计算题:水泥磨机正常运转后,分别在出磨斜槽、粗粉斜槽及细粉斜槽各取5个样,其0.08mm筛孔平均筛余分别是34.2%、46.55%、6.46%,求其循环负荷率及选粉效率。
正确答案:
已知:a=34.42% b=46.55% c=6.46%
L.[(100-c)-(100-a)]/[(100-a)-(100-b)]*100%
=[(100-6.46)-(100-34.42)]/[(100-34.42)-(100-46.55)]*100%=231%
Y.[(100-c)/(100-a)]*[(100-a)-(100-b)/(100-c)-(100-b)]*100%=[(100-6.46)/(100-34.42)]*[(100-34.42)-(100-46.55)/(100-6.46)-(100-46.55)]*100%=43.1%
L.[(100-c)-(100-a)]/[(100-a)-(100-b)]*100%
=[(100-6.46)-(100-34.42)]/[(100-34.42)-(100-46.55)]*100%=231%
Y.[(100-c)/(100-a)]*[(100-a)-(100-b)/(100-c)-(100-b)]*100%=[(100-6.46)/(100-34.42)]*[(100-34.42)-(100-46.55)/(100-6.46)-(100-46.55)]*100%=43.1%
答案解析:有
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