Where can be light qualitative tall aluminous brick bought?

Light qualitative tall aluminous brick can be in home of heat preservation brickyard or each are big on platform some, if you want to look for low-cost, quality relies on chart, the proposal seeks advice from flourish Cheng Naicai, more than 10 aged factories, character has safeguard.


Light qualitative tall aluminous brick is the important insulation material in hot project kiln. Of light qualitative tall aluminous brick reasonable make and choose to be opposite reasonable use fulfil energy policy the sources of energy, correctly to have important sense. In all sorts of light qualitative insulation material, light qualitative tall aluminous brick is fireproof the gender is tall, the size is small; Raw material is rich, firebrick is low-cost, it is good insulation material.
Production of raw material of light qualitative tall aluminous brick pledges tall aluminous brick uses grog of 3 class alumina commonly gently, al2O3 pink and soft clay. Content of the R2O in 3 class alumina is 1100~1400 ℃ for 0.5%~2% firing temperature between. According to the experiment, aluminous medium aluminous. It can promote R2O brilliant photograph decomposes Molaishi, the vitreous photograph of 1%R2O10% and corundum can be formed, be close to when content when R2O 2% when. Photograph of Mo Laishi brilliant often disappears, form more corundum and vitreous photograph, because of R2O it can decompose Molaishi, the Molaishi in bringing about earthy mine is acicular the network structure that crystal alternates each other breaks down. Make Molaishi exists with photograph of insular shape glass, drop load bate temperature, reduce thermal stability. Accordingly, content of raw material R2O wants special restriction, use colophony acerbity natrium wants as the craft of form a vesicle of foaming agent particularly strict.
TiO2 also is one of impurity with the higher content in earthy mine, in mine of 3 level land, tiO2 enters glass more, reduce fluid photograph viscosity, be helpful for agglomeration, but go against the high temperature capability that improves light qualitative tall aluminous brick. R2O advocate brilliant photograph Mo Laishi and corundum have bigger solid fusibility in aluminous grog, fe2O3 begins solidify to be on Molaishi in 1200 ℃ , till 10%~12% of frit of 13000 ℃ solid. And in corundum, 1200 ℃ make an appointment with solid frit 12 ％ , time of frit of 1400 ℃ solid is about 18% . In reducing atmosphere, solid fusibility is reduced, easy Tuo Rong enters vitreous phase. When light qualitative tall aluminous brick is used in reducing atmosphere, also want to be restricted strictly to Fe2O3.
Brick of tall aluminous heat preservation, alumina content exceeds 48% , basically comprise by photograph of Molaishi, glass or corundum. Bulk density 0.4 ～ 1.35g/cm3. Porosity 66%~73% , compression intensity 1~8MPa. Heatproof shake performance is better. Use tall bauxite normally clinker and a few clay, law or bubble law produce with gas after mill with slop form pouring shape, classics 1300~1500 ℃ is firing. Sometimes industrial alumina also can be used replace grog of mine of a few land. With the liner that constructs pit at build by laying bricks or stones and thermal insulation, and the place that be eroded without material of frit of intense high temperature and erodes. When contacting blaze directly, temperature of watch surface contact does not get prep above 1350 ℃ . Light qualitative tall aluminous brick, call heat preservation firebrick normally, also call heat preservation firebrick. Above all, look from literal, light qualitative tall aluminous brick and the weight that weigh qualitative tall aluminous brick are completely different product. Light qualitative tall aluminous brick, call heat preservation tall aluminous brick again, its essence purpose is heat preservation and heat preservation function. In be used normally, kiln of not direct contact is lukewarm, it is a kind of firebrick product that stands by furnace wall, have.
Firing light qualitative tall aluminous brick is in the fire of light qualitative tall aluminous brick, often contain R2O, RO, the foreign matter oxide such as Fe2O3. They and foreign matter oxide. Al2O3 and SiO2 make fluid appearance in the reaction below high temperature. One SiO2 of Al2O3, R2O is in the system, the growth that photograph of the fluid below high temperature measures speed as temperature lift and accelerate. Such, as a result of the addition of combustion temperature, of fluid photograph viscosity reduce what can bring about a brick to be out of shape of the high temperature capability with the brick reduce. Accordingly, in the agglomeration process that gives priority to with fluid photograph agglomeration, should use inferior combustion temperature and longer heat preservation time. Manufacturing practice makes clear, one, brick of 2 class tall aluminium can use identical combustion temperature. When burning in kiln pouring smoke, it is 1430 ℃ commonly, heat preservation 40h; The ℃ of 1390~1420 of tall aluminous brick such as Ill. When channel kiln is firing, reach 1450 ～ for 1550 ℃ respectively 1500 ℃ . Tall aluminous brick uses fire of weak oxidation atmosphere commonly.
According to different grade the quality of tall aluminous brick asks, choose the earthy mine raw material of different grade, be helpful for reasonable use, careful material, do not use the raw material with mixture severe social estate as far as possible. The quality of clinker depends on to calcine temperature, normally to calcine temperature should be achieved or mine of land of summary prep above firing temperature, in order to ensure clinker is complete agglomeration, as far as possible high bulk density, finish Molaishi 2 times to change in to calcine process contract with agglomeration.
Light qualitative tall aluminous brick calls tall aluminous heat preservation the brick again (High-aluminiumheatinsulatingbrick) . Alumina content exceeds 48% , basically comprise by photograph of Molaishi, glass or corundum. Bulk density 0.4 ～ 1.35g/cm3. Porosity 66%~73% , compression intensity 1~8MPa. Heatproof shake performance is better. Use tall bauxite normally clinker and a few clay, law or bubble law produce with gas after mill with slop form pouring shape, classics 1300~1500 ℃ is firing. Sometimes industrial alumina also can be used replace grog of mine of a few land. With the liner that constructs pit at build by laying bricks or stones and thermal insulation, and the place that be eroded without material of frit of intense high temperature and erodes. When contacting blaze directly, temperature of watch surface contact does not get prep above 1350 ℃ .
Where can be light qualitative tall aluminous brick bought? The welcome seeks advice from flourish Cheng Naicai, produce per year 80 thousand tons of figuration fireproof material, 50 thousand tons of indeterminate form are fireproof material, the product includes tall aluminous brick, clay brick, heat preservation brick, Molaishi brick, corundum brick, pouring makings, but plastic etc.