It is in the contemporary industry with mineral products increasingly nervous resource, the refractory products of managing environmental protection becomes hot industry business to compare gay product, the use of light qualitative adiabatic firebrick with each passing day grow in quantity. The defect of light qualitative firebrick is difference of heat proof quality, the advantage is long-term high temperature resistant function is very good. In use can reduce the weight of kiln body, reduce specific power consumption thereby, raise the economic benefits of the enterprise. Light qualitative adiabatic firebrick is make with all sorts of fireproof raw material, for example: Tall aluminous fines, ceramists, adscititious a certain number of additive are configured and become; For example: Raw material of light qualitative tall aluminous brick, production pledges tall aluminous brick all uses pink of grog of 3 class alumina, Al2O3 and soft qualitative clay commonly gently. Content of the R2O in 3 class alumina is 0.5 ％ ～ 2 ％ , firing temperature is between 1100~1400 ℃ . The basis experiments, the R2O in vitriol person can make photograph of Mo Laishi brilliant decompose, the R2O that has 1 ％ can form the vitreous photograph of 10 ％ and corundum, when R2O content is close to 2 ％ . Photograph of Mo Laishi brilliant tends disappear, and form more corundum and vitreous photograph, having catabolism to Molaishi because of R2O, the Molaishi in bringing about alumina is acicular the network structure that crystal alternates each other breaks down. Make Molaishi exists with Gu island shape in vitreous photograph, make bate temperature reduces loading to become poor with thermal stability. The R2O content with because this is right medium raw material wants special restriction, the technology noting an oar that makes foaming agent to using colophony acerbity sodium wants especially strict. TiO2 also is one of impurity with the higher content in alumina, in 3 class alumina, tiO2 enters vitreous phase more, reduce fluid photograph viscosity, be helpful for agglomeration, but go against the high temperature capability that improves light qualitative tall aluminous brick. R2O is in of aluminous grog advocate brilliant photograph all has bigger solid fusibility in Molaishi and corundum, fe2O3 begins solid frit in 1200 ℃ Yumolaishi, to frit of 1300 ℃ solid 12 ％ of 10 ％ ～ . And in corundum, 1200 ℃ make an appointment with solid frit 12 ％ , frit originallies about when 1400 ℃ 18 ％ . Below reducing atmosphere, solid fusibility is reduced, take off frit to enter vitreous phase easily. When pledging tall aluminous brick is used in reducing atmosphere gently, also should father to Fe2O3 impose restriction. Light simple fireproof stuff is had reduce bulk density, raise heat-resisting shake sex, increase mechanical strength, reduce the heavy change that burn a line, improvement heat proof quality, lengthen service life and more economic way develops. The air hole in light qualitative firebrick is made through adding the light aggregate such as combustible, vesicant or hollow ball, stomatic size is larger. These stoma not only adiabatic effect is not tall, still affect the mechanical performance of goods. If increase stomatic bulk mark, aperture of a lot of air can reunite together, affect the intensity of adiabatic brick. But, the area comparing a list of light qualitative adiabatic brick is inferior, can more inferior than the surface. Consequently, thermodynamic stability is better. Be heated is long-term after action, produce metamorphism not easily. About wanting kiln furnace energy-saving environmental protection introduces here, hope to be helped somewhat to everybody. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.
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