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型煤落下強(qiáng)度的標(biāo)準(zhǔn)

2016-04-24  來(lái)自: 華維科力 瀏覽次數(shù):2129

將粒度60 --100mm的塊煤,從2m高處自由落下到規(guī)定厚度的鋼板上,然后使大于25mm的塊煤再次落下,如此落下破碎三次,以破碎后大于25mm的塊煤占原煤樣的質(zhì)量分?jǐn)?shù)表示煤的抗碎強(qiáng)度(%),按下式計(jì)算。SS= m1÷mX 100%

SS-煤的抗碎強(qiáng)度,%

M1—落下試驗(yàn)后大于25mm 塊煤質(zhì)量,kg;

M-落下試驗(yàn)前塊煤質(zhì)量,kg

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