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Does the density of light insulation brick affect the insulation effect?
Light insulation brick is divided into different materials, different body density. At present, the proportion of clay light brick will be more, if it is too high temperature insulation layer, must use suitable for different temperature insulation brick.
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Is slotted brick necessary for lining brick for rotary kiln？
For the lining of rotary kiln, each lining ring is adjusted by slotted bricks, so there will be no brick casting in the rotation process of rotary kiln, and the service cycle is longer; If there is no slotted brick, the staggered joints in construction are not well adjusted. There will be reseam, opening, release, climbing, etc. So it is best to have slotted bricks for the lining of rotary kiln.
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What is the role of refractory aggregate in refractory castables
What is the role of refractory aggregate in refractory castables
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Selection of inner lining refractory materials for different rotary kilns
Selection of inner lining refractory materials for different rotary kilns
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Refractory castable drying and baking control process
Hydration series of refractory castables, the drying process can be roughly divided into three stages. The first stage is in the temperature from room temperature to 100 degrees Celsius, generally natural drying temperature is about 40 degrees Celsius. But the fastest dehydration temperature of hydrated refractory castable is 50-60℃.
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What kind of castable is used to resist erosion and slag
What kind of castable is used to resist erosion and slag
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Effect of sodium oxide(Na2O) on properties of refractory castables
In the traditional production of refractory castable, many people pay little attention to the content of sodium oxide in alumina powder, but the content of sodium oxide in alumina has a great influence on the performance of refractory castable. The final performance of the product is for the site construction effect and use effect. Because the high content of sodium oxide will increase the amount of low melt, it will have a great influence on the dispersion of mud, and on the construction performance and setting time of refractory castable. Because the dissolution of sodium oxide into the solution will shorten the hydration time of pure aluminum calcium cement and alumina slurry, the higher the content of sodium oxide in alumina, the greater the influence of powder surface area. At the same time, the formation of hydrate, the setting time and the properties and microstructure of castable body after solidification are affected to a certain extent. The activity, integrity and surface characteristics of alumina powder will have a certain influence on the construction performance of castable, cause the construction of condensation too fast or not. The particle size distribution of alumina powder also has great influence on the...
30-05Learn More
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Types and use of dry ramming materials
Types and use of dry ramming materials
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How to judge the quality of refractory mortar
How to judge the quality of refractory mortar
09-05Learn More
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The difference between silicon brick and semi-silicon brick
Silica brick is refractory product with SiO2 content above 92%. The higher the content of SiO2 in silica raw materials, the higher the refractoriness of products, the ability of acid erosion resistance is very strong. Semi-silica brick is made of pyrophyllite as the main raw material, and its refractoriness is more than 1700℃. Good thermal shock resistance, can withstand the impact of steel slag and metal, and has a strong creep resistance. Silica brick belongs to a variety of acid refractory materials, has a strong resistance to acid slag or acid melt erosion ability, alkali erosion resistance is very poor, and the expansion coefficient of silica brick is very large. The volume of silica brick is stable between 300℃ and melting point. When heated to 1450℃, volume expansion of 1.5% ~ 2.2% will occur. The biggest disadvantage of silicon brick is poor thermal shock resistance and low refractoriness (generally 1690 ~ 1730℃), so its application scope is limited. A semi-silica brick made of waxy stone. There will be micro expansibility. Because of the mineral composition of wax stone, the lattice size of pyrophyllite in its crystal structure changes little when heated, so it shrinks when roasted, and sometimes expands slightly....
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What kind of castable is used for gasifier
What kind of castable is used for gasifier
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Advantages of Alumina Hollow Ball Brick
Advantages of Alumina Hollow Ball Brick
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