fresh iron
... free iron 游离铁 fresh iron 初熔铁 girder iron 梁钢, 梁铁 ...
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研究结果表明，未燃煤粉以固体质点形式分散在初渣内部时，使初渣粘度大大增加，渣铁熔体难以滴落；
The result shows that the viscosity is greatly increased while the solid coal powder distributed in the inside of slag and result in poor separation of molten iron and slag.
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