발간논문

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Vol.15, No.1, 45 ~ 52, 1977
Title
Study on Alumina Extraction from Shale Bearing Chiastolite by the Soda - Lime Sintering Process
이승이Shung Yi Lee, 정지윤Ji Yun Cheong
Abstract
An attempt has been made to extract the cell grade alumina from domestic shale bearing chiastolite, The process adopted was the soda ash sintering process with sodium carbonate and lime as additives. The effects of the shale particle size, the sintering temperature, and the amounts of the additives on the extraction of alumina have been investigated. The results are summerized as follows; (1) The optimum sintering temperature and the particle size range were found to be 1,000℃ and 150 to 200 meshes, respectively. (2) The weight ratio of Na₂CO₃as a additive to Al₂O₃, in shale 1 to 1.5 showed much better result than 1 to 1.
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