CN102010211B - Method for producing alumina mullite homogenizing material - Google Patents
Method for producing alumina mullite homogenizing material Download PDFInfo
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- CN102010211B CN102010211B CN 201010501329 CN201010501329A CN102010211B CN 102010211 B CN102010211 B CN 102010211B CN 201010501329 CN201010501329 CN 201010501329 CN 201010501329 A CN201010501329 A CN 201010501329A CN 102010211 B CN102010211 B CN 102010211B
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- Prior art keywords
- deironing
- coal gangue
- bauxitic clay
- homogenizing
- mullite
- 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
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- 239000000463 material Substances 0.000 title claims abstract description 39
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 23
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 15
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000004927 clay Substances 0.000 claims description 23
- 239000003245 coal Substances 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 230000032683 aging Effects 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 5
- 238000013467 fragmentation Methods 0.000 claims description 5
- 238000006062 fragmentation reaction Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 abstract description 10
- 235000012211 aluminium silicate Nutrition 0.000 abstract description 10
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract description 10
- 229910001570 bauxite Inorganic materials 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 6
- 239000011819 refractory material Substances 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 abstract description 3
- 230000009172 bursting Effects 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a method for producing an alumina homogenizing material, which belongs to the technical field of ceramics and refractory materials. The preparation method comprises the following steps of: with middle and low grade bauxite, gangue or kaolin as raw materials, assistantly adding siliceous dust or aluminum oxide powder; and breaking, grinding by a wet method, deironing, atomizing for drying, moulding, burning, and the like to form the alumina mullite homogenizing material with a main crystalline phase of mullite. The invention not only greatly improves the utilization ratio of bauxite resources but also can utilize part of gangue to produce a high-grade refractory raw material and has obvious social and economic benefits; and the preparation method has the characteristics of simple process, easy operation, lower cost, high mouldability, difficult bursting after conveyed into a kiln, and the like.
Description
Technical field
The invention belongs to pottery, technical field of refractory materials, relate to a kind of method of producing alumina mullite homogenizing material.
Background technology
It is the precondition of making the quality refractory goods that chemical ingredients and mineral composition keep stable, therefore requires the Al of same grade in the bauxite chamotte
2O
3Within the fluctuation of content is controlled at more among a small circle.Although China's bauxite ore reserves are abundant, but because mostly there is small scale in aluminum current alumina processing enterprise, processes the phenomenons such as simple, that kind is single, product stability is poor, the discarded rate of mine resources is high, energy consumption is high, seriously polluted, causing in recent years, the low high alumina resource supply and demand contradiction that reaches of resource utilization manifests.China has 65% refractory materials to belong to Al approximately
2O
3-SiO
2It is product, therefore, pay attention to the research of refractory raw material, taking the technological lines such as homogenizing, purification, when making the lifting of grade, quality generation matter of natural matter, can not only improve the raw material added value, also for the synthetic novel material of a large amount of high-quality of research and development, for the research and development of refractory product are laid a solid foundation.
Be accompanied by decades to application and the outlet of higher-grade bauxitic clay, present higher-grade alumina is fewer and feweri, therefore, the technique of employing science and advanced equipment, take full advantage of a large amount of in, low-grade alumine, mixed level ore deposit and muck, preparation has the serial alumina mullite homogeneous material (Al of excellent properties
2O
3Content 48%～75%), China's alumine resource utilization is brought up to more than 80% from present 20%, realized Sustainable development, of far-reaching significance.
The alumina mullite homogeneous material is take bauxitic clay as basic material, and selectivity is equipped with other material, and through the synthetic material with even composition, structure and performance that high-temperature calcination after certain processing treatment operation makes, its principal crystalline phase is the mullite phase.
At present, in the published patent, utilize alumina to prepare have three of mullite:
Publication number be the patent of invention of CN98101568.9 take alumine, kaolin, clay, silica, aluminum oxide as raw material, adopt the techniques such as preroasting and wet-leaching, complex process, cost is high, is difficult to realize.
Publication number is that the patent of invention of CN200510040142.1 mainly utilizes kaolin and aluminium hydroxide and aluminum oxide to be raw material, because it requires material grinding to 1～2 μ m, cost is high, and efficient is low, is difficult to satisfy the requirement of industrialized production.
Publication number be the patent of invention of 200610017448.X take alumine, coal gangue as raw material, add rare earth oxide and MgO composite sintering agent, adopt that wet method or semidrying are mixed grinds, briquetting is dried, is burnt till.Rare earth oxide is expensive, difficult acquisition, and can produce certain harm to HUMAN HEALTH and environment.
Summary of the invention
For the production technique of simplifying alumina mullite homogenizing material, be convenient to implement, reduce production costs, the present invention proposes in spraying drying and dry-press process base substrate is on the basis of feature, take middle low-grade bauxite as main raw material, selectivity is equipped with novel process, the novel method of coal gangue or kaolin production alumina mullite homogenizing material.
Described method is: the piece material lists such as bauxitic clay rawore, coal gangue solely are broken into fritter to adapt to follow-up grinding, all materials are by after specific weight percent weighing, being equipped with well, the water and the admixture that add 30-40%, with its wet grinding to the 300-500 order, the pug that obtains enters the ageing mixture pond, utilizing tramp iron separator that pug is carried out deironing processes, the recycling spray-drying tower carries out spraying drying, obtain dry method straight forming behind the particulate state material, base substrate after the moulding burns till in high temperature kiln, can make alumina mullite homogenizing material.
There is no that particle diameter is greater than the fragment of 10mm after the fragmentation of described block of material.
Described bauxitic clay is middle low-grade bauxite or muck raw material, Al
2O
3Content is 48%-73%.
The weight percent of described material is:
Main raw material: 60～100% alumine, 0%～40% coal gangue or kaolin;
Auxiliary adding: the silicon ash or the aluminum oxide powder that account for main raw material gross weight 0-4%.
During described wet-milling, add the purpose of admixture for suppressing powder reuniting, be preferably organic dispersing agent, such as polyvinyl alcohol etc., add-on is no more than 0.5%.
After described pug carried out spraying drying, moisture content was less than 4%.
The described false particulate state powder direct voltage that utilizes spraying drying to form that is shaped to is pressed into suitable base substrate, in order to burning till.
Described high temperature kiln is take tunnel furnace as best, and firing temperature is 1550-1750 ℃.
Technique scheme of the present invention compared with prior art has the following advantages:
(1) operation is simple, easy handling, and cost is lower;
(2) spraying drying brings up a large amount of false particles, and the venting quality of the moment of false particle when moulding is very good, the slabbing when having avoided moulding, simultaneously, because moisture content is lower, so, through the molding of this operation not drying greatly improved efficient directly into kiln;
(3) avoided the base substrate of existing wet moulding to enter explosion problem in the kiln;
(4) take full advantage of a large amount of in, low-grade alumine, mixed level ore deposit and muck be starting material, improved the utilization ratio of high bauxite resource, is conducive to optimization utilization and the Sustainable development of mine resources.
(5) coal gangue is the waste material of coal production association, and the present invention can utilize the part of coal spoil to produce high-grade refractory materials, has not only improved utilization ratio and the added value of product of resource, and is conducive to the long-run development of resources and environment.
The following example is used for illustrating the present invention, points out that simultaneously the present invention is not limited to wherein said specific composition, ratio, parameter and technique.
Embodiment
Embodiment 1
Take aluminium content as 48%～60% the bauxitic clay rawore and the coal gangue of aluminium content as 33%～38% as raw material, produce alumina mullite homogenizing material, the weight percentage of each raw material is:
Bauxitic clay: 75%, coal gangue 25%;
Aluminum oxide powder: 4% (accounting for the percentage ratio of bauxitic clay and coal gangue gross weight);
Polyvinyl alcohol: 0.2% (accounting for the percentage ratio of bauxitic clay and coal gangue gross weight).
Method with above-mentioned material production alumina mullite homogenizing material may further comprise the steps:
(1) the piece material is broken for particle diameter less than the fine grained chippings of 10mm.
(2) join in the ball mill after the fritter particle that fragmentation is good, by weight percentage weighing of the aluminum oxide powder preparation, add simultaneously the water and the polyvinyl alcohol that account for material gross weight 30-40% and grind; Be ground to discharging behind the 300-500 order.
(3) ground pug is got to carried out deironing in the ageing mixture pond, it is 10000-12000 Gauss's wet method magnetic deironing device that magnetic intensity is adopted in deironing.
(4) the wet type pug after the deironing is got to carried out drying in the spray-dryer, dried pug moisture is less than 4%.
(5) utilize the powder direct voltage after the spraying drying to be shaped to base substrate.
(6) the base substrate code is directly pushed in the tunnel furnace on kiln car burn till, firing temperature is controlled at 1550-1650 ℃.
Embodiment 2
Take aluminium content as 60%～73% the bauxitic clay rawore and the coal gangue of aluminium content as 33%～38% as raw material, produce alumina mullite homogenizing material, the weight percentage of each raw material is:
Bauxitic clay: 63%, coal gangue 37%;
2.5% active oxidation aluminium powder (accounting for the percentage ratio of bauxitic clay and coal gangue gross weight);
Polyvinyl alcohol: 0.2% (accounting for the percentage ratio of bauxitic clay and coal gangue gross weight).
Method with above-mentioned material production alumina mullite homogenizing material may further comprise the steps:
(1) the bulk material is broken for particle diameter less than the fine grained chippings of 10mm.
(2) the fritter bauxitic clay that fragmentation is good, coal gangue and the by weight percentage weighing of active oxidation aluminium powder join in the ball mill after being equipped with, and add simultaneously the water and the polyvinyl alcohol that account for material gross weight 30-40% and grind; Be ground to discharging behind the 300-500 order.
(3) ground pug is got to carried out deironing in the ageing mixture pond, it is 10000-12000 Gauss's wet method magnetic deironing device that magnetic intensity is adopted in deironing.
(4) the wet type pug after the deironing is got to carried out drying in the spray-dryer, dried pug moisture is less than 4%.
(5) utilize the powder direct voltage after the spraying drying to be shaped to base substrate.
(6) the base substrate code is directly pushed in the tunnel furnace on kiln car burn till, firing temperature is controlled at 1600-1700 ℃.
Embodiment 3
Take aluminium content as 60%～73% the bauxitic clay rawore and the kaolin of aluminium content as 35%～37% as raw material, produce alumina mullite homogenizing material, the weight percentage of each raw material is:
Bauxitic clay: 72%, coal gangue 28%;
3% active oxidation aluminium powder (accounting for the percentage ratio of bauxitic clay and kaolin gross weight);
0.5% silicon ash (accounting for the percentage ratio of bauxitic clay and kaolin gross weight);
Polyvinyl alcohol: 0.2% (accounting for the percentage ratio of bauxitic clay and kaolin gross weight).
Method with above-mentioned material production alumina mullite homogenizing material may further comprise the steps:
(1) the bulk material is broken for the piece footpath less than the fine grained chippings of 10mm.
(2) join in the ball mill after the fine grained chippings material that fragmentation is good, kaolin, by weight percentage weighing of the active oxidation aluminium powder preparation, add simultaneously the water and the polyvinyl alcohol that account for material gross weight 30-40% and grind; Be ground to discharging behind the 300-500 order.
(3) ground pug is got to carried out deironing in the ageing mixture pond, it is 10000-12000 Gauss's wet method magnetic deironing device that magnetic intensity is adopted in deironing.
(4) the wet type pug after the deironing is got to carried out drying in the spray-dryer, dried pug moisture is less than 4%.
(5) utilize the powder direct voltage after the spraying drying to be shaped to base substrate.
(6) the base substrate code is directly pushed in the tunnel furnace on kiln car burn till, firing temperature is controlled at 1650-1750 ℃.
Claims (1)
1. method of producing alumina mullite homogenizing material is characterized in that: take aluminium content as 48%～60% the bauxitic clay rawore and the coal gangue of aluminium content as 33%～38% as raw material, produce alumina mullite homogenizing material, the weight percentage of each raw material is:
The bauxitic clay rawore: 75%, coal gangue 25%;
Aluminum oxide powder: account for 4% of bauxitic clay rawore and coal gangue gross weight;
Polyvinyl alcohol: account for 0.2% of bauxitic clay rawore and coal gangue gross weight,
Method with above-mentioned material production alumina mullite homogenizing material may further comprise the steps:
(1) the piece material is broken for particle diameter less than the fine grained chippings of 10mm,
(2) join in the ball mill after the fritter particle that fragmentation is good, by weight percentage weighing of the aluminum oxide powder preparation, add simultaneously the water and the polyvinyl alcohol that account for material gross weight 30-40% and grind; Be ground to discharging behind the 300-500 order,
(3) ground pug is got to carried out deironing in the ageing mixture pond, it is 10000-12000 Gauss's wet method magnetic deironing device that magnetic intensity is adopted in deironing,
(4) the wet type pug after the deironing is got to carried out drying in the spray-dryer, dried pug moisture is less than 4%,
(5) utilize the powder direct voltage after the spraying drying to be shaped to base substrate,
(6) the base substrate code is directly pushed in the tunnel furnace on kiln car burn till, firing temperature is controlled at 1550-1650 ℃.
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| CN 201010501329 CN102010211B (en) | 2010-10-11 | 2010-10-11 | Method for producing alumina mullite homogenizing material |
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| CN 201010501329 CN102010211B (en) | 2010-10-11 | 2010-10-11 | Method for producing alumina mullite homogenizing material |
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| CN102010211A CN102010211A (en) | 2011-04-13 |
| CN102010211B true CN102010211B (en) | 2013-04-17 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159488A (en) * | 2012-12-31 | 2013-06-19 | 北京欣瑞天成节能工程技术有限公司 | Granularity homogenization method of refractory aggregate of various size fractions |
| CN103272679A (en) * | 2013-05-14 | 2013-09-04 | 北京欣瑞天成节能工程技术有限公司 | Method for contouring refractory aggregate |
| CN103496708B (en) * | 2013-09-24 | 2015-03-04 | 武汉科技大学 | Raw material for synthesizing mullite and preparation method thereof |
| CN103819211B (en) * | 2014-01-07 | 2017-06-27 | 山东耀华特耐科技有限公司 | CFBB lightweight wear-resistant plastic refractory and preparation method thereof |
| CN106242538A (en) * | 2016-08-30 | 2016-12-21 | 长兴云峰炉料有限公司 | A kind of novel homogeneous material stemming |
| CN108191436A (en) * | 2018-01-16 | 2018-06-22 | 宫营方 | A kind of method for preparing refractory grade bauxite using bauxite rawore powder |
| CN108373319A (en) * | 2018-01-16 | 2018-08-07 | 宫营方 | A method of preparing abrasive material grade bauxite using bauxite rawore powder |
| CN109265185A (en) * | 2018-10-30 | 2019-01-25 | 浙江锦诚新材料股份有限公司 | A kind of Special castable for kiln outlet |
| CN109970434B (en) * | 2019-04-17 | 2021-09-24 | 郑州市新郑梅久实业有限公司 | Ceramsite sand and production process thereof |
| CN111153705B (en) * | 2019-12-31 | 2022-04-19 | 内蒙古超牌新材料股份有限公司 | Method for manufacturing M47 refractory material by using coal gangue |
| CN111423221B (en) * | 2020-03-16 | 2022-10-21 | 宝武装备智能科技有限公司 | Castable for rotary hearth furnace working layer and preparation method thereof |
| CN113912414B (en) * | 2021-10-28 | 2022-08-12 | 韶关学院 | Method for preparing mullite porous heat-insulating material by using coal gangue |
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| CN101121604A (en) * | 2007-07-25 | 2008-02-13 | 濮阳濮耐高温材料（集团）股份有限公司 | Method for producing alumina homogenization material |
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Address after: 030100 Yangqu County, Shanxi province finance street, No., No. 5 Patentee after: Shanxi Gaoke Refractory Material Co.,Ltd. Address before: 030006 No. 280, Changzhi Road, hi tech Zone, Shanxi, Taiyuan Patentee before: Shanxi Gaoke Refractory Material Co.,Ltd. |
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