CN1084312C - Insulation annealing technology and device for casting alpha-beta A1203 refractory material - Google Patents
Insulation annealing technology and device for casting alpha-beta A1203 refractory material Download PDFInfo
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- CN1084312C CN1084312C CN98103494A CN98103494A CN1084312C CN 1084312 C CN1084312 C CN 1084312C CN 98103494 A CN98103494 A CN 98103494A CN 98103494 A CN98103494 A CN 98103494A CN 1084312 C CN1084312 C CN 1084312C
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- 238000009413 insulation Methods 0.000 title claims abstract description 99
- 238000000137 annealing Methods 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 239000011819 refractory material Substances 0.000 title claims abstract description 12
- 238000005266 casting Methods 0.000 title claims description 26
- 239000011449 brick Substances 0.000 claims description 17
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 235000019353 potassium silicate Nutrition 0.000 claims description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000378 calcium silicate Substances 0.000 claims description 6
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 6
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 229910000975 Carbon steel Inorganic materials 0.000 claims 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 239000010962 carbon steel Substances 0.000 claims 1
- 239000011464 hollow brick Substances 0.000 claims 1
- 239000001095 magnesium carbonate Substances 0.000 claims 1
- 235000014380 magnesium carbonate Nutrition 0.000 claims 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 2
- 238000010891 electric arc Methods 0.000 abstract 1
- 229910010272 inorganic material Inorganic materials 0.000 abstract 1
- 239000011147 inorganic material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000011521 glass Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000003672 processing method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000012797 qualification Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000926 A-3 tool steel Inorganic materials 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910017119 AlPO Inorganic materials 0.000 description 1
- 101100078144 Mus musculus Msrb1 gene Proteins 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 238000007531 graphite casting Methods 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The present invention relates to a special thermal-insulation annealing technology and a device for preparing fusion cast alpha-betaAl2O3 refractory materials. The technology has the characteristics of moulding with boxes in production, no demoulding, and cooling to the room temperature in a special thermal-insulation system. The thermal-insulation annealing device is composed of a cover plate (1), an outer shell (2), a moulding nozzle (3), a thermal-insulation medium of side walls (4), a mould (6), a medium plate (7), an inner thermal-insulation cavity (8), a movable discharge opening (9), a bottom thermal-insulation medium (10) and a backing board (11). The finished products of the refractory materials prepared from refractory inorganic materials used as model have no crack on external appearance, or the cracks is within the range permitted by the standard. The present invention has the advantages of convenient technology, strong adaptability, little environmental pollution, and energy saving, and the present invention can be matched with three-phase electric arc furnace with different volumes for mass production.
Description
The present invention relates to castable refractory manufacturing process field, the founding alpha-beta Al that adopts Technology of the present invention to make
2O
3Refractory materials is the supporting furnace building materials of the indispensable top grade in position such as glass melter cooling pool wall, shop fixtures, runner, chute such as building materials, light industry, electronics, medicine.
Founding alpha-beta Al
2O
3Refractory materials is with commercial alumina (α-Al
2O
3, γ-Al
2O
3Or the raw material of two kinds of crystal formations mixes according to a certain percentage) be main raw material, add a spot of calcined soda for industry, quartz sand composition admixtion, form the homogeneous liquation through three-phawse arc furnace high-temperature fusion (2100-2300 ℃), in again that its casting is the predetermined model, the refractory product that process annealing rationally forms.Because alpha-beta Al
2O
3Founding α-Al in the goods
2O
3Big (α=7.2 * 10 of thermal expansivity
-620～1000 ℃), feed liquid crystallization range narrow (100～150 ℃), and goods itself contain few glassy phase, in addition because of foundry goods geometrical shape difference, casting each face thermal capacity of back and rate of heat release difference, the foundry goods after the casting exist bigger internal structure stress and how much temperature stresses.In the process of cooling, foundry goods is reduced to any temperature range below 100 ℃ from about 1950 ℃ high temperature, when its stress, strain value surpass the breakdown point value that foundry goods at that time forms, will ftracture and causes waste product.Therefore, at founding alpha-beta Al
2O
3In the refractory materials whole manufacturing process, the reasonable annealing process that eliminates stress is the key problem in technology that guarantees casting quality and qualification rate.The present invention adopts special insulation annealing technological measure, has made inner quality and has surpassed China JC494-92 standard-required, and qualification rate reaches the founding alpha-beta Al more than 80%
2O
3Fire resistive material product.
Before the present invention, there are four companies of 3 countries can produce this kind melt-cast products in batches in the world, they are the SEPR company of France, the card Blanc Dan Mu company of the U.S., the Toshiba and the rising sun pin company of Japan, according to 1993 the 7th heavily rich " founding alpha-beta Al that write articles of phase Xiong Cang of Japan's " refractory body "
2O
3Refractory materials crystallization and rerum natura " the middle introduction, " the alumina series melt material is made mold with graphite,, promptly puts into lagging material after the demoulding of casting and slowly cools to normal temperature because thermal shocking produces be full of cracks for preventing foundry goods ".Introduction when have an informal discussion according to the rising sun pin company technology of coming to China in the back, lagging material is the commercial alumina powder.The used graphite jig of this kind processing method needs to carry out than complicated mechanical processing according to brick type difference, and costs an arm and a leg.Graphite jig must be peeled off the back after the casting and put into the commercial alumina medium cool under the high temperature naked state, the mechanization degree of operating process be required high, and exist high ambient temperature, aluminum oxide powder such as easily flies upward at shortcoming.
Domestic by China Building Materials Academy's tackling of key scientific and technical problems, succeed in developing electric furnace and forced the annealed processing method, be about to put into electric furnace immediately artificially at extraneous supply heat after the foundry goods demoulding, the curve that cools in electric furnace according to the rules of foundry goods is carried out, can make indehiscent complete foundry goods, bulk article has been thrown in the actual use of domestic and international segment glass melting furnaces, but it is arduouser that this kind processing method exists the high temperature foundry goods time stripping mould of going into stove and loading piled up operational condition, weakness such as consumed power.
The technology that the present invention can overcome above-mentioned processing method existence is complicated, the manufacturing cost height, and operational condition is relatively poor, weakness such as consumed power.
The objective of the invention is to utilize the heat of foundry goods self, take special measure and form a kind of founding alpha-beta Al that satisfies
2O
3The goods processing requirement that cools, again can with the be complementary Technology of large-scale production of any tonnage melting unit.Its low cost of manufacture, operating environment is improved, save energy, the inner quality of product satisfies above China JC494-92 target level of product quality, and qualification rate reaches special insulation annealing technology technology and the device thereof more than 80%.
Accompanying drawing one is production founding alpha-beta Al
2O
3The process flow sheet of refractory materials.
Accompanying drawing two is production alpha-beta Al of the present invention
2O
3The insulation annealing device of brick.
Shown in accompanying drawing one, this insulation annealing device is by cover plate 1, shell 2, casting nozzle 3, side Wall thermal insulation medium 4, foundry goods 5, mold 6, dielectric-slab 7, insulation inner chamber 8, activity discharging The formations such as mouth 9, bottom thermal insulation medium 10, backing plate 11. Wherein, shell 2 (the A3 steel plate, Angle steel etc., its specific performance will be asked for an interview to the 10th page 4 sections) on be stamped cover plate 1 (lightweight be tabular Or fibrofelt class insulation material, its specific performance will be asked for an interview to the 9th page of (3) money), shell 2 In be lined with sidewall thermal insulation medium 4 (lightweight tabular or fibrofelt class insulation material or unsetting ball Shape thermal insulation mediums etc., the 9th page (2), (3) money are seen in its specific requirement), be attached thereto and connect For the insulation inner chamber 8 (in fill out unsetting thermal insulation medium etc., the 9th page (2) are seen in its specific requirement Money), the heat insulation cavity bottom is lined with bottom thermal insulation medium 10 (the tabular or fibrofelt class guarantor of lightweight Adiabator, its specific performance will be asked for an interview to the 9th page of (3) money), outer casing bottom arranges activity and goes out The material valve, (magnesia mould or its specific performance of corundum sand mo(u)ld will be asked for an interview to the 7th page 1 to mold 6 among the figure Money) top is provided with casting nozzle 3, and whole mold 6 is placed insulation inner chamber 8, four of mold Wall and bottom add one deck dielectric-slab 7, and (setting block insulation medium or unsetting spherical insulation are situated between Matter etc., its specific requirement are seen the 9th page (1), (2) money), it is (fixed that the bottom is provided with backing plate 11 Shape block insulation medium or unsetting spherical thermal insulation medium etc., its specific requirement is seen the 9th page (1), (2) money).
Can be constituted by the mold 6 more than 1 or 1 in the device of the present invention, can Produce some bricks.
Technical process key link of the present invention is to make mold in accordance with regulations, and according to brick geometrical dimension difference, utilize balanced radiating principle to optimize the casting mold combining packing, according to the different insulation cans that use different structure of required thermal insulation medium thickness, adopt single or multi-layer heat preserving combination of media according to different brick type needs.In addition, should consider the insulation measure of quick heat radiating for the foundry goods bottom.
Main body of the present invention is founding alpha-beta Al
2O
3The insulation annealing processing method of refractory materials.The key of its technical scheme is to adopt non-graphite casting die, promptly form rational gradation composition with the non-metallic particle material, add a certain proportion of caking agent (as water glass, other inorganic gel materials or organism as wedding agent), make combination or whole mold high temperature resistant and that heat conductivility is good; Adopt the multilayer composite heat insulating material as thermal insulation medium; Before the casting mold and thermal insulation medium are required to assemble in irony (skin) insulation can in accordance with regulations: the casting of band case, the not demoulding after the casting, insulation annealing is cooled to normal temperature.
The main points of technical solution of the present invention and have related parameter as follows:
1: molding material and requirement thereof:
A: quartzy sand mo(u)ld
△ granularity: 20～80 orders
△ Chemical Composition: SiO
2Content 〉=98.5%
△ mold plate or non-detachable mold wall thickness: 20～40mm
B: the compound mold of quartz sand-emergy
△ granularity: quartz sand 20～40 orders
Emergy 20～40 orders
△ Chemical Composition: quartz sand SiO
2Content 〉=98.5%
Emergy Al
2O
3Content 〉=99.0%
△ mold plate or non-detachable mold wall thickness: 20～40mm wherein, emergy 5～15mm,
Quartz sand 15～25mm emergy is as the internal layer that directly contacts the casting feed liquid
The type body.
C: emergy or founding Al
2O
3Series grog mold
△ granularity: 10～80 orders
△ Chemical Composition: Al
2O
393～95%
SiO
2≤2.0％
Na
2O?3.50～4.30％
△ mold plate or non-detachable mold wall thickness: 15～40mm
D: magnesia mold
Adopt electric smelting or calcination magnesia as gang form or whole mold.
△ granularity: 20～40 orders or 0～1mm system material
△ Chemical Composition: MgO content 〉=94.0%
△ mold plate or non-detachable mold wall thickness: 15～40mm
2: wedding agent:
A: water glass (Na
2OnSiO
2)
Modulus 2.6～2.8 proportions 1.3～1.5 add-ons 5.5～15%
B: aluminum phosphate (AlPO
3)
Proportion 1.3～1.5 PH0.8～1.0 add-ons 5.5～15%
C: organic bond
Thermoset phenolic resin:
Density 1.20～1.24g/cm
3Viscosity 45～90pas add-on 5.5～15%
3: thermal insulation medium material and requirement thereof:
The technology of the present invention key is except selecting best molding material, and of paramount importance being selected and adopted rational thermal insulation medium, can adopt one or more thermal insulation medium compound insulation construction array configurations according to arts demand.Dual mode can be succeedd on insulation annealing technology.Its thermal insulation medium should possess following characteristic:
A: high temperature resistant
B: low heat conductivity
C: should be easy to assembling, recirculation is used as far as possible.
D: free from environmental pollution, compliance with environmental protection requirements.
Thermal insulation medium kind and technical parameter:
(1) the block thermal insulation medium of finalizing the design
Adopt lightweight corundum brick, Al
2O
3Technical features such as hollow ball brick, light weeight alumina brick, diatomite insulating block, hard calcium silicate board are at the light thermal-insulation thermal insulation material of above claimed range.
(2) unsetting thermal insulation medium
Adopt Al
2O
3Hollow ball, Al
2O
3-SiO
2Be the unsetting thermal insulation mediums of technical features such as hollow ball, vermiculite, diatomite, pearlstone at above claimed range.
(3) fiber or fibrefelt class thermal insulation medium
4: insulation annealing tank material and structure
Insulation can adopts the plain carbon stool plate, and (thickness is 3～8mm) to make wallboard, and (framework is made in 15 * 15mm～45 * 45mm) to angle steel, and its body structure size dimension should be determined according to casting dimension and required thermal insulation medium thickness specific design.Usually required thermal insulation medium thickness is 100～400mm around the foundry goods.
5: the modes of emplacement of foundry goods in insulation can
Use founding alpha-beta Al in the glass melter
2O
3Refractory materials uses the position difference according to it, and the brick molded dimension has than big difference.Since brick material geometrical shape difference, its different brick types or same brick type different surfaces accumulation of heat difference, and rate of heat release is also made a world of difference.Therefore, should take into full account brick type geometric features, design the spacing distance and the putting position of same insulation can medium casting, can one the case put a foundry goods, also can one the case put a plurality of foundry goods, carry out appropriate design according to calculating according to balanced radiating principle.
Further specify the present invention below in conjunction with example
Brick molded dimension: 200 * 400 * 450mm (high * wide * long)
Mold: founding Al
2O
3Series grog combination template
Granularity: 80 orders
Wedding agent: water glass (Na
2O.nSiO
2)
Modulus 2.8 proportions 1.4 add-ons 8%
△ thermal insulation medium: Al
2O
3-SiO
2Be that hollow ball-hard calcium silicate board is compound
Thermal insulation medium thickness: end face: 150mm side: 180mm
Adopt the hard calcium silicate board around the outermost layer: thickness 50mm
The △ aligning method: four block casting parts are intersecting parallels and closely arrange in insulation can.
△ is incubated casing:
Material: A3 steel plate δ=5mm
Framework angle steel 25 * 25mm
Box sizes: 1500 * 1800mm (long * wide)
Operation steps:
To stipulate particulate founding Al earlier
2O
3The water glass of grog and regulation ratio stirs at mixing machine, this compound of filling in model, make the gang form of specified dimension with concrete vibrating mode, gang form is delivered to the far infrared drying kiln, under 150～250 ℃ of temperature condition,, promptly become the combination mold plate that meets processing requirement in dry 2.5～3 hours.
According to foundry goods geometrical shape difference, consider factors such as balanced heat radiation and heat complementation, determine foundry goods disposing way in insulation can, gang form is pressed design requirements in advance, in insulation can, assemble and put, attenuate thermal insulation layer and certain thickness quartz sand template are considered in the insulation can bottom, and (40～50mm) place mats are so that quick, Homogeneouslly-radiating.Combination mold plate is placed the hard calcium silicate board all around after assembling and finishing in insulation can, add Al then
2O
3-SiO
2Be the hollow ball thermal insulation medium, the insulation can of having assembled is cast before delivering to three-phawse arc furnace with crane or rail mounted casting car.The casting foundry goods that finishes is not chosen casting pressing port, adds Al on request
2O
3-SiO
2Be that hollow ball covers the hard calcium silicate board again.Be placed on the cooling of regulation place and reduce to normal temperature.
The present invention has following advantage:
1: can form large-scale production with the three-phawse arc furnace coupling of any tonnage.
2: the insulation annealing technology of formation and technology are fit to nearly all founding alpha-beta Al2O
3Anti-The annealing of fire preparing product foundry goods can make inherent quality and satisfy large-scale float glass furnace, video picture The key of pipe glass melter, high-grade light industry packing glass melter, instrument, medical glass melter Position brickwork material. Products appearance flawless or crackle are produced within the standard allowed band Qualification rate can reach more than 80%.
3: the molding material that adopts, thermal insulation medium, specific bin body structure and foundry goods are put The formed insulation annealing technology of mode has simple process, cheap for manufacturing cost, operation The characteristics such as environment and condition are good, environmental pollution is little, energy savings.
4: adopt the casting of band case, inorganic non-metallic particle or block of material, can be easily real Existing mechanized continuous productive process.
Claims (12)
1, a kind of founding alpha-beta Al
2O
3The insulation annealing technology of refractory materials is characterized in that: before the casting, mold and thermal insulation medium assembled in insulation can, is with the case casting then, and the not demoulding after the casting, insulation annealing is cooled to normal temperature.
2, a kind of insulation annealing device that is used for the described insulation annealing technology of claim 1 is characterized in that:
Described device is by cover plate (1), shell (2), casting nozzle (3), sidewall thermal insulation medium (4), mold (6), dielectric-slab (7), insulation inner chamber (8), movable discharge port (9), bottom thermal insulation medium (10), backing plate (11) constitutes, wherein be stamped cover plate (1) on the shell (2), shell (2) inwall is lined with sidewall thermal insulation medium (4), the inboard of shell (2) bottom is lined with bottom thermal insulation medium (10), the space that cover plate (1) and sidewall thermal insulation medium (4) and bottom thermal insulation medium (10) are contained is insulation inner chamber (8), be filled with tabular or unsetting thermal insulation medium in the insulation inner chamber (8), mold (6) is positioned at insulation inner chamber (8), and be among the containing of the thermal insulation medium of filling in the insulation inner chamber (8), the appearance of mold (6) is compounded with dielectric-slab (7), the top of mold (6) has casting nozzle (3), the bottom of dielectric-slab (7) is lined with backing plate (11), and the bottom of shell (2) has movable discharge port (9); Described shell (2) is made of the angle steel of carbon steel sheet and 15 * 15mm-45 * 45mm.
3, insulation annealing device according to claim 2 is characterized in that: described cover plate (1) is thermal conductivity 0.058w/m ℃, volume density＜170kg/m
3, maximum operation (service) temperature 〉=1000 ℃ hard calcium silicate board or thermal conductivity 0.090w/m ℃, tap density 0.13-0.25kg/cm
3, maximum operation (service) temperature 〉=1000 ℃ alumina silicate fiber felt.
4, insulation annealing device according to claim 2 is characterized in that: the identical or thermal conductivity of the material of described sidewall thermal insulation medium (4) and cover plate (1) is that 0.135w/m ℃, density are 0.55g/cm
3, refractoriness 〉=1700 ℃ SiO
2-Al
2O
3Hollow ball.
5, insulation annealing device according to claim 2 is characterized in that: described dielectric-slab (7) is that thermal conductivity is that 0.58-0.64w/m ℃, volume density are 0.8-1.35g/cm
3, maximum operation (service) temperature 〉=1750 ℃ lightweight corundum brick or thermal conductivity 0.78w/m ℃, volume density 1.18g/cm
3, maximum operation (service) temperature 〉=1700 ℃ hollow brick; Or thermal conductivity is that 0.135w/m ℃, density are 0.55g/cm
3, refractoriness 〉=1700 ℃ hollow ball.
6, insulation annealing device according to claim 2 is characterized in that: the unsetting spherical thermal insulation medium of filling in the described insulation inner chamber (8) is that thermal conductivity is that 0.135w/m ℃, density are 0.55g/cm
3, refractoriness 〉=1700 ℃ hollow ball.
7, insulation annealing device according to claim 2 is characterized in that: described bottom thermal insulation medium (10) is identical with the material of cover plate (1).
8, insulation annealing device according to claim 2 is characterized in that: described backing plate (11) is that thermal conductivity is that 0.58-0.64w/m ℃, volume density are 0.8-1.35g/cm
3, maximum operation (service) temperature 〉=1750 ℃ lightweight corundum brick or thermal conductivity 0.78w/m ℃, volume density 1.18g/cm
3, maximum operation (service) temperature 〉=1700 ℃ hollow ball brick; Or thermal conductivity is that 0.135w/m ℃, density are 0.55g/cm
3, refractoriness 〉=1700 ℃ SiO
2-Al
2O
3Hollow ball.
9, insulation annealing device according to claim 2 is characterized in that: the mold (6) in the described insulation inner chamber (8) is the permutation and combination more than 1 or 1.
10, according to the insulation annealing device of claim 2-9, it is characterized in that: described mold (6) is quartz sand-emergy composite mold, and wherein the granularity of quartz sand is the 20-80 order, and the granularity of emergy is the 20-40 order, SiO in the quartz sand
2Content 〉=98.5%, the Al in the emergy
2O
3Content 〉=99.0%, mold plate or whole wall thickness 15-80mm, used wedding agent is a water glass, modulus is 2.6-2.8, proportion 1.3-1.5g/cm
3, add-on 5.5-15.0%.
11, according to the insulation annealing device of claim 2-9, it is characterized in that: described mold (6) is Al
2O
3Series grog mold, its granularity is the 10-80 order, SiO
2Content≤2.0%, Al
2O
3Content be 93-95%, NaO
2Be 3.5-4.3%, mold plate or non-detachable mold wall thickness 15-40mm, used wedding agent is a water glass, modulus is 2.6-2.8, proportion 1.3-1.5, add-on 5.0-15.0%.
12, according to the insulation annealing device of claim 2-9, it is characterized in that: described mold (6) is the magnesia mold, adopt electric smelting or grain magnesite as gang form or whole mold, the granularity of used magnesia be the 20-40 order or≤the system material of 1mm, MgO content 〉=94.0% in the magnesia, mold plate or non-detachable mold wall thickness 20-40mm, used wedding agent is a water glass, modulus is 2.6-2.8, proportion 1.3-1.5, add-on 5.0-15.0%.
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| CN98103494A CN1084312C (en) | 1998-08-06 | 1998-08-06 | Insulation annealing technology and device for casting alpha-beta A1203 refractory material |
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| CN98103494A CN1084312C (en) | 1998-08-06 | 1998-08-06 | Insulation annealing technology and device for casting alpha-beta A1203 refractory material |
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| CN1210837A CN1210837A (en) | 1999-03-17 |
| CN1084312C true CN1084312C (en) | 2002-05-08 |
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| CN102060552B (en) * | 2010-11-24 | 2013-08-07 | 淄博旭硝子刚玉材料有限公司 | Box-type heat insulating and annealing way of aluminum oxide electric smelting brick |
| CN102030553B (en) * | 2010-11-24 | 2013-04-10 | 淄博旭硝子刚玉材料有限公司 | Box type heat preservation annealing manner for fused zircon corundum brick |
| CN102773906B (en) * | 2012-07-09 | 2014-10-08 | 郑州东方安彩耐火材料有限公司 | Corundum sand mold for producing fused-cast alumina refractory materials and production technique thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043489A (en) * | 1988-12-21 | 1990-07-04 | 中国科学院地质研究所矿物材料试验基地 | Complex phase corundum and method for making thereof |
| CN1151389A (en) * | 1994-12-22 | 1997-06-11 | 沈阳耐火材料厂 | Oxydation process and tech. for making casted Zr corindon bricks |
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1998
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043489A (en) * | 1988-12-21 | 1990-07-04 | 中国科学院地质研究所矿物材料试验基地 | Complex phase corundum and method for making thereof |
| CN1151389A (en) * | 1994-12-22 | 1997-06-11 | 沈阳耐火材料厂 | Oxydation process and tech. for making casted Zr corindon bricks |
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