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. Light qualitative firebrick is to show porosity is tall, density is small (be less than the firebrick with M3) of 1300 Kg ／ , low thermal conductance commonly, have the adiabatic sex with poriferous finer structure, because this also calls adiabatic firebrick. The defect of light qualitative firebrick is difference of the function that fight broken bits, mechanical intensity difference of function of low, wear-resisting and heatproof shake sex are bad, because this cannot be used at contacting slaggy place, mechanical vibration directly large position, bearing structure and soot wear away large position. But the thermal insulation that regards industry as furnace, can reduce the quality of body of heater, drop environmental temperature. The function index of brick of commonly used light qualitative saggar should accord with the regulation of GB ／ T 3994. The function index of commonly used tall aluminous qualitative adiabatic firebrick should accord with the regulation of GB ／ T 3995. 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. Of light qualitative firebrick fireproof the defect that spends light qualitative firebrick is difference of heat proof quality, the advantage is long-term high temperature resistant function is very good. 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. Light qualitative adiabatic firebrick belongs to heat-insulating material, it can reduce kiln body to come loose hot, specific power consumption of managing kiln furnace, still can reduce kiln style quality, reduce kiln furnace integrated cost. The main performance characteristics of light simple adiabatic and fireproof stuff has bulk density, porosity, thermal conductance, use temperature and mechanical strength. The heat-insulating material that satisfies each function requirement completely is not much. The sort of light qualitative adiabatic firebrick is very much, can press different method classification. ① is microtherm by use temperature cent model be less than 900 ℃ ) , be like diatomite brick, pearlite brick; In lukewarm model (1200 ℃ of 1000 ～ ) , brick of if vermiculite, silicon acid is calcic, light qualitative clay, siliceous aluminous fiber; High temperature (> ) of 1200 ℃ above, if light qualitative tall aluminous brick, alumina is hollow ball. ② is by bulk density cent second pledge gently (1.39 ／ of 1.o0 ～ Cm3) ; Pledge gently (0.4. Cm3) of ～ 1.Og ／ and super- pledge gently (the following) of 0.49 ／ Cm3. ③ pledges to join combustible by production methods cent law, bubble law and chemical law. ④ is fiber shape, poriferous shape and grain shape by configuration cent. ⑤ is by cent of quality of a material natural with artifical. Adiabatic firebrick uses temperature limits and main characteristic to be as follows. Diatomite brick ≤ 900 make with natural and porous raw material, thermal conductance is small, heat proof quality pledges very gently argillaceous brick 900 ～ 1100 multi-purpose combustible pledges legal system is built. Application pledges gently more extensively tall aluminous brick 1100 ～ 1250 can contact blaze directly, application is wide cordierite brick 1300 heat expand small, be able to bear or endure flake the gender pledges very gently corundum brick 1600 alumina content is high, application can fall in reducing atmosphere. Light qualitative silica brick 1550 loading of 1220 ～ softening point is high, brick of feldspar of thermal stability good calcium 1300 bulk of 1200 ～ density is small, be able to bear or endure burst apart alumina of function good bubble brick 1500 bubble of 1350 ～ law, use at heat insolation of kiln furnace high temperature. 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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