CN103626506B - Environment-friendly hot patching material for converter - Google Patents
Environment-friendly hot patching material for converter Download PDFInfo
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- CN103626506B CN103626506B CN201310656977.4A CN201310656977A CN103626506B CN 103626506 B CN103626506 B CN 103626506B CN 201310656977 A CN201310656977 A CN 201310656977A CN 103626506 B CN103626506 B CN 103626506B
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Abstract
The invention discloses an environment-friendly hot patching material for a converter. The hot patching material is an unshaped refractory for large-surface hot fettling of the converter and is a loose, dry and uniform aggregate prepared by using 95-type intermediate magnesia as a raw material, carbon-containing resin powder as a binding agent, and then mixing, grinding and stirring. When used, the hot patching material is directly poured at the part to be patched on the large surface of the converter; under the action of gravity and temperature, the material flows automatically, levels up and is sintered. The hot patching material solves the technical problems that the existing patching material for the large surface of the converter is long in sintering time and short in service life and emits black smoke. Compared with the prior art, the environment-friendly hot patching material has the benefits that the hot patching material is good in high temperature liquidity, quick in automatic flowing and leveling up, short in hardening time, high in bonding strength, long in service life and small in environment pollution; the material is free from impurities polluting molten steel, high in magnesium oxide content, and can reduce ferric oxide content; furthermore, the mix is good in sintering capability and thermal shock resistance, and strong in adhesive force.
Description
Technical field
The present invention relates to repair material field, particularly relate to a kind of coverter pig environment-friendly type thermal repairing material.
Background technology
Refractory materials produce as iron and steel enterprise in an indispensable part, the how many and cost height of its consumption affects the economic benefit of iron and steel enterprise.Along with the continuous increase of China's iron and steel output in recent years, the usage quantity of refractory materials, also in continuous rising, this not only adds the production cost of iron and steel, also result in a large amount of consumption of national resources.Converter in use needs to repair, and in recent years, the research of domestic converter repair technology and raw material also achieved significant progress, but the consumption of repair material is large, and cost is high, also affect always iron and steel enterprise production cost.
China's converter just uses from the eighties and has gone up magnesia carbon brick, after local damage, by the position such as slag line, gudgeon spray repair maintenance, spatters slag fettling several years ago, converter lining life is significantly improved from external introduction.But, because smelting condition is severe, when particularly proceeding to molten iron and steel scrap, to the mechanical impact of large face of converter with wash away, make local damage, cause the converter lining life-span can not be synchronous.Traditional method for repairing and mending uses tar dolomite stone sand to live pitch (the loose shape repair material that the homogenize material such as magnesia aggregate, fine powder, combined binder, sinter machine, heat-generating agent, liquid agent mixes) hot mending material, but sintering time length, poor fluidity, work-ing life are short, seriously polluted, bring difficulty to repairing.
Summary of the invention
The object of this invention is to provide a kind of coverter pig environment-friendly type thermal repairing material, overcome the deficiencies in the prior art, containing the impurity harmful to molten steel, easy-sintering, intensity is high, pollute little.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of coverter pig environment-friendly type thermal repairing material, is characterized in that, comprise following compositions in weight percentage and mix:
95 medium-grade magnesite MgO:95%, particle volume density>=3.25g/cm
3, make A, B, C tri-kinds of granularities respectively:
Wherein: 3 < A≤8mm0 ~ 15%, do not comprise 0;
1＜B≤3mm35～25%；
0＜C≤1mm22～20%；
Carbon containing resin-oatmeal: 15%;
P-tert-butylphenol: 0.5% ~ 1.5%;
Iron oxide red: 1.5%;
Diesel oil: 1.5%;
Silicon carbide (325 order): 1% ~ 2%;
97 highly-purity magnesite powder (240 order): 11%.
95 described medium-grade magnesites are that the light-burning magnesium powder of 95% ~ 97% is for raw material with content of magnesia.
Compared with prior art, the invention has the beneficial effects as follows:
1) temperature flowing of the present invention is good, and automatic levelling is fast, and setting time is short, and cohesive strength is high, long service life, and environmental pollution is little.
2) the present invention is not containing the impurity polluting molten steel, and content of magnesia is high, can reduce the content of ferric oxide.
3) easy-sintering, good thermal shock, strong adhesion.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
Coverter pig environment-friendly type thermal repairing material, comprises following compositions in weight percentage and mixes:
95 medium-grade magnesite MgO:95%, particle volume density>=3.25g/cm
3.Make A, B, C tri-kinds of granularities respectively:
Wherein: 3 < A≤8mm0 ~ 15%;
1＜B≤3mm35～25%；
0＜C≤1mm22～20%；
Carbon containing resin-oatmeal: 15%;
P-tert-butylphenol: 0.5% ~ 1.5%;
Iron oxide red: 1.5%;
Diesel oil: 1.5%;
Silicon carbide (325 order): 1% ~ 2%;
97 highly-purity magnesite powder (240 order): 11%; 95 medium-grade magnesites are that the light-burning magnesium powder of 95% ~ 97% is for raw material with content of magnesia.
Embodiment 1:
Its each feed composition is composed as follows by weight percentage: 95 medium-grade magnesites make A, B, C tri-kinds of granularities respectively, wherein: 3 < A≤8mm12%; 1 < A≤3mm35%; 0 < A≤1mm22%; Carbon containing resin-oatmeal: 15%; P-tert-butylphenol: 1.5%; Iron oxide red: 1.5%; Diesel oil: 1.5%; Silicon carbide (325 order): 2%; 97 highly-purity magnesite powder (240 order): 11%.
The production method of above-mentioned coverter pig environment-friendly type thermal repairing material, concrete operation step is as follows:
1) carbon containing resin-oatmeal p-tert-butylphenol, iron oxide red, carbon containing resin-oatmeal, silicon carbide (325 order) 97, highly-purity magnesite powder (240 order) these fine powders are dropped into premixing machine and carry out premix after 30 ~ 35 minutes, for subsequent use;
2) A, B, C tri-kinds of aggregates are dropped into mixer by respective per-cent respectively, carry out mixing 5 ~ 8 minutes;
3) in mixing aggregate, add diesel oil, aggregate is soaked, continue stirring 10 ~ 12 minutes;
4) fine powder compound mixed in advance input mixer and aggregate are carried out sufficient mix and blend 35 ~ 40 minutes, discharging.
Embodiment 2
Its each feed composition is composed as follows by weight percentage: 95 medium-grade magnesites make A, B, C tri-kinds of granularities respectively, wherein: 3 < A≤8mm15%; 1 < B≤3mm35%; 0 < C≤1mm20%; Carbon containing resin-oatmeal: 15%; P-tert-butylphenol: 1%; Iron oxide red: 1.5%; Diesel oil: 1.5%; Silicon carbide (325 order): 1.5%; 97 highly-purity magnesite powder (240 order): 11%.
Production method is with embodiment 1.
95 medium-grade magnesites be with content of magnesia be the light-burning magnesium powder of 95% ~ 97% for raw material, form through explained hereafter such as pressure ball, high temperature vertical kiln calcinings, product degree of sintering is good, compact crystallization.Carbon containing resin-oatmeal, has mobility under the effect of high temperature, contributes to the sticking power improving thermal repairing material; P-tert-butylphenol, in use spreading property is better, is conducive to the dispersion of Gunning refractory, and can reduces the fusing point of Gunning refractory at the use initial stage, promote its Fast Sintering; Iron oxide red, promotes the sintering of Gunning refractory, strengthens the sticking power of Gunning refractory; Diesel oil, has combustion-supporting effect; Carbon in silicon carbide it and carbon containing resin-oatmeal is all in order to the ferric oxide in reduced blast furnace, thus improves slag viscosity, is conducive to slag splashing; 97 highly-purity magnesite powder, effect is to improve the content of magnesia in slag, reduces the content of ferric oxide.
Claims (2)
1. a coverter pig environment-friendly type thermal repairing material, is characterized in that, comprises following compositions in weight percentage and mixes: 95 medium-grade magnesite MgO:95%, particle volume density>=3.25g/cm
3, make A, B, C tri-kinds of granularities respectively, each component sum is 100%:
Wherein: 3 < A≤8mm 0 ~ 15%, do not comprise 0;
1＜B≤3mm 25～35％；
0＜C≤1mm 20～22％；
Carbon containing resin-oatmeal: 15%;
P-tert-butylphenol: 0.5% ~ 1.5%;
Iron oxide red: 1.5%;
Diesel oil: 1.5%;
Silicon carbide 325 order: 1% ~ 2%;
97 highly-purity magnesite powder 240 orders: 11%.
2. a kind of coverter pig environment-friendly type thermal repairing material according to claim 1, is characterized in that, 95 described medium-grade magnesites are that the light-burning magnesium powder being 95% ~ 97% with content of magnesia is prepared from for raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310656977.4A CN103626506B (en) | 2013-12-04 | 2013-12-04 | Environment-friendly hot patching material for converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310656977.4A CN103626506B (en) | 2013-12-04 | 2013-12-04 | Environment-friendly hot patching material for converter |
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| CN103626506A CN103626506A (en) | 2014-03-12 |
| CN103626506B true CN103626506B (en) | 2015-04-15 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645970B (en) * | 2015-12-29 | 2018-02-09 | 鞍山市和丰耐火材料有限公司 | The fettling sand and its production method of a kind of environment-friendly type high life |
| CN105503220A (en) * | 2016-01-04 | 2016-04-20 | 攀枝花顺腾集团冶金材料有限公司 | Rapid self-flowing repairing mass preparation method |
| CN105669224B (en) * | 2016-01-14 | 2018-03-30 | 辽宁科技大学 | A kind of refractory material of online repairing torpedo tank car impact zone and its application |
| CN106915951A (en) * | 2017-04-01 | 2017-07-04 | 海城市中兴镁质合成材料有限公司 | A kind of environment-friendly composite mending material and preparation method thereof |
| CN109928735A (en) * | 2019-04-30 | 2019-06-25 | 巩义市金利炉料厂 | A kind of converter fettling material and preparation method thereof |
| CN111187088B (en) * | 2020-02-14 | 2022-06-07 | 海城市中昊镁业有限公司 | Method for preparing high thermal shock magnesia raw material by compounding medium-grade magnesia and fused magnesia |
| CN113651601A (en) * | 2021-09-13 | 2021-11-16 | 济南鲁东耐火材料有限公司 | Converter with replaceable converter bottom and construction method for primary building |
| CN116751067A (en) * | 2023-06-21 | 2023-09-15 | 武汉科技大学 | Water-based large fabric for converter and preparation method thereof |
Citations (3)
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| CN1654431A (en) * | 2005-01-13 | 2005-08-17 | 武汉钢铁(集团)公司 | Fireproof materials for pressed repairing and method for preparing same |
| CN101913893A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Hot patching material for large face of converter |
| CN103397138A (en) * | 2013-08-08 | 2013-11-20 | 首钢京唐钢铁联合有限责任公司 | Patching method for furnace lining of revolving furnace steel tapping hole part |
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2013
- 2013-12-04 CN CN201310656977.4A patent/CN103626506B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654431A (en) * | 2005-01-13 | 2005-08-17 | 武汉钢铁(集团)公司 | Fireproof materials for pressed repairing and method for preparing same |
| CN101913893A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Hot patching material for large face of converter |
| CN103397138A (en) * | 2013-08-08 | 2013-11-20 | 首钢京唐钢铁联合有限责任公司 | Patching method for furnace lining of revolving furnace steel tapping hole part |
Non-Patent Citations (1)
| Title |
|---|
| 转炉用热修补料的研制和应用;孟庆民 等;《炼钢》;20030630;第19卷(第3期);42-45 * |
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