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economic For making blast for building toothed roll crusher sell at a loss

economic For making blast for building toothed roll crusher sell at a loss

Oct 29 2020 · Blast Furnace – Basic Oxygen Furnace BF – BOF This method uses iron ore coal and some recycled steel Iron ores are reduced to iron and then converted to steel in blast furnaces Steelmakers cast and roll the steel and deliver it as coils plates sections or bars The BF – BOF method accounts for about 75 of global steel production

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