The reaction is descrihcd in detail and the results are presented 97102511 Identification of coal characteristics indicating problems of swelling during carbonization Edwards, 1. et rrl. &mm. Eur. Communities, /Rep./ EUR , 1997, (EUR 171.5(l), pp. 189. Some coals generate a very high internal pressu
Hydrothermal Reaction of Ca(OH) 2 with Quartz in Connection with Coal Demineralization
β Scribed by Wang, Jie; Tomita, Akira
- Book ID
- 125974737
- Publisher
- American Chemical Society
- Year
- 1997
- Tongue
- English
- Weight
- 128 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0888-5885
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Reactivity has been studied of SiO 2 fume from ferrosilicon production with Ca(OH) 2 in suspension, with stirring, under hydrothermal conditions at 190Β°C and 200Β°C from 1 to 12 hours. Reaction product after a 4-hour synthesis at 200Β°C is calcium silicate hydrate xonotlite C6S6 H\*, with some C-S-H(1
The reaction between calcium hydroxide and minerals containing alumina forms C~A-hydrates and/or hydrogarnet (calcium-alumina-silicate hydrate), depending on the temperature. Alkali-feldspars furnish alkalies during the reaction. C4A-hydrates react with calcium sulphate to produce ettringite. La