process for rapid calcination of kaolin
Effect of the rate of calcination of kaolin on the . Kaolin samples of the same mass were treated at 700 °C for the same duration of 30 min by varying the rate of calcination (1, 2.5, 5, 10, 15 and 20 °C/min) in order to obtain metakaolins which were used to produce geopolymers.Depending on the nature of each type of material, kaolin, metakaolins and geopolymers were characterized using ...