CN105948767A - Nanometer high temperature coating used for ladles - Google Patents
Nanometer high temperature coating used for ladles Download PDFInfo
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- CN105948767A CN105948767A CN201610287280.8A CN201610287280A CN105948767A CN 105948767 A CN105948767 A CN 105948767A CN 201610287280 A CN201610287280 A CN 201610287280A CN 105948767 A CN105948767 A CN 105948767A
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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
- C04B35/0435—Refractories from grain sized mixtures containing refractory metal compounds other than chromium oxide or chrome ore
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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
- C04B35/622—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
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
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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
- C04B2235/30—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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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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
- C04B2235/30—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
- C04B2235/3287—Germanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate
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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
- C04B2235/30—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
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
- C04B2235/3445—Magnesium silicates, e.g. forsterite
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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
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
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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
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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
- C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a nanometer high temperature coating used for ladles. The nanometer high temperature coating comprises, by weight, 8-10% of 12-8 alumina-based spinel, 11-15% of 8-5mm alumina-based spinel, 12-15% of 5-3mm forsterite, 10-15% of 3-1mm magnesia, 30-35% of 100nm or below nanometer magnesia, 3-5% of ZrC nanopowder, 1-2% of Ni2GeO4 nanopowder, 1-2% of nanometer rare earth powder, 1-5% of a plasticizer and 3-5% of a binder, the binder is one or a combination of alumina hydrate and sodium hexametaphosphate, and the plasticizer is ball clay or dextrin. Compared with coatings in the prior art, the nanometer high temperature coating can effectively solve the hot gunning problem of ladles, and can realize long service life of the ladles, low refractory consumption per ton steel, long maintaining period of the ladles, labor intensity reduction and large economic and social benefits through repairing ladle liners through hot gunning construction in the use interval process.
Description
[technical field]
The present invention relates to high-temperature coatings technical field, specifically a kind of ladle nanometer high-temperature coatings.
[background technology]
In order to ensure ladle using effect, it is matter of frequent occurrence that ladle spray repair is repaired.Conventional gunning refractory is only used for
Cold conditions spray repair, needs to suspend ladle to use, just can carry out after natural cooling (typically requiring 2-3 days)
Repairing work.And ladle is when again putting into production, needs previously baked to more than 1100 DEG C, thus cause whole
Individual Period Process is the longest, has both delayed production, has expended again the energy.Therefore, if being provided that, a kind of ladle is with receiving
Rice high-temperature coatings is constructed under hot state, imperative.
[summary of the invention]
Present invention aim to solve above-mentioned deficiency and a kind of ladle nanometer high-temperature coatings is provided, energy
Enough problems effectively solving ladle hot spray repair, can use gap to be constructed to ladle liner by hot gunning at ladle
Repairing, make ladle long for service life, ton steel refractory consumption is low.
A kind of ladle nanometer high-temperature coatings of design for achieving the above object, by the component of following percentage by weight
Constitute:
Further, described bonding agent is one or both combination of hydrated alumina sodium hexameta phosphate.
Further, described plasticizer is ball clay or dextrin.
Described≤100nm nanometer magnesia, nanometer ZrC powder, Ni nanoparticle 2GeO4 powder, nano rare earth powder are all adopted
Preparing with mechanical crushing method, its preparation process is: by micron order magnesia, micron order ZrC powder, micron order Ni2GeO4
Powder or micron order rare earth powder, add in ball mill, under the stirring of variable speed stirrer, have Achates in ball mill
Ball accelerates to pulverize, simultaneously under the protection of noble gas so that it is become nanoscale, prepared≤100nm nanometer
The particle size range of magnesia, nanometer ZrC powder, Ni nanoparticle 2GeO4 powder or nano rare earth powder 10-85 nanometer it
Between.
The present invention is compared with the existing technology, it is possible to the problem effectively solving ladle hot spray repair, can use at ladle
Ladle liner is repaired by gap by hot gunning construction, makes ladle long for service life, ton steel refractory consumption
Low, its ton of steel refractory consumption can save more than 125% than domestic like product, and ladle maintenance cycle is elongated, work
People's labor intensity reduces, and economic and social benefit is huge, is worthy of popularization.
[detailed description of the invention]
The invention provides a kind of ladle nanometer high-temperature coatings, by the alumina-based point of following percentage by weight meter
Spar 12-8mm is 8-l0%, alumina-based spinelle 8-5mm is l1-15%, forsterite 5-3mm is
12-15%, magnesia 3-lmm are 10-15%, nanometer magnesia≤100nm is 30-35%, nanometer ZrC powder
For 3-5%, Ni nanoparticle 2GeO4 powder be 1-2%, nano rare earth powder be 1-2%, plasticizer be 1-5%, combination
Agent is that 3-5% mix homogeneously is made;Wherein, bonding agent be hydrated alumina sodium hexameta phosphate one or
The combination of two kinds;Plasticizer is ball clay or dextrin;Alumina-based spinelle content >=88%;Described≤100nm
Nanometer magnesia, nanometer ZrC powder, Ni nanoparticle 2GeO4 powder, nano rare earth powder all use mechanical crushing method to prepare,
Its preparation process is: by dilute to micron order magnesia, micron order ZrC powder, micron order Ni2GeO4 powder or micron order
Soil powder, adds in ball mill, under the stirring of variable speed stirrer, has agate ball to accelerate to pulverize in ball mill,
Simultaneously under the protection of noble gas so that it is become nanoscale, prepared≤100nm nanometer magnesia, nanometer
The particle size range of ZrC powder, Ni nanoparticle 2GeO4 powder or nano rare earth powder is between 10-85 nanometer.
The present invention is made further explained below below in conjunction with specific embodiment:
Embodiment 1
The present invention can use following percentage by weight meter in being embodied as: alumina-based spinelle 12-8mm is
10%, alumina-based spinelle 8-5mm be 15%, forsterite 5-3mm be 15%, magnesia 3-lmm be 13%,
Nanometer magnesia≤100nm is 33%, nanometer ZrC powder 5%, Ni nanoparticle 2GeO4 powder 1%, nano rare earth powder 1%, increase
Mould agent 3.5%, bonding agent 3.5% mix homogeneously is made;Described bonding agent is hydrated alumina 1.5% and 2.5%
Sodium hexameta phosphate combines;Described plasticizer is ball clay 3.5%.Mix, blender stir
Mix and uniformly make.
Embodiment 2
The present invention can use following percentage by weight meter in being embodied as: alumina-based spinelle 12-8mm is 9
%, alumina-based spinelle 8-5mm are 14%, forsterite 5-3mm is 14%, magnesia 3-lmm is 14%, receives
Rice magnesia≤100nm be 35%, nanometer ZrC powder 4%, Ni nanoparticle 2GeO4 powder 1%, nano rare earth powder 1%, plasticising
Agent 4%, bonding agent 4% mix homogeneously are made;Described bonding agent is the inclined phosphorus of hydrated alumina 1.5% and 2.5% 6
Acid sodium combines;Described plasticizer is dextrin 4%.Mix, blender stir and make.
Embodiment 3
The present invention can use following percentage by weight meter in being embodied as: alumina-based spinelle 12-8mm is
10%, alumina-based spinelle 8-5mm be 13.5%, forsterite 5-3mm be 14.5%, magnesia 3-lmm be 14.5
%, nanometer magnesia≤100nm is 34%, nanometer ZrC powder 4%, Ni nanoparticle 2GeO4 powder 2%, nano rare earth powder 1%,
Plasticizer 3.5%, bonding agent 3% mix homogeneously are made;Described bonding agent is hydrated alumina 2% and 2.5% 6
Polymeric sodium metaphosphate. combines;Described plasticizer is dextrin 4%.Mix, blender stir
Make.
Embodiment 4
The present invention can use following percentage by weight meter in being embodied as: alumina-based spinelle 12-8mm is 8
%, alumina-based spinelle 8-5mm are 15%, forsterite 5-3mm is 15%, magnesia 3-lmm is 15%, receives
Rice magnesia≤100nm be 30%, nanometer ZrC powder 3%, Ni nanoparticle 2GeO4 powder 2%, nano rare earth powder 2%, plasticising
Agent 5%, bonding agent 5% mix homogeneously are made;Described bonding agent is hydrated alumina 5%;Described plasticizer
For ball clay 5%.Mix, blender stir and make.
Embodiment 5
The present invention can use following percentage by weight meter in being embodied as: alumina-based spinelle 12-8mm is
10%, alumina-based spinelle 8-5mm be 15%, forsterite 5-3mm be 12%, magnesia 3-lmm be 10%,
Nanometer magnesia≤100nm is 35%, nanometer ZrC powder 5%, Ni nanoparticle 2GeO4 powder 1%, nano rare earth powder 2%, increase
Mould agent 5%, bonding agent 5% mix homogeneously is made;Described bonding agent is sodium hexameta phosphate 5%;Described plasticising
Agent is dextrin 5%.Mix, blender stir and make.
Embodiment 6
The present invention can use following percentage by weight meter in being embodied as: alumina-based spinelle 12-8mm is
10%, alumina-based spinelle 8-5mm be 11%, forsterite 5-3mm be 15%, magnesia 3-lmm be 15%,
Nanometer magnesia≤100nm is 35%, nanometer ZrC powder 5%, Ni nanoparticle 2GeO4 powder 2%, nano rare earth powder 2%, increase
Mould agent 1%, bonding agent 4% mix homogeneously is made;Described bonding agent is hydrated alumina 4%;Described plasticising
Agent is ball clay 1%.Mix, blender stir and make.
In embodiment 1-5, alleged alumina-based spinelle 12-8mm, alumina-based spinelle 8-5mm, magnesium olive
Olive stone 5-3mm, magnesia 3-lmm, nanometer magnesia≤100nm, nanometer ZrC powder, Ni nanoparticle 2GeO4 powder, nanometer
Rare earth powder, bonding agent are identical with the component be given in Summary with plasticizer.
The nanometer high-temperature coatings of the present invention directly can carry out spray repair repairing to the ladle liner of more than 1000 DEG C,
Greatly reduce a ton steel refractory consumption, the resistance to material of ton steel more than 125% can be saved, also save mass energy in addition,
Ladle maintenance cycle is elongated, and labor strength reduces, and economic and social benefit is huge.Gunning refractory of the present invention
After tested, its test index such as following table:
In the present invention, micron order magnesia has agate ball to accelerate to pulverize, lazy in variable speed stirrer, ball mill
Property gas protection under, self-control, appearance has in the ball mill of water-cooled, add micron order magnesia (as point
Dissipate item).Along with the increase pulverized, granularity refinement;Granule degree of scatter increases, the aggregation velocity between granule
Also increase, when the pulverizing speed of material and aggregation velocity are relatively early equal, pulverize and reach dynamic equilibrium with dispersion,
The each component of micron order cannot crushed obtain thinner.If but can be by strengthening pulverization to be greatly improved thing
While the pulverizing speed of material, the strengthening process for dispersing of formation " nucleocapsid " structure also can be used to reduce granule
Between aggregation velocity, micron order magnesia just can be crushed thinner, is even likely to be breached nanoscale.This
Research the most organically combines shattering, uses the machinery improved on the basis of with standard machinery breaking method
The method that strengthening is ground, rely on the strong shearing of abrasive media compression under the mechanicals efforts such as impact,
To have micron order micron order magnesia and wear into " core ", with to micron order magnesia compound, there is good dispersion function
Organic surface active agent make " shell ", the most mutually assemble it at these solids being ground into " core "
Front just horse back is surrounded by these organic surface active agents respectively, forms the compound grain with " nucleocapsid " structure
Son, makes to be formed between solids barrier, and the most mutually assembles, so that horse after solids are crushed
On just disperseed, it is achieved pulverize and scattered integration, pulverizing, under scattered Circulation, make to have
" core " of the compound particle of " nucleocapsid " structure constantly diminishes, thus prepares highly stable, dispersed
Nano-component.Through overbaking, it is dried, makes micron order magnesia particle size range between 10 85 nanometers.
In the present invention, nanometer ZrC powder 3~5%, Ni nanoparticle 2GeO4 powder 1%, nano rare earth powder 1% is also as described above
In homemade ball mill, micron order magnesia, micron order ZrC powder, micron order Ni2GeO4 powder, micron order
Rare earth powder is prepared as particle size range nanoparticle between 10 85 nanometers.
The present invention is not limited by above-mentioned embodiment, other any spirit without departing from the present invention
With the change made under principle, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, all
Within being included in protection scope of the present invention.
Claims (4)
1. a ladle nanometer high-temperature coatings, it is characterised in that be made up of the component of following percentage by weight:
2. ladle nanometer high-temperature coatings as claimed in claim 1, it is characterised in that: described bonding agent is
One or both combination of hydrated alumina sodium hexameta phosphate.
3. ladle nanometer high-temperature coatings as claimed in claim 1, it is characterised in that: described plasticizer is
Ball clay or dextrin.
4. ladle nanometer high-temperature coatings as claimed in claim 1, it is characterised in that described≤100nm
Nanometer magnesia, nanometer ZrC powder, Ni nanoparticle 2GeO4 powder, nano rare earth powder all use mechanical crushing method to prepare,
Its preparation process is: by dilute to micron order magnesia, micron order ZrC powder, micron order Ni2GeO4 powder or micron order
Soil powder, adds in ball mill, under the stirring of variable speed stirrer, has agate ball to accelerate to pulverize in ball mill,
Simultaneously under the protection of noble gas so that it is become nanoscale, prepared≤100nm nanometer magnesia, nanometer
The particle size range of ZrC powder, Ni nanoparticle 2GeO4 powder or nano rare earth powder is between 10-85 nanometer.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114853392A (en) * | 2022-05-07 | 2022-08-05 | 华筑绿建(北京)科技有限公司 | Nano inorganic resin two-component road pavement patching material and preparation method thereof |
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CN101372418A (en) * | 2007-08-22 | 2009-02-25 | 庞立杰 | Low temperature synthesized aluminum-yttrium-calcium ceramic material |
CN103964879A (en) * | 2014-05-29 | 2014-08-06 | 张婷 | Gunning mix for medium-sized steel ladle |
CN103979990A (en) * | 2014-05-29 | 2014-08-13 | 张婷 | Small ladle gunning mix |
CN104003739A (en) * | 2014-05-29 | 2014-08-27 | 张婷 | 50-ton steel ladle gunning mix |
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2016
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CN101372418A (en) * | 2007-08-22 | 2009-02-25 | 庞立杰 | Low temperature synthesized aluminum-yttrium-calcium ceramic material |
CN101181754A (en) * | 2007-11-30 | 2008-05-21 | 东华大学 | Method for preparing WC/MgO nano composite powder |
CN103964879A (en) * | 2014-05-29 | 2014-08-06 | 张婷 | Gunning mix for medium-sized steel ladle |
CN103979990A (en) * | 2014-05-29 | 2014-08-13 | 张婷 | Small ladle gunning mix |
CN104003739A (en) * | 2014-05-29 | 2014-08-27 | 张婷 | 50-ton steel ladle gunning mix |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114853392A (en) * | 2022-05-07 | 2022-08-05 | 华筑绿建(北京)科技有限公司 | Nano inorganic resin two-component road pavement patching material and preparation method thereof |
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Application publication date: 20160921 |