Research in the Field of Preparing Molded and Unmolded Refractories Based on High-Alumina HCBS. Part 11. Composite Composition HCBS (Fuzed Corundum-Bauxite, Sintered Bauxite, Quartz Glass) and Some Properties of Materials Based Upon Them(1)

摘要

HCBS of composite composition are prepared by combined wet grinding using fuzed corundum-bauxite containing 93.4% Al2O3 (45%) and sintered Chinese bauxite (45%) as basic materials. The additional component within the composition of the milling charge is very fine quartz glass (10%). The effect of firing temperature in the range 900 - 1600A degrees C on material sintering and mullitization is studied. Values of ultimate strength in bending of 150 MPa are achieved after firing specimens at 1200A degrees C. The material sintering (shrinkage) and mullitization temperature ranges are established.