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Extraction Of Copper From Its Ore Slideshare

copper pyrites derives its name from its power to effect the liquefaction of earthy substances. Fluor spar is composed of calcium and fluorine; if it be Fig. 55.--Furnace for roasting Copper Ores. BB Working doors. v Vault for receiving the roasted ore. FIG. 56.--Furnace for roasting Copper Ores. Section through the line x v of the plan fig .

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