Introduction to the performance of breathable bricks

Breathable brick is a new product with long lifespan, energy saving and consumption reduction, with reasonable structural design, good thermal stability, erosion resistance, erosion resistance, and permeability resistance, high blow-through rate, safe and reliable operation, and long service life Features.

Slag resistance

Ukuze uthuthukise ukumelana kwempahla ye-slag nokumelana nokungena kwensimbi okungamanzi, i-Cr2O3 noma ingxenye ye-chromium corundum ivame ukungezwa kwizitini ezivumeleka emoyeni ezingena ngaphakathi. I-Cr2O3 ne-a-Al2O3 zinesakhiwo esifanayo se-crystal. I-Cr2O3 ayigcini nje ngokuthuthukisa ukumelana kwempahla, kepha futhi inyusa ne-wetting angle phakathi kwento nensimbi encibilikisiwe, futhi ithuthukisa kakhulu ukuvinjelwa kwama-pores esitini esiphefumula ngenxa yokungena kwensimbi encibilikisiwe.

Using Cr2O3 fine powder and Al2O3 at high temperature to form a solid solution of aluminum and chromium and an independent chromium-containing glass phase, the liquid phase formed when it comes into contact with the slag in the molten steel smelting process has a certain viscosity, thereby preventing the slag in the molten steel from affecting the air-permeable brick Corrosion; At the same time, it can absorb iron oxide and magnesium oxide in the slag, and form dense spinel in the working layer of the ventilating brick, which improves the slag resistance of the ventilating brick.

Kodwa-ke, ngemuva kokungeza i-Cr2O3 kulokho okusetshenzisiwe, ngemuva kokudubula noma ukusetshenziswa okushisa okuphezulu, i-Cr3 + ixhunywe ku-Cr6 +, enobuthi futhi ingcolisa imvelo. Ngakho-ke, ngokulondolozwa kwamandla nokuvikelwa kwemvelo, ukusetshenziswa kweCr2O3 kufanele kugwenywe ngangokunokwenzeka, futhi ngokufaka izinto ezingavuthiwe, ukusebenza kokushisa okuphezulu ngaphandle kokungeza i-Cr2O3 kungafinyelela ezingeni lokungeza i-Cr2O3.

Ukumelana nokushisa kwama-thermal

The main damage method of air-permeable bricks is thermal shock damage. With the continuous increase of the tapping temperature, there is a large temperature difference between working and intermittent work on the working surface of the ventilating brick, which requires the material to have extremely high thermal shock resistance. The spinel phase is introduced into the castable, and the thermal shock resistance of the air-permeable brick will be improved.

I-oxide noma i-non-oxide engezwe esitinini esinomoya ongena umoya yakha isigaba sesisombululo esiqinile ngesilinganiso ekushiseni okuphezulu, inyusa amandla okushisa aphezulu esitini, ithuthukise ukungena kwesitini, futhi imelana nokuguguleka kwesitini esinomoya i-slag encibilikisiwe ku-ladle. Ngemuva kokwelashwa kokushisa okuphezulu kwesitini esingena emoyeni, ukusebenza kwaso kuyathuthukiswa ukuhlangabezana nezidingo zokusetshenziswa kwaso.