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Question
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as :
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as :
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Solution
The correct option is C Calcination
In the process of metallurgy, Calcination is used for the concentration of ore to oxide. It is a process of heating an ore in a limited supply of air. If the ore is heated in the presence of excess of air then its ia known as roasting. Generally carbonate ores are calcined and hence carbon dioxide is given out.
In the process of metallurgy, Calcination is used for the concentration of ore to oxide. It is a process of heating an ore in a limited supply of air. If the ore is heated in the presence of excess of air then its ia known as roasting. Generally carbonate ores are calcined and hence carbon dioxide is given out.
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