从多金属矿中综合回收钨锡选矿新工艺研究

The research of mineral processing technology for comprehensive recovering of fine associated tin from tungsten polymetallic ore

某钨多金属矿中伴生的锡矿物品位低于0.15%难以有效回收,经磁浮选别后,硫化矿的浮选尾矿中WO3品位为0.45%和Sn品位为0.11%.对硫化矿浮选尾矿进行钨锡混合浮选,钨锡混合浮选精矿经重选富集,在Na2CO3为调整剂、YD为抑制剂、Pb(NO3)为活化剂、WB与WP为组合捕收剂的条件下,小型试验最终得到:品位62.24%的WO3和品位5.38%的Sn,钨回收率62.20%、锡回收率24.03%的钨锡混合精矿;WO3品位为35.11%、钨回收率为10.92%的钨精矿,总钨回收率为73.12%,达到了回收钨矿物的同时综合回收锡矿物的目的.

Tin minerals which associated with tungsten polymetallic ores are difficult to recover ,because of its grade 〈0.15%. After magnetic-flotation separation, sulphide flotation tailings with grade of 0.45 % WO 3 and 0.11%Sn was obtained.Firsdy the tungsten-tin bulk flotation was performed on a sulfide-flotation tailings , under the conditions of Na 2 CO 3 as modifier,YD as depressor, Pb（NO 3 ） as activator, WB and WP as combination collector, then the tungsten-tin rough concentrate was treated by gravity.In the bench test ,the following indexes were obtained：the tungsten-tin bulk concentrate with grade of 62.24%WO 3 and 5.38%Sn, the tungsten recovery was 62.20%,the tin recovery was 24.03%;the tungsten concentrate with grade of 35.11%WO 3 ,the tuntsten recovery was 10.92%;the total tungsten recovery was 73.12%.Finally, the purpose of comprehensively recovering tin resources while recovering tungsten minerals was achieved.