Patents Assigned to Magnesital-Feuerfest GmbH
  • Unburnt refractory masses or bricks for metallurgical vessels based on chrome-ore and carbon-containing binder
    Patent number: 4115133
    Abstract: An unburnt refractory mass, which can be in the form of a brick, for use in vessels employed in metallurgical refining consisting essentially of chromium-ore, sintered magnesia and a carbon-containing binder, said mass consisting essentially of:75 to 95% by weight chromium ore having a Cr.sub.2 O.sub.3 content of at least 30% by weight;0 to 19% sintered magnesia poor in iron content; and2 to 7% hard pitch combined with 1.5 to 5% carbon so as to provide an overall residual carbon of 3 to 6%.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: September 19, 1978
    Assignee: Magnesital-Feuerfest GmbH
    Inventors: Rudolf Kunkele, Hans-Peter Engelhardt
  • Fireproof stamping mass for tap spouts and flues in blast furnaces
    Patent number: 4017316
    Abstract: Fireproof stamping mass containing pyrophillite, silicon carbide, plastic clay, quarzite, a carbonaceous bonding agent and water.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: April 12, 1977
    Assignee: Magnesital-Feuerfest GmbH
    Inventors: Albert Lajos Renkey, Hans-Peter Engelhardt