Material of more commonly used basis of heat preservation brick has clay, tall aluminium, Molaishi, silicon character brick of hollow ball heat preservation waits qualitative, corundum, alumina a moment.
Brick of silicon qualitative heat preservation
Silicon pledges heat preservation brick is heat-insulating material of a kind of high temperature, have tall purity, high strenth, Gao He the characteristic such as soft, small air hole, low matter content. Counteractive and acidity gas erodes ability stability of bulk of strong, high temperature is good, use temperature higher 1420 (℃ ) . Adiabatic thermal insulation removed on industrial kiln furnace, reduce the specific power consumption, effect that improves thermal efficiency, and still protect lining main body effectively to be able to bear or endure material, prolong the service life of kiln furnace. Now already more and more be applied extensively at body of heater of kiln of frit of of all kinds high temperature. In vitreous kiln furnace, basically use at regenerator wall and Xuan top.
Brick of Mo Laishi heat preservation
Mo Laishi pledges adiabatic brick is our country's new-style fireproof material, can contact blaze directly, have high temperature resistant, small the heatproof shake performance with degree of tall, small, good coefficient of thermal conductivity, energy-saving effect to wait for a characteristic significantly. Apply to crucible of kiln of drawer of porcelain of kiln of path of roller of splitting decomposition furnace, hot-blast stove, pottery and porcelain, report, glass and the liner of all sorts of electric stove. The crystallization of electric frit Mo Laishi is bigger than agglomeration Mo Laishi, heatproof shake sex is better than agglomeration goods. Their high temperature capability basically depends on the uniformity that the content of alumina and glass of Mo Laishi get along with distributing. Basically use at Xuan of brick of structure of regenerator of kiln of frit of shaft of hot-blast stove roof, blast furnace and hearth, glass, upside, upside lining of blind angle of system of splitting decomposition of kiln of agglomeration of brick of path of brick of foot of top, Xuan, makings, cover board, pottery and porcelain, oil, reaction furnace of carbon black of liner of lukewarm kiln furnace is urgent in industry of metallurgy pole other cold paragraph, keep paragraph of liner. Shape component, reaction furnace of lukewarm carbon black and other heat up tool buy liner in.
Brick of argillaceous heat preservation
Brick of argillaceous heat preservation calls clay qualitative adiabatic brick again is the alumina content that controls for main raw material with saggar the adiabatic and refractory products that is 30%~48% . Its produce craft to use burn oneself out to add content law and bubble way. With saggar, float bead, saggar grog makes raw material, mix into is added bond and curium wood chip, classics burden, mix, shape, dry, firing, make so that bulk density is the product of 0.3~1.3g/cm³ . The crop that sticks brick of earthy heat preservation occupies the half above of adiabatic firebrick total output. The manufacturing technology with commonly used brick of heat preservation of clay of technology of production of brick of argillaceous heat preservation is to add float bead burn oneself out adds content way, also can use bubble law technology.
Brick of tall aluminous heat preservation
The Al2O3 content that brick of light qualitative tall aluminous heat preservation controls for main raw material with aluminous alumina is not less than the adiabatic firebrick of 48 ％ . Tall aluminous qualitative adiabatic firebrick, basically use aluminous aluminous grog, combinative clay makes raw material, mix into is mixed into bond curium wood chip, to improve product performance, add the fine pink of stone of line of industrial alumina, corundum, silicon, cyanite, silica. Can make the product that gets above of Cm3 of ／ of bulk density 0.4g. Al2O3 content and bulk density are different, use temperature higher to also differ, be in normally 1350 ℃ of 1250 ～ , some can amount to 1550 ℃ . About the price of brick of light qualitative tall aluminous heat preservation, main influencing factor has the dimension of light qualitative tall aluminous brick, amount and manage to change target.
Alumina is hollow the standard of firebrick of ball heat insolation
Alumina is hollow ball goods with high pure hollow ball gives priority to alumina to want agglomeration of raw material high temperature and be become. Goods has bulk density small, compression intensity is high, coefficient of thermal conductivity is low, use temperature is advanced advantage. Can use extensively at synthesizing ammoniac liquefaction furnace, ethylene makes the liner of the furnace of high temperature kiln such as gas stove, mix to caustic gas slaggy have stronger counteractive capacity, use temperature is under 1800 ℃ .
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