配方类型：	METALS
配方说明：	To Insulate molten Zinc Surface
配方组成：
配制方法：	A 3-inch layer of vermiculite insulation, placed on top of a vat that contains molten metal at 787f, is now being used by a large southern wire rolling mill to protect workers hands. This granular, mica-like material helps to maintain even temperatures and prevent unnecessary loss of heat.

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