CN108484138A - A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source - Google Patents

A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source Download PDF

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Publication number
CN108484138A
CN108484138A CN201810498614.5A CN201810498614A CN108484138A CN 108484138 A CN108484138 A CN 108484138A CN 201810498614 A CN201810498614 A CN 201810498614A CN 108484138 A CN108484138 A CN 108484138A
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powder
sliding plate
micro mist
carbon source
alumina micro
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彭学峰
郁书中
崔任渠
张小红
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Ruitai Magang New Mstar Technology Ltd
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Ruitai Magang New Mstar Technology Ltd
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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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
    • C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
    • 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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
    • C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/424—Carbon black
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428—Silicon
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

The invention discloses a kind of addition composite alumina micro mist and the sliding plate bricks and preparation method thereof of carbon source, are related to technical field of refractory materials.The raw material of sliding plate brick of the present invention forms and weight percent is：40~50% plate diamond spar particle, 10~20% fused zirconia particle, 5~10% plate diamond spar fine powder, 5~10% fused zirconia fine powder, 10~15% composite alumina micro mist, 0.5~3% crystalline flake graphite, 0.5~3% carbon black, 0.5~5% metallic aluminium powder, 0.5~5% metallic silicon power, 1~4% special additive, is total up to 100%；Additional 4~6% phenolic resin.Above-mentioned raw materials are obtained into finished product sliding plate brick through processes such as powder mixing, mixed grind, molding, heat treatment, firing, digestion carbonization, finishing, inspection and packagings.Addition composite alumina micro mist of the present invention and the sliding plate brick of carbon source, to improve the thermal shock resistance, flushing resistance and erosion-resisting characteristics of sliding plate brick, improve service life by changing the adjustment to alumina powder.

Description

A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source
Technical field
The present invention relates to technical field of refractory materials, are related to large ladle furnace and coverter pig slide plate more particularly to a kind of addition The sliding plate brick and preparation method thereof of composite alumina micro mist and carbon source.
Background technology
Sliding plate brick is aoxidized due to often being washed away by molten steel with high oxidative atmosphere, and frequent rapid heat cycle effect, Sliding plate brick is required extremely harsh.Large ladle furnace sliding plate brick and converter gate valve sliding plate brick are mainly aluminium zirconium carbon materials matter at present, but with It the continuous harsh of smelting condition and to the continuous improvement that steel grade requires, traditional aluminium zirconium carbon materials matter slide plate passes through in use It is poor to be commonly present corrosion resistance, thermal shock resistance is poor, and phenomena such as pressing from both sides steel occurs, and not high using stove number, with external advanced slide plate Supply of material producer compares also, and there is a big difference；Therefore, a new generation's thermal shock resistance, resistance to erosion, erosion-resistant high-performance is researched and developed to slide Plate brick is of great significance.
The common alumina powder of aluminum-zirconium-carbon slide brick usually has common Alpha-alumina micro mist, white fused alumina micro mist etc., single Although the use of alumina powder can improve the high temperature sintering performance of slide plate, different alumina powders its function and effect are not to the utmost It is identical.
Invention content
It is frequently present of that corrosion resistance is poor, thermal shock is stablized in use to solve traditional aluminium zirconium carbon materials matter slide plate Property it is poor, folder steel the problems such as, the present invention provide it is a kind of addition composite alumina micro mist and carbon source sliding plate brick and preparation method thereof, this The sliding plate brick of the addition composite alumina micro mist and carbon source is invented by changing the adjustment to alumina powder, to improve cunning Thermal shock resistance, flushing resistance and the erosion-resisting characteristics of plate brick.
In order to achieve the above purpose, technical scheme is as follows：
The present invention provides a kind of sliding plate brick adding composite alumina micro mist and carbon source, its raw material composition and weight percent Than for：40~50% plate diamond spar particle, 10~20% fused zirconia particle, 5~10% plate diamond spar fine powder, 5 ~10% fused zirconia fine powder, 10~15% composite alumina micro mist, 0.5~3% crystalline flake graphite, 0.5~3% Carbon black, 0.5~5% metallic aluminium powder, 0.5~5% metallic silicon power, 1~4% special additive are total up to 100%；Outside Add 4~6% phenolic resin.
Preferably, the Al of the plate diamond spar particle and plate diamond spar fine powder2O content >=98.5%, pH value are in neutrality, and are had Imitate granularity content >=90%.
Preferably, the Al of the fused zirconia particle and fused zirconia fine powder2O3With ZrO2Content >=98%, simultaneously ZrO2Content >=23%.
Preferably, the composite alumina micro mist includes 1 μm of alumina powder 5~8% and 5 μm of alumina powder 5 ~7%.
Preferably, the granularity of the crystalline flake graphite is 1000 mesh, C content >=96% in the crystalline flake graphite；The metal The granularity of aluminium powder and metallic silicon power is 240 mesh, Al content >=99% in the metallic aluminium powder, Si contents in the metallic silicon power >= 97%.
The present invention also provides the preparation methods of a kind of above-mentioned addition composite alumina micro mist and the sliding plate brick of carbon source, by following Step specifically carries out：
(1) powder mixes：By 5~10% plate diamond spar fine powder, 5~10% fused zirconia fine powder, 10~15% Composite alumina micro mist, 0.5~3% crystalline flake graphite, 0.5~3% carbon black, 0.5~5% metallic aluminium powder, 0.5~ 5% metallic silicon power and 1~4% special additive be added batch mixer in, premix 40~50min be allowed to mix well to obtain Powder；
(2) mixed grind：Kolleroang is added in the fused zirconia particle of 40~50% plate diamond spar particle and 10~20% In, while the phenolic resin of one third is added, 1~2min of mixed grind；Again into kolleroang be added step (1) mixing powder with And remaining phenolic resin, it then proceeds by mixed grind and obtains pug, total mixed grind time is 18~25min, ensures that pug has Expect in vain without apparent segregation, not conglomeration, nothing while mobility, reunite；
(3) it is molded：According to the type for the slide plate to be produced, step (2) is obtained into pug using press and is pressed into adobe, It controls adobe size, overlap, defect, hemp skin, layer and the presentation qualities such as splits；
(4) it is heat-treated：By adobe in step (3) be put into drier heat treatment, initial temperature be 60~80 DEG C, by temperature from It is low to high to be stepped up to 180~250 DEG C, heating-up time 16h, go out drier after drying 20~32h at such a temperature；
(5) it is burnt into：Adobe is put into kiln after will be dry in step (4), and it is 1420~1480 DEG C to control the temperature in kiln, is protected Warm 15h buries carbon firing；
(6) digestion is carbonized：The adobe being burnt into step (5) is put into asphalt storage, the temperature control in asphalt storage exists 180~200 DEG C, pressure control cools down in 1.2~1.8MPa after keeping the temperature 5h, and adobe, which is then put into carbonization kiln, carries out at carbonization Reason, carbonization kiln temperature degree control is 450 ± 10 DEG C；
(7) it finishes：Will by digestion carbonization treatment obtains in step (6) slide plate using surface grinding machine to its sliding surface into Row processing；
(8) it examines, pack：Qualified slide plate will be examined to be packed into packing case, and carry out mark.
Preferably, the kiln in the step (5) is one kind in tunnel oven and shuttle kiln.
Compared to existing aluminium zirconium carbon materials matter slide plate, the beneficial effects of the invention are as follows：
Composite alumina micro mist is the key that the slide plate performance indicator improves, and the alumina powder of different-grain diameter can be effectively Sliding plate brick is filled, while being obviously promoted slide plate sintering, improves the intensity for burning tail skid；Plate diamond spar particle and fused zirconia Grain is used as aggregate, plays a supportive role, and plate diamond spar and fused zirconia fine powder are the main components of slide plate matrix, and plate diamond spar is early High-temperature process has well good thermal shock resistance and bending strength, and fused zirconia has can good high temperature resistance；Institute It states using crystalline flake graphite and carbon black as compounded carbons in raw material, crystalline flake graphite has preferable resistance to slag, and nano carbon black grain size is small, can It preferably fills, and forms carbon network between alumina particle, be conducive to absorb and balance to thermally expand and produce in contraction process Raw thermal stress reduces the coefficient of thermal expansion of material, and the strength retention after thermal shock is higher, reduces thermal shock to material structure Destruction, to improve material thermal shock resistance.Rational grain composition is conducive to improve the compactness of converter furnace sliding plate brick, uniformly Property and processability；Addition metallic aluminium powder, silica flour and special additive are conducive to increase toughness and inoxidizability and the thermal shock of product Stability；Meanwhile the simple production process of the sliding plate brick is prepared, easy to control, low energy consumption, operating environment cleaning, worker's labour Intensity is small, and product qualification rate is high, long shelf-life, and manufacturing cost is low.
Specific implementation mode
Firstly, it is necessary to which explanation, illustrates addition composite alumina of the present invention by by way of example below The characteristics of micro mist and the sliding plate brick of carbon source and advantage etc., however what all descriptions were intended merely to illustrate, without should be by it It is interpreted as forming any restrictions to the present invention.
To avoid repeating, first by involved in embodiment related raw material technical parameter or production method be described collectively, implement It is repeated no more in example：
The Al of the plate diamond spar particle and plate diamond spar fine powder2O content >=98.5%, pH value are in neutrality, effective size of grain Content >=90%.
The Al of the fused zirconia particle and fused zirconia fine powder2O3With ZrO2Content >=98%, while ZrO2Content >=23%.
The composite alumina micro mist includes 1 μm of alumina powder 5~8% and 5 μm of alumina powder 5~7%.
The granularity of the crystalline flake graphite is 1000 mesh, C content >=96% in the crystalline flake graphite；The metallic aluminium powder and gold The granularity for belonging to silica flour is 240 mesh, Al content >=99% in the metallic aluminium powder, Si content >=97% in the metallic silicon power.
The embodiment just provided below by this is come the sliding plate brick to present invention addition composite alumina micro mist and carbon source It illustrates.
Embodiment 1
The sliding plate brick of addition composite alumina micro mist and carbon source described in the present embodiment, raw material composition and weight percent For：40% plate diamond spar particle, 20% fused zirconia particle, 10% plate diamond spar fine powder, 5% fused zirconia Fine powder, 10% composite alumina micro mist, 2.5% crystalline flake graphite, 2.5% carbon black, 3% metallic aluminium powder, 3% metal Silica flour, 4% special additive, is total up to 100%；Additional 5% phenolic resin.
The preparation method of the sliding plate brick of addition composite alumina micro mist and carbon source described in the present embodiment includes the following steps：
(1) powder mixes：By 10% plate diamond spar fine powder, 5% fused zirconia fine powder, 10% composite alumina Micro mist, 2.5% crystalline flake graphite, 2.5% carbon black, 3% metallic aluminium powder, 3% metallic silicon power and 4% special addition Agent is added in batch mixer, and premix 40min is allowed to mix well to obtain powder；
(2) mixed grind：The fused zirconia particle of 40% plate diamond spar particle and 20% is added in kolleroang, is added simultaneously Enter the phenolic resin of one third, mixed grind 2min；The powder of step (1) mixing and remaining phenolic aldehyde is added into kolleroang again Resin then proceeds by mixed grind and obtains pug, and total mixed grind time is 20min, is ensured while pug has mobility without bright Aobvious segregation, the white material of nothing, is not reunited at not conglomeration；
(3) it is molded：According to the type for the slide plate to be produced, step (2) is obtained into pug using press and is pressed into adobe, It controls adobe size, overlap, defect, hemp skin, layer and the presentation qualities such as splits；
(4) it is heat-treated：By adobe in step (3) be put into drier heat treatment, initial temperature be 60 DEG C, by temperature from as low as Height is stepped up to 250 DEG C, heating-up time 16h, and drying at such a temperature goes out drier afterwards for 24 hours；
(5) it is burnt into：Adobe is put into tunnel oven after will be dry in step (4), and it is 1420 DEG C to control the temperature in tunnel oven, Heat preservation 15h buries carbon firing；
(6) digestion is carbonized：The adobe being burnt into step (5) is put into asphalt storage, the temperature control in asphalt storage exists 180 DEG C, pressure control cools down in 1.8MPa after keeping the temperature 5h, and adobe, which is then put into carbonization kiln, carries out carbonization treatment, and be carbonized kiln temperature Degree control is 450 DEG C；
(7) it finishes：Will by digestion carbonization treatment obtains in step (6) slide plate using surface grinding machine to its sliding surface into Row processing；
(8) it examines, pack：Qualified slide plate will be examined to be packed into packing case, and carry out mark.
Addition composite alumina micro mist and the sliding plate brick properties such as table 1 of carbon source made of the present embodiment.
Embodiment 2
The sliding plate brick of addition composite alumina micro mist and carbon source described in the present embodiment, raw material composition and weight percent For：45% plate diamond spar particle, 15% fused zirconia particle, 5% plate diamond spar fine powder, 10% fused zirconia Fine powder, 12% composite alumina micro mist, 2% crystalline flake graphite, 2% carbon black, 2.5% metallic aluminium powder, 3.5% metal Silica flour, 3% special additive, is total up to 100%；Additional 4% phenolic resin.
The preparation method of the sliding plate brick of addition composite alumina micro mist and carbon source described in the present embodiment includes the following steps：
(1) powder mixes：By 5% plate diamond spar fine powder, 15% fused zirconia fine powder, 12% composite alumina Micro mist, 2% crystalline flake graphite, 2% carbon black, 2.5% metallic aluminium powder, 3.5% metallic silicon power and 1% special addition Agent is added in batch mixer, and premix 45min is allowed to mix well to obtain powder；
(2) mixed grind：The fused zirconia particle of 44% plate diamond spar particle and 13% is added in kolleroang, is added simultaneously Enter the phenolic resin of one third, mixed grind 2min；The powder of step (1) mixing and remaining phenolic aldehyde is added into kolleroang again Resin then proceeds by mixed grind and obtains pug, and total mixed grind time is 25min, is ensured while pug has mobility without bright Aobvious segregation, the white material of nothing, is not reunited at not conglomeration；
(3) it is molded：According to the type for the slide plate to be produced, step (2) is obtained into pug using press and is pressed into adobe, It controls adobe size, overlap, defect, hemp skin, layer and the presentation qualities such as splits；
(4) it is heat-treated：By adobe in step (3) be put into drier heat treatment, initial temperature be 80 DEG C, by temperature from as low as Height is stepped up to 200 DEG C, heating-up time 16h, goes out drier after drying 32h at such a temperature；
(5) it is burnt into：Adobe is put into tunnel oven after will be dry in step (4), and it is 1480 DEG C to control the temperature in tunnel oven, Heat preservation 15h buries carbon firing；
(6) digestion is carbonized：The adobe being burnt into step (5) is put into asphalt storage, the temperature control in asphalt storage exists 200 DEG C, pressure control cools down in 1.6MPa after keeping the temperature 5h, and adobe, which is then put into carbonization kiln, carries out carbonization treatment, and be carbonized kiln temperature Degree control is 458 DEG C；
(7) it finishes：Will by digestion carbonization treatment obtains in step (6) slide plate using surface grinding machine to its sliding surface into Row processing；
(8) it examines, pack：Qualified slide plate will be examined to be packed into packing case, and carry out mark.
Addition composite alumina micro mist and the sliding plate brick properties such as table 1 of carbon source made of the present embodiment.
Embodiment 3
The sliding plate brick of addition composite alumina micro mist and carbon source described in the present embodiment, raw material composition and weight percent For：50% plate diamond spar particle, 10% fused zirconia particle, 7% plate diamond spar fine powder, 8% fused zirconia Fine powder, 12% composite alumina micro mist, 3% crystalline flake graphite, 2% carbon black, 1% metallic aluminium powder, 5% metallic silicon Powder, 2% special additive, is total up to 100%；Additional 4~6% phenolic resin.
The preparation method of the sliding plate brick of addition composite alumina micro mist and carbon source described in the present embodiment includes the following steps：
(1) powder mixes：By 7% plate diamond spar fine powder, 8% fused zirconia fine powder, 12% composite alumina Micro mist, 3% crystalline flake graphite, 2% carbon black, 1% metallic aluminium powder, 5% metallic silicon power and 2% special additive add Enter in batch mixer, premix 50min is allowed to mix well to obtain powder；
(2) mixed grind：The fused zirconia particle of 50% plate diamond spar particle and 10% is added in kolleroang, is added simultaneously Enter the phenolic resin of one third, mixed grind 2min；The powder of step (1) mixing and remaining phenolic aldehyde is added into kolleroang again Resin then proceeds by mixed grind and obtains pug, and total mixed grind time is 25min, is ensured while pug has mobility without bright Aobvious segregation, the white material of nothing, is not reunited at not conglomeration；
(3) it is molded：According to the type for the slide plate to be produced, step (2) is obtained into pug using press and is pressed into adobe, It controls adobe size, overlap, defect, hemp skin, layer and the presentation qualities such as splits；
(4) it is heat-treated：By adobe in step (3) be put into drier heat treatment, initial temperature be 80 DEG C, by temperature from as low as Height is stepped up to 200 DEG C, heating-up time 16h, goes out drier after drying 32h at such a temperature；
(5) it is burnt into：Adobe is put into tunnel oven after will be dry in step (4), and it is 1480 DEG C to control the temperature in tunnel oven, Heat preservation 15h buries carbon firing；
(6) digestion is carbonized：The adobe being burnt into step (5) is put into asphalt storage, the temperature control in asphalt storage exists 200 DEG C, pressure control cools down in 1.8MPa after keeping the temperature 5h, and adobe, which is then put into carbonization kiln, carries out carbonization treatment, and be carbonized kiln temperature Degree control is 445 DEG C；
(7) it finishes：Will by digestion carbonization treatment obtains in step (6) slide plate using surface grinding machine to its sliding surface into Row processing；
(8) it examines, pack：Qualified slide plate will be examined to be packed into packing case, and carry out mark.
Addition composite alumina micro mist and the sliding plate brick properties such as table 1 of carbon source made of the present embodiment.
Sliding plate brick properties made of 1 the various embodiments described above of table detect
The sliding plate brick testing number of addition composite alumina micro mist of the present invention and the sliding plate brick and conventional aluminum zirconium carbon of carbon source According to comparative analysis, the cold crushing strength of the sliding plate brick of addition composite alumina micro mist of the present invention and carbon source is more than 220MPa, high temperature break resistant intensity are more than 30MPa, and apparent porosity is less than 4%, is completely superior to the sliding plate brick of conventional aluminum zirconium carbon, and The sliding plate brick of the present invention for adding composite alumina micro mist and carbon source uses stove number up to 3-4 stoves, hence it is evident that is higher than conventional aluminum The sliding plate brick of zirconium carbon.The intensity index of sliding plate brick of the present invention is promoted, and the porosity is remarkably decreased, with tail skid transversal crack and Phenomenon of rupture also substantially reduces, and thermal shock resistance significantly improves；Smooth with rear plate face, erosion reaming is small, and number and safety is used in conjunction Property also significantly improves.

Claims (7)

1. the sliding plate brick of a kind of addition composite alumina micro mist and carbon source, which is characterized in that its raw material composition and weight percent Than for：40~50% plate diamond spar particle, 10~20% fused zirconia particle, 5~10% plate diamond spar fine powder, 5 ~10% fused zirconia fine powder, 10~15% composite alumina micro mist, 0.5~3% crystalline flake graphite, 0.5~3% Carbon black, 0.5~5% metallic aluminium powder, 0.5~5% metallic silicon power, 1~4% special additive are total up to 100%；Outside Add 4~6% phenolic resin.
2. the sliding plate brick of addition composite alumina micro mist according to claim 1 and carbon source, it is characterised in that：The plate The Al of corundum in granules and plate diamond spar fine powder2O content >=98.5%, pH value are in neutrality, effective size of grain content >=90%.
3. the sliding plate brick of addition composite alumina micro mist according to claim 1 and carbon source, it is characterised in that：The electric smelting The Al of fused alumina zirconia particle and fused zirconia fine powder2O3With ZrO2Content >=98%, while ZrO2Content >=23%.
4. the sliding plate brick of addition composite alumina micro mist according to claim 1 and carbon source, it is characterised in that：It is described compound Alumina powder includes 1 μm of alumina powder 5~8% and 5 μm of alumina powder 5~7%.
5. the sliding plate brick of addition composite alumina micro mist according to claim 1 and carbon source, it is characterised in that：The scale The granularity of graphite is 1000 mesh, C content >=96% in the crystalline flake graphite；The granularity of the metallic aluminium powder and metallic silicon power is 240 mesh, Al content >=99% in the metallic aluminium powder, Si content >=97% in the metallic silicon power.
6. the preparation method of the sliding plate brick of addition composite alumina micro mist and carbon source according to claims 1 to 5, feature It is, it is specific according to the following steps to carry out：
(1) powder mixes：By 5~10% plate diamond spar fine powder, 5~10% fused zirconia fine powder, 10~15% answer Close alumina powder, 0.5~3% crystalline flake graphite, 0.5~3% carbon black, 0.5~5% metallic aluminium powder, 0.5~5% Metallic silicon power and 1~4% special additive be added batch mixer in, premix 40~50min be allowed to mix well to obtain powder；
(2) mixed grind：The fused zirconia particle of 40~50% plate diamond spar particle and 10~20% is added in kolleroang, together When be added one third phenolic resin, 1~2min of mixed grind；The powder of step (1) mixing is added into kolleroang again and remains Remaining phenolic resin then proceeds by mixed grind and obtains pug, and total mixed grind time is 18~25min, ensures that pug has flowing Property while without apparent segregation, not conglomeration, without expecting in vain, do not reunite；
(3) it is molded：According to the type for the slide plate to be produced, step (2) is obtained into pug using press and is pressed into adobe, controlled Good adobe size, overlap, defect, hemp skin, layer such as split at the presentation qualities；
(4) it is heat-treated：By adobe in step (3) be put into drier heat treatment, initial temperature be 60~80 DEG C, by temperature from as low as Height is stepped up to 180~250 DEG C, heating-up time 16h, goes out drier after drying 20~32h at such a temperature；
(5) it is burnt into：Adobe after will be dry in step (4) is put into kiln, and it is 1420~1480 DEG C to control the temperature in kiln, heat preservation 15h buries carbon firing；
(6) digestion is carbonized：The adobe being burnt into step (5) is put into asphalt storage, the temperature control in asphalt storage 180~ 200 DEG C, pressure control cools down in 1.2~1.8MPa after keeping the temperature 5h, and adobe, which is then put into carbonization kiln, carries out carbonization treatment, carbon It is 450 ± 10 DEG C to change the control of kiln temperature degree；
(7) it finishes：The slide plate that digestion carbonization treatment obtains in step (6) will add its sliding surface using surface grinding machine Work；
(8) it examines, pack：Qualified slide plate will be examined to be packed into packing case, and carry out mark.
7. the preparation method of addition composite alumina micro mist according to claim 6 and the sliding plate brick of carbon source, feature exist In：Kiln in the step (5) is one kind in tunnel oven and shuttle kiln.
CN201810498614.5A 2018-05-23 2018-05-23 A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source Pending CN108484138A (en)

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CN109437940A (en) * 2018-12-29 2019-03-08 河南新拓耐火材料有限公司 One kind, which is not burnt, does not soak ladle upper nozzle and preparation method thereof
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CN111410519A (en) * 2020-04-24 2020-07-14 河南熔金高温材料股份有限公司 Aluminum titanate-added Al2O3-C sliding brick and production method thereof
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CN116589287A (en) * 2023-01-08 2023-08-15 无锡市南方耐材有限公司 Low-cost and long-service-life sliding plate brick and preparation method thereof
CN116813316A (en) * 2023-06-30 2023-09-29 马鞍山利尔开元新材料有限公司 Microporous corundum-nano silicon carbide-carbon composite material, converter slag-blocking sliding plate brick and preparation methods thereof
CN116903353A (en) * 2023-09-14 2023-10-20 北京利尔高温材料股份有限公司 Long-service-life ladle bottom brick and preparation method thereof
CN117303924A (en) * 2023-11-29 2023-12-29 河北国亮新材料股份有限公司 Long-service-life sliding plate brick and preparation method thereof

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CN109437940A (en) * 2018-12-29 2019-03-08 河南新拓耐火材料有限公司 One kind, which is not burnt, does not soak ladle upper nozzle and preparation method thereof
CN110452006A (en) * 2019-09-24 2019-11-15 瑞泰马钢新材料科技有限公司 A kind of low cost magnesium zirconium carbonaceous antioxidizing paint and preparation method thereof
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CN111807822A (en) * 2020-07-21 2020-10-23 河南熔金高温材料股份有限公司 Aluminum-zirconium-carbon sliding plate added with aluminum-silicon alloy and fired at low temperature and production method thereof
CN112778003A (en) * 2021-01-07 2021-05-11 瑞泰马钢新材料科技有限公司 Manufacturing method of aluminum-zirconium-carbon light-fired converter gate valve
CN113213897B (en) * 2021-06-23 2022-08-19 郑州振东科技有限公司 Steel ladle low-carbon aluminum-magnesium-carbon brick
CN113213897A (en) * 2021-06-23 2021-08-06 郑州振东科技有限公司 Steel ladle low-carbon aluminum-magnesium-carbon brick
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