宋陵礦山設備專家認為，干(gan)法篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)時應先將(jiang)標準試(shi)驗篩(shai)(shai)(shai)(shai)(shai)(shai)按順序套好，把試(shi)樣倒(dao)入(ru)最上層(ceng)篩(shai)(shai)(shai)(shai)(shai)(shai)面上，蓋(gai)上頂蓋(gai)，放(fang)到振(zhen)篩(shai)(shai)(shai)(shai)(shai)(shai)機上篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)15分(fen)(fen)(fen)鐘左右，然后將(jiang)最下層(ceng)篩(shai)(shai)(shai)(shai)(shai)(shai)子取下，用(yong)手持(chi)篩(shai)(shai)(shai)(shai)(shai)(shai)子在(zai)橡膠布火光(guang)面紙(zhi)上進行檢(jian)查篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)。如果一分(fen)(fen)(fen)鐘內所得(de)(de)篩(shai)(shai)(shai)(shai)(shai)(shai)下物(wu)(wu)料量(liang)小(xiao)于篩(shai)(shai)(shai)(shai)(shai)(shai)上物(wu)(wu)料量(liang)得(de)(de)0.1-0.5%，就可以(yi)認為篩(shai)(shai)(shai)(shai)(shai)(shai)析已達終點，否(fou)則還有(you)放(fang)回振(zhen)篩(shai)(shai)(shai)(shai)(shai)(shai)機上繼續篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)。篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)結(jie)束后，將(jiang)各粒級產品倒(dao)出稱量(liang)。為清(qing)除(chu)篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)中(zhong)的(de)難篩(shai)(shai)(shai)(shai)(shai)(shai)顆粒，可將(jiang)篩(shai)(shai)(shai)(shai)(shai)(shai)子倒(dao)置，然后用(yong)手輕(qing)(qing)輕(qing)(qing)拍擊篩(shai)(shai)(shai)(shai)(shai)(shai)框(kuang)，使(shi)嵌在(zai)孔(kong)中(zhong)的(de)顆粒振(zhen)落，也可使(shi)用(yong)軟毛刷清(qing)掃，但對100微(wei)米以(yi)下的(de)篩(shai)(shai)(shai)(shai)(shai)(shai)網，毛刷常使(shi)篩(shai)(shai)(shai)(shai)(shai)(shai)絲(si)扭曲，篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)變(bian)形。篩(shai)(shai)(shai)(shai)(shai)(shai)孔(kong)堵塞(sai)過(guo)多時，須置水中(zhong)用(yong)超(chao)聲(sheng)波清(qing)洗(xi)干(gan)凈(jing)，才能供下次使(shi)用(yong)。篩(shai)(shai)(shai)(shai)(shai)(shai)分(fen)(fen)(fen)損失量(liang)不應超(chao)過(guo)0.5-1%。

含(han)泥多的粘結性物(wu)料，須(xu)采用(yong)干(gan)、濕聯合(he)法(fa)(fa)篩(shai)(shai)(shai)析。此時(shi)可先將試(shi)樣用(yong)水(shui)(shui)(shui)浸濕泡散，或(huo)直(zhi)接(jie)倒(dao)在細孔篩(shai)(shai)(shai)上(shang)(shang)(shang)，用(yong)手持篩(shai)(shai)(shai)子在水(shui)(shui)(shui)盆(pen)內進行篩(shai)(shai)(shai)分。為提高篩(shai)(shai)(shai)分效率，應(ying)將篩(shai)(shai)(shai)子不斷地搖(yao)動(dong)，但(dan)不要提出水(shui)(shui)(shui)面(mian)。盆(pen)中水(shui)(shui)(shui)過度渾濁時(shi)須(xu)另(ling)換一盆(pen)清水(shui)(shui)(shui)繼(ji)續篩(shai)(shai)(shai)分，直(zhi)至盆(pen)中水(shui)(shui)(shui)不再變濁為止。然后將篩(shai)(shai)(shai)上(shang)(shang)(shang)物(wu)料烘(hong)干(gan)并稱重，再按(an)干(gan)法(fa)(fa)進行篩(shai)(shai)(shai)析，底層(ceng)篩(shai)(shai)(shai)篩(shai)(shai)(shai)下(xia)物(wu)料與濕篩(shai)(shai)(shai)時(shi)篩(shai)(shai)(shai)下(xia)的細泥合(he)并，篩(shai)(shai)(shai)上(shang)(shang)(shang)各(ge)級分布(bu)收集。近年來已設計出可供濕法(fa)(fa)篩(shai)(shai)(shai)析用(yong)的套篩(shai)(shai)(shai)和振篩(shai)(shai)(shai)機，水(shui)(shui)(shui)流(liu)從頂蓋(gai)上(shang)(shang)(shang)的噴流(liu)水(shui)(shui)(shui)管給入，經(jing)各(ge)層(ceng)篩(shai)(shai)(shai)網，由底盤側邊排水(shui)(shui)(shui)管流(liu)出。

篩(shai)析所需試(shi)樣(yang)的最(zui)小(xiao)重量取決于(yu)最(zui)大粒的尺(chi)寸。每(mei)次給入成(cheng)套試(shi)驗篩(shai)的試(shi)樣(yang)量以25-150克為宜(yi)。如果超過很多，就(jiu)應分(fen)幾次篩(shai)分(fen)。直接用75微米篩(shai)濕(shi)篩(shai)時，每(mei)次篩(shai)分(fen)試(shi)樣(yang)量不宜(yi)超過50克。不適宜(yi)于(yu)濕(shi)篩(shai)的細物(wu)料(liao)，可使用氣(qi)流噴(pen)射(she)篩(shai)篩(shai)析。

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