what are the difference between calcination and roasting
Answers
Answer:
Usually, metals are obtained from oxide ores after going through reduction or electrolysis process. While oxide ores are easy to reduce it is not the same with sulphides and carbonates. These ores can be turned to metals only after converting carbonates and sulphides to an oxide ore. So how is it done? Well, the conversion is mostly done through the processes of calcination or roasting. So, here in this page we will learn about calcination and roasting and try to understand the various topics related to them.
Answer:
Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities.
Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc.