Belong to heat preservation the product of fireproof material has a lot of, can classify according to temperature, also can be classified according to appearance, material character, these products include: Boarding, indeterminate form, still have fiber, if heat preservation brick, heat preservation is pouring,cotton of makings, heat preservation is waited a moment.
Boarding heat preservation is fireproof material 1, brick of heat preservation of light qualitative clay and common firebrick compare brick of argillaceous heat preservation, weight is lighter, interior distributings equably small hole, hole rate is higher. Accordingly, it can ensure less quantity of heat from furnace wall loss, the cost of fuel also can be reduced accordingly. Light qualitative brick also means quantity of heat to store fewer, heat accordingly and refrigeration is faster, and can quicken periodic operation. Light qualitative adiabatic firebrick applies to the temperature limits of ℃ of 900 ℃ ~1650.
Brick of heat preservation of 2. tall aluminium. Light qualitative tall aluminous adiabatic brick is the Al2O3 content that controls for main raw material with bauxite not under the adiabatic firebrick of 48% . Tall aluminous firebrick basically is raw material with bauxite grog, combinative clay is raw material, mix into enters binder and sawdust. To improve product performance, added stone of line of industrial alumina, corundum, silicon, cyanite and the fine pink of 2 oxidation silicon. Can preparation accumulation density is in the product of 0.4g/cm3 above. High use temperature changes along with the content of Al2O3 and accumulation density, come in 1250 ℃ normally between 1350 ℃ , some can amount to 1550 ℃ . As to the price of light qualitative tall aluminous brick, the dimension that main influencing factor is light qualitative tall aluminous brick, amount and manage change target.
3. Mo Laishi pledges gently brick. Mo Laishi perforated brick calls light qualitative Molaishi brick or brick of Mo Laishi heat preservation again, it is with high quality aluminous alumina clinker is main raw material, form poriferous structure through foaming or chemical law, mix with water, make model mud or slop, fire of the high temperature after extrusion and brick of become high quality heat preservation. Accumulation density is 0.6-1.2g/cm3 commonly, use temperature is spent for 1300-1550. Abnormity dimension but according to blueprint custom-built. The basis uses temperature, cent is the model such as JM-23, JM-26, JM-28. This kind of product can be contacted directly with blaze, have high temperature resistant, coefficient of thermal conductivity the characteristic with tallish, energy-saving distinct effect.
4. pledges gently silica brick. Silicon pledges firebrick calls light qualitative silica brick normally, basically make by finely 2 oxidation silicon. Critical bead diameter is not more than 1 millimeter normally, the grain that is less than 0.5 millimeter is less than 90% . Join 35-45% in the slop that makes light qualitative silica brick commonly anthracitic or 30% right-and-left coke serve as can light additive, its bead diameter is less than 1 millimeter. Choose and join of the binder in slop and mineralizer the amount is basic and as same as production silica brick.
5. alumina is hollow ball brick. Alumina is hollow ball brick is the light qualitative firebrick that by alumina hollow ball becomes in 1800 ℃ agglomeration, belong to advanced and adiabatic refractory products. Use the line of high temperature kiln of 1500 ℃ above, line 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 heating power equipment, wait like petrifaction aerification furnace, aerification furnace.
6. zirconia is hollow ball brick. Zirconia is hollow ball brick product is a kind of superhigh temperature energy-saving small qualitative particular kind is fireproof material, can use in 1800-2400 ℃ . Because the coefficient of thermal conductivity of this product is 0.3-0.4w/(m · K)-1, accordingly it can use as not only insulation liner material, still can use as the material of working layer liner of furnace of all sorts of superhigh temperature electric stove, aluminous silk, tungsten marvellous furnace. This product uses electric frit law to blow make zirconia hollow ball, be in next zirconia joins binder in hollow ball, become zirconia via shape and be being made after fire product of hollow ball brick.
7. diatomite brick. Brick of diatomite heat preservation is the appearance cut that presses firebrick by raw ore, become in 800-850 ℃ fire, or will diatomite and a few plasticity clay and sawdust mix, shape fire and brick of become diatomite heat preservation. Produce low density however; (0.4, 0.5g/cm3) firebrick should use advanced diatomite (2 oxidation silicon; 80%; pure diatomite 2 oxidation silicon. 96%~97%) . Must have the medium of burrow. Because use natural diatomite directly,do firebrick very inaccessible low density.
Float bead fireproof heat-insulating material. Float bead it is fly ash is when combustion of power plant boiler, below high temperature environment dehydration melts Cheng Wei drips, sphere of a circle is formed below airy action; Through a variety of physico-chemical reaction, the gas of generation expands in sphere, as the action of exterior tension, sphere turns hollow glass into bleb, cool quickly next sclerotic, the vitreous state that forms high vacuum eventually is hollow float bead. Bases is mixed for 2 oxidation silicon 3 oxidation 2 aluminium, and natrium of calcium of ferric oxide, oxidation, magnesian, titanium dioxide, K2O, oxidation. , among them silicon aluminous oxide occupies 80% above.
Siliceous aluminous fiber is fireproof heat-insulating material. Siliceous aluminous fireproof fiber calls pottery and porcelain fiber again, main by 2 oxidation silicon, 3 oxidation the composition such as natrium of 2 aluminium, ferric oxide, K2O, oxidation. Among them 2 oxidation silicon with 3 oxidation 2 aluminium occupy 95% above, 3 oxidation 2 iron are occupied about 0.98% , k2O and Na2O are occupied about 0.5% . Surface of siliceous aluminous fiber is slick, internal solid matter exists with the form of successive framework, with the coefficient of thermal conductivity in space low empty gas phase matchs. Production methods of siliceous aluminous fireproof fibrous is will handpick flint clay raw material is in the electric stove of 2000 ℃ above fused, pass inject next or centrifugal make its fiber is changed.
Mineral (rock) cotton insulation material. Mineral (cliff) cotton belongs to mineral cotton, bases is mixed for 2 oxidation silicon 3 oxidation 2 aluminium, the others is oxidation calcium and the material such as a few magnesian, ferric oxide. Cliff cotton is it is main raw material with the natural igneous rock such as basalt, diabase, the complementary material with proper rejoin and binder, melt of classics high temperature, centrifugal inject makes fiber; Cliff cotton basically has blow make law, centrifugal process and centrifugal blow make a way.
Heat insulating materials of closed pore pearlite. Closed pore pearlite is with natural pearlite mine is raw material, through a series of sophisticated technology, include pearlite raw ore, broken screening to heat into pearlite mine, warm-up, multistage, expand vitrification, cooling processing and finished product.
Vermiculite insulation material. Vermiculite is a kind of aluminous silicate that contains iron, magnesium mineral, basically be hot fluid corrode change or efflorescent child, wait like biotite, phlogopite, clay mineral, the part is by acidity magma is opposite base of sexual cliff erode degenerative action to form.
Vitreous cotton insulation material. Vitreous cotton is sound absorption material of heat insolation of a kind of inorganic fiber, its production methods has flame standard, vapour perpendicular blow make law and centrifugal blow make a way. Current, the blaze cotton specific power consumption that produces as a result of blaze eject law content of broken bits ball is tall, high, already was replaced by centrifugal filature law, centrifugal filature law is specific power consumption the main production technology of the low, ball that do not have broken bits, free from contamination.
Compound silicate insulation material. Compound silicate is fireproof insulation material is the closed pore that be joined by solid matrix and becomes reticulate structure material, main with aluminium magnesium silicate special metalloid mineral for base makings, distribute the complementary makings with ration and fill material, add proper chemical additive to be made again.
Siliceous calcic insulation material. Siliceous calcic insulation material calls small hole silicon acid calcic insulation material again. Raw material is the silicon simple stuff such as lime, asbestine commonly. Siliceous calcic material is OK broken bits of the deserted solid content that in be being produced with industry, remains, pottery and porcelain and marble fragment are raw material, become through specific craft preparation.
Kiln furnace chooses the economic principle of adiabatic and fireproof material. The main function of kiln furnace basically is decided by the technical economic performance of fireproof material, affect the investment cost of kiln furnace, character of service, thermal efficiency and specific power consumption directly. The general principle that chooses fireproof material and heat-insulating material: 1. The function of kiln furnace and heat are characteristic. The kiln furnace of intermittent job should choose the material with small thermal capacity. 2. Use temperature is safe, heat conduction system, the high temperature intensity of material and chemical stability. 3. Service life. 4. Investment cost and move maintain cost.
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.
Get Price
WhatsApp