CN105198460A - Compact clay brick for blast furnace - Google Patents
Compact clay brick for blast furnace Download PDFInfo
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- CN105198460A CN105198460A CN201510649925.3A CN201510649925A CN105198460A CN 105198460 A CN105198460 A CN 105198460A CN 201510649925 A CN201510649925 A CN 201510649925A CN 105198460 A CN105198460 A CN 105198460A
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- blast furnace
- basic unit
- layer
- heat insulating
- insulating porous
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- Blast Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention provides a compact clay brick for a blast furnace, which comprises a substrate, wherein the substrate comprises a central base layer and a compact layer arranged on the upper surface of the base layer; a micro-porous insulating layer is arranged on the lower surface of the base layer; the thickness of the micro-porous insulating layer is 1/3 of the thickness of the base layer; the thickness of the compact layer is 1/5 of the thickness of the base layer; blind holes of which the hole diameters are 10-15mm are uniformly distributed in the surface of the base layer; and cement paste is poured in the blind holes. The compact clay brick is formed at high pressure and high temperature and is firm in structure, low in cost, resistant to high temperature and good in thermal stability.
Description
Technical field
The present invention relates to fire resisting material field, particularly relate to blast furnace clay brick.
Background technology
Along with the development of modern smelting technology, blast furnace is the major equipment of ironmaking, and clay brick is the inner lining material that blast furnace uses the earliest.The 1950's starts, furnace volume keeps the large-scale development, 8 12m diameter cupola wells are comparatively general, productivity improves rapidly. but shaft refractory brick and the erosion of bosh refractory brick affect blast fumance significantly, and traditional clay brick is because its void content is comparatively up to about 20%, be not suitable for using on existing blast furnace.Therefore develop a kind of novel high-performance leck brick to carry out alternative original clay brick and become the primary goal of present stage, technique center assume responsibility for the research and development task of this product therefrom.Calculate with Current Domestic iron and steel output, consuming clay brick 0.13 kilogram calculating with ton iron then has immeasurable market outlook.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of high pressure-temperature shaping, firm in structure, with low cost, high temperature resistant, the blast furnace leck brick that thermal stability is good.
For realizing the object of the invention, provide following technical scheme: blast furnace leck brick, it is characterized in that comprising matrix, comprise the basic unit at center and be arranged at the tight zone of basic unit's upper surface, basic unit's lower surface is provided with heat insulating porous layer, and heat insulating porous layer thickness is 1/3 of basic unit, and dense layer thickness is 1/5 of basic unit, substrate surface is evenly equipped with the blind hole that aperture is 10mm ~ 15mm, has built cement slurry in blind hole.
As preferably, described basic unit is formed by yellow sand and water high temperature sintering.
As preferably, tight zone and basic unit's high-temperature high-pressure are connected into type.
As preferably, heat insulating porous layer is that plant ash and clay mixed sintering form.
As preferably, the micropore of heat insulating porous layer is irregular holes.
As preferably, tight zone comprises the andaluzite sintered layer of outer field flint clay sintered layer and internal layer.
Beneficial effect of the present invention: the physical and chemical index of clay brick of the present invention: Al2O3 >=45%Fe2O3≤1.0% volume density >=2.5g/cm3 apparent porosity≤13% cold crushing strength >=65MPa thermal shock resistance (1100 DEG C of water-cooleds) is greater than 30 times.
Every physical and chemical index is all apparently higher than unselected clay product, and this product obviously will be grown for work-ing life on blast furnace, and energy-saving effect is obvious.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Embodiment 1: blast furnace leck brick, comprise matrix 1, comprise the basic unit 1.1 at center and be arranged at the tight zone 1.2 of basic unit 1.1 upper surface, basic unit 1.1 lower surface is provided with heat insulating porous layer 1.3, heat insulating porous layer 1.3 thickness is 1/3 of basic unit 1.1, tight zone 1.2 thickness is 1/5 of basic unit 1.1, and basic unit 1.1 surface is evenly equipped with the blind hole 1.1.1 that aperture is 10mm ~ 15mm, has built cement slurry 2 in blind hole 1.1.1.Described basic unit 1.1 is formed by yellow sand and water high temperature sintering.Tight zone 1.2 and basic unit 1.1 high-temperature high-pressure are connected into type.Heat insulating porous layer 1.3 forms for plant ash and clay mixed sintering.
The micropore of heat insulating porous layer 1.3 is irregular holes.Tight zone 1.2 comprises the andaluzite sintered layer 1.2.2 of outer field flint clay sintered layer 1.2.1 and internal layer.
Make tight zone of the present invention and adopt salic 45% superfine flint clay, because it has less glassy phase.Next selects one-level andaluzite, and the oxious component reduced further in raw material improves refractoriness under load and the thermal shock resistance of product.
Superfine flint clay has good thermostability and lower apparent porosity, pressing machine separately through 630t height tonnage carries out suppressing (every square centimeter reaches more than 1500kg), thus improve the volume density of product, reduce its apparent porosity, improve compressive strength and the product series of physicochemical index of product.
Firing of product, product forms through the high-temperature firing of more than 1400 DEG C after seasoning again, thus ensure that the refractoriness under load of product is greater than 1500 DEG C, compressive strength is greater than 65Mpa, thermal shock resistance (1100 DEG C of water-cooleds) is greater than 30 times, guarantees that product in use has a series of performances such as resistant to corrosion, high RUL, anti-thermal shock like this.
Claims (6)
1. blast furnace leck brick, it is characterized in that comprising matrix, comprise the basic unit at center and be arranged at the tight zone of basic unit's upper surface, basic unit's lower surface is provided with heat insulating porous layer, heat insulating porous layer thickness is 1/3 of basic unit, dense layer thickness is 1/5 of basic unit, and substrate surface is evenly equipped with the blind hole that aperture is 10mm ~ 15mm, has built cement slurry in blind hole.
2. blast furnace leck brick according to claim 1, is characterized in that described basic unit is formed by yellow sand and water high temperature sintering.
3. blast furnace leck brick according to claim 1, is characterized in that tight zone and basic unit's high-temperature high-pressure are connected into type.
4. blast furnace leck brick according to claim 1, is characterized in that heat insulating porous layer is that plant ash and clay mixed sintering form.
5. blast furnace leck brick according to claim 1, is characterized in that the micropore of heat insulating porous layer is irregular holes.
6. blast furnace leck brick according to claim 1, is characterized in that tight zone comprises the andaluzite sintered layer of outer field flint clay sintered layer and internal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649925.3A CN105198460A (en) | 2015-10-10 | 2015-10-10 | Compact clay brick for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649925.3A CN105198460A (en) | 2015-10-10 | 2015-10-10 | Compact clay brick for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105198460A true CN105198460A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510649925.3A Pending CN105198460A (en) | 2015-10-10 | 2015-10-10 | Compact clay brick for blast furnace |
Country Status (1)
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| CN (1) | CN105198460A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680024A (en) * | 2018-05-18 | 2018-10-19 | 武汉钢铁有限公司 | A kind of compound masonry construction of the full clay checker brick of coke oven regenerator |
| CN111320462A (en) * | 2020-04-09 | 2020-06-23 | 郑州正仟新材料有限公司 | Compact clay brick and preparation method thereof |
| CN116375484A (en) * | 2023-02-21 | 2023-07-04 | 郑州大学 | Light high-strength layered refractory material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105161A (en) * | 1986-08-10 | 1987-02-11 | 辽宁省鞍山市陶瓷七厂 | A kind of composite heat-insulating shield |
| CN102285812A (en) * | 2011-06-06 | 2011-12-21 | 浙江大学 | Magnesium-aluminium-titanium structure and thermal insulation integrated composite brick and preparation method thereof |
| CN103234346A (en) * | 2013-05-10 | 2013-08-07 | 郑州瑞泰耐火科技有限公司 | Low-heat-conduction multi-layer mullite brick and preparation method thereof |
| CN104833211A (en) * | 2015-05-21 | 2015-08-12 | 靳亲国 | Heat insulating fireproofing brick of porous staggered structure |
| CN205133425U (en) * | 2015-10-10 | 2016-04-06 | 无锡兴达节能科技股份有限公司 | Fine and close chamotte brick is used to blast furnace |
-
2015
- 2015-10-10 CN CN201510649925.3A patent/CN105198460A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105161A (en) * | 1986-08-10 | 1987-02-11 | 辽宁省鞍山市陶瓷七厂 | A kind of composite heat-insulating shield |
| CN102285812A (en) * | 2011-06-06 | 2011-12-21 | 浙江大学 | Magnesium-aluminium-titanium structure and thermal insulation integrated composite brick and preparation method thereof |
| CN103234346A (en) * | 2013-05-10 | 2013-08-07 | 郑州瑞泰耐火科技有限公司 | Low-heat-conduction multi-layer mullite brick and preparation method thereof |
| CN104833211A (en) * | 2015-05-21 | 2015-08-12 | 靳亲国 | Heat insulating fireproofing brick of porous staggered structure |
| CN205133425U (en) * | 2015-10-10 | 2016-04-06 | 无锡兴达节能科技股份有限公司 | Fine and close chamotte brick is used to blast furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680024A (en) * | 2018-05-18 | 2018-10-19 | 武汉钢铁有限公司 | A kind of compound masonry construction of the full clay checker brick of coke oven regenerator |
| CN111320462A (en) * | 2020-04-09 | 2020-06-23 | 郑州正仟新材料有限公司 | Compact clay brick and preparation method thereof |
| CN116375484A (en) * | 2023-02-21 | 2023-07-04 | 郑州大学 | Light high-strength layered refractory material and preparation method thereof |
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Application publication date: 20151230 |