摘要
广西某铅锌锑多金属硫化矿石等可浮混合铅锌精矿表面附着有大量的捕收剂,在后续铅锌分离时,锌矿物抑制难度较大,充分脱除吸附在锌矿物表面的捕收剂,可显著改善铅锌的分离效果。试验研究了硫化钠、活性炭和机械磨矿单独脱药和组合脱药对铅锌分离的影响。结果显示:硫化钠的单独脱药效果最好,活性炭的单独脱药效果最差;组合脱药时,硫化钠+活性炭的脱药效果更好,在硫化钠+活性炭用量为5 000+400 g/t时,可取得铅品位为25.47%、铅回收率为90.18%、含锌5.13%、锌回收率为9.61%的铅粗精矿,说明合适的组合方式可改善脱药效果,促进等可浮铅锌混合精矿的分离。
When iso-flotation process is adopted for the flotation of lead-zinc sulphide ore in Guangxi,large amount of collectors are adhered to the surface of lead-zinc bulk concentrate. Zinc ore are hard to be depressed when its surface adhered by collectors in the followed lead-zinc separation process. In order to improve the separation effect of lead and zinc,remove collectors adhered to the surface of zinc minerals was conducted. The lead-zinc separation effects by the separated reagent removal and combinative reagent removal of sodium sulfide,activated carbon and mechanical grinding was studied. The results show that the sodium sulfide is the best reagent while the activated carbon is the worst. In the combinative reagent removal,the combination of sodium sulfide and activated carbon is the best one. When the dosage of sodium sulfide and activated carbon is 5 000 g /t and 400 g / t respectively,the lead rough concentrate with the grade of lead is 25. 47% and the recovery rate of lead is 90.18%,the grade of zinc is 5. 13% and the recovery rate of zinc is 9. 61% was obtained. Therefore,a proper combination mode can improve the effect of reagent removal and promote the separation of iso-flotation lead and zinc bulk concentrate.
出处
《金属矿山》
CAS
北大核心
2016年第6期73-76,共4页
Metal Mine
基金
国家自然科学基金青年基金项目(编号:51304150)
西安建筑科技大学基础研究项目(编号:JC1508)
关键词
硫化铅锌矿
硫化钠
活性炭
机械磨矿
脱药
Lead-zinc sulfide ore
Sodium sulfide
Activated carbon
Mechanical grinding
Reagent removal