Intermediate canister (intermediate bag) it is the crucial equipment in steely smelt process, basically install the molten steel that pours out of from steel-making furnace with Yu Cheng, control molten steel to flow into the speed of casting machine and quality. The fireproof data that uses inside inter canister must have good adiabatic performance, heatproof shake gender and be able to bear or endure aggressivity. It is the heat insulation with intermediate commonly used canister below board fireproof material:
1.Tall aluminium is adiabatic board composition: Main by alumina (Al₂O₃ ) and a few argillaceous bond composition. Characteristic: Have tall fireproof degree, good heatproof shake sex and mechanical intensity, be able to bear or endure chemical aggressivity can be admirable. Application: Use at the working layer of intermediate canister and Yongjiu layer, can effective heat insolation protects liner data.
2.Light qualitative Molaishi composition of heat insulation board: Make by the alumina of tall purity and synthesis of silica course high temperature, contain photographs of a large number of Mo Laishi brilliant. Characteristic: Have sex of low thermal conductivity, tall heatproof shake and corrosion resistance, weight is light, construction is convenient. Application: Use at the adiabatic layer of intermediate canister and working layer, apply to the adiabatic protection below high temperature environment.
3.Composition of siliceous calcareous plate: Basically make by siliceous calcium, contain a few enhance fiber. Characteristic: Have good adiabatic performance, inferior coefficient of thermal conductivity and good mechanical strength, weight is light, easily cut and installation. Application: Use at the adiabatic layer of intermediate canister, can reduce hot loss effectively, improve thermal efficiency.
4.Light qualitative clay is adiabatic board composition: Make by the light qualitative raw material such as clay, grog and sawdust. Characteristic: Have good heat insulation function, fireproof sex of degree of tall, heatproof shake is good, the price is relatively low. Application: Apply to the adiabatic layer of intermediate canister and working layer, provide favorable adiabatic result.
5.Composition of beaverboard of pottery and porcelain: Make by the alumina silicate fiber of tall purity, contain a few bond. Characteristic: Have sex of superior adiabatic performance, low thermal conductivity, heatproof shake strong, weight is light, easily construction. Application: Use at the adiabatic layer of intermediate canister, protect to the heat insolation of high temperature area especially.
Construction and maintain construction quality: Ensure fireproof heat insulation board construction quality, the material function that because construction is undeserved,avoids to bring about drops. Regular examination: Inspect the fireproof material condition of intermediate canister regularly, be repaired in time or change attaint place, ensure of equipment move normally. Reasonable warm-up: New setup or fireproof material should have the intermediate pot after repairing reasonable warm-up, the flaw that because temperature changes suddenly,prevents to bring about and attaint.
Through choosing appropriate heat insulation board fireproof material, construction of strict control and safeguard, can improve the service life of the canister intermediate and work efficiency significantly, satisfy the requirement in steely smelt process.
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