MINERAL PELLETISATION

摘要

The present invention is directed to a process of making fired mineral pellets by mixing particulate mineral material with moisture and binder comprising substantially water soluble organic polymer to form a moist pelletisable mix, pelletising the moist mix by a tumbling process to form green pellets and firing the green pellets, characterised in that the binder comprises alkali metal silicate in a dry weight amount which is either (a) above 0.13 % based on moist mix or (b) above 0.08 % based on moist mix and at least three times the dry weight of substantially water soluble organic polymer.