| The effect of heat on structural changes in kaolinite was studz'ed by measuring
density, loss in wei;ght, linear shrinkage and moisture absorption of a 95% kaolinite
clay heat:ed to dzYfenent temperatures. The r~sults show that metakaoline is formed
around 500°C, and it partia~ly retains the .1truct~re of kaolinite. With further riM
in temperature, the semblance of crystallinity is lost g11adually and a new crystanine
phase appears at about 850°C, as envisaged bv Brindley and Nakahira. |
