CN108955265A - Low thermally conductive high abrasion silicon not compound heat-insulation brick - Google Patents
Low thermally conductive high abrasion silicon not compound heat-insulation brick Download PDFInfo
- Publication number
- CN108955265A CN108955265A CN201810592663.5A CN201810592663A CN108955265A CN 108955265 A CN108955265 A CN 108955265A CN 201810592663 A CN201810592663 A CN 201810592663A CN 108955265 A CN108955265 A CN 108955265A
- Authority
- CN
- China
- Prior art keywords
- thermally conductive
- brick
- compound heat
- high abrasion
- insulation layer
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/06—Composite bricks or blocks, e.g. panels, modules
- F27D1/08—Bricks or blocks with internal reinforcement or metal backing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/28—Arrangements of linings
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention belongs to the technical fields of refractory material, and in particular to low thermally conductive high abrasion silicon not compound heat-insulation brick.Low thermally conductive high abrasion silicon not compound heat-insulation brick, including working lining and thermal insulation layer, the working lining are made of superfine bauxite, silicon carbide；The thermal insulation layer is made of aluminosilicate property material；It is connected between working lining and thermal insulation layer using high temperature clay.Low thermally conductive high abrasion silicon provided by the invention not compound heat-insulation brick hardens in high-temperature agglomerant-control room temperature 5 minutes, and intensity is higher, and allotment clay can bear 1450 degrees Celsius and keep enough intensity.
Description
Technical field
The invention belongs to the technical fields of refractory material, and in particular to low thermally conductive high abrasion silicon not compound heat-insulation brick.
Background technique
Siliceous mullite brick is with mullite (3Al2O3.2SiO2) and silicon carbide (SiC) being fired into bricks for main mineral composition.It is special
The advantages that point is wear resistant corrosion resistant of the high temperature resistant property but also with silicon carbide, the good heat conductivity of existing mullite.Last century 80
When age builds Baosteel, the refractory material that the external form introduced from Nippon Steel is built in the container as fish torpedo ladle is just similar to present silicon
Not brick.The actually modified material of aluminium silicate products, the hot-metal bottle original refractory brick that material is based on high alumina, in steel row
In the technological progress of industry, in order to accelerate to make steel speed, it is so-called that a certain amount of calcium oxide (CaO) progress is added in hot-metal bottle in advance
Pretreatment.The high temperature erosion that refractory material in this way in tank should bear molten iron resists strong basicity corrosion again, it is clear that high aluminium
Matter can't hold out against, and then be formed a new kind plus suitable silicon carbide in high aluminium material, metallurgy industry is it
Referred to as alumina silicate silicon carbide is fired into bricks.
Since last century the nineties start, decomposition cement kiln is promoted rapidly at home outside new dry process furnace, this
The advanced production method of kind brings extremely harsh requirement, the heat force intensity and revolving speed of large-scale cement rotary kiln to refractory material
After raising, excessively also reaching 1400 DEG C with the temperature born, and temperature change is frequent, it is attached that rear intermediate zone is in wheel belt again
Closely, stronger mechanical stress is born, is not easy to hang up properly kliner coating very much, and this section of band should not also hang kliner coating in terms of technological angle, but
Due to the effect of thermal stress and mechanical stress, cause the service life of the refractory material at the position often also shorter than clinkering zone, at
For the weak link of full kiln, so not meeting requirement with the high-alumina brick of configuration in this section originally.Therefore last century 90 years
In generation, plays national building materials research institute and carries out to the heat force intensity, wearability, the anticorrosive and raising thermal shock resistance that improve high aluminium material
Further investigation.Additives and the additives such as silicon carbide is still added in main direction in high aluminium material, passes through new technique, production
New varieties of this section with requirement are adapted to out, and in gradually promoting and applying, siliceous mullite brick is applied to water as a product name
Mud rotary kiln.
In recent years, silicon not refractory brick cement rotary kiln application be rapidly developed, especially the appearance of new type dry kiln and
Enlargement, thermal stress intensity increases substantially in the revolving speed of kiln, kiln, proposes to the material of refractory material, physicochemical property new
Requirements at the higher level.Therefore cement rotary kiln except under protection of the clinkering zone in its hung kliner coating still use magnesite-chrome brick in addition to, secondary clinkering zone,
After using siliceous mullite brick instead, effect is significantly better than magnesite-chrome brick for intermediate zone, cooling zone.Country Zhejiang, Jiangsu, Shandong, Shanxi etc. at present
Province has tens of refractory material enterprises to produce this product.Due to this products material convenient sources, technique requires not tight, each enterprise
The practical production capacity of industry is very big, and siliceous mullite brick can be produced as long as it can produce clay brick or alumina firebrick.Supply exceed demand for product, market
Dog-eat-dog.
It is able to satisfy requirement in rotary kiln transition belt siliceous mullite brick, with the raising of environmental requirement in recent years, cost
Factors, the cement production enterprises such as control take various modes pair to energy saving proposition requirements at the higher level, to rotary kiln surface heat loss
To.
Summary of the invention
The present invention is directed to overcome prior art defect, it is therefore an objective to the low thermally conductive high abrasion silicon of one kind not compound heat-insulation brick is provided,
It is designed on the siliceous mullite brick series of products using relative maturity using new shape, the silicic acid of matter containing zirconium cotton plate is added, it is effective to drop
The heat leakage rate of low siliceous mullite brick.
To achieve the above object, the technical scheme adopted by the invention is that:
Low thermally conductive high abrasion silicon not compound heat-insulation brick, including working lining and thermal insulation layer, the working lining is by superfine bauxite, carbon
SiClx is made；The thermal insulation layer is made of aluminosilicate property material；It is connected between working lining and thermal insulation layer using high temperature clay.
The thermal insulation layer includes zirconium fiberboard.
The surface of the thermal insulation layer upper end is connect with working lining, and the zirconium fiberboard of arch is provided in lower end.
Low thermally conductive high abrasion silicon provided by the invention not compound heat-insulation brick is hard in high-temperature agglomerant-control room temperature 5 minutes
Change, and intensity is higher, allotment clay can bear 1450 degrees Celsius and keep enough intensity.The tightness of arch faying face, control
The machining accuracy of molding jig and the processing dimension design of fiberboard.The selection of the fiberboard containing zirconium should guarantee the use intensity of material
The material for having thermal coefficient low again.
Specific embodiment
The present invention will be further described With reference to embodiment, not to the limit of the scope of the present invention
System.
Compound heat-insulation brick by working lining and thermal insulation layer two parts does not form a kind of Novel fireproof brick to low thermally conductive high abrasion silicon.
Working lining uses high-quality superfine bauxite, silicon carbide for primary raw material, aluminosilicate property material of the thermal insulation layer using insulation system heat, work
Make layer to be made through high-pressure molding and special firing process, forms composite brick using high temperature clay between thermal insulation layer two parts
Body.
Product working lining is with wear-resisting property is strong, corrosion resistance is high, antistrip performance is strong, should not hang kliner coating at high temperature
The features such as;Thermal insulation layer has the characteristics that thermal coefficient is low, and can reach reduces trunk temperature, energy-saving dual function, can be with
Significantly extend the service life of rotary kiln, and due to using double-layer structure, the light-weight entirety weight to reduce brick of insulating portion
Amount mitigates cylinder of rotary kiln load, and current of electric is small, mitigates equipment attrition, is new dry process rotary kiln cooling zone, intermediate zone reason
The inner lining material thought.
Consider that comprehensive strength uses fiberboard containing zirconium in thermal insulation layer, fiber containing zircon ceramic belongs in alumina silicate synthesis powder
Increase temperature oxide (ZrO2、Cr2O3), be conducive to the viscosity for improving glass phase, can effectively resist glassy state alumina silicate fibre in height
Crystallization and grain growth when temperature uses, delay the agglomeration of fiber interweaving contact position, receive to improve fiber and resist high temperature
The ability and fiber of contracting use temperature.The eutectic point and melting temperature of the fibrous raw material containing zirconium are low, and energy consumption is small, ZrO in fiber2Contain
Amount is generally 15%-17%, reaches as high as 24%, is easy at fibre, and fiber is elongated, and intensity is high.
Fiberboard uses arch design, outputs arch notch in siliceous mullite brick major part position, will be vertical using arch bridge principle
Load becomes part of horizontal thrust, greatly reduces the moment of flexure of arch, is evenly distributed pressure, gives full play to material anti-pressure ability.
Due to the adoption of the above technical scheme, the thermal conductivity working lining of the low thermally conductive high abrasion silicon of the present invention not compound heat-insulation brick
(1.7 ~ 2.4 W/ (m ˙ K)) thermal insulation layer (0.1 W/ (m ˙ K)) is low compared with alkaline composition (2.69~2.74 W/ (m ˙ K)), therefore this is low
The heat insulation of thermally conductive high abrasion silicon not compound heat-insulation brick is relatively good.In the secondary clinkering zone of large-sized rotary kiln, intermediate zone, preheating
The positions such as band, kiln tail, tertiary-air pipe, dore furnace siliceous mullite brick, compared with basic brick, drum surface temperature reduce by 100 DEG C with
On.
Claims (3)
1. low thermally conductive high abrasion silicon not compound heat-insulation brick, which is characterized in that including working lining and thermal insulation layer, the working lining by
Superfine bauxite, silicon carbide are made；The thermal insulation layer is made of aluminosilicate property material；Height is utilized between working lining and thermal insulation layer
Warm clay connection.
2. low thermally conductive high abrasion silicon according to claim 1 not compound heat-insulation brick, which is characterized in that in the thermal insulation layer
Fiberboard containing zirconium.
3. low thermally conductive high abrasion silicon according to claim 1 not compound heat-insulation brick, which is characterized in that on the thermal insulation layer
The surface at end is connect with working lining, and the zirconium fiberboard of arch is provided in lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592663.5A CN108955265A (en) | 2018-06-11 | 2018-06-11 | Low thermally conductive high abrasion silicon not compound heat-insulation brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592663.5A CN108955265A (en) | 2018-06-11 | 2018-06-11 | Low thermally conductive high abrasion silicon not compound heat-insulation brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108955265A true CN108955265A (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810592663.5A Pending CN108955265A (en) | 2018-06-11 | 2018-06-11 | Low thermally conductive high abrasion silicon not compound heat-insulation brick |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851332A (en) * | 2019-01-22 | 2019-06-07 | 浙江圣奥耐火材料有限公司 | A kind of low thermally conductive high wear-resistant brick of tertiary-air pipe and its processing technology |
| CN111848189A (en) * | 2020-07-24 | 2020-10-30 | 湖南省娄底市宏冶炉料有限责任公司 | Novel scouring-resistant thermal shock-resistant impact brick, preparation method and current stabilizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5221017A (en) * | 1975-08-11 | 1977-02-17 | Nippon Steel Corp | Refractories for uniformmheating furnace top |
| CN2740981Y (en) * | 2004-04-30 | 2005-11-16 | 尤潘垦 | Fire-proof thermal insulative composite brick and wall of kiln |
| CN101857449A (en) * | 2010-06-07 | 2010-10-13 | 长兴盛旺锅炉耐火保温防腐工程有限公司 | Siliceous mullite structure-insulating integrated composite brick and preparation method thereof |
| CN202936316U (en) * | 2012-10-19 | 2013-05-15 | 徐敏 | Composite ceramic firebrick |
| CN105198454A (en) * | 2015-09-09 | 2015-12-30 | 郑州瑞泰耐火科技有限公司 | Low-heat conduction insulating brick and preparation method thereof |
-
2018
- 2018-06-11 CN CN201810592663.5A patent/CN108955265A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5221017A (en) * | 1975-08-11 | 1977-02-17 | Nippon Steel Corp | Refractories for uniformmheating furnace top |
| CN2740981Y (en) * | 2004-04-30 | 2005-11-16 | 尤潘垦 | Fire-proof thermal insulative composite brick and wall of kiln |
| CN101857449A (en) * | 2010-06-07 | 2010-10-13 | 长兴盛旺锅炉耐火保温防腐工程有限公司 | Siliceous mullite structure-insulating integrated composite brick and preparation method thereof |
| CN202936316U (en) * | 2012-10-19 | 2013-05-15 | 徐敏 | Composite ceramic firebrick |
| CN105198454A (en) * | 2015-09-09 | 2015-12-30 | 郑州瑞泰耐火科技有限公司 | Low-heat conduction insulating brick and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李沅锦等: "低导热多层复合莫来石砖的研制及应用", 《2015耐火材料综合学术年会（第十三届全国不定形耐火材料学术会议和2015耐火原料学术交流会）论文集（3）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851332A (en) * | 2019-01-22 | 2019-06-07 | 浙江圣奥耐火材料有限公司 | A kind of low thermally conductive high wear-resistant brick of tertiary-air pipe and its processing technology |
| CN111848189A (en) * | 2020-07-24 | 2020-10-30 | 湖南省娄底市宏冶炉料有限责任公司 | Novel scouring-resistant thermal shock-resistant impact brick, preparation method and current stabilizer |
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| PB01 | Publication | ||
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Application publication date: 20181207 |