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Gravity Separation

Partial roast...

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Partial roasting done for cu ore to obtain copper matte is a method of reduction or concentration of ore?

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Q. Copper matte is obtained by fusion of roasted copper sulphide concentrates or ores to separate the copper sulphide from the gangue.

If true enter 1,if false enter 0.

Q. Partial roasting of sulfide ore is done in the metallurgy of copper called ____________.

Reduction to free metal: some of the methods commonly used to get free metal from the concentrates ore are below.

Smelting: The process of extracting a metal in the state of fusions is called smelting. In this process the ore is mixed with carbon and heated in suitable furnace

Electrolytic reduction process: This process is used in the extraction of the alkali and alkaline earth metals, zinc and aluminium.

Self reduction process: The sulphide ores of less electropositive metals like Hg, Pb, Cu etc., are heated in air so asto convert part of the ore into oxide or sulphate which then reacts with the remaining sulphide ore to give the metal.

After partial roasting, the sulphide of copper is reduced by :

Q. Although there are several ores, 80% of the world copper production comes from the ore chalcopyrite (

C u F e S_{2}

). The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction. Partial roasting of chalcopyrite produces:

Q. Reduction for which ore should be partially roasted is:

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