Question

What is metallurgy? Differentiate between calcination and roasting.​

Answer 1

Answer:

When we talk about roasting, it is basically a process of metallurgy where ore is converted into its oxide by heating it above its melting point in the presence of excess air. While calcination is mostly used in the oxidation of carbonates, roasting is a method that is used for converting sulphide ores.

Answer 2

Answer:

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Explanation:

Metallurgy is defined as a process that is used for the extraction of metals in their pure form.

Roasting involves heating of ore lower than its melting point in the presence of air or oxygen. Calcination involves thermal decomposition of carbonate ores. ... During calcination, moisture is driven out from an ore. Roasting does not involve dehydrating an ore.