从尾矿中回收白钨矿的工艺试验研究  

Study on Technology Process of Recovering Scheelite from Tailings

作　　者：林颖[1] 叶志平[1] 吴静仪 

机构地区：[1]华南师范大学化学与环境学院,环境理论化学省部共建教育部重点实验室,广州510006

出　　处：《华南师范大学学报（自然科学版）》2014年第3期87-93,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省科技计划项目(2009A030902004)

摘　　要：研究采用再磨-浮选工艺对南方某老尾库尾矿(含WO30.19%)中的钨进行回收.以NaOH为调整剂、Na2SiO3为抑制剂、氧化石蜡皂733为捕收剂,当-0.074 mm占83.52%的磨矿细度下,钨粗选试验最佳条件为NaOH用量为2 000 g/t,Na2SiO3用量为2 000 g/t,捕收剂733用量为100 g/t.通过一次粗选、二次扫选和三次精选流程,获得钨粗精矿含WO33.26%,回收率为70.48%.红外光谱测定结果表明,捕收剂733对白钨矿的捕收作用以表面化学吸附和键合为主.The process of recovery of tungsten by regrinding-flotation from an old ore tailing contained 0. 19% WO3 in the south is investigated. The results show that satisfactory flotation indexes can be achieved by the process of one stage roughing,two-stage scavenging and three-stage cleaning,with sodium hydroxide as regulator,sodium silicate as the depressant and paraffin soap oxidated 733 as the collector. The experiment of tungsten roughing shows that the optimized dosage of NaOH is 2 000 g /t,dosage of sodium silicate is 2 000 g /t,dosage of collector 733 is 100 g /t when the optimum grinding fineness of- 0. 074 mm is 83. 52%. The tungsten concentrate grade and the recovery of WO3 reach 3. 26% and 70. 48%,respectively. Analysis of IR spectra testified that chemisorption and bonding were the main reaction mechanism of 733 on scheelite.

关 键 词：尾矿 回收 白钨矿 浮选 工艺 

分 类 号：TD868[矿业工程—金属矿开采]