特殊アルミナセメントの研究 (第2報) アルミ殘灰使用のアルミナセメント燒成法

概要

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Alumina cement is commonly produced by melting in an electric furnace from raw mixture of bauxite and lime. But, in the present paper, the special manufacturing method was devised and fully discussed. The new method is the sintering to clinker, without melting. The proper mixture of aluminous raw material and lime or limestone was ground, kneaded with water, moulded to briquette, dried and sintered to clinker by the single or tunnel kiln as in the potte ry or refractory industry. This method is especially suited for the making of alumina cement from alumina (residual) ash from aluminium remelting or reclaiming factory and slaked lime. Some samples of the special alumina cement produced by this method, were tested and proved to be of good quality. It is now further being studied to compare this special sintering method to the common electric melting one, by using the same raw materials, e.g., aluminous shale or almina (residual) ash and lime, which result will be reported in the next report.
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