Dolomitwerke Gmbh

Rainer Prange

Alfred Roeder

Max Chmiel

Herbert Richrath

Heinzjosef Poggenpohl

Thomas Hammer

Joachim Fleischer

Bernd Wyskott

Kurt Moller

Method for the production of sintered dolomite, wherein at least carbonate material is ground into particles, formed into a predetermined shape, such as briquettes, deacidified and then heated to a predetermined temperature.

Method of thermal treatment of mineral raw material

A refractory composition for use, preferably as a lining of a metallurgical vessel is disclosed. The refractory composition includes sintered oxide granulations, based on magnesium oxide, dolomite, calcium oxide or a combination thereof, an organic binder having a mixture containing carbomethoxy-substituted oligophenyls, carbomethoxy-substituted benzyl esters or a combination thereof, and 0 to 20 parts by weight of a fine particulate carbon carrier per 100 parts by weight sintered oxide. A process for the production of a pressed body employing the refractory composition of the invention is also disclosed.

Refractory composition for refractory linings of metallurgical vessels

Basic fire resistant material comprised of burned or calcined sintered dolomite and organic binding means having plastic properties which can be densified at low pressures, whose shaped bodies have intermediate and final strengths in a temperature range between 300.degree. and 1600.degree. C. in which, related to the fire resistant basic materials, the proportion of binding means is 3 to 8% by weight wherein 0.1 to 2% by weight are silicon-organic compounds, and the fire resistant basic materials are from 10 to 15% by weight of particles having a particle size smaller than 45 .mu.m.

Basic fire resistant material and shaped bodies therefrom

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Hagen, Germany

Rainer Prange