Brick of Mo Laishi heat preservation is with Molaishi (3Al2O3·2SiO2) the expensive aluminous simple fireproof stuff that gives priority to brilliant photograph. General alumina content is in 65% ～ 75% between. Mineral composition divides Molaishi outside, contain alumina among them inferior person still contain a few glass photographs and Fang Shiying; Contain alumina taller person still contain a few corundum. Brick of Mo Laishi heat preservation can be used at liner of furnace of high temperature kiln directly, use extensively already at the liner of shuttle type kiln, roller path kiln, glass and petro-chemical kiln furnace at present.
Brick of heat preservation of light qualitative Mo Laishi:
Density of bulk of firebrick of light qualitative Mo Laishi is less than the light qualitative firebrick that is equal to 1.3g/cm3, because its coefficient of thermal conductivity is low, energy-saving effect is better, can regard the kiln furnace that contacts blaze directly as liner, but temperature of bate of loading of existence of general light qualitative firebrick is low, burn systole to wait for a problem greatly again, use as heat preservation heat-insulating material more consequently, and the light qualitative firebrick with a few good high temperature capability, manufacturing cost is high, price of this kind of light qualitative firebrick is high, the user is accepted hard again. My company foundation market demand, development went light qualitative Molaishi brick, the industry such as pottery and porcelain, chemical industry, metallurgy to raise economic benefits, to the light qualitative Molaishi with price moderate, good performance firebrick demand increases, make firebrick of this kind of light qualitative Mo Laishi received wide application on liner of its kiln furnace.
The brick can serve as general light qualitative Molaishi operate temperature higher not the liner of general kiln furnace of 1550 ℃ uses prep above. In pledging the brick produces Molaishi gently, relatively eventually the exterior dimension of the product assures, mix except burden firing outside influencing factor, basically rely on profiling of neat semi-manufactured goods machinery to assure.
1, the action of additive
This additive is the compound additive that comprises by a variety of fireproof material, can promote what type reacts to undertake, in light qualitative Molaishi each phase with firing brick has very good steady volume effect, happen a series of physico-chemical reaction, make Mo Laishi appearance.
2, burn lost property
Be used burn lost property to be polystyrene spherule and wooden pink. Polystyrene spherule is a hydrocarbon, firing hind can in light qualitative Molaishi bricky interior is formed inside the atmosphere hole wall of spherical and smooth globose air aperture and solid excel in. The weakness of pushball is, the sphere in pug is easy reunite, and cannot form pull pull, go against base substrate intensity consequently rise. The permission of pushball adds a capacity finite, not come gently character to be reduced effectively stone brick density, and do not reduce base substrate intensity,
3, the action of the agent that decrease water
Light qualitative Molaishi of the brick shape the method is belonged to wet but model shapes, content of pug water portion is high, the systole that the base substrate in dry process produces is big, barren base is easy occurrence crackle and systole not all. Decrease the affiliation of water agent, the affiliation that reduced water effectively is measured, avoided the happening of afore-mentioned problems.
The alumina content of firebrick of general light qualitative Mo Laishi is in 65% ～ 75% between. Mineral composition divides Molaishi outside, contain alumina among them inferior person still contain a few glass photographs and Fang Shiying; Contain alumina taller person still contain a few corundum. Fireproof degree taller, can amount to 1790 ℃ above. Loading bate begins temperature 1700 ℃ of 1600 ～ . Intensity of normal temperature compression 70 ～ 260MPa. Heatproof shake sex is good. Have agglomeration Mo Laishi brick and electric frit Mo Laishi brick two kinds. Agglomeration not comes stone brick is main raw material with tall aluminous aluminous grog, join a few clay or unripe alumina to make bond, via shaping, firing and make. Electric frit not comes stone brick is raw material with alumina of tall alumina, industry and fireproof clay, join charcoal or coke granule to make reducer, law of reductive report frit is used to make after shaping. 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 lining of blind angle of system of splitting decomposition of kiln of agglomeration of regenerator of kiln of frit of shaft of hot-blast stove roof, blast furnace and hearth, glass, pottery and porcelain, oil to wait.
Heavy qualitative Molaishi brick:
Mo Laishi brick is with Molaishi (3Al2O3-2SiO2) the expensive aluminous simple fireproof stuff that gives priority to brilliant photograph. General alumina content is in 65% ～ 75% between. Mineral composition divides Molaishi outside, contain alumina among them inferior person still contain photograph of a few glass and Fang Shiying; Contain alumina taller person still contain a few corundum.
Product advantage
1, fireproof degree taller, can amount to 1790 ℃ above. Loading bate is germinant temperature 1700 ℃ of 1600 ～ . Intensity of normal temperature compression 70 ～ 260MPa. Heatproof shake sex is crackajack.
2, have agglomeration Mo Laishi brick and electric frit Mo Laishi brick two kinds.
3, agglomeration of Mo Laishi brick produce of craft and tall aluminous firebrick produce technology is similar. Choose grog of compositive Mo Laishi to expect for grain, fine pink is grog of compositive Mo Laishi, or choose pink of Bai Gangyu, quartz and pure clay to make up those who be equivalent to Molaishi comprising to mix fine pink. grain makings and fine pink cooperate by portion, commonly used deserve to compare for: Grain expects 55 ％ of 45 ％ ～ , fine pink (45 ％ of ～ of ＜ 0.088mm)55 ％ .
4, the crystallization of electric frit Mo Laishi is bigger than agglomeration Mo Laishi, heatproof shake sex is better than agglomeration goods. Their high temperature function is principal depend on the uniformity that the content of alumina and glass of Mo Laishi get along with distributing.
5, heavy qualitative Molaishi the brick is principal use at lining of blind angle of system of splitting decomposition of kiln of agglomeration of regenerator of kiln of frit of shaft of hot-blast stove roof, blast furnace and hearth, glass, pottery and porcelain, oil wait.
One, the item characteristics of brick of Mo Laishi heat preservation:
1, rate of low heat conduction, have effect of very good adiabatic heat preservation;
2, frit of low heat of brick of Mo Laishi heat preservation, because low heat conduction is led, mo Laishi series pledges gently the heat energy with adiabatic brick very few save up, energy-saving in intermittent operation effect is apparent;
3, matter content is low have the oxide content such as alkali metal of low-down iron box, accordingly, fireproof degree tall; The higher volume that contain aluminium makes its still maintain good performance below reducing atmosphere;
4, intensity of compression of hot condition of brick of Mo Laishi heat preservation is high;
5, exterior size is exact, accelerate build by laying bricks or stones to build career, reduce fireproof mud to use an amount, assured the intensity of body of build by laying bricks or stones and stability, prolong the life of liner thereby;
6, brick of Mo Laishi heat preservation can process special form. Seam in order to reduce number of brick of build by laying bricks or stones and build by laying bricks or stones.
2, the classification of brick of Mo Laishi heat preservation:
The different and main component of brick of Mo Laishi heat preservation according to density weighs qualitative Molaishi to be mixed gently character brick, according to using temperature different and main component is: Bricks of bricks of 1350 Mo Laishi heat preservation, 1450 Mo Laishi heat preservation, 1550 Mo Laishi bricks. The function of brick of Mo Laishi heat preservation reachs his to apply: Fireproof degree taller, can amount to 1790 ℃ above. Loading bate begins temperature 1700 ℃ of 1600 ～ . Intensity of normal temperature compression 70 ～ 260MPa. Heatproof shake sex is good. Have agglomeration Mo Laishi brick and electric frit Mo Laishi brick two kinds. Agglomeration not comes stone brick is main raw material with tall aluminous aluminous grog, join a few clay or unripe alumina to make bond, via shaping, firing and make. Electric frit not comes stone brick is raw material with alumina of tall alumina, industry and fireproof clay, join charcoal or coke granule to make reducer, law of reductive report frit is used to make after shaping. 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 lining of blind angle of system of splitting decomposition of kiln of agglomeration of regenerator of kiln of frit of shaft of hot-blast stove roof, blast furnace and hearth, glass, pottery and porcelain, oil to wait.
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