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प्रश्न
How do we separate two sulphide ores by Froth Floatation Method? Explain with an example.
उत्तर
Two sulphide ores can be separated by adjusting proportion of oil to water or by using depressants. For example, in the case of an ore containing \[\ce{ZnS}\] and \[\ce{PbS}\], the depressant \[\ce{NaCN}\] is used. It forms complex with \[\ce{ZnS}\] and prevents it from coming with froth but \[\ce{PbS}\] remains with froth.
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संबंधित प्रश्न
Write the principle behind the froth floatation process. What is the role of collectors in this process?
What is the role of depressant in froth floatation process?
What is the role of depressants in the froth floatation process?
Write the principles of the following methods :
Froth floatation method
Which process is usually applied for separating gangue from sulphide ores?
In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by:
(i) using collectors.
(ii) adjusting the proportion of oil to water.
(iii) using depressant.
(iv) using froth stabilisers.
Which of the following ores are concentrated by froth floation?
(i) Haematite
(ii) Galena
(iii) Copper pyrites
(iv) Magnetite
Match items of Column I with the items of Column II and assign the correct code:
| Column I | Column II |
| (A) Sapphire | (1) \[\ce{Al2O3}\] |
| (B) Sphalerit | (2) \[\ce{NaCN}\] |
| (C) Depressan | (3) \[\ce{Co}\] |
| (D) Corundum | (4) \[\ce{ZnS}\] |
| (5) \[\ce{Fe2O3}\] |
Assertion: Sulphide ores are concentrated by Froth Flotation method.
Reason: Cresols stabilise the froth in Froth Flotation method.
The oil used as frothing agent in froth flotation process is ______.
