弱酸性体系下PA捕收剂浮选分离稀土-萤石的研究  

Study on Flotation Separation of Rare Earth and Fluorite with PA Collector in Weak Acid System

作　　者：常胜 张金山 柳召刚 冀默 CHANG Sheng;ZHANG Jin-shan;LIU Zhao-gang;JI Mo(College of Mining and Coal,Inner Mongolia University of Science&Technology,Baotou 014010,China;Key Laboratory of Green Extraction&Eficient Utilization of Light Rare-Earth Resources Ministry of Education,Baotou 014010,China;Inner Mongolia Key Laboratory of Rare Earth Hydrometallurgy and Light Rare-Earth Application,Baotou O14010,China;Beiben Trucks Group Co.,Ltd.,Baotou014030,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,内蒙古包头014010 [2]轻稀土资源绿色提取与高效利用教育部重点实验室,内蒙古包头014010 [3]内蒙古自治区稀土湿法冶金与轻稀土重点实验室,内蒙古包头014010 [4]北奔重型汽车集团有限公司,内蒙古包头014030

出　　处：《稀土》2024年第4期151-158,共8页Chinese Rare Earths

基　　金：国家自然科学基金(51564042,51634005);内蒙古自然科学基金(2014ZD04,2016ZD05)。

摘　　要：邻苯二甲酸(PA)在弱酸性体系下可以实现稀土-萤石的高效分离,在硫酸用量1.8 kg/t、抑制剂水玻璃用量2.1 kg/t、捕收剂邻苯二甲酸(PA)用量2.4 kg/t的药剂制度下经一粗-三精-两扫-中矿逐级返回的闭路试验,获得CaF_(2)品位95.23%、回收率84.19%的萤石精矿。合理的捕收剂和矿浆酸碱度是实现萤石、稀土连续浮选的关健,可以提高白云鄂博矿资源的利用率。Phthalic acid(PA)can separate rare earth from fluorite efficiently in weak acid system.Under the condition of sulfuric acid dosage of 1.8 kg/t,inhibitor sodium silicate dosage of 2.1 kg/t and phthalic acid dosage of 2.4 kg/t,fluorite concentrate with CaF_(2)grade of 95.23%and its recovery rate of 84.19%were obtained by closed-circuit test in a way of“one roughing-three refining-two scavenging middling”.Reasonable collector and pulp pH are the key to realize continuous flotation of fluorite and rare earth,which can improve the utilization rate of Baiyun Obo ore resources.

关 键 词：萤石粗精矿 PA捕收剂 稀土 浮选 综合回收 

分 类 号：TD955[矿业工程—选矿]