The loss of accumulation of heat of body of heater, not quite important to the kiln furnace of successive operation, because furnace of this kind of kiln runs a few months normally,come several years to just require maintenance stopping furnace. But discontinuous to intermittent type use kiln heat, lining is fireproof the loss of accumulation of heat of material is very big, the thermal capacity of body of ply of the dimension of it and kiln furnace, boiler setting, build by laying bricks or stones, the thermal conductivity of material and heat the element such as time and temperature is concerned, amount to 5%-25% .
Take the kiln heat of water-cooling measure, the loss of quantity of heat that cooling water takes away is very big also. For example, continuous the canal of slippery course water-cooling of steel ingot heating furnace, be in need not when fireproof material does heat insolation to wrap up, the hot loss that cooling water takes away is as high as 25% above.
Kiln furnace is different the eyelet on place, furnace door, juncture quantity of heat that is in leakage be lost is not little also, if the loss of quantity of heat of be lost of furnace door of electric arc furnace is as high as 35% .
Brick of heat insolation of Mo Laishi qualitative heat preservation
Mo Laishi pledges brick of heat preservation heat insolation is 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.
Mo Laishi brick or light qualitative Molaishi brick: Be with Mo Laishi brick (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. 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 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 heat insolation of light qualitative tall aluminous heat preservation
Alumina content is in 48% above, main the light qualitative fireproof material that constitutes jointly by Molaishi and vitreous photograph or corundum. Bulk density 0.4 ～ 1.35g/cm3. Porosity 66% ～ 73% , compression intensity 1 ～ 8MPa. Heatproof shake performance is better.
Zhengzhou flourish Cheng Naicai basically produces: Brick of 3 class tall aluminium brick of 2 class tall aluminium tall aluminous brick fights phosphate of brick of one class tall aluminium flake brick of tall aluminium of low creep of tall aluminous brick pledges gently all sorts of tall aluminous bricks such as tall aluminous brick, product quality is reliable, price privilege,
Light qualitative tall aluminous brick, brick of heat preservation heat insolation. Understand first from literal, light qualitative tall aluminous brick and the weight that weigh qualitative tall aluminous brick are disparate product. Light qualitative tall aluminous brick, also call heat insolation tall aluminous brick, its essence purpose is heat insolation and heat preservation function. Do not contact directly with furnace kiln temperature in be used normally, be wall of a kind of clingy furnace, have the firebrick product of heat insolation and heat preservation action.
Weigh qualitative tall aluminous brick, also make tall aluminous brick, its itself weight should compare light qualitative tall aluminous brick to weigh on a lot of times, not be for adiabatic heat preservation in the process that using, more important is for fireproof temperature, in using a process normally as direct as the blaze inside kiln furnace contact, so heavy qualitative tall aluminous brick has high temperature resistant effect normally.
Use tall aluminous aluminous grog to add a few clay normally, law or bubble law produce with gas after classics mill with slop form pouring, figuration, via 1300 ～ 1500 ℃ are firing. Also can replace partial alumina grog with industrial alumina sometimes. With the liner that builds kiln furnace at build by laying bricks or stones and thermal insulation, and erode without stock of melt of intense high temperature reach erode the place of action. When be being contacted with blaze directly, temperature of watch surface contact does not get prep above 1350 ℃ .
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