01 Solid fuels (preparation) fluidized bed coal feeder is capable of a coal feed rate from 20-90 g/h. The facility is also capable of using various atmospheres from inert to oxidizing and reducing. The preliminary results from devoiatilization of Yallourn coal at various pressures and temperatures are presented in this paper. 97104402 Effect of Ca(OH)2/HCI leaching on kaolinite removal during coal demineralization Wang, J. and Tomita. A. DGMK Tugun&er.. 1997, 9702, (Proceedings ICCS '97. Volume I). 519-522. Levels of up to 91% and 81% ash removal for HV coal and EZ coal, respectively, can be attained using the Ca(OH)? digestion/HCl leaching method. Kaolinite was a major mineral species present in these coals. To clarify how kaolinite was removed upon the demineralization, the chemical reagent kaolinite was used to study hydrothermal reaction between kaolinite and Ca(OH)?. The results showed that kaolinite could react with Ca(OH): to form various products. depending on the CaOikaolinite ratio. The conversion of kaolinite was complete after 2 h of treatment with CaOi kaolinite ratios of 0.2-1.2 g/g at 300'. All of the reaction products were entirely extractable by dilute hydrochloric acid. 97104403