Using self-made carbon steel crucible instead of poroelain crucible is an economical, practical, simple and raoid way to determine the carbon content in cement raw meal with phosphogypsum.

用自制碳钢材蜗代替瓷材蜗，测定磷石膏制水泥生料中的碳含量，经济实用，简便、快速。

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The results show that the main components of inclusion are carbon and oxygen. Carbon impurity comes from graphite crucible and heater, while oxygen impurity from the oxides in the raw material…

分析结果表明：包裹物的主要成分是碳和氧，碳来源于石墨坩埚和石墨发热体，而杂质氧则来源于原料中的含氧化合物和生长过程气氛中氧的进入。

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Using small-sized semicoke can avoid lacking carbon in furnace bottom and is favourable to inserting electrode deeply, enlarging crucible and reducing eletricity consumption.

使用小粒度半焦可避免炉底缺碳，有利于电极深插，扩大坩埚，降低硅铁冶炼电耗。

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