What do you understand by the term "concentration of ore" ? Name three processes used for the concentration of ores and name one specific ore which can be concentrated by the named process.
Answers
Answer:
Ores are solid material from which a pure metal can be obtained. The process of removal of unwanted material from the ore is known as concentration or dressing or benefaction of ores. It involves several steps. The separation of required material from the ore is dependent on the differences in physical properties of the compound of the metal present and that of the gangue.
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Explanation:
The concentration of ores is the process of removing gangue from the ore. It is also known as dressing or benefaction of ores. In this process, first ores are crushed and ground, and then gauge or matrix is removed from the powdered ore. Ores of highly, moderately, and low reactive metals are first concentrated before use. This is a common step for ores of all types of metals. It is carried out by various methods depending upon the nature of the ore. It is generally carried out by following four methods –
• Hydraulic Washing (or Gravity separation)
• Magnetic Separation
• Froth floatation method
• Leaching method