CN110183212A - A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter and preparation method thereof - Google Patents
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter and preparation method thereof Download PDFInfo
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- CN110183212A CN110183212A CN201910461331.8A CN201910461331A CN110183212A CN 110183212 A CN110183212 A CN 110183212A CN 201910461331 A CN201910461331 A CN 201910461331A CN 110183212 A CN110183212 A CN 110183212A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
- C04B35/0435—Refractories from grain sized mixtures containing refractory metal compounds other than chromium oxide or chrome ore
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
- C04B2235/321—Dolomites, i.e. mixed calcium magnesium carbonates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
Abstract
The present invention relates to a kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, product is loose, dry shape, uniformly gathers materials, and component includes burnt dolomite sand particle, fused magnesite, desiliconization electric-melting zirconia；Each component is 1~19 part including 6mm≤partial size > 3mm dolomite sand by weight；3mm≤partial size > 1mm dolomite sand is 20~30 parts；1mm≤partial size > 0.3mm dolomite sand is 0~13 part；1mm≤partial size > 0mm fused magnesite is 20~40 parts, 15~23 parts of fused magnesite of 0.045mm≤partial size > 0.074mm, 2~6.5 parts of the desiliconization electric-melting zirconia of 325 mesh.The dry dnockout of the present invention has desulfidation；Remove non-metallic inclusions in molten steel, cleaning molten steel；High-temperature behavior is good；Improve thermal shock resistance；Refractoriness is high.
Description
Technical field
The present invention relates to refractory material, in particular to a kind of intermediate frequency furnace the furnace lining dry dnockout of conite matter and its system
Preparation Method.
Background technique
Intermediate frequency furnace have many advantages, such as efficiently, energy conservation, ingredient easily adjusts, atmosphere it is easy to control, thus casting, steel-making give birth to
Produce etc., is widely applied in China.In recent years, with the exploitation of high-power thyristor variable-frequency power sources and reliability
It improves, intermediate frequency furnace gradually develops to large capacity, high power direction, and operating condition is increasingly harsh, thus to furnace lining fire proofed wood
Material needs requirements at the higher level.
Intermediate frequency furnace furnace lining refractory material is divided into acid, neutral, alkaline three types by its nature.Melting iron,
It is raw material that the furnace linings such as ordinary carbon steel, low-alloy steel select cheap natural quartz with refractory material substantially, produces (acidity)
The dry dnockout of quartziferous.The furnace linings such as fusing cast steel, special steel, stainless steel select fused magnesite or magnesite clinker with refractory material substantially
(alkalinity) magnesia dry dnockout is produced for raw material.Or it is brilliant with (alkalinity) magnesium point that magnesia is raw material addition spinel charge production
Shi Zhigan dnockout.It furthermore is that primary raw material addition magnesia or spinel charge are made (neutrality) aluminate matter and do with electro-corundum
Dnockout.
The shortcomings that above dry dnockout, is it is obvious that acid dry dnockout refractoriness is low, and wherein contains principal component SiO2 to steel
Quality has an impact.The dry dnockout of alkalinity occurs being cracked and peeling off in large capacity intermediate frequency furnace；It is only suitable for small, miniature Medium frequency induction
Furnace.And principal component Al2O3 is a kind of non-metallic inclusion in neutral dry dnockout, pollutes molten steel.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of intermediate frequency furnace furnace lining dry dnockouts of conite matter, protect
The matter phase is long, reduces sinter layer thickness, is free of molten steel objectionable impurities, and can remove non-metallic inclusions in molten steel, cleaning molten steel.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of intermediate frequency furnace furnace lining dry dnockout of magnesium white clouds matter, product are loose, dry shape, uniformly gather materials, and component includes
Burnt dolomite sand particle, 97 fused magnesites, desiliconization electric-melting zirconia；Each component by weight, including 6mm≤partial size > 3mm
Dolomite sand be 1~19 part；3mm≤partial size > 1mm dolomite sand is 20~30 parts；1mm≤partial size > 0.3mm white clouds
Stone sand is 0~13 part；1mm≤partial size > 0mm fused magnesite is 20~40 parts, 0.045mm≤partial size > 0.074mm electric smelting
15~23 parts of magnesia, 2~6.5 parts of the desiliconization electric-melting zirconia of 325 mesh.
The burnt dolomite sand particle is that the partial size of high temperature rotary kiln dinectly bruning sieves in the natural particle of 0-8mm
It chooses.
The physical and chemical index of the dolomite sand are as follows: MgO≤40%, CaO≤53%, Al2O3+Fe2O3+SiO2≤
2.5%；Particle volume Mi Du≤3.26g/cm3,
Fused magnesite MgO≤97%, particle volume Mi Du≤3.41g/cm3,
ZrO2≤99% in the desiliconization electric-melting zirconia.
A kind of preparation method of the intermediate frequency furnace furnace lining dry dnockout of conite matter, specific as follows:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm, 1mm≤partial size > 0.3mm；To fused magnesite through broken, crushing system
System, filters out following partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm respectively.
2) each raw material goes magnetic treatment；
3) standby after fused magnesite and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio
With；
4) dolomite sand is put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
1800 degree of high temperature rotary kiln temperature >.
A kind of application of the intermediate frequency furnace furnace lining dry dnockout of conite matter directly falls dry dnockout in intermediate frequency furnace
The position used, it is dry under the gravity of manpower or machinery to get to densification furnace lining, in intermediate frequency furnace use process, densification
Furnace lining forms 10~15mm sinter layer, 25~30mm transition zone under 1620~1780 DEG C of smelting temperatures.
Compared with prior art, the beneficial effects of the present invention are:
1. raw material dolomite sand is based on high calcium, supplemented by low magnesium, desiliconization electric-melting zirconia principal component ZrO2 fusing point is high about
2750 DEG C, ZrO2 can form a compound calcium zirconate CaZrO3 with dolomite sand principal component CaO at high temperature, and fusing point is at 2300 DEG C
More than, dystectic CaZrO3 occurs improving the thermal structure intensity of dolomite sand, and thermal shock resistance is remarkably reinforced, and resistance to slag is big
It is big to improve, therefore its service life can be improved.
2. raw material desiliconization electric-melting zirconia, avoid SiO2 with oxide impurity Al2O3, Fe2O3 in conite sand etc. with
Principal component CaO, MgO forms calcium containing compound impurity, improves high-temperature behavior.
3. raw material dolomite sand uses the natural particle of high temperature rotary kiln calcining, without crushing, particle homogenization ratio
Preferably, particle surface forms densified thin film after high temperature firing, in the natural particle sintering procedure of high temperature rotary kiln calcining
For the fuel that rotary kiln uses for heavy oil, objectionable impurities content is low, and total impurities (Al2O3+Fe2O3+SiO2) can control
2.5% hereinafter, the natural particle hydration resistance of calcined by rotary kiln is strong, and extension shelf life of products was up to 2 years or more.
4. dry dnockout, which does not add any rush, burns agent and bonding agent, combination is by fine powder at high temperature from sintering to meet
Sinter layer thickness.Because at 1620~1720 DEG C, some maximum temperatures reach normal temperature intermediate frequency furnace in smelting process
1780 DEG C, smelting condition is very severe.It is any in product to promote to burn agent or bonding agent more or less capital shadow at high operating temperatures
The porosity and bulk density for ringing product, eventually lead to the increase of the porosity, the decline of bulk density, will have a direct impact on product
Impermeabilisation ability accelerates erosive velocity.
5. raw material is handled by magnetic material, magnetisable material is selected using magnetic separator.It is high temperatures that magnetisable material will affect product
It can decline, promote material sintering, make material sinter layer excess agglomeration, tear furnace difficulty open, increase crackle generation in use process, cause
The accidents such as steel and bleed-out of infiltration.
6. the dry dnockout of the present invention has desulfidation；Remove non-metallic inclusions in molten steel, cleaning molten steel；High-temperature behavior is good；
Improve thermal shock resistance；Refractoriness is high.
7. the dry dnockout of conite matter is applied to generally burn agent added with rush when ladle and tundish, and does not have so far in intermediate frequency furnace
There is application.The present invention takes the lead in being applied to intermediate frequency furnace, and is not stood comparison from agglomerated material key technology mechanism.
Specific embodiment
Below with reference to embodiment, the present invention is further described:
The present invention will be described in detail for following embodiment.These embodiments be only to preferred embodiment of the invention into
Row description, does not limit the scope of the present invention.
Embodiment 1
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, raw material include:
A: dolomite sand 6mm≤partial size > 3mm, 17 parts；
B: dolomite sand 3mm≤partial size > 1mm, 25 parts；
D: fused magnesite 1mm≤partial size > 0mm, 36 parts；
F: fused magnesite 0.045mm≤partial size > 0.074mm, 19 parts；
325 mesh of desiliconization electric-melting zirconia, 3 parts.
The preparation method of above-mentioned dry dnockout, comprising:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm；To fused magnesite through broken, crushing system, filter out respectively following
Partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm.
2) each raw material goes magnetic treatment；
3) spare after raw material D, F and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) raw material A, B are put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
In intermediate frequency furnace use process, formation 12~15mm sinter layer under 1620~1780 DEG C of smelting temperatures, 25~
28mm transition zone.
Embodiment 2
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, raw material include:
A: dolomite sand 6mm≤partial size > 3mm, 10 parts；
B: dolomite sand 3mm≤partial size > 1mm, 22 parts；
D: fused magnesite 1mm≤partial size > 0mm, 28 parts；
F: fused magnesite 0.045mm≤partial size > 0.074mm, 16 parts；
325 mesh of desiliconization electric-melting zirconia, 3.5 parts.
The preparation method of above-mentioned dry dnockout, comprising:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm；To fused magnesite through broken, crushing system, filter out respectively following
Partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm.
2) each raw material goes magnetic treatment；
3) spare after raw material D, F and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) raw material A, B are put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
In intermediate frequency furnace use process, formation 10~15mm sinter layer under 1620~1780 DEG C of smelting temperatures, 25~
30mm transition zone.
Embodiment 3
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, raw material include:
A: dolomite sand 6mm≤partial size > 3mm, 15 parts；
B: dolomite sand 3mm≤partial size > 1mm, 28 parts；
D: fused magnesite 1mm≤partial size > 0mm, 24 parts；
F: fused magnesite 0.045mm≤partial size > 0.074mm, 18 parts；
325 mesh of desiliconization electric-melting zirconia, 4 parts.
The preparation method of above-mentioned dry dnockout, comprising:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm；To fused magnesite through broken, crushing system, filter out respectively following
Partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm.
2) each raw material goes magnetic treatment；
3) spare after raw material D, F and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) raw material A, B are put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
In intermediate frequency furnace use process, formation 10~13mm sinter layer under 1620~1780 DEG C of smelting temperatures, 26~
30mm transition zone.
Embodiment 4
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, raw material include:
A: dolomite sand 6mm≤partial size > 3mm, 17 parts；
B: dolomite sand 3mm≤partial size > 1mm, 25 parts；
C: dolomite sand 1mm≤partial size > 0.3mm, 11 parts
D: fused magnesite 1mm≤partial size > 0mm, 25 parts；
F: fused magnesite 0.045mm≤partial size > 0.074mm, 16 parts；
325 mesh of desiliconization electric-melting zirconia, 6 parts.
The preparation method of above-mentioned dry dnockout, comprising:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm, 1mm≤partial size > 0.3mm；To fused magnesite through broken, crushing system
System, filters out following partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm respectively.
2) each raw material goes magnetic treatment；
3) spare after raw material D, F and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) raw material A, B, C are put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
In intermediate frequency furnace use process, formation 10~15mm sinter layer under 1620~1780 DEG C of smelting temperatures, 25~
30mm transition zone.
Embodiment 5
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, raw material include:
A: dolomite sand 6mm≤partial size > 3mm, 15 parts；
B: dolomite sand 3mm≤partial size > 1mm, 23 parts；
C: dolomite sand 1mm≤partial size > 0.3mm, 11 parts
D: fused magnesite 1mm≤partial size > 0mm, 35 parts；
F: fused magnesite 0.045mm≤partial size > 0.074mm, 20 parts；
325 mesh of desiliconization electric-melting zirconia, 5.5 parts.
The preparation method of above-mentioned dry dnockout, comprising:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm, 1mm≤partial size > 0.3mm；To fused magnesite through broken, crushing system
System, filters out following partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm respectively.
2) each raw material goes magnetic treatment；
3) spare after raw material D, F and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) raw material A, B, C are put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
In intermediate frequency furnace use process, formation 12~15mm sinter layer under 1620~1780 DEG C of smelting temperatures, 27~
30mm transition zone.
Embodiment 6
A kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, raw material include:
A: dolomite sand 6mm≤partial size > 3mm, 16 parts；
B: dolomite sand 3mm≤partial size > 1mm, 25 parts；
C: dolomite sand 1mm≤partial size > 0.3mm, 10 parts
D: fused magnesite 1mm≤partial size > 0mm, 25 parts；
F: fused magnesite 0.045mm≤partial size > 0.074mm, 16 parts；
325 mesh of desiliconization electric-melting zirconia, 5 parts.
The preparation method of above-mentioned dry dnockout, comprising:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively
Following partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm, 1mm≤partial size > 0.3mm；To fused magnesite through broken, crushing system
System, filters out following partial size: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm respectively.
2) each raw material goes magnetic treatment；
3) spare after raw material D, F and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) raw material A, B, C are put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
In intermediate frequency furnace use process, formation 10~15mm sinter layer under 1620~1780 DEG C of smelting temperatures, 25~
30mm transition zone.
Claims (7)
1. a kind of intermediate frequency furnace furnace lining dry dnockout of conite matter, which is characterized in that product is loose, dry shape, uniformly collection
Material, component includes burnt dolomite sand particle, fused magnesite, desiliconization electric-melting zirconia；Each component by weight, including 6mm≤
The dolomite sand of partial size > 3mm is 1~19 part；3mm≤partial size > 1mm dolomite sand is 20~30 parts；1mm≤partial size >
The dolomite sand of 0.3mm is 0~13 part；1mm≤partial size > 0mm fused magnesite is 20~40 parts, 0.045mm≤partial size >
15~23 parts of the fused magnesite of 0.074mm, 2~6.5 parts of the desiliconization electric-melting zirconia of 325 mesh.
2. a kind of intermediate frequency furnace furnace lining dry dnockout of conite matter according to claim 1, which is characterized in that described
Burnt dolomite sand particle be high temperature rotary kiln dinectly bruning partial size acquirement is screened in the natural particle of 0-8mm.
3. a kind of intermediate frequency furnace furnace lining dry dnockout of conite matter according to claim 1, which is characterized in that described
Dolomite sand physical and chemical index are as follows: MgO≤40%, CaO≤53%, Al2O3+Fe2O3+SiO2≤2.5%；Particle volume is close
Du≤3.26g/cm3。
4. a kind of intermediate frequency furnace furnace lining dry dnockout of conite matter according to claim 1, which is characterized in that described
Fused magnesite MgO≤97%, particle volume Mi Du≤3.41g/cm3。
5. a kind of intermediate frequency furnace furnace lining dry dnockout of conite matter according to claim 1, which is characterized in that described
Desiliconization electric-melting zirconia in ZrO2≤99%.
6. a kind of preparation method of the intermediate frequency furnace furnace lining dry dnockout of conite matter, which is characterized in that specific as follows:
1) the dolomite sand particle to the partial size of high temperature rotary kiln dinectly bruning in 0-8mm screens, and filters out respectively following
Partial size: 6mm≤partial size > 3mm, 3mm≤partial size > 1mm, 1mm≤partial size > 0.3mm；Fused magnesite is broken, crushing system,
Following partial size is filtered out respectively: 1mm≤partial size > 0mm, 0.045mm≤partial size > 0.074mm.
2) each raw material goes magnetic treatment；
3) spare after fused magnesite and desiliconization electric-melting zirconia investment premixing machine being carried out premix 20~30 minutes according to the ratio；
4) dolomite sand is put into batch mixer according to the ratio, carries out mixing 7~10 minutes；
5) material after step 1) premix is added in the material of step 2) and is mixed 30~35 minutes, discharged；
6) finished product is packed out.
7. a kind of application of the intermediate frequency furnace furnace lining dry dnockout of conite matter, which is characterized in that directly by dry dnockout fall in
The position that intermediate frequency furnace uses, it is dry under the gravity of manpower or machinery to get to densification furnace lining, it was used in intermediate frequency furnace
Cheng Zhong, densification furnace lining form 10~15mm sinter layer, 25~30mm transition zone under 1620~1780 DEG C of smelting temperatures.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270088A (en) * | 2020-02-10 | 2020-06-12 | 中国恩菲工程技术有限公司 | System and method for continuously smelting magnesium by induction heating liquid stirring |
| CN112875738A (en) * | 2021-02-01 | 2021-06-01 | 大冶市鑫鼎实业有限公司 | Process for refining dolomite purity by decomposition and desulfurization |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270088A (en) * | 2020-02-10 | 2020-06-12 | 中国恩菲工程技术有限公司 | System and method for continuously smelting magnesium by induction heating liquid stirring |
| CN111270088B (en) * | 2020-02-10 | 2023-10-13 | 中国恩菲工程技术有限公司 | System and method for continuously smelting magnesium by liquid stirring through induction heating |
| CN112875738A (en) * | 2021-02-01 | 2021-06-01 | 大冶市鑫鼎实业有限公司 | Process for refining dolomite purity by decomposition and desulfurization |
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