Metoda spiekowo-rozpadowa J. Grzymka wytwarzania tlenku glinu i cementu z surowców krajowych

Abstract

J. GRZYMEK'S SINTER-DISINTEGRATION METHOD OF PRODUCTION OF ALUMINIUM OXIDE AND CEMENT FROM COUNTRY RAW MATERIALS Summary Development of production of aluminium oxide and hydroxide - a raw material for aluminium metallurgy and chemical industry - is very important for the national economy. Several methods of aluminium production from common non-boxite raw materials, were proposed; however, only two methods based on complex production of aluminium oxide and cement appeared acceptable. They include Soviet method of production of aluminium oxide , and cement from aluminium-bearing nepheline and J. Grzymek's sinter-disintegration method of production aluminium oxide and Portland cement. The complex method proposed by J. Grzyniek belongs to a group of basing-sinter methods of production of aluminium oxide, involving sinter aluminium-bearing ores with limestone and with addition of natrium or without, and subsequently treatment of the resulting sinters with natrium solutions. The J. Grzymek's method is described and its advantageous aspects emphasized.