礦石破碎前的預先篩分的重要性

      下麵振動篩廠家大漢機械為您簡述預先篩分在破碎作業中的重要性：
      預先篩分是在礦石進入該破碎段之前預先篩出合格的粒級，可以減少進入破碎機的礦量，提高破碎機的生產能力
；同tong時shi可ke以yi防fang止zhi富fu礦kuang石shi產chan生sheng過guo粉fen碎sui。在zai處chu理li含han水shui分fen較jiao高gao和he粉fen礦kuang較jiao多duo的de礦kuang石shi時shi
，潮chao濕shi的de礦kuang粉fen會hui堵du塞sai破po碎sui機ji的de破po碎sui腔qiang
，並bing顯xian著zhe降jiang低di破po碎sui機ji的de生sheng產chan能neng力li。利li用yong預yu先xian篩shai分fen除chu掉diao濕shi而er細xi的de礦kuang粉fen，可ke為wei破po碎sui機ji造zao成cheng較jiao正zheng常chang的de工gong作zuo條tiao件jian。

　　預先篩分的應用主要根據礦石中細粒級（小於該段破碎機排礦口寬度的粒級）dehanlianglaijueding。xilijihanliangyugao
，posuijicaiyongyuxianshaifenyuyouli。yanjiuzhengming，jishushanghejingjishangcaiyongyuxianshaifenyoulidekuangshi
，qizhongxilijidejixianhanliangyuposuijideposuibiyouguan。dangyuankuanglidutexingweizhixianshi，zaigezhongposuibidetiaojianxia，posuijiqizhongxilijidehanliangjunchaoguoleshangshujixianzhi（即有利於采用預先篩分的極限含量。

　　youcikezhi
，dangyuankuanglidutexingweizhixianshi，buguanposuijiposuibiweiduoda，caiyongyuxianshaifenzongshiyoulide。duoshuqingkuangxia

，yuankuangdelidutexingchengaoxing，guposuiqiancaiyongyuxianshaifenzaijingjishangdoushihesuande。posuijidanyouyucaiyongyuxianshaifenxuyaozengjiachangfanggaodu，dangcusuijideshengchannengliyoufuyu，huocaiyongzhijiejimangeikuangshi，kebusheyuxianshaifen。

　　jianzhashaifendemudeshiweilekongzhiposuichanpindelidu，bingliyuchongfenfahuiposuijideshengchannengli。yinweigezhongposuijideposuichanwuzhongdoucunzaiyibufendayupaikuangkoukuandudeculiji，ruduantouyuanzhuiposuijizaiposuizhongdengkesuixingkuangshishi，chanwuzhongdayupaikuangkoukuan。dudelijihanliangda60%
，大粒度為排礦口的2.2~2.7倍
；在破碎難碎性礦石時則更甚。各種破碎機破碎產物中粗粒級（大於排礦口尺寸）含量和大相對粒度（即大顆粒與排礦口尺寸之比）。

　　caiyongjianzhashaifenhou

，shibuhegedelijifanhuiposuiji，jiurutongmokuangjiyufenjijichengbiluxunhuanyouliyutigaomokuangxiaolvyiyang
，jianzhashaifenduiposuijishengchannenglidefahuikeyigaishan。danjianzhashaifendecaiyong
，huishitouzizengjia，bingshiposuichejiandeshebeipeizhifuzahua，guyibanzhizaimoyigeposuijiposuiduancaiyongjianzhashaifen，erqieyuyuxianshaifenhebinggouchengyuxianjianzhashaifenbiluxunhuan。