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煤炭化驗設備揮發分的含義及頂的技術要求

发布时间：2014-03-03 点击次数：1391次

煤炭化驗設備揮發分的含義及頂的技術要求

煤炭挥发分是指煤样在900±10℃隔绝空气的条件下加热7min，由煤中有机物分解出来的气体和液体（呈蒸汽状态）的产物，煤炭挥发分的测定是一项规范性很强的试验，其测定的结果完全取决于所规定的实验条件，所以在测定燃煤挥发分时，对测定的技术要求很严。下面就由鹤壁华通分析仪器有限公司为大家具体的介绍一下煤炭化验设备挥发分的技术要求：

具體如下：煤炭揮發分測定的技術要求：（1）高溫爐內溫度應嚴格控制在900±10℃的範圍內，當放進試樣後，爐溫應在5min內恢複到900±10℃。（2）加熱時間的計時應用秒表，即當試樣一送入高溫爐的高溫區開始計時，到試樣離開高溫爐的高溫區開始計時，到試樣離開高溫爐爲止，這一操作過程應准確爲7min，否則，試樣做報廢處理。（3）測定時應用專用的嚴密灰發坩埚，當坩埚在爐內灼燒時應避免坩埚與坩埚之間，坩埚與高溫爐壁的直接接觸。（4）在測定時，如坩埚或坩埚蓋上具有黑煙時，試驗也做報廢處理。

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