C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/28
C04B 9/00 (2006.01) C04B 35/043 (2006.01)
Patent
CA 1069944
ABSTRACT A fired refractory brick composed of magnesia, 2 to 10% alumina, calcium oxide and up to 1.5% silica, the weight ratio of calcium oxide to silica being more than 1.4, and at least 2.2 (CaO - 1.4 SiO2) % zirconia, calcium and zirconium forming a cal- cium zirconate phase in the brick and the content of the calcium zirconate phase being from 0.5 to 8%, all percentages being by weight. This brick is prepared from a mixture of the components by pressing the mixture into the shape of a brick and firing the brick at a temperature of 1600°C to 1800°C until the brick contains the indicated amount of the calcium zirconate phase.
262706
Gulas Hans-Jurgen
Neuper Helmut
Na
Veitscher Magnesitwerke-Actien-Gesellschaft
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