Please give the information regarding difference between Metakaolin and calcine clay in terms of manufacturing process, fineness, temperature effect, application.
Metakaolin is a partially thermally dehydroxylated kaolinite, ie a clay with a significant predominance of kaolinite. The dehydroxylation temperature depends on the crystallinity of the kaolinite and is in the range of 530-630oC. For common clay, it is not clear without analysis what clay mineral it contains. There are some differences in the calcination behavior of montmorillonite, illite, chlorite and other clay minerals.