CN1300538C - New type line frequency coreless induction furnace crucible - Google Patents
New type line frequency coreless induction furnace crucible Download PDFInfo
- Publication number
- CN1300538C CN1300538C CNB011274751A CN01127475A CN1300538C CN 1300538 C CN1300538 C CN 1300538C CN B011274751 A CNB011274751 A CN B011274751A CN 01127475 A CN01127475 A CN 01127475A CN 1300538 C CN1300538 C CN 1300538C
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- CN
- China
- Prior art keywords
- crucible
- induction furnace
- fine powder
- coreless induction
- frequency coreless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Crucibles And Fluidized-Bed Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention belongs to the manufacturing technique of a line-frequency coreless electric furnace for smelting zinc alloy. A castable refractory of a novel line-frequency coreless induction furnace crucible given by the present invention has the components in the following mixture ratio (wt%): 50 to 80 of treated kaolin grains of which the grain size is 0 to 6mm as aggregates, 15 to 40 of a mixture of high-aluminum fine powder and corundum fine powder (10 to 25 of each of the high-aluminum fine powder and the corundum fine powder) and 5 to 10 of the modified aluminate cement as a binding agent. According to industrial tests, a 3T or 6T coreless furnace with the mains-frequency coreless induction furnace crucible disclosed by the present invention can perform continuous operation for 3, 000 to 4, 000 furnaces, which greatly prolongs the service life of the electric furnace.
Description
(1) technical field:
The invention belongs to kirsite melting line frequency coreless Electric Cooker technology for making, mainly propose a kind of new type line frequency coreless induction furnace crucible.
(2) background technology:
In the kirsite smelting equipment, line frequency coreless induction furnace is the most important equipment of energy stable mass production high-quality alloy.The centreless electric furnace body is made of crucible (furnace lining), inductor, yoke, bell, grate and turndown device.And kirsite coreless induction furnace major failure is exactly a crucible leakage zinc, the possibility that does not almost have reparation in case crucible leaks zinc, not only to heavily change crucible, also might damage coil and insulation, body of heater is thoroughly scrapped, therefore one the termination that zinc then means a lining durability occurs leaking, and especially at the kirsite coreless induction furnace of the 3T～20T of large-scale production, this loss is very big.With 3 tons of zinc-melting furnaces is example, and the crucible specification is about about φ 1.0M * 1.4M, and crucible thickness is about about 100mm, the static pressure that bear the bottom is several tons, also will bear when toppling over, the enormous impact of temperature and mechanical force has proposed requirements at the higher level to the crucible of coreless furnace.Coreless furnace crucible during tradition is used, based on clay---black-fead crucible, also useful other metal or nonmetallic materials, but its service life is all undesirable.Especially surpass φ 800mm at the crucible diameter, when highly surpassing the 1M size, life-span is shorter, only have tens times to tens times, and crucible is as the critical component of centreless main frequency furnace, extend processing, preparation intermediate alloy, hot-dip galvanized alloy, casting alloy, the requisite process equipment of Rare-earth Zinc Alloys as each big zinc factory product, become the principal element that domestic each the zinc smeltery of restriction produces kirsite the service life of crucible.
(3) summary of the invention:
Purpose of the present invention promptly is to propose a kind of new type line frequency coreless induction furnace crucible, so that it has long service life, overcomes the defective that existing line frequency coreless induction furnace crucible exists.
The present invention finishes the technical scheme that its invention task proposed: line frequency coreless induction furnace crucible is formed by the castable refractory cast, therefore the present invention has carried out deep research and analysis than short problem constituent material composition and its service life to existing crucible when proposing technical scheme, and through repeatedly experiment for a long time, the component and the percentage by weight that propose castable refractory of the present invention on this basis are: the kaolin particle that will handle is as aggregate, wherein the 3-6mm addition 30,0-3mm addition 40; High-alumina fly addition 13, schmigel addition 12, bond is a modified aluminate cement, addition 5.
Using method of the present invention: the induction coil external insulation layer is smeared one deck interleaving agent earlier, then the crucible internal mold is fixed, castable refractory of the present invention is directly added water stir, the moulding by casting crucible.
The bulk density of line frequency coreless induction furnace crucible of the present invention is＞2.4g/cm that rupture strength is 110 ℃ * 24h 6.8Mpa, 1100 ℃ * 3h 10.0Mpa, compression strength is 110 ℃ * 24h 40.5Mpa, 1100 ℃ * 3h 62Mpa, line is changed to 1100 ℃ * 24h, ± 0.20.
The mains-frequency coreless induction furnace crucible that the present invention proposes can turn round 3 in the strain smelting through commerical test 3T, 6T coreless furnace, 000-4,000 stove, the service life of greatly having improved electric furnace continuously.
(4) specific embodiment:
Embodiment:
1, earlier the inductor inwall is added one deck packing material
2, supporting crucible internal mold
3, the crucible material being added water stirs
4, directly pour into a mould at the scene
Aggregate:
The kaolin particle 3-6mm 30% that handled
The kaolin particle 0-3mm 40% that handled
Fine powder:
High-alumina fly 13%
Schmigel 12%
Modified aluminate cement 5%
Claims (1)
1, a kind of new type line frequency coreless induction furnace crucible is formed by the castable refractory cast; It is characterized in that: the component of castable refractory and percentage by weight are: the kaolin particle that will handle is as aggregate, and wherein the 3-6mm addition 30,0-3mm addition 40; High-alumina fly addition 13, schmigel addition 12, bond is a modified aluminate cement, addition 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011274751A CN1300538C (en) | 2001-10-23 | 2001-10-23 | New type line frequency coreless induction furnace crucible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011274751A CN1300538C (en) | 2001-10-23 | 2001-10-23 | New type line frequency coreless induction furnace crucible |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414329A CN1414329A (en) | 2003-04-30 |
| CN1300538C true CN1300538C (en) | 2007-02-14 |
Family
ID=4667426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011274751A Expired - Lifetime CN1300538C (en) | 2001-10-23 | 2001-10-23 | New type line frequency coreless induction furnace crucible |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1300538C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10182254A (en) * | 1996-12-19 | 1998-07-07 | Tokyo Yogyo Co Ltd | Monolithic refractory for induction furnace |
-
2001
- 2001-10-23 CN CNB011274751A patent/CN1300538C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10182254A (en) * | 1996-12-19 | 1998-07-07 | Tokyo Yogyo Co Ltd | Monolithic refractory for induction furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1414329A (en) | 2003-04-30 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180419 Address after: 471000 Luoyang Fengli industrial district, Henan Province Patentee after: Powder technology special refractories Co., Ltd of Lip river, Luoyang City China Address before: 471632 Luoyang City, Henan province Yiyang Feng Li Industrial District Patentee before: Luohua Special Refractory Factory of Powder Engineering, Luoyang City |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070214 |
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| CX01 | Expiry of patent term |