The weight of light qualitative firebrick is lighter, can reduce kiln furnace to bearing the burden of place, bricky interior is distributinging equably a lot of stoma, can have good heat preservation and energy-saving effect, common product has brick of qualitative heat preservation of clay, diatomite, tall aluminium, Molaishi, silicon to wait.
Pledge heat preservation firebrick and common firebrick are compared gently, weight is light, in-house and well-balanced cloth has small air hole, porosity is tall. So boiler setting comes loose heat is little, fuel cost also can be reduced accordingly. Light qualitative brick also is meant store quantity of heat is smaller, heat so refrigeration is faster, allow to accelerate periodic operation. Firebrick of light qualitative heat preservation is practical the temperature limits at ℃ of 900 ℃ ~1650.
Alumina is hollow ball brick alumina is hollow ball brick is with alumina hollow ball is main raw material, becomes via agglomeration of 1800 ℃ high temperature light qualitative firebrick, belong to advanced heat preservation fireproof data products. Is alumina hollow: of ball brick utility? Dream of A Chinese-style unlined garment is shown still the liner of high temperature kiln of?500 ℃ above, liner of all sorts of high temperature kiln that wait for an industry like pottery and porcelain of fireproof material, industry brick; The heat-insulation layer of the hot project facilities such as the petrifaction aerification furnace, furnace that make energy of life.
Firebrick of heat preservation of diatomite of firebrick of diatomite heat preservation is a kind of light qualitative firebrick, want to be used as heat-insulation layer only. The classification of GB396-83 of active state level to the dimension of firebrick and norms, firebrick and manage changed the tolerance of index to make following provisions. Firebrick of diatomite heat preservation is GG-0.7a.GG-0.7b.GG-0.6.GG-0.5a.GG-0.5b.GG-0.4a by bulk density cent 6 brands. Mo Laishi pledges heat preservation brick is to show with earth mine, clay, 3 stone are main raw material gently, shape in material or a large number of mutual join or closed hole are formed in process of high temperature agglomeration. Because its hole rate is high, coefficient of thermal conductivity is low, the stability of high temperature resistant, heatproof shake that increases Mo Laishi solid to have is good, chemical stability is tall, wide application received in a lot of domains, caused the height of scientific group to pay close attention to. According to composition and structure different, the use temperature of brick of Mo Laishi heat preservation can amount to 1400 ℃ above. Watch 2 it is domestic and international the function of product of brick of light qualitative heat preservation compares a few kinds of Molaishi. Mo Laishi pledges the preparation method of adiabatic brick has a lot of gently. The preparation method with light qualitative adiabatic brick is same, standard of main strange law, porous material.
Silicon pledges adiabatic firebrick calls light qualitative silica brick commonly, basically make by finely silica, its are critical granuality does not exceed 1mm commonly, and the grain that is less than 0.5mm not less than 90% . In the slop that makes light qualitative silica brick, general mix into enters 35-45% anthracitic or 30% right-and-left coke serve as can light additive, granuality is less than 1mm. Choose and add of the bond in slop and mineralizer the amount is basic and as same as production silica brick. The fireproof sex of light qualitative silica brick and the common silica brick that are the same as into split phase differ not quite. Because air hole is much, compression intensity, be able to bear or endure broken bits sex, corrosion resistance is inferior to common silica brick. The use temperature of light qualitative silica brick does not exceed 1550 ℃ , do not contact directly with stock of high temperature melt, do not suffer the effect of aggressivity gas. Light qualitative silica brick presses utility cent to be mixed for one class 2 class. One form product is used at steel rolling heating furnace industry of top, firebrick is burned or kiln supports, can contact blaze directly, 2 form product is used at industry to heat up labor facilities partition.
Firebrick of heat preservation of light qualitative clay calls argillaceous heat preservation the brick again, it is the light qualitative thermal insulation that Al2O3 content has poriferous structure between 30%-46% fireproof product. Brick of light qualitative clay is main raw material with argillaceous grog or light qualitative clay, burden and bond mix plastic mud or slop, irrigate build shape or extrusion, classics combustible adds a way or slop bubble law or chemical legal system are become, dry hind high temperature fire and into.
Brick of light qualitative tall aluminous heat preservation uses tall bauxite clinker and a few clay, mill hind produces a law with gas or bubble law is irrigated with the form of slop build shape, firing 1300~1500 ℃ . Sometimes, grog of mine of a few land can be replaced with industrial alumina. Use at build by laying bricks or stones to build kiln liner and heat-insulation layer, and the place that be eroded without stock of melt of intense high temperature and erodes. When contacting blaze directly, temperature of watch surface contact does not get prep above 1350 ℃ .
The product function of firebrick of light qualitative heat preservation: 1. Heat conduction rate is low, thermal capacitance is low, matter content is low. 2. Intensity is high, heatproof shake performance is good, acid-proof alkaline atmosphere is corroded. 3. Dimension precision is tall.
Light qualitative firebrick basically is used at the heat-insulation layer of furnace of high temperature kiln, main use is heat preservation, adiabatic, energy-saving, environmental protection.
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