江西某白钨矿选矿工艺研究.docxVIP

江西某白钨矿选矿工艺研究郭玉武魏党生叶从新韦华祖( 湖南有色金属研究院，湖南 长沙 410100)摘 要 江西某白钨矿矿石中主要有价元素为钨，钨主要以白钨矿形式存在。现场原采用重选工艺回收，生产指标不理想。为提高白钨矿分选指标，进行了系统的选矿试验 研 究。结 果 表 明，原矿在磨矿细度为 － 0. 074 mm 占65% 条件下浮选脱硫后，以 NaOH + Na2 CO3 为调整剂、Na2 SiO3 + GS 为抑制剂、731 氧化石蜡皂 + YK 为捕收剂，采用 1 粗 2 精 2 扫预精选—预精选精矿浓缩后经 1 粗 4 精 2 扫—1 次 2 次精选尾矿合并精扫选—精矿返回 2 次精精选、尾矿 返回 1 次精扫选的工艺流程，获得了 WO3 品位 66. 71% 、回收率 72. 91% 的钨精矿。根据试验结果对现场工艺进行改 造优化后，现场生产获得了 WO3 品位 62. 29% 、回收率 74. 21% 的钨精矿，较原工艺流程 WO3 品位和回收率分别提高 了 10. 10 和 18. 86 个百分点，钨精矿中硫含量从 1. 53% 降至 0. 21% ，优越性明显。关键词 白钨矿 浮选 新药剂TD923 + ． 71001-1250( 2014) -10-069-07A中图分类号文献标志码文章编号Ｒesearch on Mineral Processing Technology of a Scheelite Ore from JiangxiGuo YuwuWei Dangsheng Ye CongxinWei Huazu( Hunan Ｒesearch Institute of Nonferrous Metals，Changsha 410100，China)AbstractMain valuable minerals of a scheelite ore in Jiangxi is tungsten，which mainly exists in form of scheel- ite. Original on-site process is gravity，and the production index is not ideal. Systematic ore dressing research is carried out in order to improve the separation efficiency. The results indicated that，desulfuration by flotation at the grinding fineness of 65% passing 0. 074 mm，using NaOH + Na2 CO3 as modifier，Na2 SiO3 + GS as depressor，731 oxyparaffin soap + YK as collector， through flotation process of preconcentration of one roughing，one cleaning，two scavenging-thicken for tailings of preconcentra- tion and then through one roughing，four cleaning，two scavenging-combination of tailings of first and second cleaning through clean-scavenging operation-concentrate returning to second clean-cleaning，tailing returning to first clean-scavenging，scheelite concentrate assay 66. 71% WO3 and recovery of 72. 91% was obtained. The on-site process is transformed according to the flo- tation results，and scheelite concentrate assay 62. 29% WO3 and recovery of 74. 21% was obtained. WO3 grade and recovery of the concentrate increased by 10. 10 and 18. 86 percentage points respectively compared with the previous，content of sulfur