Nov 16, 2016 It contains 2 3 impurities which is purified by melting in a furnace hearth. MANUFACTURE OF COPPER (WELSH+MANHE’S) Fig. Welsh Process 6. Md. Habib Ullah Khan, Lecturer, ME, KUET MANUFACTURE OF COPPER (WELSH+MANHE’S) iii. Smelting a) The roasted ore is mixed with coke and silica (sand) and charged into the top of the blast furnace.Send Message Get Price
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