CN1029117C - Method of making premium high-alumina refractory - Google Patents
Method of making premium high-alumina refractory Download PDFInfo
- Publication number
- CN1029117C CN1029117C CN 86103155 CN86103155A CN1029117C CN 1029117 C CN1029117 C CN 1029117C CN 86103155 CN86103155 CN 86103155 CN 86103155 A CN86103155 A CN 86103155A CN 1029117 C CN1029117 C CN 1029117C
- Authority
- CN
- China
- Prior art keywords
- aluminum
- raw material
- quality
- refractory material
- alumina
- 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.)
- Expired - Fee Related
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a technology of high-aluminum refractory material. High-aluminum clinker with high quality is used for replacing clay soil to serve as a binding agent, and thus, the negative factors causing the quality reduction of the traditional method using clay soil as a binding agent to produce high-aluminum brick can be eliminated. The raw material is the quality basis of the refractory material. The Henan Bo'ai high-aluminum material has the good characteristic similar to that of andalusite, and the Bo'ai high-aluminum material comprising raw material and clinker can be manufactured into high-aluminum refractory material with high loading softening point, small resintering contraction and high quality. The present invention has simple technology. The high-aluminum refractory material is suitable for large blast furnaces, hot blast stoves, big steel water ladles, continuous casting tundishes, electric furnace roofs, carbon anode roasting furnaces, cement kilns, glass furnaces, etc.
Description
The present invention relates to the preparation method of high alumina refractory.
Form by the bauxitic clay of significant proportion and clay many years ago and obtain the many refractory materialss of total alumina content in the 50-55% scope, because their alumina content is more higher than bauxite clay brick, quite cheap on price, attracted the hobby of Iron And Steel Industry, because creep test was not also as an important factor of quality evalution at that time.This material, especially make the hotblast stove brick, once produced serious actual lesson, these refractory materialss impolite by name " adulterated brick " show the creep resistance characteristic of their institute's argillaceous, under heavily stressed situation, total alumina content is higher, almost being incoherent, because alumina component is not the part of small matrix, and almost is isolated the existence.
Premium high-alumina refractory not only requires Al
2O
3The content height more seriously requires foreign matter content low, and promptly purity wants high.Al
2O
3Content low though (as about 60%), the high alumina product that foreign matter content is also low is better than Al
2O
3Content high though (as about 80%), the also high product of foreign matter content simultaneously.
Raw material is the quality base of refractory products.Seek Al
2O
3The high aluminium material that content is suitable, while purity is higher also brings into play its characteristic fully, is significant to producing premium high-alumina refractory.
The conventional formulation of producing high alumina brick is to make tackiness agent with clay, because the adding of volume clay not only reduces the alumina content of preparing burden, the content of impurity in the batching (or flux) is increased, and adobe is made a fire shrink to increase.The high alumina brick that the result makes, tissue odds is even.Quality index is low.Low as load softening point, heavily burn and shrink greatly.So that high alumina brick has the performance of clay brick.Existing technology biases toward the alumina content (reason by ministerial standard regulation and procurement contract requirement is arranged) of brick here.Also higher (the K especially of foreign matter content often when unfortunately general high alumina alumina content is high
2O and Na
2The content of O is higher have seriously influence).When using the high bauxitic clay brickmaking of general alumina content, the qualification rate of high alumina brick is descended, also makes the performance of product also relatively poor, low as load softening point, heavily burn shrink big.
The objective of the invention is to produce high alumina refractory with the raw bauxite substitute for clay.
The raw material that the present invention uses originates from Hebei universal love.Material purity height (being that impurity or flux content are low) is rich one of the high aluminium material natural characteristic that is subjected to.In order to guarantee the purity of raw material, must be noted that and manually pick up choosing.To pick up manually in order making that choosing is easier to be carried out, can to use grog, because burn till after the grog, impurity exposes from outward appearance, is convenient to the naked eyes identification, artificial reject clean.The chemical ingredients of universal love high alumina is as shown in table 1.The raw material physicals is as shown in table 2.
Table 1 material chemical component
Composition universal love high aluminium material (through manually picking up choosing)
% raw material grog
SiO 33.31 37.31
Al
2O
352.95 59.31
Fe
2O
30.46 0.52
Igloss 10.73
TiO
21.64 1.84
CaO 0.66 0.74
MgO 0.33 0.37
Na
2O does not survey and surveys
K
2O ″″ ″″
Amount to 100.08 100.09
Universal love high alumina chemical ingredients is a calculated value in the table 2, gets by calculating after the corresponding raw material chemical analysis removal igloss.Impurity average content (%) by 18 sample ores is MgO0.292, TiO
21.348, Na
2O0.11, K
2O0.243, CaO0.32 this shows that the raw ore foreign matter content is low, the purity height.
Table 2 raw material physicals
Firing temperature shows gas BDg/ suction
Title
℃ porosity % cm
3Rate %
Universal love height-2.5 2.93 0.85
The aluminium raw material
High 1380 insulations 9.3 2.58 3.58 of universal love
Aluminium grog 6 hours
High 1430 insulations 8.4 2.58 3.24 of universal love
Aluminium grog 24 hours
Raw material (raw material) 2 belongs to agalmatolite, diaspore type aluminium ore.The raw ore volume change little (equalling zero) of making a fire through the volume change of 1430 ℃ of insulations after 24 hours.
Choose fine and close hard, the universal love raw bauxite piece of dark-grey black and beige or the uniform universal love high alumina of flaxen color and luster piece, respectively through manually picking up choosing, remove iron sheet or other impurity, after cone crusher and the broken pulverizing of ball mill, take the prescription of 50-80% universal love high alumina and 20-50% universal love raw bauxite to produce by weight.For the brick that quality is strict with, can how use a little grogs to improve the purity (because of burning till after the grog, impurity is easy to naked eyes and recognizes and manually pick up choosing) of raw material.For hollow high alumina brick,, can take the prescription of low clinker content or full raw material in order to reduce cost.Pug is with the formability of friction press, to take 50-60%(weight) grog and 40-50%(weight) prescription of raw material is advisable.
Be preferably in the lignosulfite 1.5% that adds proportion 1.2 in the prescription and make wedding agent.
Pug mixes through edge runner-wet mill, is pressed into adobe through 300 tons of friction presses then.Embodiments of the invention and Comparative Examples are shown in table 3.Adobe volume density (BD) must not be lower than numerical value shown in the table, and adobe is burnt till in tunnel furnace or down-draft kiln after the tunnel drying, and firing temperature and soaking time are as shown in table 3:
By table 3 as seen, product quality indicator improves with firing temperature to be improved, increase with the clay consumption descends, minimizing with the clay consumption improves, with the quality index without the brick of the G-1 raw material 100% of clay and two kinds of prescriptions of G-3 raw material: grog=4:6 is the best, 1520 ℃ of insulations of firing temperature were advisable in 24 hours, reached the purpose of making premium high-alumina refractory finally.
Simultaneously make wedding agent and can also make high-density tonerde brick with the universal love high aluminium material.
The universal love raw bauxite has cohesiveness (though its cohesiveness is if clay is not good) therefore can make tackiness agent by substitute for clay.
Owing to do not have clay in the batching, therefore can improve the firing temperature (1520 ℃ are incubated 24 hours) of brick greatly.High temperature burns till assurance quality product (physical index such as intensity, void content, load softening point, heavily burning contraction or the like) and better finishes.
Owing to do not have clay in the batching, therefore batching still maintains the original composition of raw material, purity and characteristic.
Claims (3)
1, a kind of method of producing high alumina refractory is that raw material is picked up choosing, fragmentation, pressed compact, fired and form, and it is characterized in that raw material is made up of 50-80% (weight) high alumina, 20-50% (weight) raw bauxite, and wherein raw bauxite consists of 33.31%SiO
2, 52.95%Al
2O
8, 0.46%Fe
2O
3, 1.64%TiO
2, 0.66%CaO, 0.33%MgO; High alumina consist of 37.31%SiO
2, 59.31%Al
2O
3, 0.52%Fe
2O
3, 1.84%TiO
2, 0.74%CaO, 0.37%MgO.
2,, it is characterized in that raw material is by 50-60%(weight according to the method for claim 1) high alumina and 40-50%(weight) raw bauxite form.
3, according to the method for claim 1 or 2, it is characterized in that preparing burden adds the lignosulfite of 1.5% proportion 1.2 at home and abroad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103155 CN1029117C (en) | 1986-04-30 | 1986-04-30 | Method of making premium high-alumina refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103155 CN1029117C (en) | 1986-04-30 | 1986-04-30 | Method of making premium high-alumina refractory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86103155A CN86103155A (en) | 1987-12-02 |
| CN1029117C true CN1029117C (en) | 1995-06-28 |
Family
ID=4801971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86103155 Expired - Fee Related CN1029117C (en) | 1986-04-30 | 1986-04-30 | Method of making premium high-alumina refractory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029117C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602610B (en) * | 2009-04-17 | 2012-02-01 | 陈红良 | Raw material formulation for furnace cover of cement-less entire electric furnace |
| CN101913891B (en) * | 2010-09-02 | 2012-06-20 | 河南鑫诚耐火材料股份有限公司 | Refractory bricks for flue walls of carbon anode baking furnaces and preparation method thereof |
| CN103253943A (en) * | 2013-04-17 | 2013-08-21 | 孝义市和中兴矿产有限公司 | Sintering method for shaped product of fire resistant material by utilizing alumina red mud as binding agent |
| CN108373337A (en) * | 2018-03-05 | 2018-08-07 | 北京利尔高温材料股份有限公司 | A kind of wear-resisting gunning refractory of blast furnace lining |
| CN111908903A (en) * | 2020-06-16 | 2020-11-10 | 浙江攀盛冶金材料有限公司 | Aluminum-magnesium ramming mass |
-
1986
- 1986-04-30 CN CN 86103155 patent/CN1029117C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN86103155A (en) | 1987-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112897992B (en) | High-temperature-treated magnesia carbon brick for RH dip pipe and circulating pipe and preparation method thereof | |
| CN1029117C (en) | Method of making premium high-alumina refractory | |
| CN1024531C (en) | Burnt Ma-Al-Cr refractory brick and making method thereof | |
| CN1704384A (en) | Periclase-olivine light thermal-insulated fireproof materials and method for preparing same | |
| US4303448A (en) | Olivine refractory bricks for heat storage applications | |
| US3901721A (en) | Dolomite-magnesite refractory and batch therefor | |
| CN110627484A (en) | Refractory brick and preparation method thereof | |
| CN1062335A (en) | A kind of magnesian ramming mass and manufacture method thereof | |
| US4999325A (en) | Rebonded fused brick | |
| CN1266827A (en) | Immersed-in-wax burnt conite brick and its making process | |
| US3304188A (en) | Process for dead-burning dolomite | |
| SU628136A1 (en) | Charge for making high-alumina refractories | |
| CN1048967C (en) | Burnt oil-immersed conite and its manufacturing process | |
| RU93055860A (en) | METHOD OF BREAKING STEEL SCALES, WHICH IS THE WASTE OF METALLURGICAL PRODUCTION | |
| US3726699A (en) | Burned basic refractory and batch therefor | |
| CN87108137A (en) | A kind of magnesia carbon brick and production method thereof | |
| JP3201678B2 (en) | High spalling resistant magnesia carbonaceous brick and method for producing the same | |
| JPS5919073B2 (en) | Method for manufacturing sintered compacts | |
| IE830678L (en) | Manufacturing refractory magnesia-chromium products. | |
| SU876608A1 (en) | Charge for making packing linings of thermal sets | |
| SU1065383A1 (en) | Method for making periclase-chromite products | |
| US3262797A (en) | Refractory shapes | |
| CN115433016A (en) | Magnesium-iron-chromium brick for kiln car and preparation method thereof | |
| RU2040507C1 (en) | Carbon-containing refractory product | |
| SU876607A1 (en) | Refractory mass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |