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跳汰重选去除锆刚玉砖玻璃渣试验

责任编辑:金工机械 发表时间:2016-05-28 09:09

  玻璃熔窑是熔化玻璃液的一种热工设备。玻璃窑的窑衬一般是由几种耐火砖砌筑而成的。玻璃池窑与玻璃液接触的池壁和池底等部位,国内外普遍采用电熔锆刚玉砖砌筑。这种耐火材料在使用过程中会受到多种作用的破坏,高温下承受炉体及物料的荷重、操作过程中的外界应力;由于温度的急剧变化,受热不均而出现的极大温差,以及由此而产生的内应力;高温流体的冲刷以及高温流体炉渣、杂质元素的侵蚀;环境气氛的转变及作用等。这些作用导致了耐火材料的熔融软化、熔蚀磨损和崩裂损坏。耐火材料使用一定时间后,需拆除替换。替换下来的锆刚玉砖中,由于受玻璃液的渗透侵蚀作用,砖的表面及裂隙中赋存有大量的玻璃渣。这种含有玻璃渣的锆刚玉砖经粉碎后不能直接作为生产锆刚玉砖的原料。究其原因,玻璃渣中含有碱金属氧化物Na2O、K2O,这些氧化物如果带入所生产的锆刚玉砖中,将起到熔剂的作用,与SiO2等形成较多的玻璃相,使制品在较低温度下出现液相,且粘度低,从而影响耐火制品的高温性能。为充分利用废弃的耐火砖,节约成本,必须设法去除锆刚玉砖中的玻璃渣,使其性能达到生产锆刚玉砖原料的要求。目前,去除锆刚玉砖中玻璃渣常采用人工的方法,其劳动强度大,效率低,玻璃渣去除不彻底。本试验旨在通过采用重选去除玻璃渣这种物理选矿方法,代替繁重的人工法。

  SHIYANGQUZIHUNANMOUNAIHUOCAILIAOCHANGCONGBOLIRONGYAOZHONGCHAIHUANXIALAIDEFEIGAOGANGYUZHUAN,ZUIDAKUAIDUWEI300mm。YONGROUYANJIKEGUANCHADAO,ZHUANDEYIMIANSHENZHISANMIANDOUFUYOUBOLIZHA,QILIEXIJIKONGDONGBEIBOLITIANCHONG。SHIYANGPOSUIZHIXIAOYU4mmHOU,JINXINGLEGONGYIKUANGWUXUEYANJIU。JIEGUOBIAOMING,SHIYANGZHONGHANBOLI9.82%,ZHUYAOHUAXUECHENGFENWEI:Al2O3 43.51%、ZrO2 33.24%、SiO2 18.22%、Na2O 2.75%、Fe2O3 0.13%。

青海快3   DIANRONGGAOGANGYUZHUANSHIGAOWENXIAJIANGGONGYEYANGHUALV、GAOYINGSHIJINGKUANGZUOYUANLIAO,RONGHUAHOUJIAOZHUCHENGYIDINGXINGZHUANGDEZHIPIN。QIKUANGWUZUCHENGWEI ZrO230%~50%,Al2O330%~50%,SiO2BUDAYU20%,KUANGWUXIANGZHUYAOWEIGANGYU、XIEGAOSHIDEGONGJINGTI,SHAOLIANGDEXIEGAOSHI、GANGYUJIBOLIXIANG,SHIYIZHONGFEIJUNZHITI。JUYOUZHIPINZHIMI、QIKONGSHAO、TIJIMIDUDA,GAODEJIXIEQIANGDU,GAODEHEZHONGRUANHUAWENDU,REZHENWENDINGHAO,YOULIANGDEDIKANGRONGZHAQINSHIDENENGLI。DUIBENCISHIYANGZHONGJIANXUANCHULAIDEGAOGANGYUJINXINGLEWUZHICHENGFENFENXI,JIEGUOWEI:Al2O3 48.09%、ZrO2 36.79%、SiO2 13.19%、Na2O 1.30%、Fe2O3 0.13%。GAOGANGYUBIZHONG3.81。SHIYANGZHONGDEBOLIWEIPUTONGNAGAIBOLI,BIZHONG2.59kg/m³。ZHUYAOZUCHENGWEI:Al2O3 1.24%、SiO2 65.09%、Na2O 15.94%、K2O 1.20%、Fe2O3 0.10%。SHIYANGPOSUIHOUDELIDUZUCHENG、BOLIHANLIANGFENBUJIDANTIJIELIDUCEDINGJIEGUOZHONGKEKANCHU,BOLIZHADEQIANBULIDUJIAOCU,JIAOYIDANTIJIELI。SHIYANGPOSUIZHIXIAOYU4mmSHI,BOLIZONGDEDANTIJIELIDUDA86.9%;TONGSHI,BOLIXIANGDUIYUGAOGANGYUJIAOYIFENSUI,BOLIZAIXILIJIZHONGDEHANLIANGGAOYUCULIJIZHONGDEHANLIANG,LIDUYUEXI,QIHANLIANGYUEGAO。

  根据试样中玻璃易于单体解离的特点,先采用跳汰机去除0.5~4mm粒级中的玻璃较为合适。按照跳汰选矿给矿需分成较窄级别才有利于分选的特点,将大于0.5mm的试样分成2~4mm、1~2mm和0.5~1mm三个级别,再分别进行跳汰选别。各个粒级的跳汰尾矿合并磨矿至小于74μm占 40%的细度,与上述未进行选别的小于0.5mm粒级试样合并。通过筛分,得到大于0.1和小于0.1mm两个级别,然后进行摇床选矿。

  SHIYANGZHONGBOLIQIANBULIDUJIAOCU,YIDANTIJIELI,BOLIHEGAOGANGYUZHIJIANYOUYIDINGDEBIZHONGCHA,KEYONGZHONGXUANFAFENLI。DANLIANGZHEDEBIZHONGXIANGCHABUDA,YINGSHUYUZHONGXUANFAZHONGJIAONANXUANSHIYANG。

青海快3   YUYIBANJINSHUKUANGXUANBIEXIANGBI,SHIYANGZHONGDEZHONGKUANGWUHANLIANGDUO,CHAOGUO90%,QIAHAOYUJINSHUKUANGXUANBIEDEYUANLIAOXIANGFAN。YINCI,TIAOTAIZUOYEZHONGZHONGKUANGWUCHUANGCENGHOUSHIQITEDIAN。SHIYANZHONGFAXIAN, WEISHICHUANGCENGLVECHENGSONGSANZHUANGTAI,ZAICHONGCHENG、CHONGCISHIDANGPEIHEXIA,XUYAODESHUISUJIAODA。CISHI,KELIZHUYAOJIEZHUZHONGLIJIASUDUCHAXIANGDUIYUNDONG,LIDUYINGXIANGJIAOXIANZHU,SUOYITIAOTAIXUYAOZHAIJIBIERUXUAN。SHIYANGJINGFENJITIAOTAIHOU,TIAOTAIJINGKUANGZHONGDEBOLIHANLIANGKEJIANGZHI0.41%~0.73%,Na2OKEJIANGZHI1.36%~1.41%,ZUOYECHANLVWEI47.46%~51.37%。QIZHONG,1~2mmLIJIDETIAOTAIXIAOGUOZUIHAO,ZHONGKUANGWUCHANPINZHONGBOLIHANLIANGZUIDI,CHANLVZUIDA;0.5~1mmLIJIDEXUANBIEXIAOGUOZUICHA,ZHONGKUANGWUCHANPINZHONGBOLIHANLIANGGAO,CHANLVYEXIAO。

  SHANGSHUTIAOTAIWEIKUANGZHONGHAIHANYOUJIAODUODEGAOGANGYUYUBOLIDELIANSHENGTI,YAOSHITAMENWANQUANJIELI,XUJINGGUOMOKUANG。ZAIMOKUANGXIDUWEI40%DEXIAOYU74μmSHI,BOLIDEDANTIJIELIDUYIDA 95%YISHANG,GAIJIEGUOJINYIBUSHUOMINGBOLIJIAOYIDANTIJIELI。CISHI,SHIYANGDEZUIDALIDUWEI0.5mm,SHIHEYAOCHUANGFENXUAN。YAOCHUANGSHIYANHUODELERUXIAZHIBIAO:YAOCHUANGZHONGCHANPINZUOYECHANLVWEI 53.46%~61.25%,BOLIHANLIANG0.32%~0.39%,Na2OHANLIANG1.35%~1.37%;YAOCHUANGWEIKUANGZHONGBOLIHANLIANGDA61.15%~64.50%。CIJIEGUOSHUOMING,YAOCHUANGDEFENXUANJINGDUJIAOGAO。

  CAIYONGXIANTIAOTAIHOUYAOCHUANGDEZHONGXUANGONGYILIUCHENGNENGYOUXIAODIFAHUITIAOTAIJICHULILIDUCU、SHOUXIANHUODEJIAOCHUNDEGAOGANGYUYIJIYAOCHUANGDECHULILIDUJIAOXI、FENXUANJINGDUGAODETEDIAN。XIANYONGTIAOTAIXUANCHUCHUNDUJIAOGAO、YINGDUDADEGAOGANGYU,TIAOTAIWEIKUANGZHONGDEBOLIHANLIANGZENGJIA,ZHENGTIYINGDUBIANXIAO,BIANYUMOKUANG,KEJIANGDIMOKUANGCHENGBEN。TIAOTAIWEIKUANGZUOWEIYAOCHUANGJIKUANG,QIZHONGZHONGKUANGWUHANLIANGXIANGDUIJIANSHAO,SHIYAOCHUANGFENDAIGENGJIAMINGXIAN,YOULIYUYAOCHUANGDECAOZUOJINXING。

  WULIXUANKUANGQUCHUGAOGANGYUZHONGBOLIZHAYANJIUJIEGUOBIAOMING,HANNa2O 2.75%DEGAOGANGYUJINGZHONGXUANFAQUCHUBOLIHOU,Na2OHANLIANGKEJIANGZHI1.34%,GAOGANGYUHUISHOULVWEI83.8%,QIZHILIANGDADAOSJ-36GAOGANGYUZHUANDEYUANLIAOYAOQIU。SHIYANHUODEDEJIEGUOSHIMANYIDE,QIELIUCHENGJIANDAN。