18 Questions
What is the primary purpose of the concentration of ores?
To remove unwanted impurities from the ore
What is the term used to describe the removal of unwanted materials from the ore?
Dressing or benefaction
Which of the following factors is considered when selecting a method of concentration?
The type of metal, available facilities, and environmental factors
What is the term used to describe the unwanted materials present in an ore?
Gangue
What is the purpose of crushing, powdering, and grading the ore before concentration?
To make the ore more manageable
What is the principle behind the hydraulic washing method of ore concentration?
difference in gravities of ore and gangue particles
Which of the following methods is based on the difference in the magnetic properties of ore components?
Magnetic separation method
What is the first step involved in the extraction and isolation of metals from ores?
Concentration of the ore
In the hydraulic washing method, what happens to the heavier ore particles?
they are left behind
What is the purpose of the electromagnetic roller in the magnetic separation method?
to carry away the magnetic component
Which of the following methods is based on the difference in the wetting characteristics of ore and gangue?
Froth floatation method
What is the common application of the hydraulic washing method?
concentration of tin and lead ores
What is the primary function of collectors in the removal of gangue from sulphide ores?
To enhance the non-wetting ability of mineral particles in water
What is the purpose of froth stabilisers in the removal of gangue from sulphide ores?
To stabilise the froth
Why is leaching used in metallurgical processes?
To separate soluble constituents of a mixture
What is the purpose of adjusting the proportion of oil to water in the removal of gangue from sulphide ores?
To separate sulphide ores of different metals
What is the result of the agitation of the mixture in the removal of gangue from sulphide ores?
Froth formation and carrying of mineral particles to the top
What is the purpose of depressants in the removal of gangue from sulphide ores?
To separate sulphide ores of different metals
Learn about the process of extracting metals from ores, including concentration, isolation, and purification. Understand the concept of gangue and how it affects metal extraction.
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