Ceramics-Silikáty 26, (3) 193 - 201 (1982)

In order to reduce the amount of heat energy in the production of sintered magnesia from natural magnesites of breunerite type using the pyrohydrolysis of magnesium chloride the following modifications were proposed: a) decreasing of CaO content in the raw material by selective leaching with hydrochloric acid and subsequent pyrohydrolysis of residual CaCl₂; b) precipitation of calcium salts as CaSO₄ and reducing decomposition of residual sulphates; c) briquetting of predried Mg(OH)₂ and sintering without preceding calcination of hydroxide.