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哪些原因会影响振动筛的筛分效果?

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人气:-发表时间:2021-08-28 10:20【

哪些(xie)原因会影响振动(dong)筛的筛分效果?

影响振动筛筛分效果的原因有:

1.振(zhen)动筛(shai)(shai)(shai)(shai)筛(shai)(shai)(shai)(shai)面(mian)性质及其(qi)结构参数的(de)(de)影响对于(yu)(yu)一(yi)定(ding)的(de)(de)物料而言(yan),筛(shai)(shai)(shai)(shai)子的(de)(de)生产率(lv)和筛(shai)(shai)(shai)(shai)分(fen)(fen)效率(lv)决(jue)定(ding)于(yu)(yu)筛(shai)(shai)(shai)(shai)孔(kong)尺(chi)寸。生产率(lv)取(qu)决(jue)于(yu)(yu)筛(shai)(shai)(shai)(shai)面(mian)宽度,筛(shai)(shai)(shai)(shai)面(mian)宽生产率(lv)高。筛(shai)(shai)(shai)(shai)分(fen)(fen)效率(lv)取(qu)决(jue)于(yu)(yu)筛(shai)(shai)(shai)(shai)面(mian)长(zhang)度,筛(shai)(shai)(shai)(shai)面(mian)长(zhang)筛(shai)(shai)(shai)(shai)分(fen)(fen)效率(lv)高。一(yi)般长(zhang)宽比为2。的(de)(de)筛(shai)(shai)(shai)(shai)子面(mian)积(ji)(即筛(shai)(shai)(shai)(shai)孔(kong)面(mian)积(ji)与整(zheng)个筛(shai)(shai)(shai)(shai)面(mian)面(mian)积(ji)之比)愈大,则(ze)筛(shai)(shai)(shai)(shai)面(mian)的(de)(de)单(dan)位面(mian)积(ji)生产率(lv)和筛(shai)(shai)(shai)(shai)分(fen)(fen)效率(lv)愈高。筛(shai)(shai)(shai)(shai)孔(kong)尺(chi)寸愈大,则(ze)单(dan)位筛(shai)(shai)(shai)(shai)面(mian)的(de)(de)生产率(lv)越(yue)(yue)大,筛(shai)(shai)(shai)(shai)分(fen)(fen)效率(lv)越(yue)(yue)高。

2.被筛(shai)(shai)(shai)(shai)分(fen)物(wu)(wu)料(liao)的(de)(de)(de)物(wu)(wu)理性质包括物(wu)(wu)料(liao)本身的(de)(de)(de)粒度(du)(du)组成、湿(shi)(shi)度(du)(du)、含泥量(liang)(liang)和粒子(zi)的(de)(de)(de)形状(zhuang)等。当(dang)物(wu)(wu)料(liao)细粒含量(liang)(liang)较(jiao)大时(shi),筛(shai)(shai)(shai)(shai)子(zi)的(de)(de)(de)生(sheng)产率(lv)也大。当(dang)物(wu)(wu)料(liao)的(de)(de)(de)湿(shi)(shi)度(du)(du)较(jiao)大时(shi),一般来说筛(shai)(shai)(shai)(shai)分(fen)效率(lv)都(dou)会降低(di)。但(dan)筛(shai)(shai)(shai)(shai)孔尺寸(cun)愈大,水(shui)分(fen)影(ying)响愈小(xiao),所以对于含水(shui)分(fen)较(jiao)大的(de)(de)(de)湿(shi)(shi)物(wu)(wu)料(liao),为了改善(shan)筛(shai)(shai)(shai)(shai)分(fen)过(guo)程(cheng),一般可以采(cai)用(yong)加大筛(shai)(shai)(shai)(shai)孔的(de)(de)(de)办(ban)法(fa),或者采(cai)用(yong)湿(shi)(shi)式(shi)筛(shai)(shai)(shai)(shai)分(fen)。物(wu)(wu)料(liao)含泥量(liang)(liang)大(当(dang)含泥量(liang)(liang)大于8时(shi))应当(dang)采(cai)用(yong)湿(shi)(shi)式(shi)筛(shai)(shai)(shai)(shai)分(fen),或预先(xian)洗矿。


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