某稀土矿尾矿综合回收萤石和重晶石试验研究  

Experimental Research on the Recycle of Fluorite and Barite from Rare Earth Ore Tailings in Southwest

作　　者：付翔[1] 徐叶果 Fu Xiang;Xu Yeguo(School of City Construction,Jiangxi University of Technology,Nanchang,Jiangxi 330098)

机构地区：[1]江西科技学院城市建设学院,江西南昌330098

出　　处：《非金属矿》2020年第3期72-76,共5页Non-Metallic Mines

基　　金：江西省教育厅科学技术研究项目;江西省自然科学基金(20172BAB206041);江西卫生健康委员会科技计划项目(20202019)。

摘　　要：西南某稀土尾矿中含CaF215.33%,含BaSO413.27%,属于伴生低品位萤石-重晶石矿产资源,具有一定的回收价值。针对试样组成性质,在磨矿细度-0.074 mm为72.61%,采用碳酸钠为pH调整剂、水玻璃为抑制剂、油酸钠为捕收剂,进行“1次粗选、2次精选、2次扫选”的萤石-重晶石混合浮选流程,得到萤石与重晶石混合精矿,混合精选采用水玻璃为分散剂,苛性淀粉为重晶石抑制剂,油酸钠为捕收剂浮选萤石,经“1次粗选、2次扫选、6次精选”的浮选闭路试验流程,最终得到了CaF2品位96.83%、回收率89.36%的萤石精矿,获得BaSO4品位91.22%,回收率70.31%的重晶石精矿,较好地实现了该尾矿中萤石与重晶石的综合回收。The CaF2 and BaSO4 grade is 15.33%and 13.27%in a rare earth ore tailings of Southwest area which was attributed to low-grade fluorite-barite mineral resources,and it has a certain value of recycling.Based on the composition properties of the sample,the grinding fineness of-0.074 mm was at 72.61%,using sodium carbonate as pH adjustor,water glass as depressant and sodium oleate as collector for fluorite and barite mixture flotation by"one roughing,two cleanings and two scavengings",and the mixed fluorite-barite concentrate was obtained.Then water glass was used as dispersant,caustic starch was used as depressant for barite,sodium oleate as collector to separate the mixed concentrate for fluorite recovery.By the closed-circuit flotation test of"one roughing,two scavengings and six cleanings".The fluorite with the CaF2 grade and recovery of 96.83%and 89.36%,and barite concentrate with the BaSO4 grade and recovery of 91.22%and 70.31%were obtained.The comprehensive recovery of fluorite and barite from the tailings has been achieved.

关 键 词：稀土矿尾矿 萤石 重晶石 抑制剂 捕收剂 浮选分离 

分 类 号：TD926.4+2[矿业工程—选矿]