Home
Class 12
CHEMISTRY
Why is sulphide ore of copper heated in ...

Why is sulphide ore of copper heated in a furnace afer mixing with silica?

Text Solution

Verified by Experts

Ferrous oxide present as impurity in sulphide ore of copper combines with silica ( ` SiO _ 2 `) to form ferrous silicate slag while copper is produced in form of copper matte which chiefly consists of ` Cu _ 2 S ` and some unchanged FeS.
` " " FeO + SiO _2 overset (Delta ) to underset ("Ferrous silicate (slag)")(FeSiO _ 3) `
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (SHORT ANSWER QUESTIONS)|1 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MATCHING TYPE QUESTIONS)|5 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS - II)|1 Videos

  • ELECTROCHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|25 Videos

  • HALOALKANES AND HALOARENES

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|22 Videos

Similar Questions

Explore conceptually related problems

Sulphide ore is

The sulphide ore of copper are heated in reverberatory furnace. If the ore contains iron, it is mixed with silica (SiO_(2)) before heating. Iron oxide slags off as iron silicate then SiO_(2) acts as a:

Silica is added to the sulphide ore of copper in reverberatory furnace because

Why are sulphide ores converted to oxide before reduction?

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matte obtained from the blast furnace is charged into a silica-lined converter. Some silica is also added, and a hot air blast is blown into the mixture to obtain blister copper, which is purified by electrorefining. The chemical formula of copper pyrites is.

PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS - II )
  1. In which of the following method of purification metal is converted to...

    Text Solution

    |

  2. Which of the following statements are correct ?

    Text Solution

    |

  3. In the extraction of chlorine from brine

    Text Solution

    |

  4. At temperature above 1073K coke can be used to reduce FeO to Fe. How c...

    Text Solution

    |

  5. Wrought iron is the purest form of iron. Write a reaction used for the...

    Text Solution

    |

  6. How is copper extracted from low grade copper ores?

    Text Solution

    |

  7. Write two basic requirements for refining of a metal by Mond process a...

    Text Solution

    |

  8. Although carbon and hydrogen are better reducing agents but they are n...

    Text Solution

    |

  9. How do we separate two sulphide ores by Froth Floatation Method? Expla...

    Text Solution

    |

  10. The purest form of iron is prepared by oxidising impurities from cast ...

    Text Solution

    |

  11. The mixture of compounds A and B is passed through a column of Al(2)O(...

    Text Solution

    |

  12. Why is sulphide ore of copper heated in a furnace afer mixing with sil...

    Text Solution

    |

  13. Why are sulphide ores converted to oxide before reduction?

    Text Solution

    |

  14. Which method is used for refining Zr and Ti? Explain with equation.

    Text Solution

    |

  15. What should be the considerations during the extraction of metals by e...

    Text Solution

    |

  16. What is the role of flux in metallurgical processes?

    Text Solution

    |

  17. How are metals used as semiconductor refined? What is the principle of...

    Text Solution

    |

  18. Write down the reactions taking place in Bast furnace related to the m...

    Text Solution

    |

  19. Give two requirements for vapour phase refining.

    Text Solution

    |

  20. Write the chemical reaction involved in the extraction of gold by cyan...

    Text Solution

    |