CN103880451B - A kind of blast furnace swing spout mould material and preparation technology thereof - Google Patents
A kind of blast furnace swing spout mould material and preparation technology thereof Download PDFInfo
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- CN103880451B CN103880451B CN201410122399.0A CN201410122399A CN103880451B CN 103880451 B CN103880451 B CN 103880451B CN 201410122399 A CN201410122399 A CN 201410122399A CN 103880451 B CN103880451 B CN 103880451B
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Abstract
The invention discloses a kind of blast furnace swing spout mould material and preparation technology thereof, comprise following component and each constituent mass ratio is: alumina: 20 ~ 30 parts, alumine fine powder: 5 ~ 10 parts, mullite particle: 25 ~ 35 parts, mullite fine powder: 5 ~ 10 parts, plate diamond spar: 5 ~ 10 parts, active oxidation aluminium powder: 4 ~ 8 parts, silicon powder: 4 ~ 8 parts, steel fiber: 1 ~ 4 part, silicon sol: 2 ~ 5 parts, electric smelting Mg0 fine powder: 1 ~ 3 part; High-efficiency water-reducing agent of poly-carboxylic acid: 3 ~ 8 parts, the detonation suppressor mixed by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre: 0.5 ~ 2 part, oxidation inhibitor: 0.5 ~ 1 part, the present invention saves the carbonaceous component such as Brown Alundum, silicon carbide and pitch in traditional wobble stem bar mould material, prevent oxidized, introduce the lower mullite of coefficient of thermal expansion and in matrix, form mullite thing and strengthen thermal shock resistance mutually, improve high temperature break resistant intensity, compared with prior art, the present invention has better oxygen-proof property, explosion-proof and hot strength.
Description
[technical field]
The present invention relates to technical field of refractory materials, be specifically related to a kind of blast furnace swing spout mould material and preparation technology thereof.
[background technology]
Before State of Blast Furnace before not implementing desilication process, swinging flow jet mould material is Al
2o
3-SiC-C matter mould material liner.After the desiliconization of stokehold, the breakage of swinging flow jet liner is very serious, and the work-ing life of swinging flow jet significantly declines, and the major way analyzing its damage has: the impact of (1) molten iron is deteriorated: due to Al
2o
3the hot strength of-SiC-C material is lower, and the ability of opposing molten iron high temperature impact is more weak, and causing deteriorating comparatively fast, is the main damage form of this material, (2) thermal shocking circulated: cause material structural strength to reduce, (3) oxidation damage: the SiC of this system material and component C are easy to oxidized, especially the oxidation of component C, material structure is caused to loosen, strength degradation, it is the main reason of this system material damage, in the swinging flow jet mould material of simultaneously prior art, detonation suppressor is still to add aluminium powder, owing to being subject to the kind of aluminium powder, fineness, addition, the impact of the factor such as construction environment and curing temperature, make the mould material of interpolation metallic aluminium produce time of hydrogen and amount number uncontrollable, foaming can be produced, the problems such as micro mist floating, crack or blast slump will be there is time serious.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, proposes a kind of blast furnace swing spout mould material and preparation technology thereof, can meet the service requirements of swinging flow jet in current desilication process, improve hot strength, save conventional carbon component, strengthen oxygen-proof property, and improve explosion-proof performance.
For achieving the above object, the present invention proposes a kind of blast furnace swing spout mould material, comprise following component and each constituent mass ratio is: alumina: 20 ~ 30 parts, alumine fine powder: 5 ~ 10 parts, mullite particle: 25 ~ 35 parts, mullite fine powder: 5 ~ 10 parts, plate diamond spar: 5 ~ 10 parts, active oxidation aluminium powder: 4 ~ 8 parts, silicon powder: 4 ~ 8 parts, steel fiber: 1 ~ 4 part, silicon sol: 2 ~ 5 parts, electric smelting Mg0 fine powder: 1 ~ 3 part; High-efficiency water-reducing agent of poly-carboxylic acid: 3 ~ 8 parts, the detonation suppressor mixed by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre: 0.5 ~ 2 part, oxidation inhibitor: 0.5 ~ 1 part.
As preferably, described mullite particle by particle diameter for be more than or equal to 5mm and be less than 7mm part, particle diameter for be more than or equal to 3mm and be less than 5mm part, particle diameter for be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm part form, in mullite particle particle diameter be more than or equal to 5mm and be less than 7mm part, particle diameter be more than or equal to 3mm and be less than 5mm part, particle diameter be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm part mass ratio be 1:2:3:2.
As preferably, in described detonation suppressor, the mass ratio of azodicarbonamide foaming agent, Aluctyl and polypropylene fibre is 3:6:1.
As preferably, described oxidation inhibitor is metallic silicon power.
For achieving the above object, the invention allows for a kind of preparation technology of blast furnace swing spout mould material, comprise the steps:
A) by mullite particle by particle diameter for being more than or equal to 5mm and being less than 7mm, being more than or equal to 3mm and being less than 5mm, being more than or equal to 1mm and being less than 3mm and < 1mm and carry out level Four screening, after having screened by particle diameter be more than or equal to 5mm and be less than 7mm part, particle diameter be more than or equal to 3mm and be less than 5mm part, particle diameter be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm part mix by the mass ratio of 1:2:3:2, take 25 ~ 35 parts;
B) 20 ~ 30 parts of alumina are taken, 5 ~ 10 parts of alumine fine powders, 5 ~ 10 parts of mullite fine powders, 5 ~ 10 parts of plate diamond spars, 1 ~ 4 part of steel fiber with 4 ~ 8 parts of active oxidation aluminium powders and throw in whipping appts with step a) in stir together with the mullite particle that takes and mix for 10 ~ 15 minutes;
C) take 2 ~ 5 parts of silicon sol, 1 ~ 3 part of electric smelting Mg0 fine powder and 4 ~ 8 parts of silicon powders carry out pre-mixing in mixing device, throw in step b after pre-mixing) described in whipping appts in continue stirring 10 ~ 15 minutes;
D) by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre by 3:6:1 mass ratio throw in mixing device, carry out pre-mixing, take after having stirred 0.5 ~ 2 part and input to step c) described in whipping appts in;
E) take 0.5 ~ 1 part of metallic silicon power to throw in steps d as oxidation inhibitor and 3 ~ 8 parts of high-efficiency water-reducing agent of poly-carboxylic acid) described in whipping appts in continue stirring and obtain finished product in 20 ~ 30 minutes;
F) by the finished product sampling observation in e) step, finished product packing warehouse-in qualified after sampling observation.
As preferably, described step c) the pre-mixing time be 8 ~ 12 minutes.
As preferably, described steps d) the pre-mixing time be 4 ~ 8 minutes.
Beneficial effect of the present invention: the present invention saves Brown Alundum in traditional wobble stem bar mould material, the carbonaceous component such as silicon carbide and pitch, prevent oxidized, introduce the lower mullite of coefficient of thermal expansion and in matrix, form mullite thing and strengthen thermal shock resistance mutually, improve high temperature break resistant intensity, adopt high-efficiency water-reducing agent of poly-carboxylic acid, amount of water is effectively controlled, improve the flowing property of mould material, add the compactness of mould material, further increase normal temperature and hot strength, contribute to the construction and the demould time that regulate mould material, select mixing detonation suppressor, effectively preventing mould material generation crackle even bursts, compared with prior art, the present invention has better oxygen-proof property, explosion-proof and hot strength.
[embodiment]
Blast furnace swing spout mould material of the present invention, comprise following component and each constituent mass ratio is: alumina: 20 ~ 30 parts, alumine fine powder: 5 ~ 10 parts, mullite particle: 25 ~ 35 parts, mullite fine powder: 5 ~ 10 parts, plate diamond spar: 5 ~ 10 parts, active oxidation aluminium powder: 4 ~ 8 parts, silicon powder: 4 ~ 8 parts, steel fiber: 1 ~ 4 part, silicon sol: 2 ~ 5 parts, electric smelting Mg0 fine powder: 1 ~ 3 part, high-efficiency water-reducing agent of poly-carboxylic acid: 3 ~ 8 parts, by azodicarbonamide foaming agent, the detonation suppressor that Aluctyl and polypropylene fibre mix: 0.5 ~ 2 part, oxidation inhibitor: 0.5 ~ 1 part, described mullite particle by particle diameter for being more than or equal to 5mm and being less than 7mm part, particle diameter is for being more than or equal to 3mm and being less than 5mm part, particle diameter is for being more than or equal to 1mm and being less than 3mm part and particle diameter < 1mm part composition, in mullite particle, particle diameter is for being more than or equal to 5mm and being less than 7mm part, particle diameter is for being more than or equal to 3mm and being less than 5mm part, particle diameter is be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm mass ratio is partly 1:2:3:2, azodicarbonamide foaming agent in described detonation suppressor, the mass ratio of Aluctyl and polypropylene fibre is 3:6:1, described oxidation inhibitor is metallic silicon power.
The present invention saves the carbonaceous component such as Brown Alundum, silicon carbide and pitch in traditional wobble stem bar mould material, prevent oxidized, introduce the lower mullite of coefficient of thermal expansion and in matrix, form mullite thing and strengthen thermal shock resistance mutually, improve high temperature break resistant intensity, the present invention adopts silicon powder, Si-OH key (silica gel) mainly owing to being formed after silicon powder surface hydration, the micro mist reticulate chain structure that dehydration post polymerization and being formed firmly is closed by Si-OH bond is to provide bonding strength.But only adopt silicon powder to make bonding agent, the intensity of sample is lower, so introduce electric smelting Mg0 fine powder, relies on Si0
2the acting in conjunction of micro mist cohesion and Mg0 fine powder aquation realizes the setting and harden of mould material, and is the Coagulating binding based on silicon powder, and the Hydraulic binding of Mg0 fine powder is auxiliary, and the air-strength of mould material and baked strength are strengthened.The present invention adopts silicon sol to replace traditional fine aluminium acid salt cement, and silicon sol is a kind of colloidal solution, odorless, nontoxic, oyster white translucent liquid.Silicon sol is the disperse phase of nano level silica dioxide granule in water, and water is dispersion medium, mostly stable existence in alkaline environment.This nano level Si0
2colloidal particle have very high chemically reactive and good aggregation.Si0 in colloid
2be a kind of spheroidal particle of negative charge, be easy to dispersion, there is the light base of undersaturated residual bond and different bond styles in order surface, shows extremely strong activity, can be miscible with organic polymer.Mullite is that a series of mineral be made up of aluminosilicate are referred to as, these class mineral are more rare, mullite is the mineral that aluminosilicate at high temperature generates, mullite can be formed during Heat artificially aluminosilicate, natural mullite crystal is elongated needle-like and is radiation tufted, be used to produce high-temperature refractory, by adopting high-efficiency water-reducing agent of poly-carboxylic acid, mix water demand ratio ordinary water-reducing agent reduces more than 1%, amount of water reduces the flowing property improving mould material, add the compactness of mould material, improve normal temperature and the hot strength of mould material, contribute to regulating the construction of mould material and demould time adding of this water reducer simultaneously, solve winter low temperature environment construction difficult problem,
The preparation technology of blast furnace swing spout mould material of the present invention, comprises the steps:
A) by mullite particle by particle diameter for being more than or equal to 5mm and being less than 7mm, being more than or equal to 3mm and being less than 5mm, being more than or equal to 1mm and being less than 3mm and < 1mm and carry out level Four screening, after having screened by particle diameter be more than or equal to 5mm and be less than 7mm part, particle diameter be more than or equal to 3mm and be less than 5mm part, particle diameter be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm part mix by the mass ratio of 1:2:3:2, take 25 ~ 35 parts;
B) 20 ~ 30 parts of alumina are taken, 5 ~ 10 parts of alumine fine powders, 5 ~ 10 parts of mullite fine powders, 5 ~ 10 parts of plate diamond spars, 1 ~ 4 part of steel fiber with 4 ~ 8 parts of active oxidation aluminium powders and throw in whipping appts with step a) in stir together with the mullite particle that takes and mix for 10 ~ 15 minutes;
C) take 2 ~ 5 parts of silicon sol, 1 ~ 3 part of electric smelting Mg0 fine powder and 4 ~ 8 parts of silicon powders carry out pre-mixing in 8 ~ 12 minutes in mixing device, throw in step b after pre-mixing) described in whipping appts in continue stirring 10 ~ 15 minutes;
D) by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre by 3:6:1 mass ratio throw in mixing device, carry out pre-mixing in 4 ~ 8 minutes, take after having stirred 0.5 ~ 2 part and input to step c) described in whipping appts in;
E) take 0.5 ~ 1 part of metallic silicon power to throw in steps d as oxidation inhibitor and 3 ~ 8 parts of high-efficiency water-reducing agent of poly-carboxylic acid) described in whipping appts in continue stirring and obtain finished product in 20 ~ 30 minutes;
F) by the finished product sampling observation in e) step, finished product packing warehouse-in qualified after sampling observation.
Specific embodiments of the invention are:
Embodiment 1:
Above-mentioned each constituent mass ratio is: alumina: 20 parts, alumine fine powder: 5 parts, mullite particle: 25 parts, mullite fine powder: 5 parts, plate diamond spar: 5 parts, active oxidation aluminium powder: 4 parts, silicon powder: 4 parts, steel fiber: 1 part, silicon sol: 2 parts, electric smelting Mg0 fine powder: 1 part; High-efficiency water-reducing agent of poly-carboxylic acid: 3 parts, the detonation suppressor mixed by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre: 0.5 part, oxidation inhibitor: 0.5 part.
Embodiment 2:
Above-mentioned each constituent mass ratio is: alumina: 25 parts, alumine fine powder 8 parts, mullite particle: 30 parts, mullite fine powder: 7 parts, plate diamond spar: 8 parts, active oxidation aluminium powder: 6 parts, silicon powder: 6 parts, steel fiber: 2 parts, silicon sol: 3 parts, electric smelting Mg0 fine powder: 2 parts; High-efficiency water-reducing agent of poly-carboxylic acid: 5 parts, the detonation suppressor mixed by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre: 1 part, oxidation inhibitor: 0.8 part.
Embodiment 3:
Above-mentioned each constituent mass ratio is: alumina: 30 parts, alumine fine powder: 10 parts, mullite particle: 35 parts, mullite fine powder: 10 parts, plate diamond spar: 10 parts, active oxidation aluminium powder: 8 parts, silicon powder: 8 parts, steel fiber: 4 parts, silicon sol: 5 parts, electric smelting Mg0 fine powder: 3 parts; High-efficiency water-reducing agent of poly-carboxylic acid: 8 parts, the detonation suppressor mixed by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre: 2 parts, oxidation inhibitor: 1 part.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (7)
1. a blast furnace swing spout mould material, it is characterized in that: comprise following component and each constituent mass ratio is: alumina: 20 ~ 30 parts, alumine fine powder: 5 ~ 10 parts, mullite particle: 25 ~ 35 parts, mullite fine powder: 5 ~ 10 parts, plate diamond spar: 5 ~ 10 parts, active oxidation aluminium powder: 4 ~ 8 parts, silicon powder: 4 ~ 8 parts, steel fiber: 1 ~ 4 part, silicon sol: 2 ~ 5 parts, electric smelting Mg0 fine powder: 1 ~ 3 part; High-efficiency water-reducing agent of poly-carboxylic acid: 3 ~ 8 parts, the detonation suppressor mixed by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre: 0.5 ~ 2 part, oxidation inhibitor: 0.5 ~ 1 part.
2. a kind of blast furnace swing spout mould material as claimed in claim 1, it is characterized in that: described mullite particle by particle diameter for being more than or equal to 5mm and being less than 7mm part, particle diameter is for being more than or equal to 3mm and being less than 5mm part, particle diameter is for being more than or equal to 1mm and being less than 3mm part and particle diameter < 1mm part composition, in mullite particle, particle diameter is for being more than or equal to 5mm and being less than 7mm part, particle diameter is for being more than or equal to 3mm and being less than 5mm part, particle diameter is be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm mass ratio is partly 1:2:3:2.
3. a kind of blast furnace swing spout mould material as claimed in claim 1, is characterized in that: in described detonation suppressor, the mass ratio of azodicarbonamide foaming agent, Aluctyl and polypropylene fibre is 3:6:1.
4. a kind of blast furnace swing spout mould material as claimed in claim 1, is characterized in that: described oxidation inhibitor is metallic silicon power.
5. a preparation technology for blast furnace swing spout mould material, is characterized in that: comprise the steps:
A) by mullite particle by particle diameter for being more than or equal to 5mm and being less than 7mm, being more than or equal to 3mm and being less than 5mm, being more than or equal to 1mm and being less than 3mm and < 1mm and carry out level Four screening, after having screened by particle diameter be more than or equal to 5mm and be less than 7mm part, particle diameter be more than or equal to 3mm and be less than 5mm part, particle diameter be more than or equal to 1mm and be less than 3mm part and particle diameter < 1mm part mix by the mass ratio of 1:2:3:2, take 25 ~ 35 parts;
B) 20 ~ 30 parts of alumina are taken, 5 ~ 10 parts of alumine fine powders, 5 ~ 10 parts of mullite fine powders, 5 ~ 10 parts of plate diamond spars, 1 ~ 4 part of steel fiber with 4 ~ 8 parts of active oxidation aluminium powders and throw in whipping appts with step a) in stir together with the mullite particle that takes and mix for 10 ~ 15 minutes;
C) take 2 ~ 5 parts of silicon sol, 1 ~ 3 part of electric smelting Mg0 fine powder and 4 ~ 8 parts of silicon powders carry out pre-mixing in mixing device, throw in step b after pre-mixing) described in whipping appts in continue stirring 10 ~ 15 minutes;
D) by azodicarbonamide foaming agent, Aluctyl and polypropylene fibre by 3:6:1 mass ratio throw in mixing device, carry out pre-mixing, take after having stirred 0.5 ~ 2 part and input to step c) described in whipping appts in;
E) take 0.5 ~ 1 part of metallic silicon power to throw in steps d as oxidation inhibitor and 3 ~ 8 parts of high-efficiency water-reducing agent of poly-carboxylic acid) described in whipping appts in continue stirring and obtain finished product in 20 ~ 30 minutes;
F) by the finished product sampling observation in e) step, finished product packing warehouse-in qualified after sampling observation.
6. the preparation technology of a kind of blast furnace swing spout mould material as claimed in claim 5, is characterized in that: described step c) the pre-mixing time be 8 ~ 12 minutes.
7. the preparation technology of a kind of blast furnace swing spout mould material as claimed in claim 5, is characterized in that: described steps d) the pre-mixing time be 4 ~ 8 minutes.
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| CN104370560B (en) * | 2014-11-06 | 2016-08-24 | 朱小英 | A kind of preparation method of basket pouring material |
| CN104370561B (en) * | 2014-11-06 | 2016-08-17 | 朱小英 | A kind of basket pouring material |
| CN104761266B (en) * | 2015-03-16 | 2017-03-15 | 通达耐火技术股份有限公司 | A kind of fast toast spatter-proof iron runner castable and its using method |
| CN106702056A (en) * | 2016-11-28 | 2017-05-24 | 浙江锦诚新材料股份有限公司 | Iron tap channel swing spout prefabricated piece and manufacturing method thereof |
| 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 |
| EP3953123A4 (en) * | 2019-04-12 | 2022-11-16 | Carbicrete Inc. | Carbonation curing method to produce wet-cast slag-based concrete products |
| CN110342949B (en) * | 2019-08-12 | 2021-10-26 | 武汉市科达耐火有限责任公司 | Crack-resistant castable for swinging spout and pouring process |
| CN112028647A (en) * | 2020-08-25 | 2020-12-04 | 贵阳明通炉料有限公司 | High-performance sialon corundum plastic material and preparation method thereof |
| CN115611615B (en) * | 2022-09-20 | 2023-05-23 | 中冶武汉冶金建筑研究院有限公司 | High-alumina slurry and use method thereof |
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| CN102276274A (en) * | 2011-07-19 | 2011-12-14 | 中南大学 | Refractory castable for ladle |
| CN102584299B (en) * | 2012-03-06 | 2013-08-21 | 长兴煤山新型炉料有限公司 | LM-T desilication swinging runner castable |
| CN102659420A (en) * | 2012-03-22 | 2012-09-12 | 武汉科技大学 | Corundum pouring material for kilneye of cement kiln and using method thereof |
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