Study on Preparation of Ceramsite by Kyanite Tailings

In view of the traditional ceramsite using a large number of high-quality natural clay and shale, the destruction of the environment problem, ceramsite was prepared by kyanite tailings in Hebei, The results show that when the kyanite tailings and clay was in the ratio of 7: 3, the preheating temperature was 500°C, preheating time was 15min, calcination temperature was 1100°C, heat preservation time was 15min, the apparent density of ceramsite is 816kg/m3, the particle strength of 851N.