熔渣 Traditional form: 熔渣 Pinyin (reading): róngzhā Definitions: slag (smelting) Characters: 熔 - mold; to fuse, to melt, to smelt 渣 - dregs, sediment; refuse, slag Traditional characters: 熔 - mold; to fuse, to melt, to smelt 渣 - dregs, sediment; refuse, slag