CN110440594A - Self-baking electrode titanium slag smelting furnace full sealing apparatus - Google Patents
Self-baking electrode titanium slag smelting furnace full sealing apparatus Download PDFInfo
- Publication number
- CN110440594A CN110440594A CN201910809494.0A CN201910809494A CN110440594A CN 110440594 A CN110440594 A CN 110440594A CN 201910809494 A CN201910809494 A CN 201910809494A CN 110440594 A CN110440594 A CN 110440594A
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- CN
- China
- Prior art keywords
- bell
- self
- baking electrode
- sealing
- titanium slag
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The present invention relates to a kind of self-baking electrode titanium slag smelting furnace full sealing apparatus, belong to titanium slag smelting furnace technical field.The present invention is first between the flange of adjacent bell unit by increasing the sealing of mica insulation plate; effectively increase sealing effect; furthermore the positions such as annulus on the outside of charging aperture, self-baking electrode hole, floss hole, bell between furnace shell inner wall; devise sealing structure; integral sealing effect is good; the totally-enclosed of self-baking electrode titanium slag electric furnace can be achieved; the excessive of flue gas can be reduced, reduction noise, heat loss, gas recovery is reduced and is used; biggish economic benefit can be created, and is conducive to environmental protection.
Description
Technical field
The present invention relates to a kind of self-baking electrode titanium slag smelting furnace full sealing apparatus, belong to titanium slag smelting furnace technical field.
Background technique
Domestic titanium slag smelting technique mostly uses greatly self-baking electrode semi-hermetic round kiln to smelt at present, and production technology uses one
Secondary charging interruption is smelted, major defect are as follows: first is that flue gas exists outer when electric furnace operates under conditions of unlimited or semi-enclosed
The problem of row, pollutes environment；Second is that electric furnace does not have closed, the thermal efficiency is low, and every consumption indicators are higher.Even if there is a small number of enterprises to adopt
With closed bell, but since sealing effect is bad, flue gas is also not easy to collect.Such as the prior art shown in FIG. 1, furnace
Convering system is assembled by 9 bell units in outside and 3 bell units at center, is installed by 9 cantilever drapes, adjacent
Gap between two bell units is 60mm, closed by T-type brick, because bell system is hanging suspended state, by electric current arteries and veins
The reasons such as dynamic influence, furnace reduction atmosphere, poor sealing effect, flue gas is excessive everywhere, collects difficult.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of self-baking electrode titanium slag smelting furnace full sealing apparatus, seal
Effect is more preferable.
To solve above-mentioned technical problem the technical scheme adopted by the invention is that: self-baking electrode titanium slag smelting furnace totally-enclosed dress
It sets, including bell, bell is assembled by multiple bell units, passes through flange coordinated insulation spiral shell between two neighboring bell unit
Bolt is connected, and charging aperture, self-baking electrode hole and floss hole, charging aperture, self-baking electrode hole and floss hole difference are provided on bell
It is provided with sealing structure, in the connection structure between two neighboring bell unit, mica insulation plate is provided between two pieces flange.
Further, the sealing structure of charging aperture is, connecting cylinder, connecting cylinder and charging aperture are welded in bell upper surface
Coaxial arrangement, connecting cylinder top are fixedly installed connecting flange, and charging nozzle is installed in charging aperture, and the space on the outside of charging nozzle is logical
It crosses annular brick, ceramic fibre filler and lightening casting material and carries out knotting filling, installation is had good positioning after charging nozzle, then successively installation is exhausted
Supported flange and connecting flange, are connected and fixed by lot or luck by which people are brought together orchid, ceramic fibre sealing ring, supported flange by insulated bolt.
Further, bell position and connecting cylinder position are equal when the space to charging nozzle outer wall knot filling
Filling is full.
Further, the sealing structure in self-baking electrode hole is, self-baking electrode is installed on self-baking electricity by seal guide sleeve
In the hole of pole, the sealing structure between seal guide sleeve and bell includes corundum sealing brick, the ceramics fibre set gradually from lower to upper
Tie up sealing ring, the sealing structure between self-baking electrode and seal guide sleeve include the nitrogen-sealed ring set gradually from lower to upper,
Brass sealing ring.
Further, seal guide sleeve is connected by insulating flange with fitted bolt with bell, corundum seals brick bottom
Portion is set to the hole wall of bell, and corundum, which seals, has evagination position at the top of brick, and evagination position is assemblied between two pieces insulating flange, makes pottery
Porcelain fibrous encapsulation ring is assemblied between upper portion insulating flange bottom and corundum sealing brick top surface.
Further, brass sealing ring is upper layer and lower layer；Brass sealing ring, which leads to hold-down bolt cooperation spring, is locked,
Spring pocket is set on the threaded rod of hold-down bolt, and spring end is contacted with brass sealing ring, hold-down bolt and seal guide sleeve spiral shell
Line connection.
Further, the sealing structure of floss hole is, water-cooled flue is suspended in above bell, is welded in bell upper surface
There is cylinder, cylinder and floss hole are coaxially disposed, and bell upper surface is disposed with ceramic fibre in the intracorporal region of cylinder from lower to upper
Blanket, annular brick are tieed up, water-cooled flue is mounted on annular brick upper surface, annular brick upper surface, cylinder inboard wall side wall outside water-cooled flue
At region poured by lightening casting material.
Further, further including furnace shell, backup lining brick, the second ceramic fiber blanket are disposed in furnace shell from lower to upper,
Bell is mounted on the second ceramic fiber blanket upper surface, the annulus on the outside of bell between furnace shell inner wall by lightening casting material into
Row pours.
Further, bell is hung by the multiple equally distributed cantilevers being fixed on furnace shell and the multiple of upper platform
Hang the top for being fixed on furnace body.
Further, cantilever is three.
The beneficial effects of the present invention are: the present invention is first between the flange of adjacent bell unit by increasing mica insulation
Plate sealing, effectively increase sealing effect, furthermore on the outside of charging aperture, self-baking electrode hole, floss hole, bell with furnace shell inner wall it
Between the positions such as annulus, devise sealing structure, integral sealing effect is good, it can be achieved that self-baking electrode titanium slag electric furnace is entirely close
It closes, the excessive of flue gas can be reduced, reduction noise, heat loss, gas recovery is reduced and be used, biggish warp can be created
Ji benefit, and be conducive to environmental protection.
Detailed description of the invention
Fig. 1 is the bell overall structure diagram of the prior art；
Fig. 2 is bell overall structure diagram of the invention；
Fig. 3 is the attachment structure schematic diagram in the present invention between two neighboring bell unit；
Fig. 4 is the sealed structural schematic diagram of charging aperture in the present invention；
Fig. 5 is the sealed structural schematic diagram in self-baking electrode hole in the present invention；
Fig. 6 is the sealed structural schematic diagram of floss hole in the present invention；
Fig. 7 is the sealed structural schematic diagram in the present invention between bell and furnace shell.
Marked in the figure: 1- bell, 2- flange, 3- charging aperture, 4- self-baking electrode hole, 5- floss hole, 6- mica insulation plate, 7-
Furnace shell, 8- cantilever, 31- connecting cylinder, 32- connecting flange, 33- charging nozzle, 34- supported flange, 41- seal guide sleeve, 42- corundum
Seal brick, 43- ceramic fibre sealing ring, 44- nitrogen-sealed ring, 45- brass sealing ring, 46- hold-down bolt, 47- spring, 51-
Water-cooled flue, 52- cylinder, 53- ceramic fiber blanket, 54- annular brick, 71- backup lining brick, the second ceramic fiber blanket of 72-.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figures 2 and 3, the present invention includes bell 1, and bell 1 is assembled by multiple bell units, two neighboring furnace
It is connected between cap unit by 2 fitted bolt of flange, charging aperture 3, self-baking electrode hole 4 and floss hole 5 is provided on bell 1,
Charging aperture 3, self-baking electrode hole 4 and floss hole 5 are respectively arranged with sealing structure, the connection structure between two neighboring bell unit
In, mica insulation plate 6 is provided between two pieces flange 2.The bolt used when connection should select insulated bolt.The present invention is adjacent
It is sealed between the flange 2 of bell unit by increasing mica insulation plate 6, effectively increases sealing effect.The quantity of bell unit
Can design according to the actual situation, in the present embodiment use 21 pieces of tubular types and board-like integrated structure.
There are 13 charging apertures 3 in the present embodiment on bell 1, it is closed bad to be equivalent to 13 diffusing chimneys or 13 air-breathings
Mouthful.As shown in figure 4, sealing structure of the present invention in 3 position of charging aperture is, it is welded with connecting cylinder 31 in 1 upper surface of bell, is connected
Cylinder 31 is coaxially disposed with charging aperture 3, is fixedly installed connecting flange 32 at the top of connecting cylinder 31, charging nozzle 33 is installed on charging aperture 3
Interior, the space in 33 outside of charging nozzle carries out knotting filling by annular brick, ceramic fibre filler and lightening casting material, and installation is fixed
After the good charging nozzle 33 in position, then insulating flange, ceramic fibre sealing ring, supported flange 34 are successively installed, will be pressed by insulated bolt
Tight flange 34 and connecting flange 32 are connected and fixed.The sealing means not only ensure that insulation but also ensure sealing.It is close to be effectively ensured
Effect is sealed, when the space to 33 outer wall of charging nozzle knot filling, 1 position of bell and 31 position of connecting cylinder are filled completely.
The sealing of bell 1 and self-baking electrode is a ring of most critical.Self-baking electrode structure is more complicated, and electrode interior is by leading
Electrical contact element assembly, water cooled electrode base ring assembly, motor case member and insulated enclosure packing material etc. assemble, Water-cooled bottom
Ring and contact element protection screen, cooling water water pipe are all connect by hose with extraneous steel pipe, and sealing is bad, and when electric furnace smelting leaps up
Fiery easily scaling loss hose leak.As shown in figure 5, sealing structure of the present invention in 4 position of self-baking electrode hole is, self-baking electrode passes through close
Envelope guide sleeve 41 be installed in self-baking electrode hole 4, the sealing structure between seal guide sleeve 41 and bell 1 include from lower to upper according to
The corundum of secondary setting seals brick 42, ceramic fibre sealing ring 43, the sealing structure packet between self-baking electrode and seal guide sleeve 41
Include the nitrogen-sealed ring 44 set gradually from lower to upper, brass sealing ring 45.Seal guide sleeve 41 passes through insulating flange and cooperation
Bolt is connected with bell 1, and corundum seals the hole wall that 42 bottom of brick is set to bell 1, and corundum, which seals, has male part at the top of brick 42
Position, evagination position is assemblied between two pieces insulating flange, and ceramic fibre sealing ring 43 is assemblied in upper portion insulating flange bottom and just
Between jade sealing 42 top surface of brick.Brass sealing ring 45 is upper layer and lower layer；Brass sealing ring 45 leads to hold-down bolt 46 and cooperates spring 47
It is locked, spring 47 is sheathed on the threaded rod of hold-down bolt 46, and 47 end of spring is contacted with brass sealing ring 45, compresses spiral shell
Bolt 46 is threadedly coupled with seal guide sleeve 41.The sealing means are examined by practice principle, and sealing effect is fine.
As shown in fig. 6, the sealing structure of floss hole 5 is, water-cooled flue 51 is suspended in 1 top of bell, in 1 upper surface of bell
It is welded with cylinder 52, cylinder 52 and floss hole 5 are coaxially disposed, and region of 1 upper surface of bell in cylinder 52 is from lower to upper successively
It is provided with ceramic fiber blanket 53, annular brick 54, water-cooled flue 51 is mounted on annular 54 upper surface of brick, annular 54 upper surface of brick, cylinder
The region that 52 inner wall of body surrounds on the outside of water-cooled flue 51 is poured by lightening casting material.In the present embodiment, in cylinder 52
Wall and the spacing in 51 outside of water-cooled flue are 105mm, and the pottery of upper 40mm thickness, 100mm wide is first padded above the floss hole 5 of bell 1
Porcelain tapetum fibrosum 53, then installs the annular brick 54 of 65mm thickness on ceramic fiber blanket 53, then pours 120mm by lightening casting material
Thickness both ensure that insulation, vibration buffering in this way, and also ensure sealing performance.
As shown in fig. 7, being disposed with the pottery of backup lining brick 71, second from lower to upper the invention also includes furnace shell 7, in furnace shell 7
Porcelain tapetum fibrosum 72, bell 1 are mounted on 72 upper surface of the second ceramic fiber blanket, the annulus between 1 outside of bell and 7 inner wall of furnace shell
It is poured by lightening casting material.In the present embodiment, the annular gap of bell 1 and furnace shell 7 is about 45mm, in order to guarantee absolutely
Edge and closed using filling 100mm wide, the second ceramic fiber blanket 72 of 50mm thickness on backup lining brick 71, then uses lightening casting material
It is filled and pours annulus, the combination of the second ceramic fiber blanket 72 and lightening casting material not only ensure that sealing, but also ensure strong
Degree.
To make 1 mounting structure of bell reliable and stable, the bell 1 in the present invention is multiple equal on furnace shell 7 by being fixed on
Multiple hangings of the cantilever 8 and upper platform of even distribution are fixed on the top of furnace body.Cantilever 8 generally may be selected to be three, hanging
Quantity can then be selected by actual conditions, the hanging in the present embodiment be 15.
Claims (10)
1. self-baking electrode titanium slag smelting furnace full sealing apparatus, including bell (1), bell (1) are assembled by multiple bell units,
Be connected between two neighboring bell unit by flange (2) coordinated insulation bolt, be provided on bell (1) charging aperture (3), from
Baked electrode hole (4) and floss hole (5), charging aperture (3), self-baking electrode hole (4) and floss hole (5) are respectively arranged with sealing structure,
It is characterized by: two pieces flange is provided with mica insulation plate between (2) in connection structure between two neighboring bell unit
(6)。
2. self-baking electrode titanium slag smelting furnace full sealing apparatus as described in claim 1, it is characterised in that: charging aperture (3) it is close
Seal structure is to be welded with connecting cylinder (31) in bell (1) upper surface, and connecting cylinder (31) and charging aperture (3) are coaxially disposed, connecting cylinder
(31) top is fixedly installed connecting flange (32), and charging nozzle (33) is installed in charging aperture (3), the sky on the outside of charging nozzle (33)
Between knotting filling carried out by annular brick, ceramic fibre filler and lightening casting material, installation is had good positioning after charging nozzle (33), then according to
Secondary installation insulating flange, ceramic fibre sealing ring, supported flange (34), by insulated bolt by supported flange (34) and connection method
Blue (32) are connected and fixed.
3. self-baking electrode titanium slag smelting furnace full sealing apparatus as claimed in claim 2, it is characterised in that: to charging nozzle (33)
When the space of outer wall carries out knotting filling, bell (1) position and connecting cylinder (31) position are filled completely.
4. self-baking electrode titanium slag smelting furnace full sealing apparatus as described in claim 1, it is characterised in that: self-baking electrode hole (4)
Sealing structure be that self-baking electrode is installed in self-baking electrode hole (4) by seal guide sleeve (41), seal guide sleeve (41) with
Sealing structure between bell (1) includes corundum sealing brick (42), ceramic fibre sealing ring (43) set gradually from lower to upper,
Sealing structure between self-baking electrode and seal guide sleeve (41) includes the nitrogen-sealed ring (44) set gradually from lower to upper, Huang
Copper sealing ring (45).
5. self-baking electrode titanium slag smelting furnace full sealing apparatus as claimed in claim 4, it is characterised in that: seal guide sleeve (41)
It is connected by insulating flange with fitted bolt with bell (1), corundum seals the hole wall that brick (42) bottom is set to bell (1), just
There is evagination position, evagination position is assemblied between two pieces insulating flange, ceramic fibre sealing ring at the top of jade sealing brick (42)
(43) it is assemblied between upper portion insulating flange bottom and corundum sealing brick (42) top surface.
6. self-baking electrode titanium slag smelting furnace full sealing apparatus as claimed in claim 4, it is characterised in that: brass sealing ring (45)
For upper layer and lower layer；Brass sealing ring (45), which leads to hold-down bolt (46) cooperation spring (47), is locked, and spring (47) is sheathed on pressure
On the threaded rod of tight bolt (46), spring (47) end is contacted with brass sealing ring (45), and hold-down bolt (46) and sealing are oriented to
(41) are covered to be threadedly coupled.
7. self-baking electrode titanium slag smelting furnace full sealing apparatus as described in claim 1, it is characterised in that: floss hole (5) it is close
Seal structure is that water-cooled flue (51) is suspended in above bell (1), is welded with cylinder (52) in bell (1) upper surface, cylinder (52)
It is coaxially disposed with floss hole (5), region of bell (1) upper surface in cylinder (52) is disposed with ceramic fibre from lower to upper
Blanket (53), annular brick (54), water-cooled flue (51) are mounted on annular brick (54) upper surface, annular brick (54) upper surface, cylinder
(52) region that inner wall surrounds on the outside of water-cooled flue (51) is poured by lightening casting material.
8. self-baking electrode titanium slag smelting furnace full sealing apparatus as claimed in any of claims 1 to 7 in one of claims, it is characterised in that:
Further include furnace shell (7), is disposed with backup lining brick (71), the second ceramic fiber blanket (72), bell from lower to upper in furnace shell (7)
(1) it is mounted on the second ceramic fiber blanket (72) upper surface, is passed through gently on the outside of bell (1) the annulus between furnace shell (7) inner wall
Matter castable is poured.
9. self-baking electrode titanium slag smelting furnace full sealing apparatus as claimed in claim 8, it is characterised in that: bell (1) passes through solid
Multiple hangings of the multiple equally distributed cantilevers (8) and upper platform that are scheduled on furnace shell (7) are fixed on the top of furnace body.
10. self-baking electrode titanium slag smelting furnace full sealing apparatus as claimed in claim 9, it is characterised in that: cantilever (8) is three
It is a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910809494.0A CN110440594A (en) | 2019-08-29 | 2019-08-29 | Self-baking electrode titanium slag smelting furnace full sealing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910809494.0A CN110440594A (en) | 2019-08-29 | 2019-08-29 | Self-baking electrode titanium slag smelting furnace full sealing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110440594A true CN110440594A (en) | 2019-11-12 |
Family
ID=68438270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910809494.0A Pending CN110440594A (en) | 2019-08-29 | 2019-08-29 | Self-baking electrode titanium slag smelting furnace full sealing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110440594A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111595169A (en) * | 2020-05-27 | 2020-08-28 | 攀钢集团钛业有限责任公司 | Self-baking electrode titanium slag smelting furnace flue cleaning observation door structure |
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| CN201413037Y (en) * | 2009-04-13 | 2010-02-24 | 无锡四方电炉有限公司 | Water-cooled seal sleeve of calcium carbide furnace cover electrode |
| CN102498361A (en) * | 2009-08-04 | 2012-06-13 | 奥图泰有限公司 | Sealing device |
| CN103822497A (en) * | 2014-03-18 | 2014-05-28 | 大连华锐重工集团股份有限公司 | Rectangular hood suitable for multi-loop DC submerged arc furnace |
| CN206369469U (en) * | 2016-12-30 | 2017-08-01 | 辽宁久星钛业有限责任公司 | Closed titanium slag electric furnace water cooled cover |
| CN107976071A (en) * | 2017-12-20 | 2018-05-01 | 大连重工机电设备成套有限公司 | The compensation wide cloth ferro-alloy furnace blanking mouth of split |
| CN109883203A (en) * | 2019-03-28 | 2019-06-14 | 江苏德龙镍业有限公司 | Mineral hot furnace water cooled cover |
-
2019
- 2019-08-29 CN CN201910809494.0A patent/CN110440594A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201413037Y (en) * | 2009-04-13 | 2010-02-24 | 无锡四方电炉有限公司 | Water-cooled seal sleeve of calcium carbide furnace cover electrode |
| CN102498361A (en) * | 2009-08-04 | 2012-06-13 | 奥图泰有限公司 | Sealing device |
| CN103822497A (en) * | 2014-03-18 | 2014-05-28 | 大连华锐重工集团股份有限公司 | Rectangular hood suitable for multi-loop DC submerged arc furnace |
| CN206369469U (en) * | 2016-12-30 | 2017-08-01 | 辽宁久星钛业有限责任公司 | Closed titanium slag electric furnace water cooled cover |
| CN107976071A (en) * | 2017-12-20 | 2018-05-01 | 大连重工机电设备成套有限公司 | The compensation wide cloth ferro-alloy furnace blanking mouth of split |
| CN109883203A (en) * | 2019-03-28 | 2019-06-14 | 江苏德龙镍业有限公司 | Mineral hot furnace water cooled cover |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111595169A (en) * | 2020-05-27 | 2020-08-28 | 攀钢集团钛业有限责任公司 | Self-baking electrode titanium slag smelting furnace flue cleaning observation door structure |
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