Question

What is roasting and calcination ?

Answer 1

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$\Large\fbox{\color{purple}{QUESTION}}$

WHAT IS ROASTING AND CALCINATION?

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★ ROASTING ★

ROASTING IS A PROCESS IN METALLURGY WHERE THERE IS A CONVERSION OF ORES ( METAL COMPOUNDS ) TO THIER OXIDES FOR REDUCTION OF METALS IN PRESENCE OF OXYGEN

FOR EXAMPLE :-

2ZnS + 3O2 --------→ 2ZnO + 2So2

★ CALCINATION ★

CALCINATION IS A PROCESS IN METALLURGY WHERE THERE IS A CONVERSION OF ORES ( METAL COMPOUNDS ) TO THIER OXIDES FOR REDUCTION OF METALS IN ABSENCE OF OXYGEN

FOR EXAMPLE :-

ZnCO3 --------→ ZnO + CO2

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Answer 2

Roasting is a process of heating a sulfide ore to a high temperature in presence of air. It is a step of the processing of certain ores. More specifically, roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component.

Calcination, the heating of solids to a high temperature for the purpose of removing volatile substances, oxidizing a portion of mass, or rendering them friable. Calcination, therefore, is sometimes considered a process of purification. Calcination. Heat-treating. Roasting.

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