| abstract |
The invention relates to the technical field of refractory materials, in particular to a blast furnace tapping channel main channel castable which comprises the following components in parts by weight: 20-30 parts of alumina particles, 30-40 parts of brown fused alumina, 10-25 parts of silicon carbide, 5-10 parts of alumina micro powder, 1-4 parts of high alumina cement, 1-4 parts of carbon, 0-3 parts of calcium nitride fine powder, 0.1-0.5 part of dispersant, 0.1-1 part of antioxidant and 4.5-4.8 parts of water. |