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Why Copper Matte Is Put in Silica Lined Converter? - CBSE (Science) Class 12 - Chemistry

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Question

Why copper matte is put in silica lined converter?

Solution

Copper matte contains Cu2S and FeS. Copper matte is put in a silica-lined converter to remove the remaining FeO and FeS present in the matte as slag (FeSiO3). Also, some silica is added to the silica-lined converter. Then, a hot air blast is blown. As a result, the remaining FeS and FeO are converted to iron silicate (FeSiO3) and Cu2S is converted into metallic copper.

`2FeS + 3O_2 -> 2FeO + 2SO_2`

`FeO + SiO_2 -> FeSiO_3`

`2Cu_2S + 3O_2 -> 2Cu_2O+2SO_2`

`2Cu_2O +Cu_2S -> 6Cu +SO_2`

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 6: General Principles and Processes of Isolation of Elements
Q: 17 | Page no. 164

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Solution Why Copper Matte Is Put in Silica Lined Converter? Concept: Extraction of Crude Metal from Concentrated Ore.
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