PERICLASE-SPINEL REFRACTORY Russian patent published in 1999 - IPC

FIELD: refractory industry; may be used in production of periclase-spinel refractories designed for lining of rotary cement kilns and shaft lime kilns and other thermal units. SUBSTANCE: refractory contains, wt.%: periclase, 67.0-88.0; aluminomagnesium spinel, 6.0-20.0; magnesium silicate, 3.0-7.0; magnesioferrite, 0.2-3.0; boron-calcium silicate glass phase with content of B₂O₃ of 5.0-12.5 wt.%, 2.0-4.0. Presence of boron-calcium silicate glass phase ensures increasing of chemical resistance of reagents with high content of CaO (cement clinker, lime) and increases strength of adhesion with lining. EFFECT: prolonged service life of linings of cement and lime kilns. 3 tbl