CN201020527Y - Torpedo tank liner structure - Google Patents
Torpedo tank liner structure Download PDFInfo
- Publication number
- CN201020527Y CN201020527Y CNU2007200899427U CN200720089942U CN201020527Y CN 201020527 Y CN201020527 Y CN 201020527Y CN U2007200899427 U CNU2007200899427 U CN U2007200899427U CN 200720089942 U CN200720089942 U CN 200720089942U CN 201020527 Y CN201020527 Y CN 201020527Y
- Authority
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- China
- Prior art keywords
- section
- brick
- inside lining
- torpedo
- cylindrical shell
- 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
Links
- 239000011449 brick Substances 0.000 claims abstract description 134
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052742 iron Inorganic materials 0.000 claims abstract description 36
- 239000004575 stone Substances 0.000 claims description 38
- 241000237942 Conidae Species 0.000 claims description 26
- 241000826860 Trapezium Species 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- -1 broke bits Substances 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 239000004927 clay Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009851 ferrous metallurgy Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model relates to a torpedo tank lining structure, comprising a tank shell; wherein, the inner shell wall is masoned with a firebrick working layer, and a permanent light-weight refractory layer is arranged between the inner wall of the shell and the firebrick working layer; the firebrick working layer comprises a cylindrical shell lining masonry section, a truncated cone lining section and an end wall lining masonry section; wherein, the part of the cylindrical shell lining masonry section justly below the tank mouth is a molten iron impact section, the sector central angle of which is 120 to 150 degrees; the permanent thickness between the cylindrical shell lining masonry section and the cylindrical shell is greater than the permanent thickness between the truncated conical shell lining masonry section and the truncated conical shell; at least a ring connecting masonry layer is arranged between the cylindrical shell lining masonry section and the truncated conical shell lining masonry section. The torpedo tank lining structure of the utility model adopts the least brick types as much as possible, is convenient for brick matching and masonry, effectively avoids the phenomena such as swap brick, broke bits, iron sticking, etc., can save material, makes the brick structure simple, reduces masonry difficulty, and is very conducive for promoting implementation.
Description
One, technical field:
The utility model relates to the torpedo tank car that a kind of Ferrous Metallurgy field shipment molten iron is used, particularly a kind of torpedo tank lining structure therewith.
Two, background technology:
The torpedo jar is that the Ferrous Metallurgy casting field is used to load and transport blast-melted a kind of device, tank body is combined with the symmetrical truncated cone shell section that is connected in two ends and the sealing cambered surface section of each truncated cone shell section end by the cylindrical shell section of centre, profile is similar to torpedo, so be called the torpedo jar.Torpedo tank car just is employed in the industrial country of prosperities such as Europe, the United States, day in early days, and along with the continuous development of the big-and-middle-sized iron and steel enterprise of China, the torpedo jar is progressively applied in recent years.Torpedo jar madial wall must be built by laying bricks or stones to play insulation and to prevent that high-temperature molten metal or slag from corroding tank body with torpedo jar special brick.
Yet the employed refractory brick of present torpedo jar working lining both domestic and external is of a great variety, generally all at 15～30 kinds, in addition more, and brick type complexity, build by laying bricks or stones very difficult.
Three, utility model content:
The utility model is to overcome the deficiency that prior art exists, and designs and produce a kind of torpedo tank lining structure therewith.
Technical scheme:
A kind of torpedo tank lining structure therewith contains the tank body shell, and this tank body shell is combined with the symmetrical truncated cone shell section that is connected in two ends and the sealing cambered surface section of each truncated cone shell section end by the cylindrical shell section of centre; In the middle of described cylindrical shell section side, be provided with a jar mouth; The madial wall of combination shell has been built refractory brick work layer by laying bricks or stones, the permanent layer that sprays for lightweight refracrory between combination shell madial wall and the refractory brick work layer; Described refractory brick work layer contains cylindrical shell inside lining building section, truncated cone shell inside lining building section and headwall inside lining building section; Wherein the part of cylindrical shell inside lining building section under the jar mouth is the molten iron impact zone, be different from other cylindrical shell inside lining building sections, truncated cone shell inside lining building section and the headwall inside lining building Duan Weifei molten iron impact zone of molten iron impact zone, the fan-shaped cambered surface central angle number of degrees of molten iron impact zone are 120 °～150 °; Permanent coating thickness between described cylindrical shell inside lining building section and the cylindrical shell is greater than permanent layer thickness between truncated cone shell inside lining building section and the truncated cone housing; Between cylindrical shell inside lining building section and truncated cone shell inside lining building section, be provided with an annular connection at least and build layer by laying bricks or stones.
Described molten iron impact zone is built by laying bricks or stones by torpedo jar special brick first and is formed, and a radial section of this brick is an isosceles trapezoid, and another radial section is a rectangle; The non-molten iron impact zone of described cylindrical shell liner section is that torpedo jar special brick second is built by laying bricks or stones and formed, and a radial section of this brick is an isosceles trapezoid, and another radial section is a rectangle; The torpedo jar brick first height that the molten iron impact zone is built by laying bricks or stones is greater than the height of the non-molten iron impact zone torpedo jar brick second of cylindrical shell inside lining building layer.
Described truncated cone shell inside lining building section is built by laying bricks or stones by torpedo jar special brick third and is formed, and a radial section of this brick is an isosceles trapezoid, and another radial section is a parallelogram.
Described annular connects builds layer by laying bricks or stones and is built by torpedo jar special brick header and form, and a radial section of this brick is an isosceles trapezoid, and another radial section is a right-angled trapezium.
Described headwall inside lining building section is built by laying bricks or stones by torpedo jar special brick penta and is formed, and this brick is a cuboid.
The cambered surface central angle number of degrees of molten iron impact zone are 130 °～140 °.
Described torpedo tank lining structure therewith, the composition material of the permanent layer of described lightweight refracrory spraying is flint clay 3～0mm 20～40%, alumina 3～0mm 25～45% ,-200 orders 20～40%, bonding clay 2～10%.
The non-molten iron impact zone of described torpedo jar refers to that mainly the non-molten iron impact zone of cylindrical shell inside lining building section, annular connect inside lining building section, truncated cone shell inside lining building section and headwall inside lining building section.
The beneficial effects of the utility model:
1, torpedo tank lining structure therewith of the present utility model adopts minimum brick type as far as possible, conveniently joins brick and builds by laying bricks or stones, reduces brickwork joint simultaneously, effectively avoids phenomenons such as brick, dross, sticking iron.
2, torpedo tank lining structure therewith of the present utility model, prolong service life, and repairing and replacement are more prone to, and suitably reduce molten iron erosional layer area, economize on material.
3, torpedo tank lining structure therewith of the present utility model, brick type structure becomes simply, builds difficulty by laying bricks or stones and reduces, and has also reduced cost, is beneficial to very much promotion and implementation.
Four, description of drawings:
Fig. 1 is one of torpedo tank liner cross-sectional view;
Fig. 2 is the A-A cross-sectional view of Fig. 1;
Fig. 3 is the B-B cross-sectional view of Fig. 1;
Fig. 4 is the C-C cross-sectional view of Fig. 1;
Fig. 5-1 faces structural representation for torpedo jar special brick penta;
Fig. 5-2 is torpedo jar special brick penta a left TV structure schematic diagram;
Fig. 6-1 faces structural representation for torpedo jar special brick first;
Fig. 6-2 is a torpedo jar special brick first left side TV structure schematic diagram;
Fig. 7-1 faces structural representation for torpedo jar special brick second;
Fig. 7-2 is a torpedo jar special brick second left side TV structure schematic diagram;
Fig. 8-1 faces structural representation for torpedo jar special brick third (1);
Fig. 8-2 is torpedo jar special brick third (1) the left TV structure schematic diagram;
Fig. 8-3 faces structural representation for torpedo jar special brick third (2);
Fig. 8-4 is torpedo jar special brick third (2) the left TV structure schematic diagram;
Fig. 8-5 faces structural representation for torpedo jar special brick third (3);
Fig. 8-6 is torpedo jar special brick third (3) the left TV structure schematic diagram;
Fig. 9-1 faces structural representation for torpedo jar special brick fourth (1);
Fig. 9-2 is the left TV structure schematic diagram of torpedo jar special brick fourth (1);
Fig. 9-3 faces structural representation for torpedo jar special brick fourth (2);
Fig. 9-4 is the left TV structure schematic diagram of torpedo jar special brick fourth (2);
Fig. 9-5 faces structural representation for torpedo jar special brick fourth (3);
Fig. 9-6 is the left TV structure schematic diagram of torpedo jar special brick fourth (3);
Figure 10 is two of a torpedo tank liner cross-sectional view.
Five, specific embodiments:
Embodiment one: referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, a kind of torpedo tank lining structure therewith, contain tank body shell 7, this tank body shell 7 is combined with the symmetrical truncated cone shell section that is connected in two ends and the sealing cambered surface section of each truncated cone shell section end by the cylindrical shell section of centre; In the middle of described cylindrical shell section side, be provided with a jar mouth 8; The madial wall of combination shell 7 has been built refractory brick work layer by laying bricks or stones, waters material feeding permanent layer 6 for what lightweight refracrory sprayed between combination shell 7 madial walls and the refractory brick work layer; Described refractory brick work layer contains cylindrical shell inside lining building section, truncated cone shell inside lining building section and headwall inside lining building section.
The part of described cylindrical shell inside lining building section under the jar mouth is molten iron impact zone 1, and this layer is built by laying bricks or stones by torpedo jar special brick first and formed, and a longitudinal cross-section of this brick is an isosceles trapezoid, and another longitudinal cross-section is rectangle (shown in Fig. 6-1 and Fig. 6-2); Other cylindrical shell inside lining building sections 2, truncated cone shell inside lining building section and the headwall inside lining building section 5 that are different from the molten iron impact zone constitute non-molten iron impact zone, wherein the non-impact zone 2 of cylindrical shell inside lining building section is built by laying bricks or stones for torpedo jar special brick second and is formed, a longitudinal cross-section of this brick is an isosceles trapezoid, and another longitudinal cross-section is rectangle (shown in Fig. 7-1 and Fig. 7-2); The torpedo jar brick first of molten iron impact zone 1 is higher than the torpedo jar brick second of non-molten iron impact zone 2; The fan-shaped cambered surface central angle number of degrees of molten iron impact zone 1 are 135 °.
Between cylindrical shell inside lining building section and truncated cone shell inside lining building section, be provided with an annular at least and connect the section of building by laying bricks or stones, building layer 41,42, the 43 composition annular section of building by laying bricks or stones by laying bricks or stones with three annular connections in the present embodiment is example, this annular connects the section of building by laying bricks or stones and builds a layer header by laying bricks or stones by torpedo jar special brick and build and form, a longitudinal cross-section of this brick is an isosceles trapezoid, another longitudinal cross-section be right-angled trapezium (shown in Fig. 8-1, Fig. 8-2, Fig. 8-3, Fig. 8-4, Fig. 8-5 and Fig. 8-6, α among the figure
1＞α
2＞α
3), brick layer 41 is positioned at truncated cone inside lining building Duan Daduan, and brick layer 42 is positioned in the middle of the truncated cone inside lining building section, and brick layer 43 is positioned at truncated cone inside lining building section small end.
Described truncated cone shell inside lining building section is built by laying bricks or stones by torpedo jar special brick third and is formed, and a longitudinal cross-section of this brick is an isosceles trapezoid, and another longitudinal cross-section is a parallelogram; Every ring torpedo jar special brick third of this truncated cone shell section of building by laying bricks or stones, the height ratio of going to the bottom on the longitudinal section of its isosceles trapezoid is same to each other or different to each other, the present embodiment kind with three kinds of brick layers 31,32,33 be example (shown in Fig. 9-1, Fig. 9-2, Fig. 9-3, Fig. 9-4, Fig. 9-5 and Fig. 9-6, β among the figure
1＞β
2＞β
3), brick layer 31 is positioned at big mouthful of section of truncated cone inside lining building section, and brick layer 32 is positioned at truncated cone inside lining building section stage casing, and brick layer 33 is positioned at truncated cone inside lining building section osculum section.
Described headwall inside lining building section 5 is built by laying bricks or stones by torpedo jar special brick penta and is formed, and this brick is cuboid (shown in Fig. 5-1 and Fig. 5-2).
Permanent coating thickness between described cylindrical shell inside lining building section and the cylindrical shell is greater than permanent layer thickness between truncated cone shell inside lining building section and the truncated cone housing;
The composition material of the permanent layer 6 of described lightweight refracrory spraying is flint clay 3～0mm 20～40%, alumina 3～0mm 25～45% ,-200 orders 20～40%, bonding clay 2～10%, bond 2～6%.
The composition material that waters material feeding and mud is a high alumina matter, and the compositing formula of this high alumina matter is alumina 10～5mm20～45%, alumina 5～3mm 5～25%, alumina 3～0mm 5～25%-200 order 10～25%, silicon ash 1～5%, alumina cement 2～15%.
With certain torpedo jar is example, and the cylindrical shell segment length is 3810mm, and diameter is 3560mm; Truncated cone shell height is 2250mm, and a big mouthful diameter is 3560mm, and the osculum diameter is 2002mm; A jar mouthful external diameter is 2050mm, and a jar mouthful internal diameter is 1100mm; The impact zone longitudinal length is 1800mm; The fan-shaped cambered surface central angle number of degrees of molten iron impact zone are 135 °.
A longitudinal section of torpedo jar special brick first is a rectangle, and this rectangle height is 325mm, and wide is 198mm, and another longitudinal section is an isosceles trapezoid, and the trapezoidal height of these isosceles is 325mm, on the length of going to the bottom be respectively 62mm and 79mm; A longitudinal section of torpedo jar special brick second is a rectangle, and this rectangle height is 280mm, and wide is 199mm, and another longitudinal section is an isosceles trapezoid, and the trapezoidal height of these isosceles is 280mm, on the length of going to the bottom be respectively 65mm and 79mm; A longitudinal section of torpedo jar special brick third (1) is a right-angled trapezium, and the right angle waist of this right-angled trapezium is long to be 108mm, on the length of going to the bottom be respectively 319mm and 349mm, another longitudinal section is an isosceles trapezoid, the trapezoidal upper base of these isosceles is long to be 115mm, the longest 147mm that is that goes to the bottom, and height is up to 349mm; A longitudinal section of torpedo jar special brick third (2) is a right-angled trapezium, and the right angle waist of this right-angled trapezium is long to be 108mm, on the length of going to the bottom be respectively 289mm and 319mm, another longitudinal section is an isosceles trapezoid, the trapezoidal upper base of these isosceles is long to be 115mm, the longest 144.2mm that is that goes to the bottom, and height is up to 319mm; A longitudinal section of torpedo jar special brick third (3) is a right-angled trapezium, and the right angle waist of this right-angled trapezium is long to be 108mm, on the length of going to the bottom be respectively 259mm and 289mm, another longitudinal section is an isosceles trapezoid, the trapezoidal upper base of these isosceles is long to be 115mm, the longest 141.5mm that is that goes to the bottom, and height is up to 289mm; A longitudinal section of torpedo jar special brick fourth (1) is a parallelogram, and the longer sides of this right-angled trapezium is 258mm, highly is 88mm, another longitudinal section is an isosceles trapezoid, the shortest length of the trapezoidal upper base of these isosceles is 122.8mm, the longest 150mm that is that goes to the bottom, and height is up to 281.2mm; A longitudinal section of torpedo jar special brick fourth (2) is a parallelogram, and the longer sides of this right-angled trapezium is 258mm, highly is 88mm, another longitudinal section is an isosceles trapezoid, the shortest length of the trapezoidal upper base of these isosceles is 116.7mm, the longest 150mm that is that goes to the bottom, and height is up to 281.2mm; A longitudinal section of torpedo jar special brick fourth (3) is a parallelogram, and the longer sides of this right-angled trapezium is 258mm, highly is 88mm, another longitudinal section is an isosceles trapezoid, the shortest length of the trapezoidal upper base of these isosceles is 107.1mm, the longest 150mm that is that goes to the bottom, and height is up to 281.2mm.Torpedo jar special brick penta is a cuboid, and long is 150mm, and wide is 85mm, and height is 234mm.
Specifically be with the brick situation:
| Figure number | Brick type title (unit brick) | Build the position by laying bricks or stones | Build quantity (piece) by laying bricks or stones | Weight (kilogram) | |
| The unit brick is heavy | |
||||
| 1 | First | The molten iron impact zone of cylindrical shell inside lining building section | 428 | 13.2 | 5650 |
| 2 | Second | The non-molten iron impact zone of cylindrical shell inside lining building section | 1612 | 11.6 | 18699 |
| 31 | Third (1) | Big mouthful of section of truncated cone inside lining building section | 136 | 9.1 | 8281 |
| 32 | Third (2) | Truncated cone inside lining building section stage casing | 136 | 8.8 | 10824 |
| 33 | Third (3) | Truncated cone inside lining building section osculum section | 136 | 8.5 | 4048 |
| 41 | Fourth (1) | Annular connects the big end of the section of building by laying bricks or stones | 910 | 13.6 | 1850 |
| 42 | Fourth (2) | Annular connects the centre of the section of building by laying bricks or stones | 1230 | 12.3 | 1673 |
| 43 | Fourth (3) | Annular connects the small end of the section of building by laying bricks or stones | 480 | 11.0 | 1496 |
| 5 | Penta | The headwall section of building by laying bricks or stones | 440 | 8.7 | 3828 |
| Add up to | 5508 | 54151 | |||
All brickwork joints of above torpedo jar example are 2mm, theoretical displacement 36.9m
2, can adorn 252.63 tons of molten iron.
Embodiment two: referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, number identical with embodiment one, meaning is identical, does not repeat, and different is: built one deck end liner brick 9 by laying bricks or stones between the permanent layer 6 of cylindrical shell inside lining building section and lightweight refracrory spraying.
Claims (6)
1. a torpedo tank lining structure therewith contains the tank body shell, and this tank body shell is combined with the symmetrical truncated cone shell section that is connected in two ends and the sealing cambered surface section of each truncated cone shell section end by the cylindrical shell section of centre; In the middle of described cylindrical shell section side, be provided with a jar mouth; The madial wall of combination shell has been built refractory brick work layer by laying bricks or stones, the permanent layer that sprays for lightweight refracrory between combination shell madial wall and the refractory brick work layer; Described refractory brick work layer contains cylindrical shell inside lining building section, truncated cone shell inside lining building section and headwall inside lining building section; Wherein the part of cylindrical shell inside lining building section under the jar mouth is the molten iron impact zone, be different from other cylindrical shell inside lining building sections, truncated cone shell inside lining building section and the headwall inside lining building Duan Weifei molten iron impact zone of molten iron impact zone, it is characterized in that: the fan-shaped cambered surface central angle number of degrees of molten iron impact zone are 120 °～150 °; Permanent coating thickness between described cylindrical shell inside lining building section and the cylindrical shell is greater than permanent layer thickness between truncated cone shell inside lining building section and the truncated cone housing; Between cylindrical shell inside lining building section and truncated cone shell inside lining building section, be provided with an annular connection at least and build layer by laying bricks or stones.
2. torpedo tank lining structure therewith according to claim 1 is characterized in that: described molten iron impact zone is built by laying bricks or stones by torpedo jar special brick first and is formed, and a radial section of this brick is an isosceles trapezoid, and another radial section is a rectangle; The non-molten iron impact zone of described cylindrical shell liner section is that torpedo jar special brick second is built by laying bricks or stones and formed, and a radial section of this brick is an isosceles trapezoid, and another radial section is a rectangle; The torpedo jar brick first height that the molten iron impact zone is built by laying bricks or stones is greater than the height of the non-molten iron impact zone torpedo jar brick second of cylindrical shell inside lining building layer.
3. torpedo tank lining structure therewith according to claim 1 is characterized in that: described truncated cone shell inside lining building section is built by laying bricks or stones by torpedo jar special brick third and is formed, and a radial section of this brick is an isosceles trapezoid, and another radial section is a parallelogram.
4. torpedo tank lining structure therewith according to claim 1 is characterized in that: described annular connects builds layer by laying bricks or stones and is built by torpedo jar special brick header and form, and a radial section of this brick is an isosceles trapezoid, and another radial section is a right-angled trapezium.
5. torpedo tank lining structure therewith according to claim 1 is characterized in that: described headwall inside lining building section is built by laying bricks or stones by torpedo jar special brick penta and is formed, and this brick is a cuboid.
6. torpedo tank lining structure therewith according to claim 1 is characterized in that: the cambered surface central angle number of degrees of molten iron impact zone are 130 °～140 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200899427U CN201020527Y (en) | 2007-04-09 | 2007-04-09 | Torpedo tank liner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200899427U CN201020527Y (en) | 2007-04-09 | 2007-04-09 | Torpedo tank liner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201020527Y true CN201020527Y (en) | 2008-02-13 |
Family
ID=39087934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200899427U Expired - Lifetime CN201020527Y (en) | 2007-04-09 | 2007-04-09 | Torpedo tank liner structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201020527Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825247A (en) * | 2012-08-15 | 2012-12-19 | 济钢集团有限公司 | Opening of torpedo type molten iron ladle |
| CN112589087A (en) * | 2020-12-28 | 2021-04-02 | 巩义市第五耐火材料有限公司 | Construction method of torpedo tank |
-
2007
- 2007-04-09 CN CNU2007200899427U patent/CN201020527Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825247A (en) * | 2012-08-15 | 2012-12-19 | 济钢集团有限公司 | Opening of torpedo type molten iron ladle |
| CN112589087A (en) * | 2020-12-28 | 2021-04-02 | 巩义市第五耐火材料有限公司 | Construction method of torpedo tank |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070409 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |