CN108484185A - It is a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient and preparation method thereof - Google Patents
It is a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient and preparation method thereof Download PDFInfo
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- CN108484185A CN108484185A CN201810322793.7A CN201810322793A CN108484185A CN 108484185 A CN108484185 A CN 108484185A CN 201810322793 A CN201810322793 A CN 201810322793A CN 108484185 A CN108484185 A CN 108484185A
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- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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Abstract
The present invention relates to a kind of using aluminium chromium slag as corundum calcium hexaluminate of major ingredient and preparation method thereof.Its technical solution is：It is 100 ︰ (15~20) dispensing by the mass ratio of aluminium Ge Zha ︰ lime stones, mix grinding obtains mixture.Under the conditions of 1550~1750 DEG C, mixture is kept the temperature in electric arc furnaces, adds the coke for accounting for 10~15wt% of mixture, continues to keep the temperature；Scum layer is removed, furnace cooling is crushed, obtains particulate material.Into particulate material plus water, wet-milling obtain wet-milling material；The ρ aluminium oxide for accounting for 5~8wt% of wet-milling material, mixing are added into wet-milling material, vacuum squeezes mud molding, ageing mixture；1000~1100 DEG C are warming up in resistance furnace, heat preservation, furnace cooling is made using aluminium chromium slag as the corundum calcium hexaluminate of major ingredient.The present invention have the characteristics that production cost is low, resource utilization is high, to equipment without particular/special requirement and environmental-friendly；Prepared, sintering character high using aluminium chromium slag as the consistency of the corundum calcium hexaluminate of major ingredient be good and refractoriness height.
Description
Technical field
The invention belongs to corundum-calcium hexaluminate technical fields.More particularly to a kind of using aluminium chromium slag as-six aluminium of corundum of major ingredient
Sour calcium and preparation method thereof.
Background technology
Aluminium chromium slag is clinker derived from metal smelting chromium, main chemical compositions Al2O3、Cr2O3And MgO, and it is adjoint
CaO、K2O、TiO2And Fe2O3Equal impurity compositions, contain a certain amount of Cr especially in aluminium chromium slag6+Compound not only seriously pollutes ring
Border, and be applied to also result in certain obstacle.Cr is eliminated by melting and reducing6+Compound, and to Al2O3And Cr2O3It carries out
Separation, and then it is current ripe technological means to prepare the refractory materials such as corundum using the key component in aluminium chromium slag.Corundum-six
Calcium aluminate is the widely used multiphase refractory raw material of fire resisting material field, and not only refractoriness is high, and it is strong to combine corundum phase high temperature
The feature that degree is big and calcium hexaluminate thermal coefficient is small, the high temperature for further improving corundum-calcium hexaluminate multiphase refractory raw material are compacted
The high-temperature behaviors such as change and refractoriness under load.
Currently, preparing corundum-calcium hexaluminate mainly uses solid sintering technology and electric smelting method.
The solid sintering technology is used generally with corundum, activated alumina and containing raw material is wanted based on calcium salt, to be with aluminous cement
Bonding agent, the high temperature firing after mixed-forming.Although solid sintering technology can control synthetic corundum-six by proportion optimizing and temperature
Calcium aluminate composite diphase material, but due to calcium hexaluminate mostly in the form of sheets or plate morphology and be difficult to densified sintering product, especially intermediate product compared with
More (calcium aluminate, Calcium dialuminates etc.), affect the purity of material.
It uses electric smelting rule mainly with natural alumine mine or bauxite etc. for silicon source, is with lime stone or white lime etc.
Calcium source adjusts proportioning after high-temperature fusion, and then corundum-calcium hexaluminate composite diphase material is made.Electric smelting method can prepare consistency
High, advantages of good crystallization corundum-calcium hexaluminate composite diphase material, but high-purity natural alumine mine or bauxite cost is higher, and it is low
Natural alumine mine or bauxite impurity content (the predominantly SiO of grade2) higher, affect corundum-calcium hexaluminate complex phase
The purity of material thereby reduces the high-temperature behavior of material.
Invention content
The present invention is directed to overcome prior art defect, and it is an object of the present invention to provide a kind of production cost is low, resource utilization is high, right
Equipment is without particular/special requirement and environmental-friendly using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient；With party's legal system
Standby, sintering character high using aluminium chromium slag as the consistency of corundum-calcium hexaluminate of major ingredient be good and refractoriness height.
To achieve the above object, the technical solution adopted in the present invention comprises the concrete steps that：
The first step by the mass ratio of aluminium Ge Zha ︰ lime stones is 100 ︰ (15~20) dispensing, in the ball mill mix grinding to granularity
≤ 0.1mm, obtains mixture.
The mixture is added in electric arc furnaces second step, under the conditions of 1550~1750 DEG C, first keeps the temperature 20~30 points
Clock, then the coke for accounting for the 10~15wt% of mixture is added into the electric arc furnaces, continue heat preservation 35~60 minutes；Then it removes
Removing dross layer, cools to room temperature with the furnace, comes out of the stove, and is crushed, obtains particulate material.
Third step is added into the particulate material and accounts for the water of the 20~25wt% of particulate material, and wet-milling is extremely in the ball mill
Granularity≤80 μm obtain wet-milling material.
ρ-the aluminium oxide for accounting for 5~8wt% of the wet-milling material is added into the wet-milling material for 4th step, mixes 3~5 minutes,
Obtain premix.
The premix is added in pug mill 5th step, and vacuum squeezes mud molding, ageing mixture 12~24 hours；It is placed in electricity again
1000~1100 DEG C are warming up in resistance stove, keeps the temperature 2~5 hours, furnace cooling is made using aluminium chromium slag as-six aluminium of corundum of major ingredient
Sour calcium.
The aluminium chromium slag is clinker derived from aluminothermic process metal smelting chromium, and the main chemical compositions of the aluminium chromium slag are：
Al2O3Content is 70~80wt%；Cr2O3Content is 5~10wt%；Content of MgO is 5~10wt%.
The CaCO of the lime stone3Content >=97wt%.
C content >=95wt% of the coke.
The Al of the ρ-aluminium oxide2O3Content >=99wt%；The granularity of the ρ-aluminium oxide is 60~80 μm.
The vacuum pressure that the vacuum squeezes mud is 0.05~0.1Pa.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art：
1, using aluminium chromium slag derived from metal smelting chromium as primary raw material, electric smelting after crushing takes full advantage of the present invention
Itself impurity composition of aluminium chromium slag is fluxing, significantly reduces electric smelting temperature, and passed through without particular/special requirement to equipment, significantly reduces with aluminium
Chromium slag is the manufacturing cost of corundum-calcium hexaluminate of major ingredient.
2, the present invention by melting and reducing to Al2O3And Cr2O3It is detached, while improving resource utilization, is also disappeared
In addition to Cr6+Pollution, it is environmental-friendly.
3, the particulate material double sintering after the present invention restores electric smelting, and wet-milling-is combined to squeeze bricklayer's's skill, it lives improving sintering
While property, sintering reaction temperature is reduced；CA, CA can also be eliminated2Equal intermediate products, are improved using aluminium chromium slag as the rigid of major ingredient
The purity of jade-calcium hexaluminate.
The present invention prepare using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient after measured：Bulk density is 2.9~3.4g/
cm3；Apparent porosity is 2~7%；Refractoriness is 1700~1750 DEG C.
Therefore, the present invention have production cost is low, resource utilization is high, to equipment without particular/special requirement and environmental-friendly spy
Point；Prepared, sintering character high using aluminium chromium slag as the consistency of corundum-calcium hexaluminate of major ingredient be good and refractoriness height.
Specific implementation mode
The invention will be further described With reference to embodiment, not to the limit of the scope of the present invention
System.
To avoid repeating, first by involved by present embodiment raw material and related technical parameter Unify legislation it is as follows,
It is repeated no more in embodiment：
The aluminium chromium slag is clinker derived from aluminothermic process metal smelting chromium, and the main chemical compositions of the aluminium chromium slag are：
Al2O3Content is 70~80wt%；Cr2O3Content is 5~10wt%；Content of MgO is 5~10wt%.
The CaCO of the lime stone3Content >=97wt%.
C content >=95wt% of the coke.
The Al of the ρ-aluminium oxide2O3Content >=99wt%；The granularity of the ρ-aluminium oxide is 60~80 μm.
The vacuum pressure that the vacuum squeezes mud is 0.05~0.1Pa.
Embodiment 1
It is a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient and preparation method thereof.Preparation method described in the present embodiment
Step is：
The first step by the mass ratio of aluminium Ge Zha ︰ lime stones is 100 ︰ (15~17) dispensing, in the ball mill mix grinding to granularity
≤ 0.1mm, obtains mixture.
The mixture is added in electric arc furnaces second step, under the conditions of 1550~1630 DEG C, first keeps the temperature 20~30 points
Clock, then the coke for accounting for the 10~12wt% of mixture is added into the electric arc furnaces, continue heat preservation 35~45 minutes；Then it removes
Removing dross layer, cools to room temperature with the furnace, comes out of the stove, and is crushed, obtains particulate material.
Third step is added into the particulate material and accounts for the water of the 20~22wt% of particulate material, and wet-milling is extremely in the ball mill
Granularity≤80 μm obtain wet-milling material.
ρ-the aluminium oxide for accounting for 5~7wt% of the wet-milling material is added into the wet-milling material for 4th step, mixes 3~5 minutes,
Obtain premix.
The premix is added in pug mill 5th step, and vacuum squeezes mud molding, ageing mixture 12~24 hours；It is placed in electricity again
1000~1040 DEG C are warming up in resistance stove, keeps the temperature 2~4 hours, furnace cooling is made using aluminium chromium slag as-six aluminium of corundum of major ingredient
Sour calcium.
It is manufactured in the present embodiment using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient after measured：Bulk density be 2.9~
3.1g/cm3；Apparent porosity is 2~4%；Refractoriness is 1700~1720 DEG C.
Embodiment 2
It is a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient and preparation method thereof.Preparation method described in the present embodiment
Step is：
The first step by the mass ratio of aluminium Ge Zha ︰ lime stones is 100 ︰ (16~18) dispensing, in the ball mill mix grinding to granularity
≤ 0.1mm, obtains mixture.
The mixture is added in electric arc furnaces second step, under the conditions of 1590~1670 DEG C, first keeps the temperature 20~30 points
Clock, then the coke for accounting for the 11~13wt% of mixture is added into the electric arc furnaces, continue heat preservation 40~50 minutes；Then it removes
Removing dross layer, cools to room temperature with the furnace, comes out of the stove, and is crushed, obtains particulate material.
Third step is added into the particulate material and accounts for the water of the 21~23wt% of particulate material, and wet-milling is extremely in the ball mill
Granularity≤80 μm obtain wet-milling material.
ρ-the aluminium oxide for accounting for 5~7wt% of the wet-milling material is added into the wet-milling material for 4th step, mixes 3~5 minutes,
Obtain premix.
The premix is added in pug mill 5th step, and vacuum squeezes mud molding, ageing mixture 12~24 hours；It is placed in electricity again
1020~1060 DEG C are warming up in resistance stove, keeps the temperature 2~4 hours, furnace cooling is made using aluminium chromium slag as-six aluminium of corundum of major ingredient
Sour calcium.
It is manufactured in the present embodiment using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient after measured：Bulk density be 3.0~
3.2g/cm3；Apparent porosity is 3~5%；Refractoriness is 1710~1730 DEG C.
Embodiment 3
It is a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient and preparation method thereof.Preparation method described in the present embodiment
Step is：
The first step by the mass ratio of aluminium Ge Zha ︰ lime stones is 100 ︰ (17~19) dispensing, in the ball mill mix grinding to granularity
≤ 0.1mm, obtains mixture.
The mixture is added in electric arc furnaces second step, under the conditions of 1630~1710 DEG C, first keeps the temperature 20~30 points
Clock, then the coke for accounting for the 12~14wt% of mixture is added into the electric arc furnaces, continue heat preservation 45~55 minutes；Then it removes
Removing dross layer, cools to room temperature with the furnace, comes out of the stove, and is crushed, obtains particulate material.
Third step is added into the particulate material and accounts for the water of the 22~24wt% of particulate material, and wet-milling is extremely in the ball mill
Granularity≤80 μm obtain wet-milling material.
ρ-the aluminium oxide for accounting for 6~8wt% of the wet-milling material is added into the wet-milling material for 4th step, mixes 3~5 minutes,
Obtain premix.
The premix is added in pug mill 5th step, and vacuum squeezes mud molding, ageing mixture 12~24 hours；It is placed in electricity again
1040~1080 DEG C are warming up in resistance stove, keeps the temperature 3~5 hours, furnace cooling is made using aluminium chromium slag as-six aluminium of corundum of major ingredient
Sour calcium.
It is manufactured in the present embodiment using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient after measured：Bulk density be 3.1~
3.3g/cm3；Apparent porosity is 4~6%；Refractoriness is 1720~1740 DEG C.
Embodiment 4
It is a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient and preparation method thereof.Preparation method described in the present embodiment
Step is：
The first step by the mass ratio of aluminium Ge Zha ︰ lime stones is 100 ︰ (18~20) dispensing, in the ball mill mix grinding to granularity
≤ 0.1mm, obtains mixture.
The mixture is added in electric arc furnaces second step, under the conditions of 1670~1750 DEG C, first keeps the temperature 20~30 points
Clock, then the coke for accounting for the 13~15wt% of mixture is added into the electric arc furnaces, continue heat preservation 50~60 minutes；Then it removes
Removing dross layer, cools to room temperature with the furnace, comes out of the stove, and is crushed, obtains particulate material.
Third step is added into the particulate material and accounts for the water of the 23~25wt% of particulate material, and wet-milling is extremely in the ball mill
Granularity≤80 μm obtain wet-milling material.
ρ-the aluminium oxide for accounting for 6~8wt% of the wet-milling material is added into the wet-milling material for 4th step, mixes 3~5 minutes,
Obtain premix.
The premix is added in pug mill 5th step, and vacuum squeezes mud molding, ageing mixture 12~24 hours；It is placed in electricity again
1060~1100 DEG C are warming up in resistance stove, keeps the temperature 3~5 hours, furnace cooling is made using aluminium chromium slag as-six aluminium of corundum of major ingredient
Sour calcium.
It is manufactured in the present embodiment using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient after measured：Bulk density be 3.2~
3.4g/cm3；Apparent porosity is 5~7%；Refractoriness is 1730~1750 DEG C.
Present embodiment has following good effect compared with prior art：
1, present embodiment using aluminium chromium slag derived from metal smelting chromium as primary raw material, fill by electric smelting after crushing
It is fluxing that aluminium chromium slag itself impurity composition point is utilized, significantly reduces electric smelting temperature, and passed through without particular/special requirement to equipment, significantly drops
It is low using aluminium chromium slag as the manufacturing cost of corundum-calcium hexaluminate of major ingredient.
2, present embodiment by melting and reducing to Al2O3And Cr2O3It is detached, is improving resource utilization
Meanwhile also eliminating Cr6+Pollution, it is environmental-friendly.
3, the particulate material double sintering after present embodiment restores electric smelting, and wet-milling-is combined to squeeze bricklayer's's skill, it is carrying
Height sintering is active simultaneously, reduces sintering reaction temperature；CA, CA can also be eliminated2Equal intermediate products, are improved based on aluminium chromium slag
The purity of corundum-calcium hexaluminate of material.
Present embodiment prepare using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient after measured：Bulk density is 2.9
~3.4g/cm3；Apparent porosity is 2~7%；Refractoriness is 1700~1750 DEG C.
Therefore, present embodiment have production cost is low, resource utilization is high, to equipment without particular/special requirement and environment
Friendly feature；Prepared, sintering character high using aluminium chromium slag as the consistency of corundum-calcium hexaluminate of major ingredient be good and refractoriness
It is high.
Claims (7)
1. a kind of using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient, it is characterised in that the step of the preparation method
Suddenly it is：
The first step, by aluminium Ge Zha ︰ lime stones mass ratio be 100 ︰ (15~20) dispensing, in the ball mill mix grinding to granularity≤
0.1mm obtains mixture；
The mixture is added in electric arc furnaces second step, under the conditions of 1550~1750 DEG C, first keeps the temperature 20~30 minutes, then
The coke for accounting for the 10~15wt% of mixture is added into the electric arc furnaces, continues heat preservation 35~60 minutes；Then it removes floating
Slag blanket cools to room temperature with the furnace, comes out of the stove, and is crushed, obtains particulate material；
The water for accounting for the 20~25wt% of particulate material, in the ball mill wet-milling to granularity are added into the particulate material for third step
≤ 80 μm, obtain wet-milling material；
ρ-the aluminium oxide for accounting for 5~8wt% of the wet-milling material is added into the wet-milling material for 4th step, mixes 3~5 minutes, obtains
Premix；
The premix is added in pug mill 5th step, and vacuum squeezes mud molding, ageing mixture 12~24 hours；It is placed in resistance furnace again
In be warming up to 1000~1100 DEG C, keep the temperature 2~5 hours, furnace cooling is made using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient.
2. according to claim 1 using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient, it is characterised in that institute
It is clinker derived from aluminothermic process metal smelting chromium to state aluminium chromium slag, and the main chemical compositions of the aluminium chromium slag are：Al2O3Content is
70~80wt%；Cr2O3Content is 5~10wt%；Content of MgO is 5~10wt%.
3. according to claim 1 using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient, it is characterised in that institute
State the CaCO of lime stone3Content >=97wt%.
4. according to claim 1 using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient, it is characterised in that institute
State C content >=95wt% of coke.
5. according to claim 1 using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient, it is characterised in that institute
State the Al of ρ-aluminium oxide2O3Content >=99wt%；The granularity of the ρ-aluminium oxide is 60~80 μm.
6. according to claim 1 using aluminium chromium slag as the preparation method of corundum-calcium hexaluminate of major ingredient, it is characterised in that institute
It is 0.05~0.1Pa to state vacuum and squeeze the vacuum pressure of mud.
7. a kind of using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient, it is characterised in that described using aluminium chromium slag as the corundum-six of major ingredient
Calcium aluminate is according to any one of claim 1~6 using aluminium chromium slag as the preparation side of corundum-calcium hexaluminate of major ingredient
Prepared by method using aluminium chromium slag as corundum-calcium hexaluminate of major ingredient.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928135A (en) * | 2010-09-01 | 2010-12-29 | 中国地质大学（北京） | Calcium hexaluminate lightweight refractory brick and preparation method thereof |
| CN101928153A (en) * | 2010-09-01 | 2010-12-29 | 中国地质大学（北京） | Calcium hexaluminate and corundum composite porous light heat insulation refractory material and preparation method thereof |
| CN102531555A (en) * | 2012-03-15 | 2012-07-04 | 福州大学 | Calcium hexaaluminate/corundum composite synthesized in situ with aluminium factory sludge and oyster shells |
| CN102718514A (en) * | 2012-06-28 | 2012-10-10 | 江苏晶鑫高温材料有限公司 | Micropore high-strength corundum-calcium hexaluminate composite refractory raw material and preparation method thereof |
| CN105585314A (en) * | 2015-12-22 | 2016-05-18 | 辽宁科技学院 | Dense calcium hexaluminate grog refractory and preparation method thereof |
-
2018
- 2018-04-11 CN CN201810322793.7A patent/CN108484185B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928135A (en) * | 2010-09-01 | 2010-12-29 | 中国地质大学（北京） | Calcium hexaluminate lightweight refractory brick and preparation method thereof |
| CN101928153A (en) * | 2010-09-01 | 2010-12-29 | 中国地质大学（北京） | Calcium hexaluminate and corundum composite porous light heat insulation refractory material and preparation method thereof |
| CN102531555A (en) * | 2012-03-15 | 2012-07-04 | 福州大学 | Calcium hexaaluminate/corundum composite synthesized in situ with aluminium factory sludge and oyster shells |
| CN102718514A (en) * | 2012-06-28 | 2012-10-10 | 江苏晶鑫高温材料有限公司 | Micropore high-strength corundum-calcium hexaluminate composite refractory raw material and preparation method thereof |
| CN105585314A (en) * | 2015-12-22 | 2016-05-18 | 辽宁科技学院 | Dense calcium hexaluminate grog refractory and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| PENGDA ZHAO ET AL.: ""Separation and characterisation of fused alumina obtained from aluminium chromium slag"，Pengda Zhao et al.，《Ceramics International》，第44卷，第4期，第3590-3595页", 《CERAMICS INTERNATIONAL》 * |
| 张长瑞: "《陶瓷基复合材料 原理、工艺、性能与设计》", 31 January 2001, 国防科技大学出版社 * |
| 戴金辉: "《无机非金属材料概论》", 31 July 1999, 哈尔滨工业大学出版社 * |
| 易帅: ""CaAl2O19及其复相材料的制备与性能研究"，易帅，《工程科技Ⅰ辑》，第B015-8页", 《工程科技Ⅰ辑》 * |
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