Discussion :: Building Materials - Section 4 (Q.No.39)
|Ashley said: (Nov 1, 2016)|
|Calcination in absence of air!
So, the answer is wrong here!
|Apcivilian said: (Dec 25, 2017)|
|Calcination is in absence of air how the 1st option is right Here?|
|Anshul Thakur said: (Aug 24, 2018)|
|The IUPAC defines calcination as " heating to high temperatures in air or oxygen".
However, calcination is also used to mean a thermal treatment process in the absence or limited supply of air or oxygen applied to ores and other solid materials to bring about a thermal decomposition. A calciner is a steel cylinder that rotates inside a heated furnace and performs indirect high-temperature processing (550"1150 °C, or 1000"2100 °F) within a controlled atmosphere.
|Viki said: (Oct 8, 2019)|
|@Apcivilian Calcination can involve limited supply of air.|
|Faraaz said: (Oct 13, 2020)|
|Property of lime by which it sets or hardens in damp places having no free circulation of air is called hydraulicity of lime.|
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