硫化矿尾矿中氧化锌浮选的主要影响因素分析
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摘要
某铅锌矿选矿厂尾矿主要为氧化锌矿,工业调试阶段该氧化锌矿中Zn品位为1.96%,矿石的含泥量较大,属难选氧化锌矿石;该氧化锌矿主要的可利用矿物为异极矿和菱锌矿,脉石矿物主要为碳酸盐。为此,对回收该尾矿中的氧化锌进行了研究。使用长沙矿山研究院自主研发的CA-1药剂作为氧化锌捕收剂进行选矿试验。试验结果表明:在最佳选矿条件下,采用一粗一扫两精闭路浮选流程,得到的锌精矿锌品位为29.12%、回收率为74.73%,实现了对该铅锌矿选矿厂尾矿中极低品位氧化锌矿的有效回收。
The tailings of a beneficiation plant in a lead-zinc mine mainly contain zinc oxide ore,and the Zn grade in the zinc oxide ore was 1.96%at the industrial commissioning stage.The mud content in the zinc ore was relatively high,and it was a difficult-to-treat zinc oxide ore.The main minerals available for use of the zinc oxide ore included hemimorphite and smithsonite,and the gangue minerals were mainly carbonates.Therefore,the recovery of zinc oxide from this lead-zinc tailings was studied.The CA-1,a zinc oxide collector independently developed by Changsha Institute of Mining Research,was used to carry out the mineral processing experiment.The study results showed that,by using closed circuit flotation flowsheets of one roughing stage,one scavenging stage and two cleaning stages,the zinc grade in the obtained zinc concentrate was 29.12%and the recovery rate was 74.73% under the best mineral processing conditions.The study realized effective recovery of very low-grade zinc oxide ore from the tailings of the lead-zinc ore concentrator.
The tailings of a beneficiation plant in a lead-zinc mine mainly contain zinc oxide ore,and the Zn grade in the zinc oxide ore was 1.96%at the industrial commissioning stage.The mud content in the zinc ore was relatively high,and it was a difficult-to-treat zinc oxide ore.The main minerals available for use of the zinc oxide ore included hemimorphite and smithsonite,and the gangue minerals were mainly carbonates.Therefore,the recovery of zinc oxide from this lead-zinc tailings was studied.The CA-1,a zinc oxide collector independently developed by Changsha Institute of Mining Research,was used to carry out the mineral processing experiment.The study results showed that,by using closed circuit flotation flowsheets of one roughing stage,one scavenging stage and two cleaning stages,the zinc grade in the obtained zinc concentrate was 29.12%and the recovery rate was 74.73% under the best mineral processing conditions.The study realized effective recovery of very low-grade zinc oxide ore from the tailings of the lead-zinc ore concentrator.
引文
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[2]靳晨曦,马子龙,曹亦俊,等.极低品位泥质难选氧化锌矿浮选试验研究[J].矿产综合利用,2017(1):70-75.
[3]罗仙平,罗礼英,杨备,等.四川某难选低品位氧化锌矿选矿工艺试验研究[J].矿冶工程,2012,32(6):40-43.
[4]董宗良,刘勇,冯程,等.CA-1在低品位难选氧化锌矿浮选中的应用[J].矿业研究与开发,2018,38(2):64-69.
[5]冉金城,刘全军,张治国,等.腾冲高泥氧化锌矿选矿实验研究[J].过程工程学报,2015,15(4):559-566.
[6]卢建安.高泥高铁氧化锌矿浮选理论与工艺研究[D].长沙:中南大学,2014.
[7]邓荣东.氧化锌矿矿浆中离子存在行为及吸附机理研究[D].昆明:昆明理工大学,2015.
[8]朱从杰.矿泥对氧化锌矿物浮选行为的影响[J].矿产综合利用,2005(1):7-11.
[9]周建琼.四川会理铅锌矿高碱度含泥尾矿氧化锌浮选生产实践[J].大众科技,2016,18(3):20-21.
[10]孙政元,马卫红,廖璐,等.氧化锌矿硫化-胺法浮选机理[J].矿业工程,2012,10(6):28-29.