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Question
Which one of the following processes makes the ore porous?
Which one of the following processes makes the ore porous?
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Solution
The correct option is B Calcination
Calcination is a process in which concentrated ore is heated in a suitable furnace, generally much below its melting point in the limited supply of air or oxygen, which makes the ore porous and hydrated salts lose their water of crystallization. During which impurities of Sulphur and arsenic are volatilized away as oxides and thus pores are formed in ores.
In general, the output of smelting is in the molten state.
Calcination
Calcination is a process in which concentrated ore is heated in a suitable furnace, generally much below its melting point in the limited supply of air or oxygen, which makes the ore porous and hydrated salts lose their water of crystallization. During which impurities of Sulphur and arsenic are volatilized away as oxides and thus pores are formed in ores.
In general, the output of smelting is in the molten state.
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