Matte smelting is used in the extraction of

For sulphide ore, matte smelting is what type of process?

A

Hydro

B

Rare metal

C

Electric

D

Thermal

A matte is a name for molten sulphate phases which is formed during a smelting process.

A

True

B

False

What will be the extraction factor of the process of extraction for the first stage of the extraction under the staged counter current process of extraction?

A

λ = –\(\frac{K Q_E}{Q_R}\)

B

λ = \(\frac{K Q_E}{Q_R}\)

C

-λ = \(\frac{K Q_E}{Q_R}\)

D

λ = \(\frac{K – Q_E}{Q_R}\)

Converting process in the copper extraction is done to remove copper from the matte.

A

True

B

False

Mattee smelting is used in the extraction of

A

lead

B

zinc

C

aluminium

D

copper

In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :

A

Jet of water at high pressure

B

Blast of air

C

Mixture of water and air

D

Rain of molten lead

Which of the following is not a part of the layer of the products after the smelting process for the extraction of lead?

A

Slag

B

Base bullion

C

Lead

D

Sulphur dioxide gas

What is the purpose of smelting in the copper extraction process?

A

To increase the amount of heat

B

To decrease the concentration of copper

C

To add more copper to the ore

D

To separate metal sulphides in calcine

After the smelting process in the copper extraction, two layers of liquid are formed.

A

True

B

False

In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:

A

Jet of water at high pressure

B

Blast of air

C

Mixture of air and water

D

Rain of molten lead

Matte smelting is used in the extraction of

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