CN106278319A - A kind of ladle slag line brick - Google Patents
A kind of ladle slag line brick Download PDFInfo
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- CN106278319A CN106278319A CN201610681901.0A CN201610681901A CN106278319A CN 106278319 A CN106278319 A CN 106278319A CN 201610681901 A CN201610681901 A CN 201610681901A CN 106278319 A CN106278319 A CN 106278319A
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- Prior art keywords
- slag line
- ladle slag
- magnesia
- line brick
- granularity
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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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
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- 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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
- C04B35/0435—Refractories from grain sized mixtures containing refractory metal compounds other than chromium oxide or chrome ore
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63472—Condensation polymers of aldehydes or ketones
- C04B35/63476—Phenol-formaldehyde condensation polymers
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- 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
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- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- 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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- 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
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
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- 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
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- 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
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
Abstract
The present invention relates to a kind of ladle slag line brick, use following raw material: content 82% high concentration Crystalline Magnesium, highly purified graphitic carbon 14%, metal oxidation resistance agent 2%, specialist additive 1%, and the high-strength phenolic resin of 3%, add above-mentioned raw materials sequentially, through high speed mixing smelting machine long-time mixing uniformly after, high tonnage friction pressure be pressed into ladle slag line brick.Magnesium carbon ladle slag line brick two grades of big granularity magnesia of interpolation and the graphite of 97% that the present invention prepares are raw material, and this is greatly saved the production cost of raw material, the long product lifecycle simultaneously prepared, and meets the needs of current steel-smelting technology development.Present invention also offers the production method of a kind of magnesium carbon ladle slag line brick, the method is simple, the superior product quality prepared.His the resistance to etch ability of ladle slag line brick product using the present invention program to prepare is the best, and thermal shock resistance height, easy construction, energy-conserving and environment-protective, length in service life etc. are a little, significantly reduce the consumption of refractory material, decreasing the discharge of fire-resistant industrial solid castoff, in terms of saving mineral resources, saving the energy, effect is notable simultaneously.
Description
Technical field
The present invention relates to the production and processing technical field of refractory material, refer more particularly to a kind of magnesium carbon ladle slag line brick and
Production method.
Background technology
Along with the development of steel-smelting technology, having higher requirement the service life of refractory material, particularly ladle is used
Refractory material.Before refine, ladle is an instrument stored and contain fortune molten steel, but in refining process, due to stove outside
The progress of refining techniques, the function of ladle there occurs change, can carry out in ladle application of vacuum, Argon, dust, heat,
The new technologies such as trimming so that the use condition of ladle is harsher, thus declines to a great extent the service life of ladle.Slag line portion
Position is most important position in whole ladle, and the slag lining of current ladle mainly uses magnesium carbon material, plays anti-erosion and prevents
The effect of dry slag.Owing to the use condition of ladle continuous casting slag line magnesia carbon brick is harsher, thus typically must select one-level magnesia
And high-quality crystalline flake graphite is as primary raw material, and these quality raw materials prices are high, this considerably increases the production cost of enterprise,
Seriously constrain the development of enterprise；On the other hand the service life of the magnesium carbon material ladle slag line brick of these routines is the shortest, because of
And the service life how improving Ladle slag line magnesia carbon brick becomes urgently to be resolved hurrily asking in steelmaking process with reducing production cost
Topic.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a kind of resistance to etch ability
Extremely strong, and erosion resisting is good, erosion resistibility is strong, thermal shock resistance is high, easy construction, energy-conserving and environment-protective, service life length
Ladle slag line brick.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of ladle slag line brick of structure, wherein, uses following raw material: content 82% high concentration Crystalline Magnesium, high-purity
Graphitic carbon 14%, metal oxidation resistance agent 2%, specialist additive 1%, and the high-strength phenolic resin of 3%, sequentially
Add above-mentioned raw materials, through high speed mixing smelting machine long-time mixing uniformly after, high tonnage friction pressure be pressed into ladle slag line brick.
Ladle slag line brick of the present invention, wherein, uses following raw material: content 82% high concentration Crystalline Magnesium, high
The graphitic carbon 14% of purity, metal oxidation resistance agent 2%, specialist additive 1%, and the high-strength phenolic resin of 3%.
Ladle slag line brick of the present invention, wherein, described raw material also includes: the 0.044mm granularity < plate of 0.088mm
Shape corundum fine powder 7.0-8.0%, granularity < the plate diamond spar micropowder 3.0-4.0% of 0.044mm；Above-mentioned plate diamond spar fine powder and plate
Shape corundum powder content ratio is 2:1.
Ladle slag line brick of the present invention, wherein, in described raw material, electric smelting big crystallization magnesia includes: granularity be < 0.1mm's
Fused magnesite fine powder, the fused magnesite micropowder of 0.1mm < granularity 0.044mm；Wherein, fused magnesite fine powder is micro-with fused magnesite
The content ratio of powder is 1:2.
Ladle slag line brick of the present invention, wherein, described raw material also includes: the granularity < fused zirconia-mullite 0.3 of 1mm
～0.9%, heat-resistant steel fiber 0.01～0.03%；Wherein, described fused zirconia-mullite and heat-resistant steel fiber content ratio are 30:
1。
Ladle slag line brick of the present invention, wherein, described raw material is through high speed mixing smelting machine mixing process, rubbed by high tonnage
After wiping pressure is pressed into ladle slag line brick, employing below scheme proportioning:
(1) weigh each raw material according to quantity, and respectively 96% and 97% magnesia is crushed；
(2) magnesia particle after crushing crosses vibrosieve, it is desirable to two kinds of magnesia particle granule sizes are intended to meet formula and want
Ask；
(3) the magnesia powder after crushing first puts in mixing roll as aggregate according to formula ratio, then is thrown by phenolic resin
Entering, premix processes 2-4 minute, is finally all put in mixing roll by remainder raw material, continues mixing process 20-30 minute；
(4) compound after mixing for step (3) is added mould compressing；
(5) molded magnesium carbon material ladle slag line brick is sent in dry kiln, carry out stage drying 20 hours and get final product
Product.
Ladle slag line brick of the present invention, in described step (4), compound is compressing, pressure is 0.2-
0.4MPa.By time compressing for the compound after mixing in step (4) described in the production method of ladle slag line brick, first use 2500-
The power of 3000kN is hit 2-3 time, then hits 4-6 time with the power of 6000-6500kN, makes brick size up to standard.Ladle slag line brick
Production method, in described step (5), when carrying out stage drying, first toast 5 hours with the programming rate of 36 DEG C/h, work as temperature
When degree reaches 200 DEG C, keeping this temperature to continue baking 4 hours, then the cooling rate baking of 11 DEG C/h i.e. obtains product in 11 hours.
The beneficial effects of the present invention is: the ladle slag line brick product using the present invention program to prepare mainly has the resistance to of it
Etch ability is strong, and erosion resisting is good, erosion resistibility is strong, thermal shock resistance is high, easy construction, energy-conserving and environment-protective, the use longevity
Life is long to be waited a little, significantly reduces the consumption of refractory material, decreases the discharge of fire-resistant industrial solid castoff simultaneously, is saving
Mineral resources, saving energy aspect effect are notable.
Detailed description of the invention
In order to make the purpose of the embodiment of the present invention, technical scheme and advantage clearer, implement below in conjunction with the present invention
Technical scheme in example carries out clear, complete description, it is clear that described embodiment is the section Example of the present invention, and
It is not all of embodiment.Based on embodiments of the invention, those of ordinary skill in the art are not before paying creative work
Put the every other embodiment obtained, broadly fall into protection scope of the present invention.
Present pre-ferred embodiments ladle slag line brick use following raw material: content 82% high concentration Crystalline Magnesium, high-purity
The graphitic carbon 14% of degree, metal oxidation resistance agent 2%, specialist additive 1%, and the high-strength phenolic resin of 3%, by the most suitable
Sequence adds above-mentioned raw materials, through high speed mixing smelting machine long-time mixing uniformly after, high tonnage friction pressure be pressed into ladle slag line brick.
After tested, the ladle slag line brick product using which to make has that erosion resisting is good, erosion resistibility strong, thermal shock resistance
Height, easy construction, energy-conserving and environment-protective, length in service life etc. a little, significantly reduce the consumption of refractory material, decrease fire-resistant simultaneously
The discharge of industrial solid castoff, in terms of saving mineral resources, saving the energy, effect is notable.
Further, above-mentioned ladle slag line brick use following raw material: content 82% high concentration Crystalline Magnesium, highly purified
Graphitic carbon 14%, metal oxidation resistance agent 2%, specialist additive 1%, and the high-strength phenolic resin of 3%.
Further, in above-mentioned ladle slag line brick, raw material also includes: the 0.044mm granularity < plate diamond spar of 0.088mm
Fine powder 7.0-8.0%, granularity < the plate diamond spar micropowder 3.0-4.0% of 0.044mm；Above-mentioned plate diamond spar fine powder and plate diamond spar
Powder content ratio is 2:1.
In above-mentioned ladle slag line brick, in raw material, electric smelting big crystallization magnesia includes: granularity < the fused magnesite fine powder of 0.1mm,
The fused magnesite micropowder of 0.1mm < granularity 0.044mm；Wherein, fused magnesite fine powder with the content ratio of fused magnesite micropowder is
1:2。
Further, in above-mentioned ladle slag line brick, raw material also includes: granularity < fused zirconia-mullite 0.3 of 1mm～
0.9%, heat-resistant steel fiber 0.01～0.03%；Wherein, fused zirconia-mullite and heat-resistant steel fiber content ratio are 30:1.
Further, in above-mentioned ladle slag line brick, raw material is through high speed mixing smelting machine mixing process, by high tonnage friction pressure
After being pressed into ladle slag line brick, below scheme is used to carry out green compact baking and cooling:
(1) weigh each raw material according to quantity, and respectively 96% and 97% magnesia is crushed；
(2) magnesia particle after crushing crosses vibrosieve, it is desirable to two kinds of magnesia particle granule sizes are intended to meet formula and want
Ask；
(3) the magnesia powder after crushing first puts in mixing roll as aggregate according to formula ratio, then is thrown by phenolic resin
Entering, premix processes 2-4 minute, is finally all put in mixing roll by remainder raw material, continues mixing process 20-30 minute；
(4) compound after mixing for step (3) is added mould compressing；
(5) molded magnesium carbon material ladle slag line brick is sent in dry kiln, carry out stage drying 20 hours and get final product
Product.
Embodiment
Use following raw material: content 82% high concentration Crystalline Magnesium, highly purified graphitic carbon 14%, metal oxidation resistance agent
2%, specialist additive 1%, and the high-strength phenolic resin of 3%, 0.044mm granularity < the plate diamond spar fine powder of 0.088mm
2%, granularity < the plate diamond spar micropowder 1% of 0.044mm；Above-mentioned plate diamond spar fine powder and plate diamond spar powder content ratio are 2:
1.Add above-mentioned raw materials sequentially, through high speed mixing smelting machine long-time mixing uniformly after, high tonnage friction pressure be pressed into
Ladle slag line brick.Carry out green compact baking and cooling: a via below scheme, room temperature is down to-8 DEG C the most again, keep 2.5h；b、
Heat up with 3 DEG C/h programming rate from 0-10 DEG C of low temperature state again, be warming up to 290～350 DEG C；C, 290～350 DEG C of insulations, protect
Temperature time 5h；D, again from 290～350 DEG C with 10 DEG C/h programming rate heat up, be warming up to 575～600 DEG C；E, again from 575～600
DEG C with 5 DEG C/h programming rate heat up, be warming up to 675～700 DEG C；F, truce after 675～700 DEG C of insulation 9h, refrigeration adds quickly cooling
But to room temperature, cool time, 3h, prepared ladle slag line brick.
After tested, the high-performance brick cup product of this embodiment scheme is used to have a resistance to etch ability, and erosion resisting is good,
Erosion resistibility is strong, thermal shock resistance is high, material is saved, and the feature such as environmental protection.
Claims (1)
1. a ladle slag line brick, it is characterised in that include the raw material of following percentage by weight: content is tied in the high concentration of 82%
Brilliant magnesium, highly purified graphitic carbon 14%, metal oxidation resistance agent 2%, specialist additive 1%, and the high intensity phenolic aldehyde tree of 3%
Fat；The granularity of described 96% magnesia is 8-25mm；The granularity of described 97% magnesia be 3-5mm, 1-3mm, 0-1mm and 200 mesh thin
Powder, the percentage by weight of each granularity is respectively 20-35%, 20-25%, 15-25%, 28-35%.According to the magnesium above stating description
Carbon ladle slag line brick, it is characterised in that the granularity of described 96% magnesia is 15-20mm, shared percentage by weight is 8-12%.Steel
Bag residue pile, it is characterised in that the percentage by weight of described raw material is: 96% magnesia 12%, 97% magnesia 67%, 97% graphite
18%, metallic aluminium silica flour 8%, phenolic resin 5%；Described 96% magnesia granularity is 15-20mm；The granularity of described 97% magnesia is
3-5mm, 1-3mm, 0-1mm and 200 mesh fine powders, the percentage by weight of each granularity is respectively 20%, and 25%, 25%, 30%.Magnesium carbon
The production method of ladle slag line brick, it is characterised in that comprise the following steps:
(1) weigh each raw material according to quantity, and respectively 96% and 97% magnesia is crushed；
(2) magnesia particle after crushing crosses vibrosieve, it is desirable to two kinds of magnesia particle granule sizes are intended to meet recipe requirements；
(3) the magnesia powder after crushing first puts in mixing roll as aggregate according to formula ratio, then is put into by phenolic resin, in advance
Mixed process 2-4 minute, finally all puts into remainder raw material in mixing roll, continues mixing process 20-30 minute；
(4) compound after mixing for step (3) is added mould compressing；
(5) molded magnesium carbon material ladle slag line brick is sent in dry kiln, carry out stage drying and i.e. obtain product in 20 hours.
The production method of ladle slag line brick, it is characterised in that in described step (4), compound is compressing, pressure is 0.2-
0.4MPa.By time compressing for the compound after mixing in step (4) described in the production method of ladle slag line brick, first use 2500-
The power of 3000kN is hit 2-3 time, then hits 4-6 time with the power of 6000-6500kN, makes brick size up to standard.Ladle slag line brick
Production method, in described step (5), when carrying out stage drying, first toast with the programming rate of 36 DEG C/h and work as temperature in 5 hours
When reaching 200 DEG C, keeping this temperature to continue baking 4 hours, then the cooling rate baking of 11 DEG C/h i.e. obtains product in 11 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681901.0A CN106278319A (en) | 2016-08-17 | 2016-08-17 | A kind of ladle slag line brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681901.0A CN106278319A (en) | 2016-08-17 | 2016-08-17 | A kind of ladle slag line brick |
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| CN106278319A true CN106278319A (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386826A (en) * | 2019-08-20 | 2019-10-29 | 郑州汇丰炉料有限公司 | A kind of ladle slag line brick and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311082A (en) * | 2014-10-21 | 2015-01-28 | 安徽省萧县华龙耐火材料有限责任公司 | Magnesia-carbon ladle slag line brick and production method thereof |
| CN105418093A (en) * | 2015-11-27 | 2016-03-23 | 浙江湖州父子岭耐火集团有限公司 | High-performance brick cup |
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2016
- 2016-08-17 CN CN201610681901.0A patent/CN106278319A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311082A (en) * | 2014-10-21 | 2015-01-28 | 安徽省萧县华龙耐火材料有限责任公司 | Magnesia-carbon ladle slag line brick and production method thereof |
| CN105418093A (en) * | 2015-11-27 | 2016-03-23 | 浙江湖州父子岭耐火集团有限公司 | High-performance brick cup |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386826A (en) * | 2019-08-20 | 2019-10-29 | 郑州汇丰炉料有限公司 | A kind of ladle slag line brick and preparation method thereof |
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