Difference between Calcination and Roasting
The difference between calcination and Roasting is tabulated below:
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Calcination |
Roasting |
|---|---|
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This is the process of converting ore into oxide by heating it strongly in absence of air. |
This is the process of converting ore into oxide by heating it at a temperature below its melting point in presence of air. |
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It is used to convert carbonates and hydroxides into their oxides. |
It is mainly carried out for sulphide ores. |
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Calcination takes place either in absence or in limited presence of air. |
Roasting takes place in presence of air. |
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The metal oxide assists the production of carbon dioxide. |
The metal oxide assists the production of sulphur dioxide. |
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In Calcination, Moisture is removed. |
In Roasting, there is no dehydration of ore. |
Difference between Calcination and Roasting
Calcination and Roasting are two processes of refining carbonate and sulfide metal ores respectively into pure metal forms. Minerals are naturally occurring chemical substances in the Earth’s crust that are obtained by mining. Metals that are known to us are derived from some of these minerals and such minerals are known as ores.
The science that deals with extracting metals from ores is known as metallurgy. There are many ways by which metals are extracted from its ore and one such process to extract crude metal from its concentrated ore is conversion to oxide which is further divided into Calcination and Roasting. In this article, we briefly discuss calcination and roasting and the difference between calcination and roasting.
Table of Content
- What is Calcination and Roasting?
- Difference between Calcination and Roasting
- Applications of Calcination and Roasting
- Calcination and Roasting – FAQs
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