Calcination and Roasting

Explain the following terms : (a) Metallurgy (b) Flux (c ) Calcination (d) Roasting

Give definitions of following along with examples. (a) Calcination (b) Roasting

Difference between calcination & roasting

Discuss the process of conversion of Ores into oxides by (1) calcination and(2) roasting

Write short notes on : roasting, calcination and smelting.

Write short notes on: roasting, calcination and smelting

Extraction OF Crude Metal from Concentrated Ore|| Conversion OF Concentrated Ore into Oxide|| Calcination|| Roasting||Melting|| Slag Formation|| Properties OF Slag||Flux and their types

Which of the following statements are wrong? i) Calcination is mainly used for carbonate ore to get its oxide ii) Hydrated ore and hydroxides become anhydrous by calcination iii) Impurities like S, As and Sb are removed in the form of elemental vapours by calcination iv) Roasting is an endothermic process v) Roasting is mainly applicable for sulphide ore to get its oxide vi) Some times as a result of roasting, higher oxidation state oxide gets converted into lower oxidation state oxide.

(a) What is calcination ? (b) What is roasting?