Q:How to judge the quality of brick, clay brick, high alumina brick furnace from the appearance?

Mainly depends on the color and density of brick. Another black clay brick and brick with iron oxide formation and how much the size of bricks

Q:The chemical composition of silica brick and its physicochemical index?

????Al2O3 SiO2??????fe2o3??????cao???????r2o93～98?0.5～2.5?；；?0.3～2.5??0.2～2.7；??1～1.5；

Q:What are the main constituents of refractory bricks?

Clay brick and clay brick are mainly composed of mullite (25% ~ 50%), glass phase (25% ~ 60%) and square quartz and quartz (up to 30%). Usually with hard clay as raw material, pre calcined mature material, and then with soft clay, semi dry or plastic molding, the temperature at 1300~1400 C fired clay brick products. Can also be added a small amount of water, glass, cement and other binders to make non burning products and amorphous materials. It is a refractory brick commonly used in blast furnaces, hot blast furnaces, heating furnaces, power boilers, lime kilns, rotary kilns, ceramics and refractory bricks.

Q:The formula in the refractory brick, and firing curve, who knows?

Iron scale powder 0.45-0.55%, cement 0.9-1.1%, lime milk 6.5-7.5%, pulp 1.95-2.2%, the silica powder, perlite will be added to the wet mill in proportion, and then add iron scale powder, cement, dry roller 1-2 minutes later

Q:Why is the highest brick coke oven temperature measuring point temperature not exceeding 1450

That is because the brick load softening point the maximum temperature is 1450 degrees.

Q:Semisilica brick interpretation

High temperature volume stability. Volume change is small.

Q:Why is the three oxidation of two silicon is very harmful impurities in silica brick

Heating calcination is the best way to extend this sort of impurity removal. Remove impurities

Q:Semisilica brick, clay brick, high alumina brick and what is the difference?

The share of A12O3 and SiO2 is different

Q:The specific content is what gb/t2608-2012 brick

The provisions of the brick classification, technical requirements, test methods,

Q:What role does silica play in refractories?

The natural mineral of silica is called quartz. In refractories, silica and siliceous refractory materials contain more silica. Silica is acidic at high temperature, and siliceous refractory can resist acid slag corrosion