CN102992795A - Environment-friendly castable for blast furnace iron runners - Google Patents
Environment-friendly castable for blast furnace iron runners Download PDFInfo
- Publication number
- CN102992795A CN102992795A CN2013100045332A CN201310004533A CN102992795A CN 102992795 A CN102992795 A CN 102992795A CN 2013100045332 A CN2013100045332 A CN 2013100045332A CN 201310004533 A CN201310004533 A CN 201310004533A CN 102992795 A CN102992795 A CN 102992795A
- Authority
- CN
- China
- Prior art keywords
- parts
- environment
- blast furnace
- mould material
- iron runner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Ceramic Products (AREA)
Abstract
The invention belongs to the field of refractory materials, and mainly relates to an environment-friendly castable for blast furnace iron runners. The castable is composed of, by weight, 50 parts to 85 parts of corundum raw materials, 8 parts to 30 parts of silicon carbide based raw materials, 1 part to 10 parts of palletized carbon black, 2 parts to 6 parts of silica fume, 1 part to 5 parts of calcium aluminate cement, 0.3 part to 3 parts of antioxidants, 0.1 part to 0.3 part of water reducing agents, 0.01 part to 0.2 part of wetting agents and 3.2 parts to 5 parts of water. The environment-friendly castable has the advantages of being low in water addition, high in carbon content, compact in structure, large in hot strength and excellent in anti-scouring performance, not causing site environment pollution in a construction utilization process, and being environment-friendly.
Description
Technical field
The invention belongs to fire resisting material field, relate generally to a kind of environment-friendly type blast furnace iron runner mould material.
Background technology
Blast furnace iron runner is the passage that high temperature liquid iron and slag are flowed through, along with blast furnace to large scale development, iron influx increases, logical iron time lengthening, the pitch time of tapping a blast furnace is short, and blast furnace iron runner has been proposed harsher requirement with refractory materials.Present blast furnace iron runner adopts A12O3-SiC-C matter mould material to make usually, pelletted pitch as carbonaceous material can stop slag to the infiltration of material internal, improve the resistance to fouling of material, can also improve the thermal conductivity of material to improve thermal shock resistance, the structure spalling of lightening material and cracking, thereby the use properties of raising iron runner castable.
Document [pelletted pitch is on the impact of A12O3-SiC-C matter iron runner castable performance] (" refractory materials ", the 2nd phase of the 44th volume April in 2010) points out: infiltrate in the sample hole after an amount of pelletted pitch is softening in heat treatment process, can improve the anti-scour property of sample.But along with the pelletted pitch add-on is increased to 3wt%, oxidation of coal causes sample structure loose, and high temperature break resistant intensity reduces gradually, and the density of iron runner castable and flushing resistance begin to descend.
Document [carbon source is on the impact of A12O3-SiC-C matter casting house with the mould material performance] (" modern metallurgical ", the 39th in December, 2011 volume the 6th phase) has been studied ball pitch, coke and the carbon black materials of adding respectively about 3wt% are used the mould material performance on A12O3-SiC-C matter casting house impact.The result shows, when introducing ball pitch and coke are made carbon source, the apparent porosity of mould material is suitable, and when introducing carbon black, the apparent porosity of mould material obviously increases, at casting house with in the test of mould material, prolongation along with the mould material churning time, add the mould material workability variation of carbon black, need append behind the water could moulding, the mis-behave of material after the moulding.
At present, the carbon source that A12O3-SiC-C matter iron runner castable uses is commonly pelletted pitch or coke, and add-on is generally 1 ~ 3wt%.Yet pelletted pitch contains the benzopyrene component, can produce easily carcinogenic yellow dense smoke in the applied at elevated temperature process, has about 1% sulphur content and 1% volatile matter (various alkane and aromatic hydrocarbon) in the coke, and operator's health is produced threat.Therefore exploitation is lowly polluted, high performance mould material become blast furnace iron runner with the emphasis of mould material research.
Summary of the invention
The invention belongs to fire resisting material field, relate generally to a kind of environment-friendly type blast furnace iron runner mould material, be characterized in that amount of water is low, carbon content is high, compact structure, hot strength is large, anti-scour property is good, and does not cause site environment to pollute in the construction use procedure.
The environment-friendly type blast furnace iron runner mould material that the present invention is mentioned, consisting of by weight ratio: 50 ~ 85 parts of corundum raw materials, 8 ~ 30 parts of silicon carbide raw materials, 2 ~ 6 parts of silicon ashes, 1 ~ 5 part of aluminous cement, 0.3 ~ 3 part of oxidation inhibitor, 0.1 ~ 0.3 part of water reducer, 0.01 ~ 0.2 part of wetting agent, 3.2 ~ 5 parts in water; Adding in the described mould material has the granulation carbon black, and described granulation carbon black is powder spherical in shape, and carbon content is greater than 98%, and specific surface area is less than 12m
2/ g; The weight part that described granulation carbon black adds is 1 ~ 10 part.
The corundum raw material of mentioning during mould material forms can be one or more the mixture of arbitrary proportion in plate diamond spar, fused white corundum, fused brown corundum, electric smelting compact alumina, the sub-white corundum, and its granularity is＜20mm; The silicon carbide raw material of mentioning during mould material forms can be carborundum content greater than 98% black silicon carbide, content greater than one or both the mixture of arbitrary proportion in 90% the black silicon carbide, and its granularity is＜3mm.Corundum and silicon carbide raw material have consisted of the main body of blast furnace iron runner mould material, so that this mould material has preferably erosion-resisting characteristics and flushing resistance.
The granulation carbon black that the present invention is mentioned is characterized in that: granulation carbon black powder is spherical in shape, and carbon content is greater than 98%, and specific surface area is less than 12m
2/ g.
Commercially available ordinary carbon black is generally furnace treated black, and the carbon black particle diameter is about 10-80nm, and specific surface area is 30-130m
2/ g, surface energy is high, easily reunites, and dust pollution disperses greatly, difficult in the mould material system when being prone to batch mixing when being applied to mould material, easily segregation, amount of water are high, without shortcomings such as casting and constructing performances.
The granulation carbon black then is that to select diameter be that the thermo-cracking carbon black particle of 240-320nm carries out granulation, and the diameter that obtains is about the spherical powder of 0.2mm.Not segregation when this granulation carbon black is incorporated in the iron runner castable, reduction amount of water, and along with can in the iron runner castable system, continuing dispersion after the wetting and mechanical stirring of water, finally evenly be present in the mould material system.In addition, granulation carbon black diameter of particle is larger, ash oontent extremely low (0.2%), and pollution-free material volatilization is a kind of material of environment-friendly type in the use procedure; Moreover, owing to introduce workability and the density that the granulation carbon black can not affect iron runner castable, therefore can significantly improve the introducing amount of granulation carbon black, to improve heat-shock resistance and the slag resistance of iron runner castable.
Therefore, the present invention utilizes the granulation carbon black to have larger particle diameter, lower specific surface area, low structure, wider size distribution, the good performances such as dispersiveness, and it successfully is incorporated into the iron runner castable system, significantly improved heat-shock resistance, wear resistance, thermotolerance and the slag resistance of refractory materials.
The wetting agent that the present invention is mentioned can be one or more the mixture of arbitrary proportion in N1055, sodium polyacrylate and the tween-80.Carbon black materials generally is difficult to Uniform Dispersion in the refractory castable system because low, the lipophilicity of density is strong, poor with the wettability of water.The present invention is by adding above-mentioned wetting agent in mould material, the surfactant molecule that discharges after the wetting agent dissolving is adsorbed on the surface of carbon black, has changed the carbon blacksurface molecular polarity, makes it have wetting ability, thereby reduced the contact angle between liquid-solid, improved the wettability of carbon black in water.
The oxidation inhibitor that the present invention is mentioned can be one or more the mixture of arbitrary proportion of metallic aluminium, Pure Silicon Metal, norbide, and its granularity is＜0.088mm.Iron runner castable is in the applied at elevated temperature situation, and oxidizing reaction can occur gradually for the metallic aluminium of material surface, Pure Silicon Metal and norbide, thereby protection silicon carbide and carbon black are not oxidated, improves the slag resistance of material.
The mentioned silicon ash of the present invention is dioxide-containing silica greater than 92% fine silica powder.The mentioned aluminous cement of the present invention is aluminium sesquioxide content greater than 68% aluminate cement, for example the Secar71 cement of Lafarge SA.
The water reducer that the present invention is mentioned can be one or more the mixture of arbitrary proportion of tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, FS10.Water reducer can significantly reduce the water consumption of material, improves the density of mould material.
Environment-friendly type blast furnace iron runner involved in the present invention with the concrete using method of mould material is: after proportionally taking by weighing all raw materials beyond dewatering, in stirrer, mix, then adding a certain amount of water and mix, is environment-friendly type blast furnace iron runner mould material through vibratory compaction after mixing.
The environment-friendly type blast furnace iron runner mould material that contains the granulation carbon black proposed by the invention has the following advantages:
1, iron runner castable of the present invention is because not bituminous and resin, therefore in the applied at elevated temperature process without poisonous flue gas generation, be a kind of environment-friendly type refractory materials;
2, than the iron runner castable of routine, mould material of the present invention has reduced amount of water, has improved density and the intensity of material, has improved anti-spalling, flushing resistance and erosion-resisting characteristics;
3, the granulation carbon black carbon content of using among the present invention is high, and good with wettability, but the carbon content of Effective Raise blast furnace iron runner mould material, thus improve the use propertieies such as its slag resistance, heat-shock resistance.
Description of drawings
Fig. 1 is the anti-slag experiment crucible that the embodiment of the invention 2 mould material are made.
Embodiment
Below be embodiments of the invention, but these embodiment do not consist of the restriction to summary of the invention.
Plate diamond spar among the embodiment, fused white corundum, fused brown corundum, electric smelting compact alumina, sub-white corundum all belong to the corundum raw material in the summary of the invention.Wherein, plate diamond spar is the product of An Mai Chinalco, its specification is≤and each grade product of 6mm; Fused white corundum, fused brown corundum, electric smelting compact alumina, sub-white corundum are the product of Sanmenxia Gorge fused corundom limited liability company, its specification is≤and each grade product of 15mm.
" 90 silicon carbide " among the embodiment and " 98 silicon carbide " all belong to the silicon carbide raw material in the summary of the invention, " 90 silicon carbide " is carborundum content greater than 90% black silicon carbide, " 98 silicon carbide " is carborundum content greater than 98% black silicon carbide, being the product of river, shore silicon carbide company limited, specification is≤each grade product of 3mm.
N990 among the embodiment belongs to the granulation carbon black in the summary of the invention, is the product of Canadian cancarb company.
What the silicon ash among the embodiment used is " 970 SILICA FUME " that sky, Shanghai happy company produces; " Secar71 " among the embodiment belongs to the aluminate cement in the summary of the invention, is the product of Lafarge SA; Metallic aluminium among the embodiment, Pure Silicon Metal, norbide belong to the oxidation inhibitor in the summary of the invention, tripoly phosphate sodium STPP among the embodiment, Sodium hexametaphosphate 99, FS10 belong to the water reducer in the summary of the invention, N1055 among the embodiment, sodium polyacrylate and tween-80 belong to the wetting agent in the summary of the invention, are that Luoyang is anti-grinds the product that industry and trade company limited provides.
Embodiment 1-5
Take by weighing by weight ratio following each component:
Each component beyond dewatering is mixed in stirrer, add entry continuation stirring and can obtain the environment-friendly type iron runner castable.
Above-described embodiment detected result sees the following form:
Detected result by each embodiment can find out, introduce the granulation carbon black in the iron runner castable after, amount of water is lower, workability is good, and material structure is fine and close, and normal temperature strength and hot strength are higher, not causing site environment to pollute in the use procedure, is a kind of environment-friendly type iron runner castable.
Fig. 1 is the anti-slag experiment crucible that embodiment 2 mould material are made, and uses the blast furnace slag of iron work collection to carry out the anti-slag experiment.After 1450 ℃ of * 5h burnt, crucible inside was substantially not wetting by slag, and the slag resistance of material is excellent.
Claims (7)
1. environment-friendly type blast furnace iron runner mould material, described mould material consisting of by weight ratio: 50 ~ 85 parts of corundum raw materials, 8 ~ 30 parts of silicon carbide raw materials, 2 ~ 6 parts of silicon ashes, 1 ~ 5 part of aluminous cement, 0.3 ~ 3 part of oxidation inhibitor, 0.1 ~ 0.3 part of water reducer, 0.01 ~ 0.2 part of wetting agent, 3.2 ~ 5 parts in water; It is characterized in that: adding in the described mould material has the granulation carbon black, and described granulation carbon black is powder spherical in shape, and carbon content is greater than 98%, and specific surface area is less than 12m
2/ g; The weight part that described granulation carbon black adds is 1 ~ 10 part.
2. according to a kind of environment-friendly type blast furnace iron runner mould material claimed in claim 1, it is characterized in that: described corundum raw material is one or more the mixture of arbitrary proportion in plate diamond spar, fused white corundum, fused brown corundum, electric smelting compact alumina, the sub-white corundum, and its granularity is＜20mm.
3. according to a kind of environment-friendly type blast furnace iron runner mould material claimed in claim 1, it is characterized in that: described silicon carbide raw material is content greater than 98% black silicon carbide, content greater than one or both the mixture of arbitrary proportion in 90% the black silicon carbide, and its granularity is＜3mm.
4. according to a kind of environment-friendly type blast furnace iron runner mould material claimed in claim 1, it is characterized in that: described oxidation inhibitor is one or more the mixture of arbitrary proportion of metallic aluminium, Pure Silicon Metal, norbide, and its granularity is＜0.088mm.
5. according to a kind of environment-friendly type blast furnace iron runner mould material claimed in claim 1, it is characterized in that: described silicon ash is content greater than 92% fine silica powder.
6. according to a kind of environment-friendly type blast furnace iron runner mould material claimed in claim 1, it is characterized in that: described water reducer is one or more the mixture of arbitrary proportion of tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, FS10.
7. according to a kind of environment-friendly type blast furnace iron runner mould material claimed in claim 1, it is characterized in that: described wetting agent is one or more the mixture of arbitrary proportion in N1055, sodium polyacrylate and the tween-80.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100045332A CN102992795A (en) | 2013-01-07 | 2013-01-07 | Environment-friendly castable for blast furnace iron runners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100045332A CN102992795A (en) | 2013-01-07 | 2013-01-07 | Environment-friendly castable for blast furnace iron runners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102992795A true CN102992795A (en) | 2013-03-27 |
Family
ID=47921983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100045332A Pending CN102992795A (en) | 2013-01-07 | 2013-01-07 | Environment-friendly castable for blast furnace iron runners |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102992795A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588058A (en) * | 2016-12-26 | 2017-04-26 | 中钢集团耐火材料有限公司 | High-strength composite material for hot metal melting and large container working layers and preparation method thereof |
| CN107162605A (en) * | 2017-05-02 | 2017-09-15 | 长兴县煤山工业炉料有限公司 | A kind of preparation method of iron runner casting unshape refractory |
| CN107986765A (en) * | 2017-12-25 | 2018-05-04 | 中国京冶工程技术有限公司 | Blast furnace cracking resistance swing runner castable and preparation method thereof |
| CN108472722A (en) * | 2015-12-16 | 2018-08-31 | 凯得力法国公司 | Including zeolite type micro-structure pours refractory assemblies and application thereof |
| CN109797261A (en) * | 2018-12-25 | 2019-05-24 | 中国京冶工程技术有限公司 | Can Rapid-Repair high-performance sow and preparation method thereof and construction method |
| CN109851333A (en) * | 2018-12-25 | 2019-06-07 | 中国京冶工程技术有限公司 | Main trough of blast furnace Nano sol bonded wear-resistant plate and the preparation method and application thereof |
| CN111825434A (en) * | 2020-06-05 | 2020-10-27 | 长兴云峰炉料有限公司 | Environment-friendly Al2O3-SiC-Ti3SiC2Castable and preparation method thereof |
| CN112250458A (en) * | 2020-11-25 | 2021-01-22 | 中钢集团洛阳耐火材料研究院有限公司 | Silicon carbide wall-hanging brick joint filling material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101591179A (en) * | 2008-05-30 | 2009-12-02 | 北京通达耐火技术股份有限公司 | A kind of main trough of blast furnace slag line Al 2O 3The preparation method of-SiC-C mould material |
| JP2012006818A (en) * | 2010-06-28 | 2012-01-12 | Shinagawa Refractories Co Ltd | Method for producing carbon-containing monolithic refractory |
| CN102515804A (en) * | 2011-12-23 | 2012-06-27 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of MgO-C castable |
-
2013
- 2013-01-07 CN CN2013100045332A patent/CN102992795A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101591179A (en) * | 2008-05-30 | 2009-12-02 | 北京通达耐火技术股份有限公司 | A kind of main trough of blast furnace slag line Al 2O 3The preparation method of-SiC-C mould material |
| JP2012006818A (en) * | 2010-06-28 | 2012-01-12 | Shinagawa Refractories Co Ltd | Method for producing carbon-containing monolithic refractory |
| CN102515804A (en) * | 2011-12-23 | 2012-06-27 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of MgO-C castable |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108472722A (en) * | 2015-12-16 | 2018-08-31 | 凯得力法国公司 | Including zeolite type micro-structure pours refractory assemblies and application thereof |
| US11130711B2 (en) | 2015-12-16 | 2021-09-28 | Imertech Sas | Castable refractory compositions comprising zeolithic microstructures and uses thereof |
| CN106588058A (en) * | 2016-12-26 | 2017-04-26 | 中钢集团耐火材料有限公司 | High-strength composite material for hot metal melting and large container working layers and preparation method thereof |
| CN107162605A (en) * | 2017-05-02 | 2017-09-15 | 长兴县煤山工业炉料有限公司 | A kind of preparation method of iron runner casting unshape refractory |
| CN107986765A (en) * | 2017-12-25 | 2018-05-04 | 中国京冶工程技术有限公司 | Blast furnace cracking resistance swing runner castable and preparation method thereof |
| CN107986765B (en) * | 2017-12-25 | 2020-05-12 | 中国京冶工程技术有限公司 | Anti-cracking swinging launder castable for blast furnace and preparation method thereof |
| CN109797261A (en) * | 2018-12-25 | 2019-05-24 | 中国京冶工程技术有限公司 | Can Rapid-Repair high-performance sow and preparation method thereof and construction method |
| CN109851333A (en) * | 2018-12-25 | 2019-06-07 | 中国京冶工程技术有限公司 | Main trough of blast furnace Nano sol bonded wear-resistant plate and the preparation method and application thereof |
| CN109851333B (en) * | 2018-12-25 | 2021-12-07 | 中国京冶工程技术有限公司 | Nano sol combined wear-resisting plate for blast furnace main iron runner and preparation method and application thereof |
| CN109797261B (en) * | 2018-12-25 | 2023-12-22 | 中国京冶工程技术有限公司 | High-performance main iron runner capable of being quickly repaired, and preparation method and construction method thereof |
| CN111825434A (en) * | 2020-06-05 | 2020-10-27 | 长兴云峰炉料有限公司 | Environment-friendly Al2O3-SiC-Ti3SiC2Castable and preparation method thereof |
| CN112250458A (en) * | 2020-11-25 | 2021-01-22 | 中钢集团洛阳耐火材料研究院有限公司 | Silicon carbide wall-hanging brick joint filling material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102992795A (en) | Environment-friendly castable for blast furnace iron runners | |
| Yi et al. | An overview of utilization of steel slag | |
| CN104909771B (en) | Aluminous cement combined corundum matter castable and preparation method thereof | |
| CN103382116B (en) | Zirconium-containing high-strength wear-resistant castable | |
| CN107352977A (en) | A kind of slag line brick for ladle and preparation method | |
| CN103224402A (en) | Corundum-spinel casting material for dip pipe of RH refining furnace | |
| KR102633480B1 (en) | Improved slag from non-ferrous metal manufacturing | |
| CN110451934A (en) | A kind of Large face repair material of converter | |
| CN106045529A (en) | Iron runner castable containing 80% of waste refractories or above | |
| CN101913890B (en) | Tap hole clay for recycled material high blast furnace and preparation method thereof | |
| CN104557086A (en) | Magnesium-enriched spinel carbon brick for slag-out side of wall of steel ladle and preparation method of magnesium-enriched spinel carbon brick | |
| CN106673677A (en) | Environment-friendly anhydrous stemming for submerged arc furnace and preparation method | |
| CN105385848A (en) | Preparation method of iron ore powder pelletized magnesian binding agent | |
| CN103332940A (en) | Semi-rebonded magnesite-chrome brick for copper smelter and preparation method thereof | |
| CN104140276A (en) | Blast furnace taphole stemming and preparation method thereof | |
| CN101654371A (en) | Magnesium aluminum spinel-corundum-Sialon complex phase high-temperature resistant material and preparation method thereof | |
| CN103601379B (en) | A kind of outer high calcium slag sand of throwing calcines phase-splitting grog technique | |
| CN105753490A (en) | Tap hole medium-temperature-sintering environment-friendly stemming for large- and medium-sized blast furnaces and preparation method of tap hole medium-temperature-sintering environment-friendly stemming | |
| CN105218111A (en) | Anhydrous stemming | |
| Glazev et al. | Environmental technologies in the production of metallurgical silicon | |
| CN103396136B (en) | Stemming for super-huge type blast furnace and preparation method thereof | |
| CN106866118A (en) | One kind does not burn high-purity magnesia-calcium brick and preparation method thereof | |
| CN103159449A (en) | Heat-resistant concrete prepared by blast furnace dry slag | |
| CN108558362B (en) | Inorganic binder combined multi-solid waste high-mixing-amount environment-friendly stemming | |
| JP5650903B2 (en) | Spray repair material using used brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |