Dolomitwerke Gmbh

Karl H Zepter

Alfred Roeder

Max Chmiel

Dieter Opitz

In a method of manufacturing sintered dolomite having raw densities exceeding about 3.0 grams per cubic centimeter in a shaft kiln from ground raw dolomite briquetted or pelletized into shaped bodies, the steps include deacidifying and heating the shaped bodies to a temperature of at least 1000.degree. C. in an upper region of the shaft kiln in a preheating and deacidifying zone heated with fuels of a low thermal content, thereafter sintering the shaped bodies in a lower sintering zone heated with fuels of high thermal content, so as to heat the shaped bodies to a temperature of about 1600.degree. C. to about 2000.degree. C., and subsequently passing the sintered bodies into a lower cooling zone, cooling the bodies therein, and, thereafter, discharging the sintered bodies from the shaft kiln.

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Mettmann, Germany

Karl H Zepter