Basic monolithic refractories

Details Basic monolithic refractories Basic monolithic refractories

1991-11-21

1993-04-20

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501104, 501121, 501122, C04B 3504

Patent

active

052042987

ABSTRACT:
Basic monolithic refractories of which the chemical composition consists essentially of, in oxide equivalence, 65%-96% by weight of MgO, 2.6%-20% by weight of ZrO.sub.2, 1.3-10% by weight of SiO.sub.2, 2% or less by weight of CaO, 0.5% or less by weight of Fe.sub.2 O.sub.3 and 1% or less by weight of Al.sub.2 O.sub.3, and with a mineral composition containing periclase as the main component and cubic zirconia and forsterite as sub-components, and with apparent porosity of 7% or less and bulk density of 3.2 g/cm.sup.3 or more.
Basic monolithic refractories under this invention possess excellent slaking resistance, slag erosion resistance, slag penetration resistance and spalling resistance. They exhibit an excellent service life, especially as lining material for steel-making furnaces.

REFERENCES:
patent: 4010039 (1977-03-01), de Aza et al.
patent: 4126478 (1978-11-01), Bowman
patent: 4696455 (1987-09-01), Johnson
patent: 4721691 (1988-01-01), Kawano

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