CN108300850A - A kind of heating furnace with it is compound go out steel stove a heatable brick bed structure and its construction method - Google Patents
A kind of heating furnace with it is compound go out steel stove a heatable brick bed structure and its construction method Download PDFInfo
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- CN108300850A CN108300850A CN201711490811.4A CN201711490811A CN108300850A CN 108300850 A CN108300850 A CN 108300850A CN 201711490811 A CN201711490811 A CN 201711490811A CN 108300850 A CN108300850 A CN 108300850A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure and its construction method, including wearing layer and the basal layer in wearing layer lower layer is set, the wearing layer is built by laying bricks or stones by zircon corundum brick and chrome corundum brick are alternate, and the brick number ratio of the chrome corundum brick and zircon corundum brick is 8：2, the basal layer is made by high-strength wear-resistant pouring material.Stove a heatable brick bed structure disclosed in this invention has materials and the preferable rapid heat cycle performance characteristics such as heat-resisting quantity, highly corrosion resistant, high wear resistance, the erosion of high resistance to slag, high thermal shock resistance, the low creep properties of high temperature, high yield end can preferably be met into the basic demand for measuring heating furnace, and the construction method of the stove a heatable brick bed structure has the advantages that simple in structure, easy for construction, dismounting is simple, maintenance cost is relatively low.
Description
Technical field
The present invention relates to a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure and its construction method, be applicable in heating furnace structure material
Technical field.
Background technology
Hold that go out pusher-type furnace into side be the current most important Thermal Equipment of steel production enterprise steel rolling process link.It should
Heating furnace produces for continous way, this proposes higher requirement to capabilities of refractory materials.Especially in tapping side, go out steel stove a heatable brick bed knot
The working environment of structure material is particularly harsh, it is desirable that material will have both heat-resisting quantity, highly corrosion resistant, high wear resistance, highly resistance simultaneously
Material properties and the preferable rapid heat cycle performances such as slag erosion, high thermal shock resistance, the low creep properties of high temperature.Traditional tapping
Wing furnace a heatable brick bed structure generally uses heat-resistance and wear-resistance steel, common chrome corundum brick, high-strength wear-resistant pouring material etc. to be used as stove a heatable brick bed material.But with
The type of furnace for heating furnace is constantly progressive, and the type of furnace constantly increases；Billet bloom size is continuously increased, and steel billet weight constantly increases weight, traditional
Common stove a heatable brick bed structure and application material can no longer meet the requirement of heating furnace.
Go out the problems of pusher-type heating-furnace steel-tapping stove a heatable brick bed structure for holding into side, there are enterprise and research institution in the country
A large amount of research has been carried out, has proposed the achievement in research of oneself from Material Field and stove a heatable brick bed construction applications respectively.Wherein, Chinese invention
Patent CN103896608A disclose " a kind of chromium steel jade titanium brick and its production method, the invention from material angle, by
On the basis of the formula of traditional chromium diamond spar brick, titanium dioxide is added, it is therefore intended that improve the resistance to slag erosion performance and heat of material itself
Shake stability.But the invention does not consider the service life of material from wear-resisting property and structural point.Meanwhile there is steel in the country
Iron enterprise proposes a kind of " the compound lander of half hot plate of heat resisting cast steel and cast iron water-cooling version ", and this lander makes as stove a heatable brick bed
With, have last a long time, replaces it is convenient, safeguard the advantages such as simply, but the enterprise is during the use in later stage, it is again seen that
That there are overall weights is heavier for the structure, cost is higher, it is inconsistent to be worn between upper and lower structures, half hot plate unstable quality etc.
Many defects.It is not suitable for large-scale promotion application.Therefore, state inner end goes out pusher-type heating-furnace steel-tapping stove a heatable brick bed structure master into side
Will or to have based on the refractory material of high-resistance wear-resistant performance, main research direction or it is compound go out steel construction and compound
Performance refractory material.
Invention content
The present invention provide a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure, which has heat-resisting quantity, high corrosion resistant
Corrosion, high wear resistance, the erosion of high resistance to slag, high thermal shock resistance, the low creep properties of high temperature and preferable rapid heat cycle performance etc.
Material property.
The present invention solves above-mentioned technical problem and adopts the technical scheme that：A kind of heating furnace with it is compound go out steel stove a heatable brick bed structure,
Including wearing layer and the basal layer in wearing layer lower layer is set, the wearing layer by zircon corundum brick and alternate build by laying bricks or stones of chrome corundum brick and
At the brick number ratio of the chrome corundum brick and zircon corundum brick is 8：2, the basal layer is made by high-strength wear-resistant pouring material.
Further, the stove a heatable brick bed structure is located at the tapping side of heating furnace, and overall width is 500-700mm, and length is
7000-10000mm, thickness are 1000-1200mm, and operating temperature range is 1150-1450 DEG C, and bulk density is 2.4-
4.1cm3/ g, Mohs' hardness are 6.5-9.0, and wear extent is 0.05-0.1 ㎡/kg.
Further, the wear-resisting layer thickness is 260-320 ㎜, and length is 7000-10000 ㎜, operating temperature range
It it is 1150-1450 DEG C, bulk density is 3.2-4.1cm3/ g, Mohs' hardness are 8.5-9.0, and wear extent is 0.05 ㎡/kg,
Compression strength is 140-200Mpa.
Further, the base layer thickness is 680-980 ㎜, and length is 7000-10000 ㎜, tolerable temperature range
It it is 650-950 DEG C, bulk density is 2.5-2.7cm3/ g, Mohs' hardness are 5.5-6.0, and wear extent is 0.08 ㎡/kg, is resisted
Compressive Strength is 50-70Mpa.
Further, the zircon corundum brick is electric smelting-fused cast zirconia-alumina brick, which uses contraction joint-free casting technology
It makes, is mainly uniformly mixed by alumina powder, zirconia powder and silica, it is cooling in injection model after being melted using electric smelter
It forms.
Further, the bulk density of the zircon corundum brick is 3.75-4.1cm3/ g, Mohs' hardness >=9.0, wear extent
In 0.05 ㎡/kg, compression strength is 180-200Mpa.
Further, the chrome corundum brick is electric smelting-reheating chrome corundum brick, and the chrome corundum brick is white with α-al2o3powder, electric smelting
Corundum and fused brown corundum are base stock, and chromium oxide powder and bauxite fine powder is added, is pressed by 1200 tons of press
Type, then through high temperature 1780 DEG C fire.
Further, the chrome corundum brick bulk density is 3.2-3.4cm3/ g, Mohs' hardness are 8.5-9.0, abrasion
For amount in 0.05 ㎡/kg, compression strength is 140-160Mpa.
Further, the high-strength wear-resistant pouring material is by high-strength picrochromite object aggregate, bauxite powder and high molecular polymerization
Object forms, 5-8 ㎜ of grain size of the high-strength picrochromite object aggregate, the grain size 30-50 mesh of the bauxite powder.
The present invention also provides a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure construction method, the construction party of the stove a heatable brick bed structure
Method is with cost of labor is low, administration fee is low, work progress is simple and fast, construction material is easy to buying, maintenance cost is more low
Comprehensive advantage.
The present invention solves above-mentioned technical problem and adopts the technical scheme that：A kind of heating furnace with it is compound go out steel stove a heatable brick bed structure
Construction method mainly includes the following steps that：
(1) one-piece casting：Layer is bottom based on heating-furnace base concrete, will with heating furnace kiln wall for lateral mold
High-strength wear-resistant pouring material carries out the one-piece casting of basal layer；
(2) insulated curing：After the completion of pouring, insulated curing is carried out to basal layer, curing temperature is 5-30 DEG C, when maintenance
Between be 10-15 days；
(3) horizontal adjustment：After basal layer hardening, reuses high-strength wear-resistant pouring material micro mist and carry out horizontal adjustment, make
Obtain basal layer upper surface whole height difference≤1mm；
(4) wearing layer is built by laying bricks or stones：Zircon corundum brick and chrome corundum brick are built by laying bricks or stones on basal layer, wearing layer is formed.
Above-mentioned technical proposal is used, stove a heatable brick bed structure disclosed in this invention has heat-resisting quantity, highly corrosion resistant, height resistance to
Materials and the preferable rapid heat cycle performance characteristics such as abrasion, the erosion of high resistance to slag, high thermal shock resistance, the low creep properties of high temperature, energy
It is enough preferably to meet high yield end into the basic demand for measuring heating furnace.The service life of the stove a heatable brick bed structure is far above existing any
Go out steel stove a heatable brick bed structure, it is 18-24 months to design basic service life.Particularly, the basal layer of the stove a heatable brick bed structure is permanent
Layer, normal conditions need not be replaced.And the replacement of abrasive brick only needs to lower tapping hole side, by pusher by zircon corundum brick
Release with chromium steel jade brick, when reinstalling, two kinds of bricks be pushed in turn successively, have it is simple in structure, easy for construction,
The advantage that dismounting is simple, maintenance cost is relatively low.
Description of the drawings
A kind of heating furnace of Fig. 1 present invention with it is compound go out steel stove a heatable brick bed structure main view sectional view；
A kind of heating furnace of Fig. 2 present invention with it is compound go out steel stove a heatable brick bed structure top plan view；
A kind of heating furnace of Fig. 3 present invention with it is compound go out steel stove a heatable brick bed structure side cutaway view；
In figure：1. wearing layer, 2. basal layers, 3. zircon corundum bricks, 4. chrome corundum bricks, 5. steel billets, 6. tapping holes, 7, heating furnace
Kiln wall.
Specific implementation mode
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.
Embodiment 1：
As shown in Figs. 1-3, a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure, including wearing layer 1 and be arranged under wearing layer 1
The basal layer 2 of layer, the wearing layer 1 is by zircon corundum brick 3 and chrome corundum brick 4 is alternate builds by laying bricks or stones, and the chrome corundum brick 3 and zirconium are rigid
The brick number ratio of beautiful brick 4 is 8：2, the basal layer 2 is made by high-strength wear-resistant pouring material.
The stove a heatable brick bed structure is located at the tapping side of heating furnace, and overall width is 500-700mm, and length is 7000-
10000mm, thickness are 1000-1200mm, and operating temperature range is 1150-1450 DEG C, and bulk density is 2.4-4.1cm3/
G, Mohs' hardness are 6.5-9.0, and wear extent is 0.05-0.1 ㎡/kg.
1 thickness of the wearing layer is 260-320 ㎜, and length is 7000-10000 ㎜, and operating temperature range is 1150-
1450 DEG C, bulk density is 3.2-4.1cm3/ g, Mohs' hardness are 8.5-9.0, and wear extent is 0.05 ㎡/kg, compression strength
For 140-200Mpa.
Specifically, wearing layer 1 was steel layer, the steel billet 5 of all heating furnaces is laterally included in the layer, then axial by moving back work
Furnace body is released through the layer, which is in direct contact steel billet 5, has the fundamental characteristics such as high temperature and pressure high resistance against wear.Wearing layer 1 is answered slightly higher
In 6 level height of tapping hole, difference in height is advisable in 3-5mm.
2 thickness of the basal layer is 680-980 ㎜, and length is 7000-10000 ㎜, tolerable temperature ranging from 650-
950 DEG C, bulk density is 2.5-2.7cm3/ g, Mohs' hardness are 5.5-6.0, and wear extent is 0.08 ㎡/kg, and compression strength is
50—70Mpa。
Specifically, basal layer 2 is structure supporting course, this layer needs bear the weight summation from steel billet 5 and wearing layer 2,
Have high compressive strength and performance is compared in relatively low linear contraction.
The zircon corundum brick 3 is electric smelting-fused cast zirconia-alumina brick, which is made of contraction joint-free casting technology, main
It to be uniformly mixed by alumina powder, zirconia powder and silica, cooling forms in injection model after being melted using electric smelter.
Zircon corundum brick 3 is a kind of white solid refractory material, lithofacies structure by corundum and the oblique stone of zirconium eutectoid and glass
The eutectoid of the oblique stone phase of glass phase composition, i.e. corundum phase and zirconium, glass are mutually filled between their crystallization.The brick consistency is very
Height, surface are in glass phase, and friction coefficient is relatively low, it is main serve help it is sliding.
The bulk density of the zircon corundum brick 3 is 3.75-4.1cm3/ g, Mohs' hardness >=9.0, wear extent 0.05 ㎡/
Kg, compression strength are 180-200Mpa.
The chrome corundum brick 4 be electric smelting-reheating chrome corundum brick, the chrome corundum brick 4 with α-al2o3powder, fused white corundum and
Fused brown corundum is base stock, and chromium oxide powder and bauxite fine powder is added, by 1200 tons of press compression mouldings, then passes through
1780 DEG C of high temperature is fired.
Chrome corundum brick 4 is the dark purple solid refractory of brick body, and lithofacies structure is total to by corundum and chromium oxide powder
Analyse body and glass phase composition, the i.e. eutectoid of corundum phase and chromium oxide powder phase.The brick consistency is higher, main in this stove a heatable brick bed structure
Serve wear-resistant.
4 bulk density of the chrome corundum brick is 3.2-3.4cm3/ g, Mohs' hardness are 8.5-9.0, and wear extent is 0.05
㎡/kg, compression strength are 140-160Mpa.
The high-strength wear-resistant pouring material is made of high-strength picrochromite object aggregate, bauxite powder and high molecular polymer, institute
State 5-8 ㎜ of grain size of high-strength picrochromite object aggregate, the grain size 30-50 mesh of the bauxite powder.The high-strength wear-resistant pouring material has
There is wear-resisting loss reduction, intensity is high, shape is arbitrarily controllable, globality is strong, handling are simple, construction is simple, has good workability
Performance.
Specifically, high molecular polymer is phosphate.
Embodiment 2：
A kind of heating furnace with it is compound go out steel stove a heatable brick bed structure construction method, mainly include the following steps that：
(1) one-piece casting：Using heating-furnace base concrete the bottom of as, with heating furnace kiln wall 7 for lateral mold, by high-strength wearable
Castable carries out the one-piece casting of basal layer；
(2) insulated curing：After the completion of pouring, insulated curing is carried out to basal layer 2, curing temperature is 5-30 DEG C, when maintenance
Between be 10-15 days；
(3) horizontal adjustment：After the hardening of basal layer 2, reuses high-strength wear-resistant pouring material micro mist and carry out horizontal adjustment, make
Obtain 2 upper surface whole height difference of basal layer≤1mm；
(4) wearing layer 1 is built by laying bricks or stones：Zircon corundum brick 3 and chrome corundum brick 4 are built by laying bricks or stones on basal layer 2, wearing layer 1 is formed.
In step (3), high-strength wear-resistant pouring material micro mist includes the silicon powder and grain size 200-300 of 100-150 mesh of grain size
Purpose alumina powder.
In step (4), method of being built between wearing layer 1 is used is that dry pendulum is built by laying bricks or stones, does not open refractory wass, wearing layer 1 is with chromium
Based on corundum brick 4, supplemented by zircon corundum brick 3, the brick number ratio of chrome corundum brick 4 and zircon corundum brick 3 is 8：2, wherein zircon corundum brick 3 divides
It opens and puts, overall span is greater than or equal to 5 length of steel billet.
Particularly, in stove a heatable brick bed structure length direction midline position, 1-2 blocks of chrome corundum bricks 4 are built by laying bricks or stones.
Particularly, it is chrome corundum brick 4 that wearing layer 1, which faces 1-2 pieces of tapping hole,.
Embodiment 3：
It is longitudinal with the width direction of steel billet 5, take the length direction of steel billet 5 as axial, stove a heatable brick bed structure itself length and width dimensions
It is all higher than 5 size of steel billet, it is excellent to produce 140 × 140 × 6000 ㎜ carbon steel square billet heating furnaces as objective for implementation in the present embodiment
It is 1000 ㎜ (height) × 580 ㎜ (width) × 7000 ㎜ (length) to select stove a heatable brick bed structure own dimensions.
In the present embodiment, preferably 1 thickness of stove a heatable brick bed structure wearing layer is 280 ㎜, and 22 thickness of basal layer is 720 ㎜, and stove a heatable brick bed is total
Thickness is equal to 1000 ㎜ of stove a heatable brick bed total height.Wherein wearing layer 1 is that chromium steel jade brick 4 and 3 piecemeal of zircon corundum brick are built by laying bricks or stones, basal layer 2
For high-strength castable one-piece casting.
In the present embodiment, when the carbon steel square billet is to stove a heatable brick bed locations of structures, 5 own temperature of steel billet at 1200 DEG C or so,
Burner hearth environment temperature 3 tolerable temperature of chromium steel jade brick 4 and zircon corundum brick used by 1000 DEG C or more, the present embodiment wearing layer 1
It is that there is the soft energy of good anti-lotus croop property low with high temperature, production requirement can be met completely, be at 1650 DEG C or more
The present embodiment preferred embodiment.
In the present embodiment, the zircon corundum brick 3 of the stove a heatable brick bed structure wearing layer 1 is consistent with chromium steel jade 4 sizes of brick, according to stove a heatable brick bed
Structure own dimensions, the preferably own dimensions of zircon corundum brick 3 and chromium steel jade brick 4 are 280 ㎜ (height) × 580 ㎜ (width) × 348 ㎜
(length), preferably height are equal with the wear-resisting layer thickness of stove a heatable brick bed structure, and width is equal with stove a heatable brick bed structure wearing layer width.It is preferred that fused alumina zirconia
Brick 3 and 4 total quantity of chromium steel jade brick are 20 pieces, 6960 ㎜ of brick body total length.In view of material expands with heat and contract with cold performance, preferably between brick body
Dilatation joint seam is 21, amounts to 40 ㎜, the coefficient of expansion 0.5%, and brick body length and dilatation joint length summation are equal to stove a heatable brick bed structure
Length.
In the present embodiment, the zircon corundum brick 3 and 4 building method of chromium steel jade brick of the stove a heatable brick bed structure wearing layer 1 are two kinds of bricks
Type is separated and is built by laying bricks or stones indirectly, and preferred 3 quantity of zircon corundum brick of this programme embodiment is 6 pieces, and 4 quantity of chromium steel jade brick is 14 pieces.The side of building by laying bricks or stones
Face, it is contemplated that the body of chromium steel jade brick 4 is close smaller, and rapid heat cycle performance is better than chromium steel jade brick 4, and the heating furnace both sides stove gate temperature difference
It is larger, therefore close on stove gate stove a heatable brick bed structure and preferably build chromium steel jade brick 4 by laying bricks or stones with brick, in the present embodiment, from both sides stove gate into stove
700 ㎜ length stove a heatable brick bed structures of center, preferably build 2 pieces of chromium steel jade bricks 4,1400 ㎜ of overall length by laying bricks or stones respectively.Remaining 5600 ㎜ stove a heatable brick bed structures
Length, slightly shorter than 5 length of steel billet preferably build 2 blocks of zircon corundum bricks 3, overall length by laying bricks or stones respectively in its both sides of the edge position and midline position
2100 ㎜ are spent,.Remaining stove a heatable brick bed structure division builds chromium steel jade brick 4 by laying bricks or stones.
In the present embodiment, it is contemplated that 5 size of steel billet is smaller, and lighter in weight and overall cost problem are preferably melted by contraction joint-free
Casting technology makes, and the trade mark is the zircon corundum brick 3 of AZS -36Y, and Mohs' hardness >=9.0, wear extent is 0.05 ㎡/kg, pressure resistance
Degree disclosure satisfy that the needs of 5 long term wear of steel billet 180 or more, but bulk density ratio AZS -41Y is light by 10% or so, tool
There are good economy and low power consuming.
In the present embodiment, it also is contemplated that smaller to 5 size of steel billet, lighter in weight and overall cost problem preferably pass through
1200 tons of press compression mouldings are burnt by 1780 DEG C, and the trade mark is the chromium steel jade brick 4 of GGZ -12, and bulk density exists
3.2cm3/ g or so, for Mohs 8.5 or more, wear extent disclosure satisfy that steel billet 5 in 0.05 ㎡/kg, compression strength 140 or more
The needs of long term wear, but bulk density ratio GGZ -20 is light by 8.5% or so, equally has good economy and low consumption
It can property.
In the present embodiment, in the case where producing 140 square billet, using the close lighter zircon corundum brick 3 of body and chromium steel jade brick 4,
Its overall weight relative reduction 9% or so.But service life is constant, longest service life can reach 24 months or so.
In the present embodiment, the high-strength wear-resistant pouring material used in the stove a heatable brick bed architecture basics layer preferably pours into a mould material granularity formula
For 8 ㎜ of grain size of high-strength picrochromite object aggregate, 150 mesh of grain size, the alumina powder of 30 mesh of grain size of bauxite powder, silicon powder
220 mesh of grain size composition.750 DEG C of its tolerable temperature or more, bulk density is in 2.7cm3/ g or more, Mohs' hardness is on 6.0 left sides
The right side, wear extent is in 0.08 ㎡/kg or so, and compression strength is in 65Mpa or so.
In the present embodiment, the stove a heatable brick bed structure preferably construct basis be hard soil layer or the above concrete layers of label C45,
Wherein hard soil layer base thickness is not less than in 3 meters, and concrete layer base thickness is not less than 1.5 meters.Further, the present embodiment
Preferred embodiment is concrete foundation, and thickness is 1.5 meters.
In the present embodiment, the stove a heatable brick bed structure preferred construction stage, after furnace wall structure and the completion of furnace body foundation,
In this way, furnace wall structure and furnace body foundation structure can be used as and pour bed die and side form uses, without molding again.
In the present embodiment, the preferred construction seasons of stove a heatable brick bed structure are autumn and winter, and dry weather is easy to basal layer hardening,
It is contemplated that winter temperature problem, ranging from 5-30 DEG C of temperature of preferably constructing.
In the present embodiment, the stove a heatable brick bed structure wearing layer is slightly above tapping hole 6, and it is 5 ㎜ to be preferably higher by plus tolerance, and one can
To improve the whole service life of stove a heatable brick bed structure, two carry out basal layer 2 in the case of high temperature and pressure, and it is a degree of heavy to have
Drop, for bulk settling height in 6-8 ㎜ or so, the plus tolerance being higher by just makes up settling height.
Particular embodiments described above, pair present invention solves the technical problem that, technical solution and advantageous effect carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this
Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection domain.
Claims (10)
1. a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：Including wearing layer and it is arranged in wearing layer lower layer
Basal layer, the wearing layer are built by laying bricks or stones by zircon corundum brick and chrome corundum brick are alternate, the brick of the chrome corundum brick and zircon corundum brick
Number ratio is 8：2, the basal layer is made by high-strength wear-resistant pouring material.
2. heating furnace according to claim 1 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The stove a heatable brick bed structure is located at
The tapping side of heating furnace, overall width are 500-700mm, and length is 7000-10000mm, and thickness is 1000-1200mm,
Operating temperature range is 1150-1450 DEG C, and bulk density is 2.4-4.1cm3/ g, Mohs' hardness are 6.5-9.0, wear extent
For 0.05-0.1 ㎡/kg.
3. heating furnace according to claim 1 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The wear-resisting layer thickness is
260-320 ㎜, length are 7000-10000 ㎜, and operating temperature range is 1150-1450 DEG C, and bulk density is 3.2-
4.1cm3/ g, Mohs' hardness are 8.5-9.0, and wear extent is 0.05 ㎡/kg, and compression strength is 140-200Mpa.
4. heating furnace according to claim 1 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The base layer thickness is
680-980 ㎜, length are 7000-10000 ㎜, and ranging from 650-950 DEG C of tolerable temperature, bulk density is 2.5-
2.7cm3/ g, Mohs' hardness are 5.5-6.0, and wear extent is 0.08 ㎡/kg, and compression strength is 50-70Mpa.
5. heating furnace according to claim 1 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The zircon corundum brick is electricity
Molten-fused cast zirconia-alumina brick, which is made of contraction joint-free casting technology, mainly by alumina powder, zirconia powder and two
Silica is uniformly mixed, and cooling forms in injection model after being melted using electric smelter.
6. heating furnace according to claim 5 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The body of the zircon corundum brick
Product density is 3.75-4.1cm3/ g, Mohs' hardness >=9.0, for wear extent in 0.05 ㎡/kg, compression strength is 180-200Mpa.
7. heating furnace according to claim 1 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The chrome corundum brick is electricity
Oxygen is added using α-al2o3powder, fused white corundum and fused brown corundum as base stock in molten-reheating chrome corundum brick, the chrome corundum brick
Change chromium powder and bauxite fine powder, by 1200 tons of press compression mouldings, then through high temperature 1780 DEG C fire.
8. heating furnace according to claim 7 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The chrome corundum brick volume
Density is 3.2-3.4cm3/ g, Mohs' hardness are 8.5-9.0, and for wear extent in 0.05 ㎡/kg, compression strength is 140-
160Mpa。
9. heating furnace according to claim 1 with it is compound go out steel stove a heatable brick bed structure, it is characterised in that：The high-strength wear-resistant pouring
Material is made of high-strength picrochromite object aggregate, bauxite powder and high molecular polymer, the grain size of the high-strength picrochromite object aggregate
5-8 ㎜, the grain size 30-50 mesh of the bauxite powder.
10. a kind of heating furnace with it is compound go out steel stove a heatable brick bed structure construction method, it is characterised in that：It mainly includes the following steps that：
(1) one-piece casting：Layer is bottom based on heating-furnace base concrete, will be high-strength with heating furnace kiln wall for lateral mold
Wear-resistant castable carries out the one-piece casting of basal layer；
(2) insulated curing：After the completion of pouring, insulated curing is carried out to basal layer, curing temperature is 5-30 DEG C, and curing time is
10-15 days；
(3) horizontal adjustment：After basal layer hardening, reuses high-strength wear-resistant pouring material micro mist and carry out horizontal adjustment so that base
Plinth layer upper surface whole height difference≤1mm；
(4) wearing layer is built by laying bricks or stones：Zircon corundum brick and chrome corundum brick are built by laying bricks or stones on basal layer, wearing layer is formed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114853454A (en) * | 2022-05-05 | 2022-08-05 | 宜兴市锅炉密封工程有限公司 | High-strength compact zirconium-chromium corundum brick and preparation method thereof |
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| CN103278015A (en) * | 2013-01-11 | 2013-09-04 | 成都蜀冶新材料有限责任公司 | Integral casting method for stove top refractory lining of hot blast stove |
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| CN114853454A (en) * | 2022-05-05 | 2022-08-05 | 宜兴市锅炉密封工程有限公司 | High-strength compact zirconium-chromium corundum brick and preparation method thereof |
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| CN108300850B (en) | 2019-12-17 |
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