Question

Thermal systems can be sufficient for reclamation of chemically bonded sands.

(a) True

(b) False

This question was addressed to me in an online quiz.

I'm obligated to ask this question of Sand Reclamation Techniques topic in section Sand Reclamation & Control Test of Casting-Forming-Welding II

Answer 1

Correct answer is (a) True

Explanation: Chemically bonded sand uses binders to form rigid moulds by the application of heat. Reclamation of sand can be done by thermal, mechanical or wet scrubbing processes. But, thermal systems alone are sufficient for the reclamation of sands. Most of the thermal systems used are gas fired, however electrically fired thermal systems are also used widely.