CN105732052A - Nano silica sol combination hearth self-flowing material and preparation method thereof - Google Patents
Nano silica sol combination hearth self-flowing material and preparation method thereof Download PDFInfo
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- 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
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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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon 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
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/522—Oxidic
- C04B2235/5232—Silica or silicates other than aluminosilicates, e.g. quartz
Abstract
The invention belongs to the technical field of fireproof materials, and relates to a nano silica sol combination hearth self-flowing material and a preparation method thereof. The nano silica sol combination hearth self-flowing material comprises the following components in parts by weight: 65 to 80 parts of corundum, 8 to 20 parts of silicon carbide, 5 to 10 parts of active alumina micropowder, 2 to 5 parts of silica micropowder, 1 to 5 parts of spherical asphalt, 0.03 to 0.08 part of inorganic fiber, 0.01 to 0.1 part of sol curing agent, 0.05 to 0.15 part of dispersant, and 7 to 10 parts of nano silica sol. The provided nano silica soil combination hearth self-flowing material is an advanced self-flowing material for building or maintenance of blast furnace. The self-flowing material is casted and moulded through a framework and pump-delivering so as to build or repair a hearth. Compared with the conventional brick building method, the self-flowing material method has the characteristics of strong integral property, convenience for construction, little construction time, quick production, long service life, and little environmental pollution. Compared with the conventional ceramic cups, SiC and nano silica sol are combined to enhance the matrix, and the performance on resisting molten iron erosion is greatly improved.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to a kind of Nano silica sol in conjunction with cupola well self-flowing material and preparation method thereof.
Background technology
Blast furnace is the ironmaking capital equipment continuously performing work in hot environment, and its cupola well is the key position of safety long-life in blast furnace production process, and its superior performance determines the life-span that blast furnace is on active service.Cupola well is subject to molten iron physics eddy flow for a long time and eddy current washes away and chemical erosion, causes cupola well melting loss and destruction；In cupola well building process, a large amount of brickwork joints exist simultaneously, cause local defect and damage uneven, even occur that the furnace bottom of cupola well or sidewall block are floating owing to brickwork joint corrodes, and the safety of cupola well is on the hazard, and long-service life high-efficiency ironmaking target is difficult to.Extending blast furnace crucibe is smelt the problem that engineers and technicians are concerned about always service life.Current blast furnace crucibe both at home and abroad is newly-built or keeps in repair employing carbon brick or carbon brick-ceramic cup structure.
Additionally, Nano silica sol in conjunction with cupola well self-flowing material with Al2O3-SiC system is main, along position on newly-built/maintenance cupola well furnace bottom to air port, builds molding by formwork pumping, and cupola well forms the entirety not having any gap.Nano silica sol is in conjunction with cupola well self-flowing material complicated component, it is thus achieved that high-compactness, even structure, function admirable, high construction efficiency pumping automatic flowing material, depend on the selection of self-flowing material bonding agent Nano silica sol and the use of multiple micropowder, superfine powder and additive.This aggregate-fine powder mixture to give full play to the effect of its each component in blast furnace ironmaking process, necessarily require powder mix homogeneously, after site operation adds the stirring of bonding agent Nano silica sol, mobility is excellent, energy is Automatic Levelling rapidly, material not segregation, firm time is suitable for, it is ensured that after molding is built in pumping, texture material is homogeneous.
At present, tradition blast furnace crucibe refractory material use procedure still there is a problem in that:
(1) material globality is poor, there is the brickwork joint of thousands of；
(2) damaging uneven, local damage is serious, even has brick hydro-planing；
(3) material heat conductivity coupling is unreasonable, and energy utilization rate is low；
(4) long construction period, manpower loss is big, and construction environment is severe；
(5) material corrosion-resistant property is poor, and service life is short.
Therefore, blast furnace crucibe self-flowing material is existed improvement and the needs optimized.
Summary of the invention
In order to solve the problems referred to above, it is an object of the present invention to provide a kind of blast furnace crucibe newly-built/maintenance use Nano silica sol in conjunction with cupola well self-flowing material, it is poor that this Nano silica sol solves tradition blast furnace crucibe refractory material globality in conjunction with cupola well self-flowing material, local damage is serious, lead thermal mismatching, the problems such as corrosion-resistant property difference, change the construction method of material simultaneously, be substantially reduced blast furnace crucibe newly-built/construction period of maintenance process and manpower consumption, formwork pumping pouring construction makes environment improve, and improves blast furnace crucibe security performance and service life.
It is a further object of the present invention to provide the above-mentioned Nano silica sol preparation method in conjunction with cupola well self-flowing material.
To achieve these goals, the present invention adopts the following technical scheme that
According to an aspect of the present invention, the Nano silica sol of the present invention is in conjunction with cupola well self-flowing material, by mass parts, comprises:
In a preferred embodiment of the present invention, the Nano silica sol of the present invention is in conjunction with cupola well self-flowing material, by mass parts, comprises:
In the present invention, described corundum is at least one in Brown Alundum and dense alumina, wherein Al2O3Content >=95%, granularity is between 0.045～8mm；
Described carborundum, SiC content >=95%, granularity is between 0.045～3mm；
Described Reactive alumina, Al2O3Content >=99%, granularity≤4 μm；
Described fine silica powder, SiO2Content >=94%, particle mean size≤2 μm；
Described pelletted pitch, granularity is between 0.3～0.8mm；
Described inorfil is basalt fibre, and density is 2.6～2.8g/cm3；
Described colloidal sol firming agent is aluminum sulfate and at least one complex in alkanolamine and Alkylenediamine, and in described complex, aluminum sulfate accounts for 50%～70wt%；
Described alkanolamine can be diethanol monoisopropanolamine (DEIPA) or monoethanol diisopropanolamine (DIPA) (EDIPA), and described Alkylenediamine can be N, N'-dialkylalkylenediamines；
Described dispersant is technical grade sodium hexameta phosphate or polyethylene glycol type condensation polymer powder, and polyethylene glycol type condensation polymer can be such as FS20 or FS10 of Germany's BASF；
Described Nano silica sol is pH value acid silicon dioxide sol between 2～4, solid content >=40%, and mean diameter is 30nm.
According to a further aspect in the invention; the Nano silica sol preparation method in conjunction with cupola well self-flowing material of the present invention is provided; including: corundum, carborundum, Reactive alumina, fine silica powder, pelletted pitch, inorfil, colloidal sol firming agent, dispersant are added separately in blender at ambient temperature according to respective mass parts; action of forced stirring 5～8min guarantees mix homogeneously, the material being uniformly mixed；When construction, adding Nano silica sol, after Homogeneous phase mixing, obtain the Nano silica sol of the present invention in conjunction with cupola well self-flowing material in this mixed uniformly material, this Nano silica sol is levelling in conjunction with cupola well self-flowing material energy pumping automatic flowing.
The Nano silica sol of the present invention has the effect that in actual applications in conjunction with cupola well self-flowing material
The Nano silica sol of the present invention is that the blast furnace crucibe of a kind of advanced person is newly-built or safeguard gravity flow material in conjunction with cupola well self-flowing material, builds molding by formwork pumping, cupola well carries out newly-built or maintenance；Compared with tradition brick laying method, there is globality strong, easy construction, consuming time less, the feature such as fast, the long service life of going into operation, environmental pollution be little.It is in particular in:
1, cupola well integral sealing, it does not have brickwork joint
Blast furnace crucibe newly-built/maintenance process in, traditional method is that layer brick is built by laying bricks or stones, there is a large amount of brickwork joint, causes hearth erosion uneven, and production process potential safety hazard is uncontrollable.The Nano silica sol of the present invention adopts Nano silica sol to combine in conjunction with cupola well self-flowing material, molding can be built to overall along field liner on air port or local formwork to bottom cupola well, after powder and Nano silica sol mixing and stirring, by pumping method, material being constructed, material is self-leveling in a mold.So that blast furnace crucibe liner forms the entirety sealed, traditional method brickwork joint is overcome to exist, if Nano silica sol that Fig. 1 is the present invention is in conjunction with the cupola well one-piece casting picture (in figure, vestige is stayed by joining between mould) of cupola well self-flowing material.
2, constructing convenient, the duration is short
The Nano silica sol of the present invention is in conjunction with cupola well self-flowing material, the method adopting formwork and pumpable castables in work progress, construction volume > 20 ton hour, compare Traditional Man brick laying method, newly-built or one blast furnace crucibe of overhaul needs 30-40 days, the present invention is newly-built or one blast furnace crucibe of overhaul requires time for 7-10 days, improves efficiency more than 2 times.
3, anti-hot metal erosion can be strong
The Nano silica sol of the present invention in conjunction with cupola well self-flowing material compared with traditional ceramics cup, cause that substrate strengthening makes molten iron erosion-resisting characteristics be greatly improved owing to SiC and Nano silica sol combine, under 1450 DEG C of equal conditions, sample is carried out iron-resistant water erosion experiment, as shown in table 1, molten iron erosion ratio reduces about 40%.
Table 1 molten iron erosion ratio compares
Accompanying drawing explanation
Fig. 1 is the Nano silica sol that the present invention the is described cupola well one-piece casting picture in conjunction with cupola well self-flowing material.
Detailed description of the invention
Further illustrating the present invention below in conjunction with specific embodiment, embodiments below is only used for illustrating the present invention, and the scope of the present invention is not limited to these embodiments.
In the following embodiments, described corundum is Brown Alundum, Al2O3Content >=95%, granularity is between 0.045～8mm；
Described carborundum, SiC content >=95%, granularity is between 0.045～3mm；
Described Reactive alumina, Al2O3Content >=99%, granularity≤4 μm；
Described fine silica powder, SiO2Content >=94%, particle mean size≤2 μm；
Described pelletted pitch, granularity is between 0.3～0.8mm；
Described inorfil is basalt fibre, and density is 2.6～2.8g/cm3；
Described colloidal sol firming agent is that aluminum sulfate carries out 2:1 (weight ratio) compound with DEIPA；
Described dispersant is technical grade sodium hexameta phosphate；
Described Nano silica sol is pH value acid silicon dioxide sol between 2～4, solid content >=40%, and mean diameter is 30nm.
Embodiment 1
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 80.0 parts, the carborundum of 10.0 parts, the Reactive alumina of 5.0 parts is added successively in blender, the fine silica powder of 3.0 parts, the pelletted pitch of 2.0 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.0 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 2
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 75.0 parts, the carborundum of 15.0 parts, the Reactive alumina of 5.0 parts is added successively in blender, the fine silica powder of 3.0 parts, the pelletted pitch of 2.0 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.4 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 3
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 72.0 parts, the carborundum of 15.0 parts, the Reactive alumina of 8.0 parts is added successively in blender, the fine silica powder of 3.0 parts, the pelletted pitch of 2.0 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.5 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 4
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 72.0 parts, the carborundum of 16.0 parts, the Reactive alumina of 8.0 parts is added successively in blender, the fine silica powder of 2.0 parts, the pelletted pitch of 2.0 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.5 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 5
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 72.0 parts, the carborundum of 16.0 parts, the Reactive alumina of 8.0 parts is added successively in blender, the fine silica powder of 2.5 parts, the pelletted pitch of 1.5 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.5 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 6
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 70.0 parts, the carborundum of 16.0 parts, the Reactive alumina of 8.0 parts is added successively in blender, the fine silica powder of 2.5 parts, the pelletted pitch of 3.5 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.5 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 7
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 66.0 parts, the carborundum of 20.0 parts, the Reactive alumina of 8.0 parts is added successively in blender, the fine silica powder of 2.5 parts, the pelletted pitch of 3.5 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 7.6 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Embodiment 8
Described Nano silica sol in conjunction with cupola well self-flowing material preparation flow is:
In high effect forced mixing apparatus, setting mixing time as 5～8min, rotor speed is 500 turns/min, and rotary speed is 180 turns/min.At ambient temperature, the Brown Alundum of 66.0 parts, the carborundum of 18.0 parts, the Reactive alumina of 10 parts is added successively in blender, the fine silica powder of 2.5 parts, the pelletted pitch of 3.5 parts, the inorfil of 0.05 part, the colloidal sol firming agent of 0.02 part, the dispersant of 0.05 part, Homogeneous phase mixing, is subsequently adding the Nano silica sol of 8.0 parts, obtains the Nano silica sol of the present invention in conjunction with cupola well self-flowing material after Homogeneous phase mixing.
Test example
By GB/T24201-2009 detection method, in measurement embodiment 1-8, the Nano silica sol of preparation is in conjunction with the molten iron erosion ratio of cupola well self-flowing material and the ceramic cup of prior art, and result is presented below in table 2.
Table 2
Claims (10)
1. Nano silica sol is in conjunction with a cupola well self-flowing material, by mass parts, comprises:
2. Nano silica sol according to claim 1 is in conjunction with cupola well self-flowing material, by mass parts, comprises:
3. Nano silica sol according to claim 1 and 2 is in conjunction with cupola well self-flowing material, it is characterized in that, described corundum is at least one in Brown Alundum and dense alumina, wherein Al2O3Content >=95%, granularity is between 0.045～8mm.
4. Nano silica sol according to any one of claim 1 to 3 is in conjunction with cupola well self-flowing material, it is characterized in that, described carborundum SiC content >=95%, granularity is between 0.045～3mm；Described Reactive alumina Al2O3Content >=99%, granularity≤4 μm；Described fine silica powder SiO2Content >=94%, particle mean size≤2 μm.
5. Nano silica sol according to any one of claim 1 to 4 is in conjunction with cupola well self-flowing material, it is characterized in that, described pelletted pitch, granularity is between 0.3～0.8mm.
6. Nano silica sol according to any one of claim 1 to 5 is in conjunction with cupola well self-flowing material, it is characterized in that, described inorfil is basalt fibre, and density is 2.6～2.8g/cm3；Described dispersant is technical grade sodium hexameta phosphate or polyethylene glycol type condensation polymer powder.
7. Nano silica sol according to any one of claim 1 to 6 is in conjunction with cupola well self-flowing material, it is characterized in that, described colloidal sol firming agent is aluminum sulfate and at least one complex in alkanolamine and Alkylenediamine, and in described complex, aluminum sulfate accounts for 50%～70wt%.
8. Nano silica sol according to claim 7 is in conjunction with cupola well self-flowing material, it is characterized in that, described alkanolamine is DEIPA or EDIPA, and described Alkylenediamine is N, N'-dialkylalkylenediamines.
9. Nano silica sol according to any one of claim 1 to 8 is in conjunction with cupola well self-flowing material, it is characterized in that, described Nano silica sol is pH value acid silicon dioxide sol between 2～4, solid content >=40%, and mean diameter is 30nm.
10. the Nano silica sol described in a claim 1 to 9 is in conjunction with the preparation method of cupola well self-flowing material; including: corundum, carborundum, Reactive alumina, fine silica powder, pelletted pitch, inorfil, colloidal sol firming agent, dispersant are added separately in blender at ambient temperature according to respective mass parts; action of forced stirring 5～8min guarantees mix homogeneously, the material being uniformly mixed；When construction, in this mixed uniformly material, add Nano silica sol, after Homogeneous phase mixing, obtain the Nano silica sol of the present invention in conjunction with cupola well self-flowing material.
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| CN106435073A (en) * | 2016-11-11 | 2017-02-22 | 武汉宏程冶金材料有限公司 | Blast furnace liner overall pouring construction method for replacing spraying materials and refractory bricks |
| CN106699205A (en) * | 2016-12-26 | 2017-05-24 | 中国京冶工程技术有限公司 | Sol-bonded wet-process spray coating for blast furnace lining and preparation method of sol-bonded wet spray coating |
| CN107010965A (en) * | 2017-03-22 | 2017-08-04 | 中国京冶工程技术有限公司 | Fast gravity die blast furnace crucibe repairing material and preparation method thereof |
| CN107382346A (en) * | 2017-08-18 | 2017-11-24 | 宜兴市张泽浇注耐火材料有限公司 | Fire-resistant abrasion-proof pouring material and preparation method |
| CN110282990A (en) * | 2019-08-06 | 2019-09-27 | 北京瑞尔非金属材料有限公司 | A kind of cheek inner liner of blast furnace hearth of blast furnace crucibe castable and composition |
| CN111620706A (en) * | 2020-06-01 | 2020-09-04 | 无锡市宝宜耐火材料有限公司 | Al for modified carbon source optimized blast furnace tapping channel2O3-SiC-C refractory castable and preparation method and application thereof |
| CN112573909A (en) * | 2020-12-10 | 2021-03-30 | 中国京冶工程技术有限公司 | Ceramic wear-resistant material based on nano silica sol and preparation method thereof |
| CN113321495A (en) * | 2021-08-04 | 2021-08-31 | 北京利尔高温材料股份有限公司 | Cement-free high-performance pumping furnace hearth material |
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| CN106699205B (en) * | 2016-12-26 | 2019-12-20 | 中国京冶工程技术有限公司 | Sol-combined blast furnace lining wet-process spray coating and preparation method thereof |
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| CN107382346B (en) * | 2017-08-18 | 2019-12-13 | 宜兴市张泽浇注耐火材料有限公司 | refractory wear-resistant pouring material and preparation method thereof |
| CN110282990A (en) * | 2019-08-06 | 2019-09-27 | 北京瑞尔非金属材料有限公司 | A kind of cheek inner liner of blast furnace hearth of blast furnace crucibe castable and composition |
| CN111620706A (en) * | 2020-06-01 | 2020-09-04 | 无锡市宝宜耐火材料有限公司 | Al for modified carbon source optimized blast furnace tapping channel2O3-SiC-C refractory castable and preparation method and application thereof |
| CN112573909A (en) * | 2020-12-10 | 2021-03-30 | 中国京冶工程技术有限公司 | Ceramic wear-resistant material based on nano silica sol and preparation method thereof |
| CN113321495A (en) * | 2021-08-04 | 2021-08-31 | 北京利尔高温材料股份有限公司 | Cement-free high-performance pumping furnace hearth material |
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