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Question
Which one of the following is not a method of concentration of ore?
Which one of the following is not a method of concentration of ore?
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Solution
The correct option is B Smelting
a. Electromagnetic separation is generally used to concentrate ore by separating out the particles of non magnetic minerals.
b. In smelting the concentrated ores are heated and reduced by using some reducing agent to decompose the ore and driving off other elements as gases and slag, leaving behind the metal only.
c. Gravity separation is also a method to concentrate ores which is based on the difference in the specific gravity of the various impurities present in the ore.
d. Froth floatation process is also a method to concentrate the ores by separating the hydrophobic materials from the hydrophilic ones.
a. Electromagnetic separation is generally used to concentrate ore by separating out the particles of non magnetic minerals.
b. In smelting the concentrated ores are heated and reduced by using some reducing agent to decompose the ore and driving off other elements as gases and slag, leaving behind the metal only.
c. Gravity separation is also a method to concentrate ores which is based on the difference in the specific gravity of the various impurities present in the ore.
d. Froth floatation process is also a method to concentrate the ores by separating the hydrophobic materials from the hydrophilic ones.
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