of the weatherd crust elution-deposited rare earth ore was developed. The effects of system pH, precipitate reagent and flotation reagent on separation and extraction of rare earth ion from leach liquor of the weathered crust elution-deposited rare earth ore were investigated respectively. The results show that the impurity ions such as A13 ＊, Fe3 ~ , Ca2 ~, Mg2 ~ , Fe2 ~ can be removed respectively by precipitate-flotation beforehand selectivity in the forms of hydrate,pyrophosphate and polyphosphate, then rare earths were extracted efficiently from the flotation solution with higher pH value.

关 键 词：风化壳淋积型稀土矿 浸出液 沉淀浮选 溶液化学 

分 类 号：TD923.4[矿业工程—选矿] TD925.6