(a)write two ores of Aluminum. (b) Define calcination
Answers
Answer:
a) Bauxite ore is the main source of aluminum and contains the aluminum minerals gibbsite, boehmite, and diaspore.
b) 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.
Explanation:
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Answer:
(a) Ores of aluminium are: Bauxite, Cryolite and Corundum. Bauxite is hydrated aluminium oxide having the formula Al2O3.
(b) Calcination- process of heating some solid material or a substance in a controlled environment. Usually in the process, the temperature is also regulated. Calcination is done to bring about some change in the substance physical or chemical constitution.