Magnesia brick is widely used in steelmaking furnace lining, ferroalloy furnace, mixed iron furnace, non-ferrous metallurgical industry furnace, building material lime kiln, glass industry regenerative room lattice body because of high temperature performance and strong anti-alkali slag ability. Heat exchanger, refractory industry, high-temperature calcining kiln and tunnel kiln. The refractoriness of magnesia brick is as high as above 2000 ℃, and the softening temperature of the load varies with the melting point of the combined phase and the liquid phase produced at high temperature. General magnesia brick load softening start temperature in the 1520 ~ 1600 ℃, while the high-purity magnesium boast a heavy softening temperature of up to 1800 ℃.
Magnesia brick at 1000 ~ 1600 ℃ under the linear expansion rate is 1.0% to 2.0%, and approximate or linear, refractory products, the thermal conductivity of magnesium specializes in second only to carbon brick, with the temperature rise reduce. Under the condition of water cooling at 1100 ℃, the number of thermal shock of magnesia brick is only 1 ~ 2 times. MgO brick on the CaO and ferrite alkaline slag resistance, but with SiO2 and other acidic slag resistance is weak, and therefore can not be used in direct contact with the silica bricks, generally separated by a neutral brick. At room temperature, the conductivity of magnesia brick is very low, but at high temperature, its conductivity will not be ignored. The performance of magnesium brick, due to the use of raw materials, production equipment, process measures, etc. have a greater difference. Magnesia brick load softening temperature and the collapse of the beginning of the temperature difference is not much difference between this and the silica brick, because the main phase of magnesium bricks is periclase, but the periclase crystals in the magnesia brick is not crystalline network skeleton, but by the binding of the binder.(http://www.magnesiabricks.com/product/magnesia_brick.html)
Therefore, the nature of the combination determines the high-temperature structural strength of magnesia brick. In common magnesia brick, as the combination is generally calcareous olivine and magnesium rose pyroxene and other low-melting silicate phase, although the magnesia brick constitute the higher melting point of the periclase grain, but at about 1500 ℃ melting Of the silicate phase exists, and its liquid phase viscosity at low temperature is very small, therefore, reflects the deformation of ordinary magnesia brick deformation temperature and collapse temperature difference is not large, but with a greater difference in refractoriness. And the softening start temperature of high-purity magnesia brick can reach 1800 ℃, mainly because the combination between the periclase grains is forsterite or dicalcium silicate, and the melting temperature of eutectic with MgO is high , The lattice strength between the crystal and plastic deformation at high temperature is small, crystal particles with good.
Tuesday, December 27, 2016
Tuesday, December 20, 2016
The Advantages of Mullite Insulation Brick
Mullite insulation brick has several advantages:
1. Insulating brick without radiation, green, can be widely used in a variety of public buildings and home interior decoration.
2. The installation of cement, saving a lot of material, manpower and time. Reduce the production of cement combustion caused by air pollution, in line with green low-carbon environmental protection requirements.
3. More than 70 carrier life, 20 years of renovation life long, to adapt to climate and complex environment and other fields. Compared to the international aluminum plate, aluminum veneer and steel hanging plate quality, reduce bearing 30% ~ 90%.(http://www.insulatingbrick.com/product/mullite_insulation_brick.html)
4. Double effect, the general shortened period, the comprehensive cost from 30% to 70%.
5. The comprehensive replacement of aluminum-plastic panels, honeycomb panels, curtain wall and other commonly used decorative materials, multi-functional integration, a construction can solve the insulation decorative two functional requirements, smooth and beautiful decorative strong.
6. Insulating brick high strength, good rigidity, anti-seismic, wind, creep resistance, superior performance, reduce construction load, more economical and durable.
7. Flame-retardant, energy-saving insulation, noise, crack waterproof, energy efficiency requirements by building construction design requirements of 65%.
1. Insulating brick without radiation, green, can be widely used in a variety of public buildings and home interior decoration.
2. The installation of cement, saving a lot of material, manpower and time. Reduce the production of cement combustion caused by air pollution, in line with green low-carbon environmental protection requirements.
3. More than 70 carrier life, 20 years of renovation life long, to adapt to climate and complex environment and other fields. Compared to the international aluminum plate, aluminum veneer and steel hanging plate quality, reduce bearing 30% ~ 90%.(http://www.insulatingbrick.com/product/mullite_insulation_brick.html)
4. Double effect, the general shortened period, the comprehensive cost from 30% to 70%.
5. The comprehensive replacement of aluminum-plastic panels, honeycomb panels, curtain wall and other commonly used decorative materials, multi-functional integration, a construction can solve the insulation decorative two functional requirements, smooth and beautiful decorative strong.
6. Insulating brick high strength, good rigidity, anti-seismic, wind, creep resistance, superior performance, reduce construction load, more economical and durable.
7. Flame-retardant, energy-saving insulation, noise, crack waterproof, energy efficiency requirements by building construction design requirements of 65%.
Monday, December 12, 2016
The Advantages of Sillimanite Brick
Sillimanite brick is made of sillimanite refractory brick. The general use of high-temperature combustion and mud casting production.
Sillimanite brick has several advantages:
1. Non-ferrous metal smelting industry application
The use of silicon carbon, high temperature, high strength, good thermal conductivity, impact resistance, high temperature indirect heating materials, such as strong ort furnace. Distillation furnace tower, aluminum cell, copper furnace lining, furnace arc zinc plate zinc powder, thermocouple protection tube
2. Iron and steel industry application
The use of silicon carbide corrosion resistance. Heat shock wear resistance. Good thermal conductivity, suitable for large blast furnace lining, improve service life.
3. Metallurgy and mineral processing industry applications
The abrasion resistance is 5 ~ 20 times of the service life of cast iron, rubber, is the aviation industry, the aviation industry, the aviation industry, the aviation industry, the aviation industry, Track the ideal material.
4. Building material ceramics, wheel industry application
Use thermal conductivity. Heat radiation, high strength, the characteristics of plate kiln furniture, not only can reduce the carrying capacity of kiln furniture, kiln can also improve the carrying capacity and product quality and shorten the production cycle, is the ideal indirect ceramic glaze sintering sintering material.
Sillimanite brick has several advantages:
1. Non-ferrous metal smelting industry application
The use of silicon carbon, high temperature, high strength, good thermal conductivity, impact resistance, high temperature indirect heating materials, such as strong ort furnace. Distillation furnace tower, aluminum cell, copper furnace lining, furnace arc zinc plate zinc powder, thermocouple protection tube
2. Iron and steel industry application
The use of silicon carbide corrosion resistance. Heat shock wear resistance. Good thermal conductivity, suitable for large blast furnace lining, improve service life.
3. Metallurgy and mineral processing industry applications
The abrasion resistance is 5 ~ 20 times of the service life of cast iron, rubber, is the aviation industry, the aviation industry, the aviation industry, the aviation industry, the aviation industry, Track the ideal material.
4. Building material ceramics, wheel industry application
Use thermal conductivity. Heat radiation, high strength, the characteristics of plate kiln furniture, not only can reduce the carrying capacity of kiln furniture, kiln can also improve the carrying capacity and product quality and shorten the production cycle, is the ideal indirect ceramic glaze sintering sintering material.
Monday, December 5, 2016
The Nature of Conjugate Determines the High Temperature Structural Strength of the Magnesia Brick
Because of the good high temperature performance and strong alkali slag resistance of the magnesia brick, it is widely used in steelmaking furnace lining, ferroalloy furnace, metal mixer, nonferrous metallurgical industry furnace, lime kiln building material, glass industry regenerator heat exchanger grid Lattice, high temperature calcined kiln and tunnel kiln refractory industry. The fire resistance of the magnesia brick is above 2000 ℃, the fire resistance under load is equal to the melting point of the combined phase, and the liquid phase result is changed at high temperature. Generally, the softening temperature of load of magnesia brick is 1520 ~ 1600 ℃.
Magnesia brick at the 1000 ~ 1600 ℃ linear expansion rate is generally 1.0% to 2.0%, in refractory products, the thermal conductivity of magnesia brick after carbon brick, with the temperature decreases. In the 1100 ℃ water cooling conditions, the number of magnesia brick thermal shock is only 1 to 2 times. MgO brick has a strong basic slag resistance to CaO and ferrite, but the weak acid slag has strong resistance to SiO2, so it is not used in direct contact with silica brick, and is generally separated by neutral brick. At room temperature, the magnesia brick is very low in conductivity, but at high temperatures, the conductivity is not negligible. The performance of magnesia brick, due to different raw materials, production equipment, technical measures, there is a big difference. The difference between the starting temperature and the collapse temperature of the magnesia brick is not so big as that of the silica bricks because the main phase composition of magnesia bricks is periclase and the periclase crystals are not the crystalline network skeleton , But by combination gluing.(http://www.magnesiabricks.com/product/magnesia_brick.html)
Therefore, the combination of the nature of the magnesium brick determines the high-temperature structural strength. In ordinary magnesium bricks, although the magnesite grains of magnesium olive bricks have a higher melting point, there is a molten silicate phase of about 1500 ° C, and the viscosity of liquid phase viscosity at high temperature is very small, so the load deformation temperature And the collapse temperature is not big, but with the difference of stainless steel is bigger. The starting temperature of the high-purity magnesia-magnesia bricks can reach 1800 ℃, mainly because the periclase is a combination of forsterite or dicalcium silicate, the melting temperature of the eutectic solution is high, the formation of MgO is high, and the intensity between the lattices is large , Plastic deformation at high temperature is small, a good combination of crystalline particles.
Magnesia brick at the 1000 ~ 1600 ℃ linear expansion rate is generally 1.0% to 2.0%, in refractory products, the thermal conductivity of magnesia brick after carbon brick, with the temperature decreases. In the 1100 ℃ water cooling conditions, the number of magnesia brick thermal shock is only 1 to 2 times. MgO brick has a strong basic slag resistance to CaO and ferrite, but the weak acid slag has strong resistance to SiO2, so it is not used in direct contact with silica brick, and is generally separated by neutral brick. At room temperature, the magnesia brick is very low in conductivity, but at high temperatures, the conductivity is not negligible. The performance of magnesia brick, due to different raw materials, production equipment, technical measures, there is a big difference. The difference between the starting temperature and the collapse temperature of the magnesia brick is not so big as that of the silica bricks because the main phase composition of magnesia bricks is periclase and the periclase crystals are not the crystalline network skeleton , But by combination gluing.(http://www.magnesiabricks.com/product/magnesia_brick.html)
Therefore, the combination of the nature of the magnesium brick determines the high-temperature structural strength. In ordinary magnesium bricks, although the magnesite grains of magnesium olive bricks have a higher melting point, there is a molten silicate phase of about 1500 ° C, and the viscosity of liquid phase viscosity at high temperature is very small, so the load deformation temperature And the collapse temperature is not big, but with the difference of stainless steel is bigger. The starting temperature of the high-purity magnesia-magnesia bricks can reach 1800 ℃, mainly because the periclase is a combination of forsterite or dicalcium silicate, the melting temperature of the eutectic solution is high, the formation of MgO is high, and the intensity between the lattices is large , Plastic deformation at high temperature is small, a good combination of crystalline particles.
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