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縮制煤樣的全過程及原理是什麽？

发布时间：2014-02-16 点击次数：1494次

煤炭化驗知識，煤質分析常識，煤炭化驗儀器縮制煤樣的全過程和原理，包括破碎、過篩、摻合、縮分幹燥五個環節，當需要使用浮煤作煤質分析化驗時，還要進行減灰步驟：

1、缩分使煤样减少。又不失往其代表性

2、干燥使煤样能畅通地通过破碎机、缩分机、二分器和筛子时，不能粘附在筛子上：

3、减灰对需减灰的煤样，将原煤样放进重液中进行浮选

4、破碎目的是减小粘度，增加煤粒分散程度，要用各种筛孔筛分

6、掺合为使缩分后的煤样不失往代表性，每次缩分前都应掺合，使其均匀化，掺合煤样采用堆堆法。

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