青海快3

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国内某钨矿选厂应用细粒跳汰机分选效果分析

责任编辑:admin 发表时间:2016-05-07 10:00

  跳汰机青海快3是在上下交变的脉动水流中选别粗、中粒矿石的重要重选设备,它不仅用于金属矿石的分选而且也用于某些非金属矿石的选别。在钨、锡重选厂中,跳汰选别是实现“能收早收”、“早收多收”原则的重要措施,有的选厂,跳汰机回收的金属量占全厂总回收金属量的80%以上。因此,重视跳汰选别在重选厂的作用,深入研究跳汰选别工作原理,意义重大。本文结合某钨矿的跳汰作业改造实际,重点分析水动力作用对跳汰机分选效果的影响。

  矿物颗粒在跳汰机中的受力情况和运动微分方程,根据维诺格拉道夫的分析表达。方程式的第一项是重力加速度因素,只与矿粒的密度和介质密度有关,与水动力作用基本无关,是矿粒按密度分层的内因。第二项是因介质作加速运动引起的附加阻力加速度。它对矿物分选的影响与介质的加速运动方向有关。加速度向上时,有利于矿物按比重分选,加速度向下时,对按比重分选不利,故跳汰曲线设计时向下的水流加速度以尽量减少为宜。第三项是由矿粒与水流作相对运动而形成的速度阻力加速度,它不仅与矿粒的密度有关,而且与矿粒的粒度有关。是跳汰分选中水动力作用影响的主要表现项,它对推动床层松散和按比重分层起到了重要的外因作用,反过来选择不当也是影响跳汰分选效果的最主要因素。

青海快3   ZAITIAOTAIFENXUANGUOCHENGZHONG,YOUSHUIDONGLIZUOYONGDESUDUZULIHEFUJIATUILIGONGTONGJUEDINGZHEFENXUANXIAOGUODEHAOHUAI,ERSUDUZULIHEFUJIATUILIYOUSUIZHETIAOTAIJICHONGCHENG、CHONGCIZUHEBUTONGERJUYOUBUTONGDEXIANGDUIDAXIAO。ZENGJIACHONGCI,JIASUDUZULIZENGDA,FENXUANZHOUQISHIJIANSUODUAN,KELINANYILAKAIDADEYUNDONGJULI,YANZHONGSHICHUANGCENGBIAOXIANWEIXIANGYIGEDAKUANGKUAISIDEZHENGTISHANGSHENGYOUZHENGTIXIAJIANG,FENCENGZUOYONGWEIRUO,GUGUODADEJIASUDUTUILIDUIFENXUANBULI。ZENGDACHONGCHENG,JIANXIAOCHONGCI,SUDUZULIZENGJIA,FENXUANZHOUQIYANZHANG,CHUANGCENGBIANDESONGSAN,YOULIANMIDUFENXUAN。DANGUODADECHONGCHENG,YOUHUIZAOCHENGSUDUZULIGUODA,ANBIZHONGFENXUANXIAOGUOBIANHUAI,YANZHONGSHIWEIKUANGPAOXILIWUDANTI。GUSHIYIDEFENXUANTIAOJIANYINGSHIZAICHONGCHENG、CHONGCISHIDANGDEPEIHEXIA,SHICHUANGCENGLVECHENGSONGSANZHUANGTAI,KELIZHUYAOJIEZHONGLIJIASUDUCHAXIANGDUIYUNDONG,ZHEIYANGZUIYOULIYUKUANGLIZAITIAOTAIJIZHONGANBIZHONGFENXUAN。

  JIKUANGSHUIDEZUOYONGZHUYAOSHIYONGLAIYUXIANSHIRUNKUANGSHI,XIAOCHUJITUANXIANXIANGBINGBIANYUKUANGSHIJUNYUNDIJIKUANGHEPAIKUANG,JIKUANGSHUIBUYIGUODA,ANNONGDUJIYIBAN25%ZUOYOUWEIYI。JIKUANGSHUIGUODASHICHANSHENGYIXIAYINGXIANG:YISHICHONGSHUANCHUANGCENG,ZAOCHENGDIYISHICHUANGCENGBUWEN,CHUANGMIANFANHUA;ERSHIZONGXIANGLIUSUGUODA,FENXUANSHIJIANSUODUAN,XILIJINSHUSUNSHIZENGJIA,FENXUANXIAOGUOBIANCHA。

  SHAIXIABUJIASHUIKEYISHILIANXUBUJIAYEKEYISHIJIANDUANBUJIA,QIZUOYONGZHUYAOSHIQIZHEDIAOZHENGCHUANGCENGDESONGSANFENCENG。ZAITIAOTAISHANGSHENGSHUISUJIEDUAN,SHAIXIABUJIAXIAQIZHEZENGDACHUANGCENGSONGSANDUDEZUOYONG;ZAIXIAJIANGSHUILIUJIEDUAN,SHAIXIABUJIASHUIQIZHEDIAOJIEXIAJIANGSHUILIUDEXIRUZUOYONG,KONGZHISHAIXIAPAICHUJINGKUANGDEZHILIANGHESHULIANG。DANZONGDELAISHUO,YIBANYOUSHAIXIABUJIASHUIGOUCHENGDESHANGSHENGSHUISUSHIBUDADE,YUEZAI0.2-0.6cm/sFANWEINEI。

  某钨矿选厂磨重车间#3、4跳汰机都属于细粒跳汰机青海快3。在未经改造前现场考察,#3跳汰机的给矿主要为双筛下-2mm的合格矿,给矿品位较高,给矿浓度也比较正常。#4跳汰机的给矿大部分为#1、2粗、中粒跳汰尾矿经棒磨及磨后跳再回收后的尾矿产品,还有一部分为手选分级洗矿得到的螺旋分级机溢流。因此,#4跳汰机的给矿品位低,给矿浓度也很低。根据当时的测定数据,跳汰作业改造前#4跳汰机的给矿浓度只有10%左右。浓度太低,纵向流速太大,跳汰室变成了过水溜槽,跳汰室内床层晃荡翻滚,不能形成稳定的分选床层。经综合分析,#3、4跳汰机选别中存在的问题主要有以下几个方面。

青海快3   1、#3、4TIAOTAIJIJIKUANGFENPEIBUDANG,JIKUANGPINWEICHAJUTAIDA。

青海快3   2、#4TIAOTAIJIDEJIKUANGNONGDUTAIDI,ZHISHITIAOTAISHIZHONGXINGCHENGBULEWENDINGDEFENXUANCHUANGCENG,YINGXIANGTIAOTAIXUANBIEXIAOGUO。

青海快3   3、MOHOUTIAOWEIKUANGJILUOXUANFENJIJIYILIUBUJINGNONGSUOTUOSHUI,QUANBUZHIJIEJINRUXILITIAOTAIZUOYE,SHIZAOCHENG#4TIAOTAIJIJIKUANGNONGDUTAIDIDEZHUYAOYUANYIN。

青海快3   4、TIAOTAIJICHONGCHENG、CHONGCIWEIJINGDIAOYOU,FENXUANXIAOGUOJIAOCHA。

  WEILEMOQINGGAIZAOQIAN#3、4TIAOTAIJIDEZUOYEZHUANGKUANGHEZUOYEXIAOGUO,ZAIJINXINGLEYOUGUANQUYANGDIANGAIZAOGONGZUOHOU,ANPAILE#3、4XILITIAOTAIJIDECANSHUCEDINGHEXUANKUANGCHANPINQUYANGGONGZUO。

青海快3   GENJUCEDINGJIEGUO,#3、4TIAOTAIJIDEZUOYETIAOJIANBUTAISHIDANG,SHUIDONGLIZUOYONGDUITIAOTAIFENXUANZAOCHENGHENDUOBULIYINGXIANG,YOUQISHI#4TIAOTAIJI,JIKUANGNONGDUTAIDI,ZONGXIANGLIUSUTAIDA,YINQICHUANGCENGHUANGDANGFANGUN。LINGWAI#3、4TIAOTAIJIDEJIKUANGPINWEICHAYITAIDA,CHONGCHENG、CHONGCIZUHEYEBUJINHELI,ZHEIXIEDOUSHIZAOCHENG#4TIAOTAIJIZUOYEHUISHOULVDIDEZHUYAOYUANYIN。

青海快3   WEILEJIEJUE#3、4TIAOTAIJIXUANBIEZUOYEZHONGCHUXIANDEWENTI,TIGAOXILITIAOTAIJIDEZONGTIFENXUANXIAOGUO,ZHENDUIFAXIANDEWENTI,ZAIXIANCHANGLINGDAOHEJISHURENYUANDEZHICHIXIA,JINXINGLEXILITIAOTAIZUOYEDEJISHUGAIZAOHEJISHURENYUANDEZHICHIXIA,JINXINGLEXILITIAOTAIZUOYEDEJISHUGAIZAOHEZUOYECANSHUDIAOYOU,YIYOUHUATIAOTAIFENXUANGUOCHENGZHONGDESHUIDONGLIZUOYONG,TIGAOTIAOTAIZUOYEDEFENXUANXIAOGUO。

青海快3   1、ZAISHUANGSHAIJILIAOQIANJIANLINONGSUOTUOSHUICHI,JIANGMOHOUTIAOWEIKUANGHESHOUXUANQIANTUOSHUILUOXUANFENJIJIYILIUZAIJIRUSHUANGSHAIQIANJINXINGTUOSHUINONGSUO,TUOCHUDIAODABUFENDEYILIUHEXINI,YIWENDING#3、4TIAOTAIJIDEJIKUANGNONGDU。

  2、#3、4TIAOTAIJIDEJIKUANGWULIAOZAIJINRUSHUANGSHAIQIANQUANBUJIZHONGDAONONGSUOTUOSHUICHI,JINGTUOSHUITUONIHOUZAIYOUSHUANGSHAIPINGJUNFENPEIJI#3、4TIAOTAIJI。ZHEIYANG,JIBAOZHENGLE#3、4TIAOTAIJIKUANGDEJUNYUNXING,YOUYOULIYUZONGTITIGAO#3、4TIAOTAIJIDEZUOYEHUISHOULV。

  3、JINXINGLE#3、4TIAOTAIJIZUOYECANSHUDEXIANCHANGDIAOYOUGAIZAO。DUIYU-2mmLIJIJIKUANGDEXILITIAOTAIJI,ZONGHELILUNTUIDAOHEXIANCHANGJINGYANZONGJIE,JINGGUODIAOYOUCESHI,ZUIHOUQUEDING:#3TIAOTAIJIL=6mm,n=320r/min;#4TIAOTAIJIL=5.5mm,n=340r/min。

  JINGGUOSHUANGSHAIJIKUANGQIANDETUOSHUINONGSUO,DADATIGAOLEJIKUANGNONGDU,XIAOCHULENONGDUTAIDI、CHUANGCENGFANHUAWENLUANYIJIZONGXIANGZHULIUSUTAIDADEYINGXIANG。TONGGUODIAOZHENGJIKUANGDIANHEJIKUANGLIANG,SHI#3、4TIAOTAIJIDEJIKUANGXINGZHIBIANDEJUNYUN。DUI#3、4TIAOTAIJIDECHONGCHENG、CHONGCIDIAOYOUGAIZAO,SHITIAOTAIJIZHONGDESHUIDONGLIZUOYONGXIAOGUODADAOJIAOYOUZHUANGTAI,SHITIAOTAIJIZHONGDESHUIDONGLIZUOYONGXIAOGUODADAOJIAOYOUZHUANGTAI,FEICHANGYOULIYUXILITIAOTAIANBIZHONGFENXUAN,TIAOTAIJIDEZUOYEXIAOGUOMINGXIANGAISHAN,YOUQISHI#4TIAOTAIJI,QIZUOYEHUISHOULVBIGAIZAODIAOZHENGQIANYOULEHENDATIGAO。

青海快3   LILUNYANJIUHESHENGCHANSHIJIANBIAOMING,SHUIDONGLIZUOYONGSHIYINGXIANGTIAOTAIFENXUANXIAOGUODEZHUYAOYINSU。RENHEYIGETIAOTAIFENXUAN,RUOSHUIDONGLIZUOYONGXUANZEBUDANG,ZEHENNANDEDAOHAODEFENXUANXIAOGUO。ZAISHUIDONGLIZUOYONGYINSULIMIAN,CHONGCHENGCHONGCIDESHIYIZUHE,SHIZAOCHENGCHUANGCENGSHIYISONGSAN,YOULIYUKUANGWUANBIZHONGFENCENGDEGUANJIANYINSU。JIKUANGNONGDUDEHELIKONGZHI,KEYISHIFENXUANCHUANGCENGWENDING,CHANPINPAICHUSUDUHELI,FENXUANSHIJIANDEDAOBAOZHENG。SHAIXIABUJIASHUIDEDAXIAODEDANG,DUIYUDIAOJIECHUANGCENGSONGSAN,BAOZHENGSHAIXIAJINGKUANGDEZHILIANGQIZHEZHONGYAOZUOYONG。ZONGZHI,FENXUANKUANGWUDEMIDUCHASHITIAOTAIFENXUANDENEIYIN,XUANZEHEKONGZHIHELIDESHUIDONGLIZUOYONGSHITIAOTAICHENGGONGFENXUANDEWAIYIN,ZHIYOUZONGHEYOUHUATIAOTAIFENXUANGUOCHENGZHONGDESHUIDONGLIYINSU,CAINENGDEDAOHAODETIAOTAIJINGKUANGPINWEIHEHUISHOULV。