ROASTINGLESS REFRACTORY MATERIAL Russian patent published in 1994 - IPC

FIELD: refractory industry. SUBSTANCE: proposed refractory material has, wt. -%: tricalcium silicate 35-60; dicalcium silicate 25-35; tetracalcium alumoferrite 3-6; periclase 10-20, and magnesian spinellide of the general formula (Mg,Fe)O·(Al,Fe)₂O₃ 2-4. The novel combination of roastingless refractory materials provides the following indices: temperature 4% deformation under loading 0,2H/mm² is 1510-1630 C, compression limit strength after drying is 73,7-98,7H/mm², after 800 C is 45,4-58,3H/mm², after 1400 C is 51,6-67,3H/mm², thermal stability (1300 C - water) is 3-3.5 heat-changes, shrinkage after 1400 C is 0.2-0.5% . Maximal utilization temperature is 1600-1700 C. EFFECT: enhanced quality of refractory material. 3 tbl