某菱铁矿磁化焙烧矿干湿联合磁选试验研究
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摘要
针对某缺水地区的磁化焙烧菱铁矿开展了一段干选与两段湿选联合工艺和两段干选与两段湿选联合工艺研究。结果表明:一段干选尾矿抛除率达到11.53%,精矿铁品位达到55.74%;两段干选总抛尾率达到17.92%,精矿的铁品位达到58.67%;一段干选与两段湿选联合工艺最终的铁精矿品位可达63%以上;两段干选与两段湿选联合工艺最终的铁精矿品位可达65.10%;硫、磷主要富集于尾矿中,在精矿中的含量达到铁精矿质量标准中的Ⅰ级品标准。
A combined process of one-stage dry separation and two-stage wet separation and another combined process of twostage dry separation and two-stage wet separation for magnetic roasting siderite ore in a water-deficient area were studied.The results were obtained as follows.Firstly,for one-stage dry separation,the tailings removal rate was 11.53%and the iron grade of concentrate was 55.74%.Secondly,for two-stage dry separation,the total tailings removal rate was 17.92%,and the iron grade of concentrate was 58.67%.Thirdly,the final iron grade of concentrate of one-stage dry separation combined with twostage wet separation could reach more than 63%.Fourthly,the final iron grade of two-stage dry separation combined with twostage wet separation could reach 65.10%.Finally,sulfur and phosphorus were mainly concentrated in tailings,and the content of sulphur and phosphorus in concentrate met the first grade of the quality standard of iron concentrate.
A combined process of one-stage dry separation and two-stage wet separation and another combined process of twostage dry separation and two-stage wet separation for magnetic roasting siderite ore in a water-deficient area were studied.The results were obtained as follows.Firstly,for one-stage dry separation,the tailings removal rate was 11.53%and the iron grade of concentrate was 55.74%.Secondly,for two-stage dry separation,the total tailings removal rate was 17.92%,and the iron grade of concentrate was 58.67%.Thirdly,the final iron grade of concentrate of one-stage dry separation combined with twostage wet separation could reach more than 63%.Fourthly,the final iron grade of two-stage dry separation combined with twostage wet separation could reach 65.10%.Finally,sulfur and phosphorus were mainly concentrated in tailings,and the content of sulphur and phosphorus in concentrate met the first grade of the quality standard of iron concentrate.
引文
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[14]陈铁军,庄骏,展礼仁,等.粉煤灰干湿联合磁选体铁试验研究[J].矿冶工程,2017,37(2):60-63.
[2]张迎春,杨秀红,施倪承.菱铁矿的综合利用研究[J].金属矿山,2001,295(1):48-50.
[3]罗立群.菱铁矿的选矿开发研究与发展前景[J].金属矿山,2006(1):68-72.
[4]春铁军,吴雪健,宁超,等.菱铁矿磁化焙烧与磁选分离制备铁精矿[J].过程工程学报,2016(16):233-237.
[5]蔡新伟,葛英勇,瞿军.重庆某菱铁矿石磁化焙烧-磁选试验[J].金属矿山,2015(11):66-69.
[6]Chun T J,Zhu D Q,Pan J.Simultaneously Roasting and Magnetic Separation to Treat Low Grade Siderite and Hematite Ores[J].Miner.Process.Extr.Metall.Rev.,2015,36(4):223-226.
[7]刘小银,余永富,陈雯.大西沟菱铁矿闪速磁化焙烧-磁选探索试验[J].金属矿山,2009(10):84-89.
[8]胡永会.细粒物料的干式磁选分析[J].有色金属(选矿部分),2013(4):52-55.
[9]尹江生,贺锐岗,沈凯宁.干式磁选工艺在某铁矿的应用实践[J].矿产保护与利用,2006(5):31-33.
[10]李洪潮,张成强,张颖新,等.干式永磁强磁选机在黑钨矿分选中的应用研究[J].中国矿业,2008,17(9):64-66.
[11]王陆新,周惠文,张宝才.利用干式磁选工艺回收铁矿石资源的试验研究[J].金属矿山,2007(7):87-90.
[12]高强,赵文广.蒙古矿高压辊磨干式磁选工艺研究[J].内蒙古科技大学学报,2017,36(1):1-4.
[13]阎赞,王露,王想,等.某超贫磁铁矿干式预选-湿式磁选试验研究[J].矿产综合利用,2017(5):27-31.
[14]陈铁军,庄骏,展礼仁,等.粉煤灰干湿联合磁选体铁试验研究[J].矿冶工程,2017,37(2):60-63.