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Which of the following ores is not concentrated by froth floatation process?
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Froth floatation method is commonly used for the concentration of the low-grade sulphide ore. The principal is based on the fact that gangue and ore particles have a different degree of wettability with water and pine oil. The ore particles are wetted by oil whereas gangue particles are wetted by water.
Copper pyrite is a sulphide ore (). Pentlandite is an iron-nickel sulphide ore and zinc blende () is also a sulphide ore hence it is concentrated by froth floatation process. While Pyrolusite is an oxide ore () and cannot be concentrated by this process.
Hence, (C) is the correct option.
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| Question Text | Which of the following ores is not concentrated by froth floatation process? |
| Answer Type | Text solution:1 |
| Upvotes | 150 |
