▎ 摘　　要

NOVELTY - Silicon carbide brick comprises 24-41 wt.% silica, 10-20 wt.% coarse silica powder, 10-30 wt.% fine silica powder, 19-23 wt.% graphene, 1-3 wt.% composite mineralization agent, 2-5 wt.% binder, 1-3 wt.% nanochromium oxide, and 2-5 wt.% nano titanium dioxide. USE - Silicon carbide brick. ADVANTAGE - The silicon carbide brick has good volume stability, and has reduced stress generation during firing thus preventing loosening and cracking. It has excellent strength, good mechanical properties, and has enhanced anti-acid corrosion property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of silicon carbide brick by weighing components according to proportion; mixing; vibration molding into brick; baking brick at 550-650 degrees C for20-25 hours; putting baked brick into tank for vacuum impregnation under 0.05-0.08 MPa; packing for 40-50 minutes; adding impregnating agent; continue packing for 3-5 hours; and firing impregnated brick at 1200-1285 degrees C for 75-85 hours.