| abstract |
The invention provides a cast-molded sliding plate brick for slag blocking at the tap hole of a converter. The raw material is composed of: 65-78% tabular corundum, 8-12% magnesium-rich spinel, 3-7% silicon carbide, 6-10% α-alumina micropowder, 1-2% pure calcium aluminate cement, 3-6% ρ-alumina micropowder, plus 0.05-0.2% water reducing agent. During production, each raw material and water-reducing agent are weighed, stirred by a mixer to obtain mud, poured and vibrated, molded after curing for 24 hours, dried at 300±10°C, ground and coated to obtain the product of the present invention. The skateboard brick has excellent integrity, good corrosion resistance, peeling resistance and thermal shock stability, high strength and good performance. |