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The abrasive particles for sandblasting halving improved abrasive strength, were manufd. by coating thermoset resin such as phenol, urea, melamine, polyester and alkyd to the basic particles such as sand and slag. Thus, sand, thermosets and curing agent were mixed in agitating tank(3) and dried with how air(4). The polymer-coated sand particles were cured in rotary kiln(7) followed by screening in classifier(23).
KR7702171A1977-09-151977-09-15Materials for grinding and cleaning
KR800001577B1
(en)