摘要
随着社会的快速发展,钪资源已经成为重要的战略资源。目前,可供直接利用的资源殆尽,所以利用选矿富集的方法成为资源有效利用的关键。西昌三圆石材废料中Sc_(2)O_(3)品位为68 g/t,达不到生产要求,因此需要对矿石进行富集回收。工艺矿物学研究表明,辉石和角闪石中Sc_(2)O_(3)的含量相对较多,二者是选矿回收的主要载钪矿物。通过磨矿细度试验、pH值条件试验和捕收剂用量试验,确定采用"一粗一扫一精,精选尾矿再扫"的浮选流程,最终在磨矿细度为-0.074 mm含量占95%、粗选油酸钠用量250 g/t、氢氧化钠用量2200 g/t、扫选油酸钠用量100 g/t、氢氧化钠用量500 g/t的条件下,获得Sc_(2)O_(3)精矿品位为79.75 g/t,回收率为65.11%的较好指标,为钪的回收利用提供一定的借鉴意义。
With the rapid development of society,scandium resources have become important strategic resources.At present,the resources available for direct utilization are exhausted,so the method of beneficiation and enrichment has become the key to the effective utilization of resources.The grade of Sc_(2)O_(3) in Xichang Sanyuan stone waste is 68 g/t,which can not meet the production requirements,so the ore needs to be enriched and recovered.The study of process mineralogy showed that the content of Sc_(2)O_(3) in pyroxene and amphibole were relatively large,and they were the main scandium bearing minerals recovered by beneficiation.In this paper,through grinding fineness test,pH value test and reagent dosage test,the flotation process of"one roughing,one scavenging and one cleaning,cleaning tailings and then scavenging"was determined.The final grinding fineness is-0.074 mm,accounting for 95%.The dosage of crude sodium oleate was 250 g/t,and the dosage of sodium hydroxide was 2200 g/t.Under the conditions of 100 g/t sodium oleate and 500 g/t sodium hydroxide,a better index of Sc_(2)O_(3) concentrate grade of 79.75 g/t and recovery of 65.11%was obtained,which aimed to provide a certain reference for the recovery and utilization of scandium.
作者
冯艳虎
庄故章
周平
李子豪
晋艳玲
张培
FENG Yan-hu;ZHUANG Gu-zhang;ZHOU Ping;LI Zi-hao;JIN Yan-ling;ZHANG Pei(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China)
出处
《矿冶》
CAS
2021年第6期20-28,共9页
Mining And Metallurgy
基金
昆明理工大学分析测试基金(2018M20172201113)。
关键词
钪回收
油酸钠
浮选
scandium recovery
sodium oleate
flotation
