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煤炭機械化采樣的一般原則
作者:卓越科技 發布日期:2023-02-13 09:24:59

煤炭采樣和制樣的目的,是為了獲得一個其試驗結果能代表整批被采樣煤的試驗煤樣。

采樣和制樣的基本過程,是首先從分布于整批煤的許多點收集相當數量的一份煤,即初級子樣,然后將各初級子樣直接合并或縮分后合并成一個總樣,zui后將此總樣經過一系列制樣過程制成所要求數目和類型的試驗煤樣。

采樣的基本要求,是被采樣批煤的所有顆粒都可能進入采樣設備,每一個顆粒都有相等的機率被采入試樣中。

為了保證所得試樣的試驗結果的jing密度符合要求,采樣時應考慮以下因素:

a)煤的變異性;

b)從該批煤中采取的總樣數目;

c)每個總樣的子樣數目;

d)與標稱zui大粒度相應的試樣質量。


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