Wanyu tabular corundum Mohs hardness 9.0 fused alumina Acid and alkali corrosion resistance
Tabular corundum
Tabular corundum is a pure, sintered corundum that does not add any additives such as MgO, B2O3 and so on. It is completely sintered and shrunk. It has a coarse, well-developed α-Al2O3 crystal structure, and the content of Al2O3 is more than 99%. Plate-like crystal structure, with small pores and many closed pores. The porosity is roughly the same as that of fused corundum.
| equipment | Application site | Variety of materials used | performance |
| blast furnace | Furnace lining, hot blast stove, pouring yard (main ditch, tapping ditch) | Aluminum-chrome bricks, high-alumina bricks, high-aluminum castables, high-aluminum plastics, aluminum silicon carbide and carbon castables | Good thermal shock resistance, alkali slag corrosion resistance, high temperature strength |
| Hybrid car | Working lining (slag wire brick, iron wire brick, top turn), aluminum carbon fire clay | Aluminum silicon carbide carbon brick, aluminum magnesia carbon brick, aluminum carbon brick, aluminum silicon carbide carbon refractory clay | Good slag erosion resistance, good hot metal erosion resistance |
| Ladle | Working lining, breathable brick, nozzle block brick | Aluminum silicon carbide carbon bricks, aluminum-magnesium prefabricated parts, aluminum-spinel prefabricated parts, magnesia-aluminum non-fired bricks, aluminum-magnesium non-fired bricks, aluminum-spinel fired products | Good thermal shock resistance, good slag resistance, corrosion resistance of molten steel, good air permeability |
| Tundish | Back-up work lining, cover | Low cement castable, high aluminum prefabricated brick | Stable volume |
| RH | Dip tube, circulation tube | Corundum spinel castables, preforms | Good thermal shock resistance, good slag resistance |
| Nozzle | Long nozzle, immersion nozzle | Aluminum carbon nozzle, aluminum carbon slide plate, etc. | Good thermal shock resistance and corrosion resistance of molten steel |
| Sliding nozzle | Nozzle, skateboard | Aluminum carbon nozzle, corundum spinel pouring nozzle, aluminum carbon slide plate, etc. | Good thermal shock resistance, good erosion resistance |
| Heating furnace | Working lining | High-aluminum plastics, castables, prefabricated blocks | Stable volume and good heat preservation effect |
It has high purity, good volume stability, and minimal re-fire shrinkage. It is used to produce refractory materials or castables after high temperature treatment It has good thermal shock stability and bending strength, but the price is higher than other aluminas.
performance
High refractoriness; high corrosion resistance; high erosion resistance; high thermal shock resistance; high strength and good toughness; stable chemical properties
Tabular corundum can be used as the main component in aluminum-carbon, aluminum-magnesium-carbon, magnesia-aluminum-carbon, magnesia spinel, and aluminum-chromium refractory bricks, or it can be introduced into high-alumina refractory bricks as a component of enriched alumina. Shaped refractories can be widely used in steel, casting, ceramics and other industries, and the application in the steel industry almost covers the entire process of ironmaking and steelmaking. The application status of refractory materials made of tabular corundum in the iron and steel industry is listed in
As an ultra-high temperature refractory material, tabular corundum has high purity, low alkali, high density, high strength, high thermal conductivity, high shock resistance, corrosion resistance, high insulation, etc. It is mainly used as advanced refractory aggregates and powders , Used in shaped and unshaped materials, as long as capacitor white corundum, sub-white corundum, brown corundum are used, they can be replaced by plate corundum, and the product performance is significantly improved. Mainly used in: metallurgy, chemical industry, electronics, ceramics, high-temperature furnaces, abrasives and other industries. Fused corundum is a high energy consumption and high pollution industry. As the country increases its efforts to control the environment and high energy consumption, fused corundum is gradually talking about the market
Chiping Wanyu Industry and Trade Co., Ltd., established in 2010, specializes in the production of wear-resistant and refractory products: white corundum section sand, fine powder, and granular sand series products.
Wear-resistant series specifications: 8-5#, 5-3#, 3-1#, 3-6#, 1-0#, 100-0#, 200-0#, 325-0#
Granular sand specifications: 20#, 24#, 36#, 40#, 46#, 54#, 60#, 80#, 100#, 150#, 180#, 200#, 220#, 240#,
Application status of tabular corundum refractories in iron and steel industry
