CN102030550A - Homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic - Google Patents
Homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic Download PDFInfo
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- CN102030550A CN102030550A CN 201010535348 CN201010535348A CN102030550A CN 102030550 A CN102030550 A CN 102030550A CN 201010535348 CN201010535348 CN 201010535348 CN 201010535348 A CN201010535348 A CN 201010535348A CN 102030550 A CN102030550 A CN 102030550A
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- corundum
- homogeneous material
- mullite
- homogeneous
- moldable
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Abstract
The invention discloses a homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic, belonging to the field of high-temperature abrasion-resisting fireproofing material, comprising high-aluminum homogeneous material, alumina fine powder, silica fine powder, clay, phosphoric acid, aluminum dihydrogen phosphate solution, pure calcium aluminate cement and the like as raw materials, wherein the homogeneous material is as follows: the content of Al2O3 is 70-90% and the volume density is 2.9-3.5g.cm<-3>. Synthetic homogeneous material with low water-absorption, low porosity and high homogeneity is used for substituting the traditional natural raw material of sintered alumina clinker with high-absorption, high porosity and low homogeneity or composite raw material system of corundum and mullite to produce homogeneous corundum-mullite high-strength abrasion-resisting plastic. Distinguished from the castable, the plastic can be directly utilized in the construction method of smearing and ramming without supporting a module. The material of the invention is good in workability, high in strength, good in abrasive resistance and optimal in on-site usage effect, which is in favour of prolonging service life of furnace lining and improving utilization efficiency of the high-temperature furnace.
Description
Technical field
The invention belongs to the high-temperature wearable fire resisting material field, particularly invented the natural matter that the synthetic homogeneous material that adopts low water absorption, low porosity and high uniformity substitutes the sintering bauxite clinker of the system of corundum, the direct compound use of mullite raw material or high water absorbing capacity, high porosity and lack of homogeneity, the corundum-mullite matter high-strength wearable of having developed homogeneous is moldable.Be different from mould material, moldablely need not to install mould, directly adopt smear, the constructional method of ramming.This material can be widely used in positions such as easy to wear, the infiltration of Thermal Equipments such as blast furnace, hotblast stove, circulating fluidized bed, incinerator, catalytic cracking unit and erosion, particularly special-shaped or baroque position.
Technical background
Blast furnace, hotblast stove, circulating fluidized bed, incinerator, Thermal Equipments such as catalytic cracking unit easy to wear, infiltration and attack sites, it is the key position of high temperature service, especially position such as abnormal shape or complex structure, directly influence the work-ing life of high temperature furnace lining and the utilising efficiency of high temperature service, in the refractory raw material, corundum has high-melting-point, the characteristics of high strength and high-wearing feature, mullite material has the characteristic of good thermal shock stability, therefore, employing need not to install mould, and the corundum-mullite based material that can directly construct is one of ideal abrasion-proof fire-resistant moldable refractory.
Traditional corundum-mullite is that the abrasion-proof fire-resistant moldable refractory aggregate is mainly with two kinds of forms, a kind of is directly to adopt corundum and the compound second wife of mullite raw material to use, a kind of sintering bauxite clinker that is to use mineral facies by corundum and mullite phase composite, its proportioning raw materials is: corundum-mullite or sintered bauxite raw material (3～1mm) 10%～50%, (1mm＞) 10%～35%, the fine powder 5～35% of (0.088mm＞), alumina powder 3～15%, fine silica powder 2～8%, pure calcium aluminate cement 1～8%, phosphoric acid 2～10% and phosphate dihydrogen aluminum solution 2～10%.Volume density 2.7g/cm
3, thermal conductivity 1.5W.m
-1.K
-1But, when directly adopting corundum and the compound second wife of mullite raw material to use and since corundum and mullite all be high temperature mutually, easy-sintering not, during use, bonding strength is low, wear resisting property is bad.And the natural matter of traditional bauxite chamotte, difference along with the place of production, raw material is formed different, especially dopant species and content difference are bigger, and, be subjected to the influence of traditional firing process and artificial selection technology, it is stable inadequately that bauxite chamotte has quality, process meticulous inadequately, characteristics such as lack of homogeneity, this has had a strong impact on the stability of abrasion-proof fire-resistant moldable refractory performance index and the homogeneity of damage speed, especially concentrates or low-grade sintering bauxite clinker when sneaking at impurity, the concentrated wear of high temperature furnace lining can appear, the infiltration and corrode problems such as too fast, seriously reduced the work-ing life of high-abrasive material and the utilization coefficient of high temperature kiln.
Homogeneous class material be to existing alumina natural matter by homogenizing process and suitably high-temperature calcination, thereby reach the stable, evenly of structure, performance and quality, the phenomenon of avoiding impurity to concentrate.The homogeneous material of alumine base, be mainly salic 50%～70% serial homogenized alumina grog (trade mark is Mulcoa) of the U.S. abroad, be C.E. company the Georgia state utilize local and near alumine, through the wet method extrusion molding, make in the rotary kiln high-temperature calcination, Britain's trade mark is the homogeneous material (Al of Molochite
2O
3Content is 42%～44%) be to utilize local kaolin, rinsing, purify the back pressed compact and burn till at tunnel furnace.In middle nineteen nineties, U.S. C.E. company founds the factory in Guizhou, utilizes local resources to produce high-purity homogenized alumina grog, Al
2O
3(trade mark is α-Star) to content 90%～93%.China according to the aluminium content and the impurity characteristics of China's alumina, carried out the research and development of alumine homogenization material in " eight or five " tackling key problem, developed Al gradually
2O
3Content is 70%～90% homogeneous material, and volume density is 2.9～3.5gcm
-3The synthetic homogeneous material has characteristics such as low porosity, low water absorption, volume density height and high uniformity.
Application about homogeneous material launches gradually, and adopts Al
2O
3Content is 70%～90% alternative conventional sintering bauxite clinker of homogeneous material or corundum-mullite mixing raw material, and the report of the abrasion-proof fire-resistant moldable refractory of exploitation low porosity, low water absorption and high stability is less.
Summary of the invention
The present invention seeks to adopt Al
2O
3Content is 70%～90% alternative conventional sintering bauxite clinker of homogeneous material or corundum-mullite mixing raw material, the abrasion-proof fire-resistant moldable refractory of exploitation low porosity, low water absorption and high stability.Be different from mould material, moldablely need not to install mould, directly adopt smear, the constructional method of ramming.
A kind of corundum-mullite matter high-strength wearable that contains homogeneous material is moldable, and the raw material that the present invention selects for use is made up of high alumina homogeneous material (8～5mm, 5～3mm, 3～1mm, 1mm＞and less than the fine powder of 0.088mm), alumina powder, fine silica powder, clay, phosphoric acid, phosphate dihydrogen aluminum solution, pure calcium aluminate cement and admixture etc.
The specific embodiment of the invention is by following proportioning, and the various refractory raw materials of weighing stir 3 minutes (and adding the phosphoric acid of 3～10% mass percents) at forced stirrer, and ageing mixture 24h.In being stranded good pug, add 1～8% high-alumina cement accelerator for hardening, in forced stirrer, stir after 1 minute, add 3～10% phosphate dihydrogen aluminum solutions after, pug is continued to force to stir into plastic state, and with moldable in particular mold ramming process become wear-resisting test samples and intensity detection sample etc., sample after the demoulding in 24 hours is after 110 ℃ of oven dry in 24 hours, 1100 ℃ of thermal treatments 3 hours, behind the naturally cooling, the measurement performance index.
Refractory raw material granularity (mm) mass content (%)
Homogeneous material 3-1 10～50
1-0 5～40
＜0.074 5～35
Silicon powder 95 2～8
Alumina powder 2～15
Phosphoric acid solution (45%) 3～10
High-alumina cement 1～8
Phosphate dihydrogen aluminum solution 3～10
Wherein homogeneous material is: Al
2O
3Content is 70～90%, and volume density is 2.9～3.5gcm
-3
Al
2O
3Content is that 70%～90% the homogeneous material and the essential mineral of sintering high grade bauxite grog are corundum, mullite mutually, corundum is combined closely mutually with mullite, the problem of the hard-to-sinter that this has existed when having solved corundum raw material and the compound use of mullite raw material, and, the sintered bauxite grog raw material of high porosity, lack of homogeneity is compared, use homogeneous material can guarantee the uniformity of construction body, and can realize low wash water, high fatefulue high-grade refractory materials.In addition, along with the maturation gradually of synthesis technique, cost reduces greatly, has been lower than the price of traditional superfine sintering bauxite clinker at present, and product price well below the refractory materials with corundum and two kinds of development of raw materials of mullite, has vast market prospect especially.
Embodiment:
Example sees Table 1.
Table 1 embodiments of the invention
On probation through the scene, the present invention adopts the synthetic homogeneous material of low water absorption, low porosity and high uniformity to substitute the sintering bauxite clinker of traditional high water absorbing capacity, high porosity and lack of homogeneity or the mixing raw material of corundum and mullite, developing corundum-mullite is that high abrasion is moldable, not only have good workability, intensity height, wear resistance be good, and on-the-spot result of use the best, this helps prolonging the work-ing life of furnace lining, improve the utilising efficiency of high temperature kiln, have vast market prospect.
Claims (3)
1. a corundum-mullite matter high-strength wearable that contains homogeneous material is moldable, it is characterized in that the various refractory raw materials of weighing, stirs 3 minutes at forced stirrer, and adds the phosphoric acid of 3～10% mass percents, ageing mixture 24h; In being stranded good pug, add 1～8% high-alumina cement accelerator for hardening, in forced stirrer, stir after 1 minute, add 3～10% phosphate dihydrogen aluminum solutions again after, pug is continued to force to stir into plastic state, and with moldable in particular mold ramming process become wear-resisting test samples and intensity detection sample, sample after the demoulding in 24 hours is after 110 ℃ of oven dry in 24 hours, 1100 ℃ of thermal treatments 3 hours, behind the naturally cooling, the measurement performance index;
Refractory raw material granularity (mm) mass content (%)
Homogeneous material 3-1 10～50
1-0 5～40
＜0.074 5～35
Silicon powder 95 2～8
Alumina powder 2～15
Mass concentration 45% phosphoric acid solution 3～10
High-alumina cement 1～8
Phosphate dihydrogen aluminum solution 3～10
Wherein homogeneous material is: Al
2O
3Content is 70～90%, and volume density is 2.9～3.5gcm
-3
2. a kind of corundum-mullite matter high-strength wearable that contains homogeneous material as claimed in claim 1 is moldable, it is characterized in that being different from mould material, moldablely need not to install mould, directly adopt smear, the constructional method of ramming.
3. a kind of corundum-mullite matter high-strength wearable that contains homogeneous material as claimed in claim 1 or 2 is moldable, it is characterized in that this material is widely used in easy to wear, the infiltration and the attack sites of blast furnace, hotblast stove, circulating fluidized bed, incinerator, catalytic cracking unit, particularly special-shaped or baroque position.
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| CN 201010535348 CN102030550B (en) | 2010-11-03 | 2010-11-03 | Homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic |
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| CN 201010535348 CN102030550B (en) | 2010-11-03 | 2010-11-03 | Homogeneous material-containing corundum-mullite high-strength abrasion-resisting plastic |
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| CN102030550B CN102030550B (en) | 2012-09-05 |
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| CN103819211A (en) * | 2014-01-07 | 2014-05-28 | 邹平耀华特耐科技有限公司 | Light wear-proof and fire-proof plastic mass for circulating fluidized bed boiler and preparation method of light wear-proof and fire-proof plastic mass |
| CN104478445A (en) * | 2014-12-03 | 2015-04-01 | 柳州市共和耐火材料有限公司 | Low-cement-bonded casting material |
| CN104671804A (en) * | 2015-01-16 | 2015-06-03 | 长兴正发热电耐火材料有限公司 | High-alumina plastic refractory and preparation method thereof |
| CN104761267A (en) * | 2015-03-16 | 2015-07-08 | 通达耐火技术股份有限公司 | High-strength wear-resistant plastic material used in circulating fluidized bed boiler |
| CN105503142A (en) * | 2015-12-18 | 2016-04-20 | 山东耀华特耐科技有限公司 | Light moldable material used for waste heat boiler and constructed under severe-cold condition |
| CN105565833A (en) * | 2015-12-18 | 2016-05-11 | 山东耀华特耐科技有限公司 | Efficient refractory castable for medical waste incinerator and preparation and construction technology thereof |
| CN106220195A (en) * | 2016-07-19 | 2016-12-14 | 郑州鑫源防磨耐材有限公司 | A kind of abrasion-proof fire-resistant moldable refractory |
| CN107010972A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High-temperature wearable mud |
| CN107010932A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High temperature liner body skin patching material |
| CN107188547A (en) * | 2017-06-05 | 2017-09-22 | 武汉科技大学 | A kind of High-Alumina is moldable and preparation method thereof |
| CN110407592A (en) * | 2019-08-09 | 2019-11-05 | 洛阳特耐窑炉工程有限公司 | A kind of formula and preparation method thereof of aluminum amorphous refractory |
| CN110526722A (en) * | 2019-09-02 | 2019-12-03 | 马鞍山利尔开元新材料有限公司 | A kind of moulding by casting high life corundum mullite rock collector nozzle of ladle brick and preparation method thereof |
| CN111362674A (en) * | 2020-03-19 | 2020-07-03 | 上海彭浦特种耐火材料厂有限公司 | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same |
| CN111470853A (en) * | 2020-03-26 | 2020-07-31 | 北京利尔高温材料股份有限公司 | Magnesium gunning mix and application thereof |
| CN111704470A (en) * | 2020-06-12 | 2020-09-25 | 浙江琰大新材料有限公司 | Aluminum silicate plastic refractory |
| CN112062583A (en) * | 2020-08-25 | 2020-12-11 | 贵阳明通炉料有限公司 | Corundum mullite silicon carbide plastic for power plant boiler combustion control belt and preparation method thereof |
| CN115448685A (en) * | 2022-08-29 | 2022-12-09 | 中冶武汉冶金建筑研究院有限公司 | Acid-resistant pouring material for top of hot blast stove and preparation method and construction method thereof |
| CN116375485A (en) * | 2023-03-22 | 2023-07-04 | 中钢洛耐科技股份有限公司 | Aluminate cement combined unshaped refractory repair material and preparation method thereof |
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| CN103819211A (en) * | 2014-01-07 | 2014-05-28 | 邹平耀华特耐科技有限公司 | Light wear-proof and fire-proof plastic mass for circulating fluidized bed boiler and preparation method of light wear-proof and fire-proof plastic mass |
| 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 |
| CN104478445A (en) * | 2014-12-03 | 2015-04-01 | 柳州市共和耐火材料有限公司 | Low-cement-bonded casting material |
| CN104671804A (en) * | 2015-01-16 | 2015-06-03 | 长兴正发热电耐火材料有限公司 | High-alumina plastic refractory and preparation method thereof |
| CN104761267A (en) * | 2015-03-16 | 2015-07-08 | 通达耐火技术股份有限公司 | High-strength wear-resistant plastic material used in circulating fluidized bed boiler |
| CN104761267B (en) * | 2015-03-16 | 2017-03-15 | 通达耐火技术股份有限公司 | CFBB is moldable with high-strength wearable |
| CN105503142A (en) * | 2015-12-18 | 2016-04-20 | 山东耀华特耐科技有限公司 | Light moldable material used for waste heat boiler and constructed under severe-cold condition |
| CN105565833A (en) * | 2015-12-18 | 2016-05-11 | 山东耀华特耐科技有限公司 | Efficient refractory castable for medical waste incinerator and preparation and construction technology thereof |
| CN106220195A (en) * | 2016-07-19 | 2016-12-14 | 郑州鑫源防磨耐材有限公司 | A kind of abrasion-proof fire-resistant moldable refractory |
| CN107010932A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High temperature liner body skin patching material |
| CN107010972A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High-temperature wearable mud |
| CN107188547A (en) * | 2017-06-05 | 2017-09-22 | 武汉科技大学 | A kind of High-Alumina is moldable and preparation method thereof |
| CN107188547B (en) * | 2017-06-05 | 2019-10-11 | 武汉科技大学 | A kind of High-Alumina is moldable and preparation method thereof |
| CN110407592A (en) * | 2019-08-09 | 2019-11-05 | 洛阳特耐窑炉工程有限公司 | A kind of formula and preparation method thereof of aluminum amorphous refractory |
| CN110526722A (en) * | 2019-09-02 | 2019-12-03 | 马鞍山利尔开元新材料有限公司 | A kind of moulding by casting high life corundum mullite rock collector nozzle of ladle brick and preparation method thereof |
| CN111362674A (en) * | 2020-03-19 | 2020-07-03 | 上海彭浦特种耐火材料厂有限公司 | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same |
| CN111362674B (en) * | 2020-03-19 | 2022-05-13 | 上海彭浦特种耐火材料厂有限公司 | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same |
| CN111470853A (en) * | 2020-03-26 | 2020-07-31 | 北京利尔高温材料股份有限公司 | Magnesium gunning mix and application thereof |
| CN111704470A (en) * | 2020-06-12 | 2020-09-25 | 浙江琰大新材料有限公司 | Aluminum silicate plastic refractory |
| CN112062583A (en) * | 2020-08-25 | 2020-12-11 | 贵阳明通炉料有限公司 | Corundum mullite silicon carbide plastic for power plant boiler combustion control belt and preparation method thereof |
| CN115448685A (en) * | 2022-08-29 | 2022-12-09 | 中冶武汉冶金建筑研究院有限公司 | Acid-resistant pouring material for top of hot blast stove and preparation method and construction method thereof |
| CN116375485A (en) * | 2023-03-22 | 2023-07-04 | 中钢洛耐科技股份有限公司 | Aluminate cement combined unshaped refractory repair material and preparation method thereof |
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Address after: 100085, Qinghe Road, Qinghe, Beijing, Haidian District, No. 1 Patentee after: Beijing Jinyu Tongda refractory Technology Co.,Ltd. Address before: 100085, Beijing, Haidian District, Desheng Road, Xisanqi, Anning Road, No. 1 East Patentee before: TONGDA REFRACTORY TECHNOLOGIES Co.,Ltd. |
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