Question

A vigorous scrubbing action takes place in the method of wet reclamation of sand.

(a) True

(b) False

This question was posed to me in class test.

Question is taken from Sand Reclamation Techniques in portion Sand Reclamation & Control Test of Casting-Forming-Welding II

Answer 1

Right answer is (a) True

The explanation is: In wet reclamation, a scrubbing action takes place in water to dissolve binders from the sand mass. Loose clay gets suspended in the water and scrubbing action removes the clay coatings from the sand grains. Wet reclamation treats clay bonded sands very efficiently and the reclaimed sand mass is almost equal in quality and purity to new sand.