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If molten slag, a byproduct produced when
steel is manufactured in a blast furnace, is rapidly
cooled with jet water, granulated slag is produced.
Granulated slag is recycled as raw materials for cement,
etc.
By melting harmful substances such as
heavy metals and dioxins contained in
incinerated ashes in a newly developed electric resistance
furnace, it is possible to recycle them into harmless
substances.
