CN110028313A - A kind of corundum crucible and preparation method thereof - Google Patents

A kind of corundum crucible and preparation method thereof Download PDF

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Publication number
CN110028313A
CN110028313A CN201910412069.8A CN201910412069A CN110028313A CN 110028313 A CN110028313 A CN 110028313A CN 201910412069 A CN201910412069 A CN 201910412069A CN 110028313 A CN110028313 A CN 110028313A
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parts
corundum
diamond spar
plate diamond
andalusite
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CN110028313B (en
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孙华云
于乐海
李明晶
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Shandong Vocational College of Industry
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Shandong Vocational College of Industry
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Abstract

A kind of corundum crucible and preparation method thereof, belongs to induction furnace technical field.It is characterized in that, parts by weight of raw materials forms are as follows: 60 ~ 70 parts of corundum, 20 ~ 25 parts of spinelle, 3 ~ 8 parts of activated alumina, 2 ~ 5 parts of electrically molten magnesia, 5 ~ 10 parts of andalusite, 5 ~ 8 parts of bonding agent.The SiO that the andalusite introduced in corundum crucible of the invention is decomposed to form2With the Al in emergy fine powder, alumina powder2O3Mullite network is formed by reaction-sintered to be interspersed between aluminium oxide aggregate, improves product thermal shock resistance and intensity.The introducing of alumina powder and andalusite micropowder is advanced to mullitization temperature less than 1000 DEG C, and product has stronger high temperature intensity.The spinelle introduced in matrix and the spinelle being formed in situ enhance the corrosion resistance permeability resistance of basic slag.

Description

A kind of corundum crucible and preparation method thereof
Technical field
A kind of corundum crucible and preparation method thereof, belongs to induction furnace technical field.
Background technique
As domestic induction furnace develops towards high efficiency, rapid melting, enlarged direction, furnace lining material requires more and more severe It carves.Crucible is the important component of hot investment casting industrial high temperature induction furnace, is the container of fusing and refining liquid steel.Crucible is long-term It is directly contacted with high-temperature molten steel, clinker and gas, is easy to be etched damage, molten steel can be contaminated.Smelting metal is intermittent work Industry process, crucible periodically bear heating and cooling effect, are easy to produce crackle, or even peel off, and cause to seep steel and destroy.Cause This, it is desirable that crucible should have good thermal shock resistance, corrosion resistance and chemical stability, with improve service life reduce smelt at This.The service life of crucible induction furnace is lower at present, and external imported product is and costly generally in 100 furnaces or so.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of high temperature resistant, high intensity, height Fine and close coefficient of thermal expansion is small, slag-resistant, the corundum crucible of molten steel and preparation method thereof.
The technical solution adopted by the present invention to solve the technical problems is: the corundum crucible, which is characterized in that raw material weight Part composition are as follows: 60 ~ 70 parts of corundum, 20 ~ 25 parts of spinelle, 3 ~ 8 parts of activated alumina, 2 ~ 5 parts of electrically molten magnesia, andalusite 5 ~ 10 Part, 5 ~ 8 parts of bonding agent.
The SiO that the andalusite introduced in corundum crucible of the invention is decomposed to form2In emergy fine powder, alumina powder AL2O3Mullite network is formed by reaction-sintered to be interspersed between aluminium oxide aggregate, improves product thermal shock resistance and intensity. The introducing of alumina powder and andalusite micropowder is advanced to mullitization temperature less than 1000 DEG C, such product have simultaneously compared with Strong high temperature intensity.
Preferably, the corundum is that 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh are rigid The mixing corundum of beautiful sand, 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies mass ratio For 10:24:10:3.Preferred corundum type and grain composition, can guarantee corundum crucible more compact high-strength.
Preferably, the activated alumina is to pacify to step CL370C.
Preferably, the electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm.Preferred electrically molten magnesia kind Class and grain composition can guarantee corundum crucible more compact high-strength.
The spinelle is 100 mesh, 70 electric melting magnesium aluminum spinel, 90 sintering aluminium riched spinel micro mists.
Preferably, the andalusite is 200 mesh andalusite fine powders.
Preferably, the bonding agent be Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water and The mixture of water, Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water and water mass ratio be 0.2 ~ 0.5:0.15 ~ 0.2:3 ~ 5:5 ~ 6.The present invention provides the bonding agent of a kind of unique composition and proportion, can be by raw material in calcination process In it is so close that combine, heat-resistant knocking stability, mechanical property are greatly improved.
A kind of preparation method of corundum crucible, which is characterized in that preparation step are as follows:
1) that mixed powder is made in various fine powder raw materials according to the ratio is spare；
2) it fixes, is placed on shake table after brushing release agent on crucible die, it is spare；
3) it is sequentially placed into blender stirring by the sequence of particulate material, bonding agent, mixed powder, discharged after mixing；
4) shake table is opened, the material being stirred is injected in crucible die, the charging of the side Bian Zhendong continues to shake wait expect full of mold Dynamic discharge air, closes shake table, maintenance 18h ~ demould afterwards for 24 hours, after demoulding semi-finished product, control wet green body it is close >=2.8g/ cm3；
5) through 50 DEG C ~ 110 DEG C drying for 24 hours ~ 48h, dry body residual moisture≤0.5%；It is burnt in 1570 DEG C ~ 1630 DEG C firing 6h ~ 9h At.
Preparation method of the invention is more preferable with material matching, guarantees the yield rate and performance of crucible.
Preferably, through 70 DEG C ~ 80 DEG C drying for 24 hours ~ 26h in step 5).
Preferably, it is burnt into step 5) in 1590 DEG C ~ 1610 DEG C firing 7h ~ 8h.
The better quality of product under preferred preparation condition.
Compared with prior art, possessed beneficial effect of the invention is: invention provides a kind of for hot investment casting work Industry high temperature induction furnace corundum-spinel-mullite crucible.The andalusite fine powder decomposing shape introduced in corundum crucible of the invention At SiO2With the AL in emergy fine powder, alumina powder2O3Mullite network, which is formed, by reaction-sintered is interspersed in aluminium oxide Between aggregate, product thermal shock resistance and intensity are improved.The introducing of alumina powder and andalusite micropowder proposes mullitization temperature Preceding to less than 1000 DEG C, such product has stronger high temperature intensity simultaneously.The fusing point of mullite and magnesium aluminate spinel difference For 1819 DEG C and 2135 DEG C, magnesium aluminate spinel (MA) belongs to cubic system, mullite category orthorhombic system, the thermal expansion and elasticity of the two Modulus have differences (thermal expansion coefficient of spinelle be 7.6 × 10-6/ DEG C, the thermal expansion coefficient of mullite is 5.3 × 10-6/ DEG C), therefore it mullite is added in spinel can play the role of complex phase toughening, the two has high-melting-point, very low Thermal expansivity, the aggressivity of high thermal shock resistance and slag-resistant.
The fused magnesite and AL introduced in corundum crucible of the invention2O3Reaction generates In-suit spinel, is distributed in matrix More uniformly, the FeO and MnO absorbed in slag forms solid solution, can more effectively prevent the infiltration of FeO and MnO in slag, resistance to slag It can improve.
The CL370C introduced in corundum crucible of the invention substitutes general alumina powder, and water-reducing effect is good, improves crucible Elevated temperature strength.
Technique of the invention is formed using gypsum mold.Slurry is vibrated in casting, makes slurry full of the entire mold of jolt ramming Space, product size is accurate, and mold is indeformable, easy processing, and manufacturing cost is cheap.The gypsum later period is overcome to inhale during theing cement solidifies Slurry drains slow disadvantage, shortens demoulding time, improves shaping speed.
Corundum crucible compact high-strength of the present invention, corrosion resistance, heat-resistant knocking stability, mechanical property significantly improve, and use the longevity Life length.1600 DEG C of molten liquid steel or more are born, high temperature resistant is not peeled off, and the resistance to resistance to slag corrosion of molten steel is good, does not pollute molten steel, is used Number up to 200 furnaces more than, it is very stable in hot investment casting and the use of metallurgy industry field.
Specific embodiment
The present invention will be further described combined with specific embodiments below, and wherein embodiment 1 is best implements.
Embodiment 1
1. ingredient: 65 parts of corundum, 22 parts of spinelle, 5 parts of activated alumina, 3 parts of electrically molten magnesia, 3 parts of spinelle, andalusite 8 Part, 6.5 parts of bonding agent；Corundum be 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies, 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies mass ratio be 10:24:10:3；It is living Property aluminium oxide be pacify step CL370C；Electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm, and spinelle is 100 mesh, 70 electricity Molten magnesium aluminate spinel and 90 sintering aluminium riched spinel micro mists；Andalusite is 200 mesh andalusite fine powders；Bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water and water, Lafarge cement SECAR-71, sodium tripolyphosphate, You Jijie The mass ratio of mixture natural gum water and water is 0.3:0.18:4:5.5；
Fine powder is blended: first by corundum fine powder, 370C micro mist, spinelle fine powder and micro mist, aluminous cement and plate diamond spar fine powder It is added screw mixer dry-mixed 20 minutes, it is spare that mixed powder is made；
2. material mixing
(1) gummy water set aside for use is measured；It weighs water-reducing agent to be placed in water, stirring is to being completely dissolved, stand for standby use；
(2) prepare gypsum mold, fix, be placed on shake table after release agent is brushed on crucible die, it is spare；
(3) corundum in granules, magnesia particle are put into blender, mix 6min；
(4) solution in step (1) is poured into blender, continues to stir 4min；
(5) mixing fine powders are put into blender again, stir 15min, controlled pug moisture, discharge after mixing；
3. molding
3.1 plaster cast coarse granule moulding by casting: shake table is opened, the material being stirred is slowly injected into crucible die, Bian Zhen Dynamic side charging continues vibration discharge air, closes shake table, demould after conserving 18h wait expect full of mold, after demoulding half at Product；
3.2 wet base control parameters: wet green body is close: >=2.8g/cm3；
3.3 semi-finished product appearance requirements:
3.3.1 it permissible variation in dimension: is executed by user's pertinent regulations；
3.3.2 the smooth flawless of semi-finished product neat appearance；
4. dry and dress is burnt
4.1 dry 24 hours through 75 DEG C, dry body residual moisture≤0.5%；
4.2 calcining systems: shuttle kiln roasting is controlled according to heating curve and is heated up, 1600 DEG C × 8h firing；
4.3 crucible finished product shape whites, uniform wall thickness, flawless immaculate.
Embodiment 2
1. ingredient: 60 parts of corundum, 25 parts of spinelle, 3 parts of activated alumina, 5 parts of electrically molten magnesia, 5 parts of spinelle, andalusite 5 Part, 8 parts of bonding agent；Corundum is 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar, 240 mesh emergies, 6- 3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies mass ratio be 10:24:10:3；Activity Aluminium oxide is to pacify to step CL370C；Electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm, and spinelle is 100 mesh, 70 electric smelting Magnesium aluminate spinel, 90 sintering aluminium riched spinel micro mists；Andalusite is 200 mesh andalusite fine powders；Bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water, water, Lafarge cement SECAR-71, sodium tripolyphosphate, You Jijie The mass ratio of mixture natural gum water and water is 0.2:0.2:3:6；
Fine powder is blended: first by corundum fine powder, 370C micro mist, spinelle fine powder and micro mist, aluminous cement and plate diamond spar fine powder It is added screw mixer dry-mixed 20 minutes, it is spare that mixed powder is made；
2. material mixing
(1) gummy water set aside for use is measured；It weighs water-reducing agent to be placed in water, stirring is to being completely dissolved, stand for standby use；
(2) prepare gypsum mold, fix, be placed on shake table after release agent is brushed on crucible die, it is spare；
(3) corundum in granules, magnesia particle are put into blender, mix 5min；
(4) solution in step (1) is poured into blender, continues to stir 5min；
(5) mixing fine powders are put into blender again, stir 10min, controlled pug moisture, discharge after mixing；
3. molding
3.1 plaster cast coarse granule moulding by casting: shake table is opened, the material being stirred is slowly injected into crucible die, Bian Zhen Dynamic side charging continues vibration discharge air, closes shake table, demould after conserving 20h wait expect full of mold, after demoulding half at Product；
3.2 wet base control parameters: wet green body is close: >=2.8g/cm3；
3.3 semi-finished product appearance requirements:
3.3.1 it permissible variation in dimension: is executed by user's pertinent regulations；
3.3.2 the smooth flawless of semi-finished product neat appearance；
4. dry and dress is burnt
4.1 dry 26 hours through 70 DEG C, dry body residual moisture≤0.5%；
4.2 calcining systems: shuttle kiln roasting is controlled according to heating curve and is heated up, 1610 DEG C × 7h firing；
4.3 crucible finished product shape whites, uniform wall thickness, flawless immaculate.
Embodiment 3
1. ingredient: 70 parts of corundum, 20 parts of spinelle, 8 parts of activated alumina, 2 parts of electrically molten magnesia, 2 parts of spinelle, andalusite 10 parts, 5 parts of bonding agent；Corundum is 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar, 240 mesh emergies, 6- 3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies mass ratio be 10:24:10:3；Activity Aluminium oxide is to pacify to step CL370C；Electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm, and spinelle is 100 mesh, 70 electric smelting Magnesium aluminate spinel, 90 sintering aluminium riched spinel micro mists；Andalusite is 200 mesh andalusite fine powders；Bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water, water, Lafarge cement SECAR-71, sodium tripolyphosphate, You Jijie The mass ratio of mixture natural gum water and water is 0.5:0.15:5:5；
Fine powder is blended: first by corundum fine powder, 370C micro mist, spinelle fine powder and micro mist, aluminous cement and plate diamond spar fine powder It is added screw mixer dry-mixed 20 minutes, it is spare that mixed powder is made；
2. material mixing
(1) gummy water set aside for use is measured；It weighs water-reducing agent to be placed in water, stirring is to being completely dissolved, stand for standby use；
(2) prepare gypsum mold, fix, be placed on shake table after release agent is brushed on crucible die, it is spare；
(3) corundum in granules, magnesia particle are put into blender, mix 8min；
(4) solution in step (1) is poured into blender, continues to stir 3min；
(5) mixing fine powders are put into blender again, stir 20min, controlled pug moisture, discharge after mixing；
3. molding
3.1 plaster cast coarse granule moulding by casting: shake table is opened, the material being stirred is slowly injected into crucible die, Bian Zhen Dynamic side charging continues vibration discharge air, closes shake table wait expect full of mold, and maintenance demoulds afterwards for 24 hours, after demoulding half at Product；
3.2 wet base control parameters: wet green body is close: >=2.8g/cm3；
3.3 semi-finished product appearance requirements:
3.3.1 it permissible variation in dimension: is executed by user's pertinent regulations；
3.3.2 the smooth flawless of semi-finished product neat appearance；
4. dry and dress is burnt
4.1 dry 24 hours through 80 DEG C, dry body residual moisture≤0.5%；
4.2 calcining systems: shuttle kiln roasting is controlled according to heating curve and is heated up, 1590 DEG C × 8h firing；
4.3 crucible finished product shape whites, uniform wall thickness, flawless immaculate.
Embodiment 4
1. ingredient: 62 parts of corundum, 24 parts of spinelle, 4 parts of activated alumina, 4 parts of electrically molten magnesia, 4 parts of spinelle, andalusite 6 Part, 7 parts of bonding agent；Corundum is 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar, 240 mesh emergies, 6- 3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies mass ratio be 10:10:10:10；It is living Property aluminium oxide be pacify step CL370C；Electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm, and spinelle is 100 mesh, 70 electricity Molten magnesium aluminate spinel, 90 sintering aluminium riched spinel micro mists；Andalusite is 200 mesh andalusite fine powders；Bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water, water, Lafarge cement SECAR-71, sodium tripolyphosphate, You Jijie The mass ratio of mixture natural gum water and water is 0:1:0.3:8:6；
Fine powder is blended: first by corundum fine powder, 370C micro mist, spinelle fine powder and micro mist, aluminous cement and plate diamond spar fine powder It is added screw mixer dry-mixed 20 minutes, it is spare that mixed powder is made；
2. material mixing
(1) gummy water set aside for use is measured；It weighs water-reducing agent to be placed in water, stirring is to being completely dissolved, stand for standby use；
(2) prepare gypsum mold, fix, be placed on shake table after release agent is brushed on crucible die, it is spare；
(3) corundum in granules, magnesia particle are put into blender, mix 6min；
(4) solution in step (1) is poured into blender, continues to stir 4min；
(5) mixing fine powders are put into blender again, stir 15min, controlled pug moisture, discharge after mixing；
3. molding
3.1 plaster cast coarse granule moulding by casting: shake table is opened, the material being stirred is slowly injected into crucible die, Bian Zhen Dynamic side charging is full of mold wait expect, continues vibration discharge air, closes shake table, demould after conserving 18-24h, half is obtained after demoulding Finished product；
3.2 wet base control parameters: wet green body is close: >=2.8g/cm3；
3.3 semi-finished product appearance requirements:
3.3.1 it permissible variation in dimension: is executed by user's pertinent regulations；
3.3.2 the smooth flawless of semi-finished product neat appearance；
4. dry and dress is burnt
4.1 dry 48 hours through 50 DEG C, dry body residual moisture≤0.5%；
4.2 calcining systems: shuttle kiln roasting is controlled according to heating curve and is heated up, 1630 DEG C × 6h firing；
4.3 crucible finished product shape whites, uniform wall thickness, flawless immaculate.
Embodiment 5
1. ingredient: 68 parts of corundum, 22 parts of spinelle, 7 parts of activated alumina, 3 parts of electrically molten magnesia, 3 parts of spinelle, andalusite 9 Part, 6 parts of bonding agent；Corundum is 6-3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar, 240 mesh emergies, 6- 3mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies mass ratio be 24:10:3:10；Activity Aluminium oxide is to pacify to step CL370C；Electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm, and spinelle is 100 mesh, 70 electric smelting Magnesium aluminate spinel, 90 sintering aluminium riched spinel micro mists；Andalusite is 200 mesh andalusite fine powders；Bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water, water, Lafarge cement SECAR-71, sodium tripolyphosphate, You Jijie The mass ratio of mixture natural gum water and water is 0.15:0.6:6:5；
Fine powder is blended: first by corundum fine powder, 370C micro mist, spinelle fine powder and micro mist, aluminous cement and plate diamond spar fine powder It is added screw mixer dry-mixed 20 minutes, it is spare that mixed powder is made；
2. material mixing
(1) gummy water set aside for use is measured；It weighs water-reducing agent to be placed in water, stirring is to being completely dissolved, stand for standby use；
(2) prepare gypsum mold, fix, be placed on shake table after release agent is brushed on crucible die, it is spare；
(3) corundum in granules, magnesia particle are put into blender, mix 7min；
(4) solution in step (1) is poured into blender, continues to stir 4min；
(5) mixing fine powders are put into blender again, stir 18min, controlled pug moisture, discharge after mixing；
3. molding
3.1 plaster cast coarse granule moulding by casting: shake table is opened, the material being stirred is slowly injected into crucible die, Bian Zhen Dynamic side charging is full of mold wait expect, continues vibration discharge air, closes shake table, demould after conserving 18-24h, half is obtained after demoulding Finished product；
3.2 wet base control parameters: wet green body is close: >=2.8g/cm3；
3.3 semi-finished product appearance requirements:
3.3.1 it permissible variation in dimension: is executed by user's pertinent regulations；
3.3.2 the smooth flawless of semi-finished product neat appearance；
4. dry and dress is burnt
4.1 dry 24 hours through 110 DEG C, dry body residual moisture≤0.5%；
4.2 calcining systems: shuttle kiln roasting is controlled according to heating curve and is heated up, 1570 DEG C × 9h firing；
4.3 crucible finished product shape whites, uniform wall thickness, flawless immaculate.
Embodiment 6
1. ingredient: 65 parts of corundum, 22 parts of spinelle, 5 parts of activated alumina, 3 parts of electrically molten magnesia, 3 parts of spinelle, andalusite 8 Part, 6.5 parts of bonding agent；Corundum is 3-1mm plate diamond spar, 1-0mm plate diamond spar, 3-1mm plate diamond spar, 1-0mm plate diamond spar Mass ratio be 10:10；Electrically molten magnesia is 98 fused magnesites that granularity is 0.5-0mm；Andalusite is that 200 mesh andalusites are thin Powder；Bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water and water, Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water and water mass ratio be 0.15:0.6:6:5；
Fine powder is blended: first by corundum fine powder, 370C micro mist, spinelle fine powder and micro mist, aluminous cement and plate diamond spar fine powder It is added screw mixer dry-mixed 20 minutes, it is spare that mixed powder is made；
2. material mixing
(1) gummy water set aside for use is measured；It weighs water-reducing agent to be placed in water, stirring is to being completely dissolved, stand for standby use；
(2) prepare gypsum mold, fix, be placed on shake table after release agent is brushed on crucible die, it is spare；
(3) corundum in granules, magnesia particle are put into blender, mix 6min；
(4) solution in step (1) is poured into blender, continues to stir 4min；
(5) mixing fine powders are put into blender again, stir 15min, controlled pug moisture, discharge after mixing；
3. molding
3.1 plaster cast coarse granule moulding by casting: shake table is opened, the material being stirred is slowly injected into crucible die, Bian Zhen Dynamic side charging continues vibration discharge air, closes shake table, demould after conserving 18h wait expect full of mold, after demoulding half at Product；
3.2 wet base control parameters: wet green body is close: >=2.8g/cm3；
3.3 semi-finished product appearance requirements:
3.3.1 it permissible variation in dimension: is executed by user's pertinent regulations；
3.3.2 the smooth flawless of semi-finished product neat appearance；
4. dry and dress is burnt
4.1 dry 24 hours through 75 DEG C, dry body residual moisture≤0.5%；
4.2 calcining systems: shuttle kiln roasting is controlled according to heating curve and is heated up, 1600 DEG C × 8h firing；
4.3 crucible finished product shape whites, uniform wall thickness, flawless immaculate.
The performance test results of crucible obtained by embodiment are shown in Table 1.
Table 1
。
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.

Claims (9)

1. a kind of corundum crucible, which is characterized in that parts by weight of raw materials composition are as follows: 60 ~ 70 parts of corundum, 20 ~ 25 parts of spinelle, activity 3 ~ 8 parts of aluminium oxide, 2 ~ 5 parts of electrically molten magnesia, 5 ~ 10 parts of andalusite, 5 ~ 8 parts of bonding agent.
2. a kind of corundum crucible according to claim 1, it is characterised in that: the corundum is 6-3mm plate diamond spar, 3- The mixing corundum of 1mm plate diamond spar, 1-0mm plate diamond spar and 240 mesh emergies, 6-3mm plate diamond spar, 3-1mm plate diamond spar, The mass ratio of 1-0mm plate diamond spar and 240 mesh emergies is 10:24:10:3.
3. a kind of corundum crucible according to claim 1, it is characterised in that: the activated alumina is that peace steps CL370C。
4. a kind of corundum crucible according to claim 1, it is characterised in that: the electrically molten magnesia is granularity 0.5- 98 fused magnesites of 0mm.
5. a kind of corundum crucible according to claim 1, it is characterised in that: the andalusite is that 200 mesh andalusites are thin Powder.
6. a kind of corundum crucible according to claim 1, it is characterised in that: the bonding agent is Lafarge cement SECAR-71, sodium tripolyphosphate, organic bond natural gum water and water mixture, Lafarge cement SECAR-71, tripolyphosphate The mass ratio of sodium, organic bond natural gum water and water is 0.2 ~ 0.5:0.15 ~ 0.2:3 ~ 5:5 ~ 6.
7. a kind of preparation method of corundum crucibles described in any item according to claim 1 ~ 6, which is characterized in that preparation step Are as follows:
1) that mixed powder is made in various fine powder raw materials according to the ratio is spare；
2) it fixes, is placed on shake table after brushing release agent on crucible die, it is spare；
3) it is sequentially placed into blender stirring by the sequence of particulate material, bonding agent, mixed powder, discharged after mixing；
4) shake table is opened, the material being stirred is injected in crucible die, the charging of the side Bian Zhendong continues to shake wait expect full of mold Dynamic discharge air, closes shake table, maintenance 18h ~ demould afterwards for 24 hours, after demoulding semi-finished product, control wet green body it is close >=2.8g/ cm3；
5) through 50 DEG C ~ 110 DEG C drying for 24 hours ~ 48h, dry body residual moisture≤0.5%；It is burnt in 1570 DEG C ~ 1630 DEG C firing 6h ~ 9h At.
8. a kind of preparation method of corundum crucible according to claim 7, it is characterised in that: through 70 DEG C ~ 80 in step 5) DEG C drying for 24 hours ~ 26h.
9. a kind of preparation method of corundum crucible according to claim 7, it is characterised in that: in step 5) 1590 DEG C ~ 1610 DEG C of firing 7h ~ 8h firings.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114213109A (en) * 2021-12-30 2022-03-22 辽宁省轻工科学研究院有限公司 High-precision and high-strength ceramic hand mold and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531645A (en) * 2011-11-22 2012-07-04 中山市华山特种陶瓷有限公司 Corundum Calcium Magnesium Aluminum Spinel Crucible
CN103121850A (en) * 2012-07-04 2013-05-29 卫辉熔金高温材料有限责任公司 Non-cement-bound corundum fabricated part and production method thereof
CN103482989A (en) * 2013-09-06 2014-01-01 浙江自立股份有限公司 Magnesium aluminate spinel castable and method for producing prefabricated brick by using castable
CN104250099A (en) * 2013-06-25 2014-12-31 上海宝钢工业技术服务有限公司 Al2O3-MgO refractory castable and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531645A (en) * 2011-11-22 2012-07-04 中山市华山特种陶瓷有限公司 Corundum Calcium Magnesium Aluminum Spinel Crucible
CN103121850A (en) * 2012-07-04 2013-05-29 卫辉熔金高温材料有限责任公司 Non-cement-bound corundum fabricated part and production method thereof
CN104250099A (en) * 2013-06-25 2014-12-31 上海宝钢工业技术服务有限公司 Al2O3-MgO refractory castable and preparation method thereof
CN103482989A (en) * 2013-09-06 2014-01-01 浙江自立股份有限公司 Magnesium aluminate spinel castable and method for producing prefabricated brick by using castable

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
袁林等: "《绿色耐火材料》", 31 January 2015, 北京：中国建材工业出版社 *
高振昕等: "《耐火材料显微结构》", 30 June 2002, 冶金工业出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114213109A (en) * 2021-12-30 2022-03-22 辽宁省轻工科学研究院有限公司 High-precision and high-strength ceramic hand mold and preparation method thereof
CN114213109B (en) * 2021-12-30 2023-03-10 辽宁省轻工科学研究院有限公司 High-precision and high-strength ceramic hand mold and preparation method thereof

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