CN110041086A - A kind of flexible carbonaceous castable for furnace bottom screed-coat - Google Patents
A kind of flexible carbonaceous castable for furnace bottom screed-coat Download PDFInfo
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- CN110041086A CN110041086A CN201910393433.0A CN201910393433A CN110041086A CN 110041086 A CN110041086 A CN 110041086A CN 201910393433 A CN201910393433 A CN 201910393433A CN 110041086 A CN110041086 A CN 110041086A
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- coat
- furnace bottom
- high power
- bottom screed
- flexible carbonaceous
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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
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
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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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The invention discloses a kind of flexible carbonaceous castables for furnace bottom screed-coat, form as follows by mass percentage: high power graphite particle material 61~65%；High power graphite powder 10~20%；Active alpha-alumina powder 3~5%；Natural flake graphite 2~5%；Fine aluminium acid salt cement 7~14%；Dispersing agent 1~2%.Energy conservation and environmental protection of the present invention does not generate environmentally harmful substance, does not have any harm to construction personnel's body, meets the environmental protection and energy-saving and emission-reduction requirement of country's promotion, has greater advantage compared with prior art environmental protection aspect.Used material constructing operation is simple, has certain thixotropy, only needs quickly equating in time after vibration moulding, can save a large amount of durations.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of flexible carbonaceous castable for furnace bottom screed-coat.
Background technique
Modern blast furnace gradually develops to large and medium-sized direction, and country just constantly controls and eliminates steel backward production facilities, creates 2000
~5800 cubic metres of blast furnaces are increasing, and becoming larger for heat size proposes requirements at the higher level to smelting strength of blast furnace.Simultaneously to furnace bottom cupola well
Resistance to material propose requirements at the higher level, it is also necessary to carry out corresponding technological improvement, realize prolonging campaign under the new situation.
Blast furnace bottom leveling layer include it is more than region and furnace bottom sealing plate under furnace bottom sealing plate between carbon brick region, blast furnace
Carbon brick masonry is the key that blast furnace builds the first step, builds accuracy and builds generation significant impact to subsequent material.As
The base foundation that carbon brick is built, the screed-coat position between furnace bottom sealing plate and carbon brick is even more important.The thermal conductivity of screed-coat is direct
The service life of blast furnace lining material is influenced, the high-precision that first layer carbon brick is built proposes high request to planarization.
It is tar or resin-bonded carbon ramming mass that the country's levelling layer material of blast furnace mostly uses greatly substantially at present, and there is lead
The problems such as hot coefficient is low, long in time limit, environmental pollution is serious, intensity is low, unsuitable levelling, has larger impact to blast furnace service life.
Summary of the invention
It is an object of that present invention to provide a kind of novel levelling layer materials, have easy construction, flatness good, thermally conductive high, easy
Levelling, energy-saving and environment-friendly characteristic is the effective way for solving the problems, such as furnace bottom screed-coat in the prior art.
In order to achieve the above objectives, as follows using technical solution:
A kind of flexible carbonaceous castable for furnace bottom screed-coat forms as follows by mass percentage:
According to the above scheme, the high power graphite particle material meets claimed below: C >=98wt%, particulate material by 3mm~
1mm, 1mm~0mm two kinds of particles gradation composition.
According to the above scheme, the high power graphite powder meets claimed below: C >=98wt%, high power graphite powder be≤
The mixture of 0.088mm and≤two kinds of granularities of 0.045mm.
According to the above scheme, the active alpha -1.7 μm of ≈ of alumina powder granularity D50.
According to the above scheme, the fine aluminium acid salt cement is CA-71 aluminate cement, granularity≤0.074mm.
According to the above scheme, the dispersing agent be organic silicon solid defoaming agent or fatty acid methyl ester sulfonate, granularity≤
0.074mm。
Cement is individually packed using pouch, remaining component, which is mixed into after weighing according to the ratio through mechanical stirring, uniformly to gather materials；?
Construction site by the cement individually packed and uniformly gathers materials blender is added according to the ratio, after being sufficiently mixed and adding water and stirring uniformly
Carry out casting and constructing.
Compared with the existing technology, it is as follows to be beneficial to effect by the present invention:
1, for carbon pouring material of the invention using cement as bonding agent, the castable after hardening has certain intensity,
Make material when by load without generating deformation, guarantee screed-coat surfacing and size is accurate, solves traditional material and only have
The defect of intensity is just generated after heating.
2, material has the soft free machining characteristic of matter, and being easy to polish flat meets size requirement, levelling after material molding
It is not in pitted skin phenomenon that layer surface, which is easily looked for flat and smooth, can be sufficiently in close contact with carbon brick surface.Guarantee material after construction
Gap reaches≤0.5mm between the basic smooth and carbon brick of material surface height difference≤1mm, carbon brick.
3, graphite belongs to non-polar material, and water belongs to polar substances, and graphite infiltrates bad dispersibility in water, easily reunites,
It is technical problem existing for existing graphite-water material system.The dispersing agent that the present invention is added solves the infiltration of graphite in water
Problem better disperses graphite in water.
4, choosing high power graphite and the use of additive makes carbon pouring material in the equal > of thermal coefficient at each temperature
18W/mK has greater advantages at thermally conductive aspect than traditional carbon ramming mass.
5, energy conservation and environmental protection does not generate environmentally harmful substance, does not have any harm to construction personnel's body, meets country
The environmental protection and energy-saving and emission-reduction requirement of promotion have greater advantage compared with prior art environmental protection aspect.
6, the material constructing operation is simple, has certain thixotropy, only needs quickly equating in time after vibration moulding, can
Save a large amount of durations.
Specific embodiment
Following embodiment further illustrates technical solution of the present invention, but not as limiting the scope of the invention.
Embodiment 1
By mass percentage by high power graphite particle material 63.5%, high power graphite powder 13%, natural flake graphite
4%, fine aluminium acid salt cement 15%, active alpha-alumina powder 3%, dispersing agent 1.5% is put into blender and stirred uniformly, is added suitable
Amount water stirs into pourable state and is placed on vibration moulding in mold, demoulds after sample hardening.
Test block after demoulding is put into in 110 DEG C of baking oven dry take out afterwards for 24 hours and detects its thermal coefficient.
A kind of mold is made with steel plate, specific size is the square that bottom plate is side length 1m, and side wall dimensions are that side length is 1m,
Height is 0.1m.Mould side wall top surface is carried out after completing to wash plane grinding process, horizontal accuracy reaches≤1.6um.
200kg powder is weighed by the present embodiment proportion, is stirred evenly after suitable quantity of water is added, mixture is poured into ready-made mould
In tool, with vibrating head vibration moulding and surface is struck off.
In the present embodiment, through national authority, testing agency is detected, sample thermal coefficient > 23W/mK, material tool of the present invention
There is high thermal conductivity energy, heat reaches cooling system in time, protects blast furnace lining material；Specimen surface has one layer of water in mold
Film, rear moisture film to be hardened disappear, and casting test block surface is flat and smooth, no hole pitted skin phenomenon, and flatness is high, and levelling layer surface is each
The relative relief of point is not more than 0.5mm, has fully ensured that the datum level standard that carbon brick is built.
Embodiment 2
By high power graphite particle material 65%, high power graphite powder 13%, natural flake graphite 3%, fine aluminium acid salt cement
13%, active alpha-alumina powder 4%, dispersing agent 2% is put into blender and stirred uniformly, and suitable quantity of water is added and stirs into pourable shape
State is placed on vibration moulding in mold, demoulds after sample hardening.
Test block after demoulding is put into in 110 DEG C of baking oven dry take out afterwards for 24 hours and detects its thermal coefficient.
A kind of mold is made with steel plate, specific size is the square that bottom plate is side length 1m, and side wall dimensions are that side length is 1m,
Height is 0.1m.Mould side wall top surface is carried out after completing to wash plane grinding process, horizontal accuracy reaches≤1.6um.
200kg powder is weighed by the present embodiment material mixture ratio, is stirred evenly after suitable quantity of water is added, mixture is poured into and is carried out
Mold in, with vibrating head vibration moulding and surface is struck off.
In the present embodiment, through national authority, testing agency is detected, sample thermal coefficient > 25W/mK, material tool of the present invention
There is high thermal conductivity energy, heat reaches cooling system in time, protects blast furnace lining material；Specimen surface has one layer of water in mold
Film, rear moisture film to be hardened disappear, and casting test block surface is flat and smooth, no hole pitted skin phenomenon, and flatness is high, and levelling layer surface is each
The relative relief of point is not more than 0.7mm, has fully ensured that the datum level standard that carbon brick is built.
Embodiment 3
By high power graphite particle material 62%, high power graphite powder 17%, natural flake graphite 4%, fine aluminium acid salt cement
12%, active alpha-alumina powder 3%, dispersing agent 2% is put into blender and stirred uniformly, and suitable quantity of water is added and stirs into pourable shape
State is placed on vibration moulding in mold, demoulds after sample hardening.
Test block after demoulding is put into in 110 DEG C of baking oven dry take out afterwards for 24 hours and detects its thermal coefficient.
A kind of mold is made with steel plate, specific size is the square that bottom plate is side length 1m, and side wall dimensions are that side length is 1m,
Height is 0.1m.Mould side wall top surface is carried out after completing to wash plane grinding process, horizontal accuracy reaches≤1.6um.
200kg powder is weighed by the present embodiment material mixture ratio, is stirred evenly after suitable quantity of water is added, mixture is poured into and is carried out
Mold in, with vibrating head vibration moulding and surface is struck off.
In the present embodiment, through national authority, testing agency is detected, sample thermal coefficient > 22W/mK, material tool of the present invention
There is high thermal conductivity energy, heat reaches cooling system in time, protects blast furnace lining material；Specimen surface has one layer of water in mold
Film, rear moisture film to be hardened disappear, and casting test block surface is flat and smooth, no hole pitted skin phenomenon, and flatness is high, and levelling layer surface is each
The relative relief of point is not more than 0.5mm, has fully ensured that the datum level standard that carbon brick is built.
The above is only a preferred embodiment of the present invention, for those skilled in the art, exist
Under the premise of not departing from the technology of the present invention principle, several improvement can also be made, these improvement also should be regarded as protection of the invention
Range.
Claims (6)
1. a kind of flexible carbonaceous castable for furnace bottom screed-coat, it is characterised in that composition is as follows by mass percentage:
2. being used for the flexible carbonaceous castable of furnace bottom screed-coat as described in claim 1, it is characterised in that the high power stone
Black particulate material meets claimed below: C >=98wt%, and particulate material is by 3mm~1mm, 1mm~0mm two kinds of particles gradation composition.
3. being used for the flexible carbonaceous castable of furnace bottom screed-coat as described in claim 1, it is characterised in that the high power stone
Ink powder meets claimed below: C >=98wt%, and high power graphite powder is≤mixing of 0.088mm and≤two kinds of granularities of 0.045mm
Object.
4. being used for the flexible carbonaceous castable of furnace bottom screed-coat as described in claim 1, it is characterised in that the active alpha-oxygen
Change 1.7 μm of aluminium powder size D50 ≈.
5. being used for the flexible carbonaceous castable of furnace bottom screed-coat as described in claim 1, it is characterised in that the fine aluminium hydrochlorate
Cement is CA-71 aluminate cement, granularity≤0.074mm.
6. being used for the flexible carbonaceous castable of furnace bottom screed-coat as described in claim 1, it is characterised in that the dispersing agent is
Organic silicon solid defoaming agent or fatty acid methyl ester sulfonate, granularity≤0.074mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910393433.0A CN110041086B (en) | 2019-05-13 | 2019-05-13 | Flexible carbon castable for furnace bottom leveling layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910393433.0A CN110041086B (en) | 2019-05-13 | 2019-05-13 | Flexible carbon castable for furnace bottom leveling layer |
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| Publication Number | Publication Date |
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| CN110041086A true CN110041086A (en) | 2019-07-23 |
| CN110041086B CN110041086B (en) | 2021-07-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111518974A (en) * | 2020-04-24 | 2020-08-11 | 五冶集团上海有限公司 | Method for controlling building flatness of fully-laid carbon bricks at bottom of blast furnace |
| CN111620704A (en) * | 2020-05-20 | 2020-09-04 | 武汉钢铁有限公司 | High-thermal-conductivity carbon castable capable of flowing automatically for blast furnace |
| CN111906316A (en) * | 2020-08-12 | 2020-11-10 | 山东威尔斯通钨业有限公司 | Manufacturing method and pressing die for large annular powder metallurgy material green body |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000178075A (en) * | 1998-12-11 | 2000-06-27 | Toshiba Ceramics Co Ltd | Castable refractory containing carbon |
| CN103387401A (en) * | 2013-08-09 | 2013-11-13 | 武汉威林科技股份有限公司 | High heat conductive carbon ramming mass and preparation method thereof |
| CN105948027A (en) * | 2016-05-06 | 2016-09-21 | 成都新柯力化工科技有限公司 | Method for large-scale continuous preparation of graphene precursor and graphene precursor |
| CN106316424A (en) * | 2016-08-19 | 2017-01-11 | 郑州市瑞沃耐火材料有限公司 | High-heat conductivity self-flowing castable |
| CN109970458A (en) * | 2017-12-28 | 2019-07-05 | 蓝星硅材料有限公司 | A kind of modified carbonaceous chute and preparation method thereof |
-
2019
- 2019-05-13 CN CN201910393433.0A patent/CN110041086B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000178075A (en) * | 1998-12-11 | 2000-06-27 | Toshiba Ceramics Co Ltd | Castable refractory containing carbon |
| CN103387401A (en) * | 2013-08-09 | 2013-11-13 | 武汉威林科技股份有限公司 | High heat conductive carbon ramming mass and preparation method thereof |
| CN105948027A (en) * | 2016-05-06 | 2016-09-21 | 成都新柯力化工科技有限公司 | Method for large-scale continuous preparation of graphene precursor and graphene precursor |
| CN106316424A (en) * | 2016-08-19 | 2017-01-11 | 郑州市瑞沃耐火材料有限公司 | High-heat conductivity self-flowing castable |
| CN109970458A (en) * | 2017-12-28 | 2019-07-05 | 蓝星硅材料有限公司 | A kind of modified carbonaceous chute and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111518974A (en) * | 2020-04-24 | 2020-08-11 | 五冶集团上海有限公司 | Method for controlling building flatness of fully-laid carbon bricks at bottom of blast furnace |
| CN111518974B (en) * | 2020-04-24 | 2021-10-01 | 五冶集团上海有限公司 | Method for controlling building flatness of fully-laid carbon bricks at bottom of blast furnace |
| CN111620704A (en) * | 2020-05-20 | 2020-09-04 | 武汉钢铁有限公司 | High-thermal-conductivity carbon castable capable of flowing automatically for blast furnace |
| CN111906316A (en) * | 2020-08-12 | 2020-11-10 | 山东威尔斯通钨业有限公司 | Manufacturing method and pressing die for large annular powder metallurgy material green body |
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| CN110041086B (en) | 2021-07-13 |
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