Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 4 (Q.No. 39)
39.
Pick up the correct statement from the following:
Discussion:
5 comments Page 1 of 1.
Faraaz said:
5 years ago
Property of lime by which it sets or hardens in damp places having no free circulation of air is called hydraulicity of lime.
(1)
Viki said:
6 years ago
@Apcivilian Calcination can involve limited supply of air.
Anshul Thakur said:
7 years ago
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.
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.
Apcivilian said:
8 years ago
Calcination is in absence of air how the 1st option is right Here?
(1)
Ashley said:
9 years ago
Calcination in absence of air!
So, the answer is wrong here!
So, the answer is wrong here!
(1)
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