CN103626506A - Environment-friendly hot patching material for converter - Google Patents
Environment-friendly hot patching material for converter Download PDFInfo
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- CN103626506A CN103626506A CN201310656977.4A CN201310656977A CN103626506A CN 103626506 A CN103626506 A CN 103626506A CN 201310656977 A CN201310656977 A CN 201310656977A CN 103626506 A CN103626506 A CN 103626506A
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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, relate in particular to a kind of coverter pig environment-friendly type thermal repairing material.
Background technology
Refractory materials as iron and steel enterprise, produce in an indispensable part, the how many and cost of its consumption just affects the economic benefit of iron and steel enterprise.Be accompanied by China's continuous increase of iron and steel output in recent years, the usage quantity of refractory materials is also in continuous rising, and this has not only increased the production cost of iron and steel, has also caused 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 had also obtained 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 is just used and has been gone up magnesia carbon brick from the eighties, after local damage, by the position spray repairs such as slag line, gudgeon are keeped in repair, spatters slag fettling several years ago from external introduction, and converter lining life is significantly improved.But, because smelting condition is severe, while particularly proceeding to molten iron and steel scrap, to the mechanical impact of large face of converter and washing away, make local damage, cause the converter lining life-span can not be synchronous.Traditional method for repairing and mending is to use tar dolomite sand pitch (the loose shape repair material that the material such as magnesia aggregate, fine powder, combined binder, sinter machine, heat-generating agent, the liquid agent evenly mixes) hot mending material of living, but sintering time length, poor fluidity, work-ing life are short, seriously polluted, to repairing, have brought difficulty.
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 be high, it is little to pollute.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A coverter pig environment-friendly type thermal repairing material, is characterized in that, comprises that following compositions in weight percentage mixes:
95 medium-grade magnesite MgO:95%, particle volume density>=3.25g/cm
3, make respectively A, B, tri-kinds of granularities of C:
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 to take the light-burning magnesium powder that content of magnesia is 95%～97% be raw material.
Compared with prior art, the invention has the beneficial effects as follows:
1) temperature flowing of the present invention is good, and levelling is fast automatically, and setting time is short, and cohesive strength is high, long service life, and environmental pollution is little.
2) the present invention does not contain the impurity that pollutes 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 that following compositions in weight percentage mixes:
95 medium-grade magnesite MgO:95%, particle volume density>=3.25g/cm
3.Make respectively A, B, tri-kinds of granularities of C:
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 to take the light-burning magnesium powder that content of magnesia is 95%～97% be raw material.
Embodiment 1:
Its each feed composition is composed as follows by weight percentage: 95 medium-grade magnesites are made respectively A, B, tri-kinds of granularities of C, 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, these fine powders of highly-purity magnesite powder (240 order) are dropped into premixing machine and carry out premix after 30～35 minutes, standby;
2) A, B, tri-kinds of aggregates of C are pressed respectively to per-cent separately and dropped into mixer, carry out mixing 5～8 minutes;
3) in mixing aggregate, add diesel oil, aggregate is soaked, continue to stir 10～12 minutes;
4) pre-mixed fine powder compound input mixer and aggregate are carried out to 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 are made respectively A, B, tri-kinds of granularities of C, 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 are that to take the light-burning magnesium powder that content of magnesia is 95%～97% be raw material, through explained hereafter such as pressure ball, high temperature vertical kiln calcinings, form, and product sintering degree is good, compact crystallization.Carbon containing resin-oatmeal has mobility under the effect of high temperature, contributes to improve the sticking power of thermal repairing material; P-tert-butylphenol, in use spreading property is better, is conducive to the dispersion of Gunning refractory, and at the use initial stage, can reduce the fusing point of Gunning refractory, promotes its Fast Sintering; Iron oxide red, the sintering of promotion Gunning refractory, the sticking power of enhancing Gunning refractory; Diesel oil, has combustion-supporting effect; Carbon in silicon carbide it and carbon containing resin-oatmeal is all for the ferric oxide in reduced blast furnace, thereby 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 that following compositions in weight percentage mixes:
95 medium-grade magnesite MgO:95%, particle volume density>=3.25g/cm
3, make respectively A, B, tri-kinds of granularities of C:
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 orders: 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 to take the light-burning magnesium powder that content of magnesia is 95%～97% be raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201310656977.4A CN103626506B (en) | 2013-12-04 | 2013-12-04 | Environment-friendly hot patching material for converter |
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| CN103626506A true CN103626506A (en) | 2014-03-12 |
| CN103626506B CN103626506B (en) | 2015-04-15 |
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| CN201310656977.4A Active CN103626506B (en) | 2013-12-04 | 2013-12-04 | Environment-friendly hot patching material for converter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105645970A (en) * | 2015-12-29 | 2016-06-08 | 鞍山市和丰耐火材料有限公司 | Environment-friendly type long-life fettling sand and production method thereof |
| CN105669224A (en) * | 2016-01-14 | 2016-06-15 | 辽宁科技大学 | Refractory material for online repairing of torpedo car's impact zone and application thereof |
| 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 |
| CN110256051A (en) * | 2019-04-30 | 2019-09-20 | 郑州金利窑炉工程有限公司 | A kind of converter fettling material and preparation method thereof |
| CN111187088A (en) * | 2020-02-14 | 2020-05-22 | 海城市中昊镁业有限公司 | Technology 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 |
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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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| 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)
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| 孟庆民 等: "转炉用热修补料的研制和应用", 《炼钢》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645970A (en) * | 2015-12-29 | 2016-06-08 | 鞍山市和丰耐火材料有限公司 | Environment-friendly type long-life fettling sand and production method thereof |
| 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 |
| CN105669224A (en) * | 2016-01-14 | 2016-06-15 | 辽宁科技大学 | Refractory material for online repairing of torpedo car's impact zone and application thereof |
| 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 |
| CN110256051A (en) * | 2019-04-30 | 2019-09-20 | 郑州金利窑炉工程有限公司 | A kind of converter fettling material and preparation method thereof |
| CN111187088A (en) * | 2020-02-14 | 2020-05-22 | 海城市中昊镁业有限公司 | Technology 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103626506B (en) | 2015-04-15 |
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Address after: 114213 grass Town, Haicheng, Liaoning Province Applicant after: Haicheng City Jin Fu cutting edge of a knife or a sword Science and Technology Ltd. Address before: 114213, Anshan, Liaoning province Haicheng City, Britain Town grass village Applicant before: HAICHENG JINFUFENG REFRACTORY MATERIAL CO., LTD. |
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