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智能馬弗爐測定煤炭揮發份應如何操作結果更精確？

发布时间：2013-04-01 点击次数：1468次

智能馬弗爐測定煤炭揮發份應如何操作結果更精確？

智能馬弗爐測定煤炭揮發份時應如何操作結果更精確呢？

1、使用智能馬弗爐測定煤炭揮發分時，首選用電子分析天平稱量煤樣前，揮發坩埚應在900±10℃的溫度下灼燒至恒重.

2、電子分析天平稱取的煤炭試樣質量應在1±0.01g範圍內，並使煤焦試樣攤平。

3、智能馬弗爐要有足夠的恒溫區。

4、揮發坩埚要符合要求用揮發專用坩埚。

5使用智能馬弗爐測定時要注意觀察智能馬弗爐的爐溫在3分鍾內要恢複到900±10℃。

6、智能馬弗爐的熱電偶要安裝正確並要定期校驗。

7、智能馬弗爐的爐爐膛要密封。

8、坩埚架要符合要求使用鎳鉻材質。

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