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Why is the froth flotation method select...

Why is the froth flotation method selected for the concentration of sulfide ores?

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Metal sulfides are preferrentially wetted by oils and not by water whereas impurities are wetted by water.
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ICSE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) (VERY SHORT ANSWER QUESTIONS)
  1. How is galena (PbS) present as impurity removed from the ore of zinc b...

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  2. Write a balanced equation for the reaction of argentite with KCN and n...

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  3. In moist air, copper corrodes to produce a green layer on the surface....

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  4. In which of the following cases flux is required? (i) In the smelti...

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  5. What is anode mud" in connection with the metallurgy of copper? What i...

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  6. What is the percentage of silver in German silver'?

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  7. Arrange in descending order of carbon content: Stainless steel, mild s...

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  8. Name a metal which may be extracted from the respective ore by both el...

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  9. What is the composition of Copper matte.

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  10. What is meant by self-reduction process?

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  11. An ore sample of galena (PbS) is contaminated with zinc blende (ZnS). ...

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  12. The extraction of Au by leaching with NaCN involves both oxidation and...

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  13. Why is the froth flotation method selected for the concentration of su...

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  14. What is meant by the term pyrometallurgy?

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  15. At a site, low grade copper ores are available and zinc and iron scrap...

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  16. Why is electrolytic reduction preferred over chemical reduction for th...

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  17. Copper matte is charged into a silica lined converter in extraction of...

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  18. What is the role of collectors in froth floatation process ?

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  19. On what principle is chromatography based ?

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  20. What is the role of cryolite in the extraction of pure aluminium from ...

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