CN102554201A - Large steel ladle and manufacturing method for same - Google Patents
Large steel ladle and manufacturing method for same Download PDFInfo
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- CN102554201A CN102554201A CN2012100226051A CN201210022605A CN102554201A CN 102554201 A CN102554201 A CN 102554201A CN 2012100226051 A CN2012100226051 A CN 2012100226051A CN 201210022605 A CN201210022605 A CN 201210022605A CN 102554201 A CN102554201 A CN 102554201A
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Abstract
The invention discloses a large steel ladle, which comprises a ladle body with a top opening. An air brick and a tapping nozzle are arranged at the bottom of the ladle body, the ladle body sequentially comprises a steel shell, a permanent layer and a lining layer from outside to inside, the permanent layer is cast with aluminum-magnesium casting materials, the lower half portions of the bottom surface and the lateral surface of the lining layer are cast with corundum spinel casting materials, the upper half portion of the lateral surface of the lining layer is built with magnesia carbon bricks or built with mixed magnesia carbon bricks and carbon-free precast blocks, and a seal is arranged at the top of the lining layer. The manufacturing method for the large steel ladle includes the steps: 1 casting the permanent layer; 2 manufacturing the lining layer; 3 baking; and 4 mounting the air brick and arranging the tapping nozzle at the bottom of the ladle body. The large steel ladle has the advantages that (1) the lining layer is high in strength and resistant to corrosion of molten steel, so that the service cycle of the lining layer is longer than original service cycle and frequent repair for the lining layer is omitted, and (2) when the lining layer is repaired, material consumption is low, construction efficiency is high, labor intensity is low, and manpower and material resources are saved.
Description
Technical field
The present invention relates to a kind of ladle, particularly a kind of large-scale ladle and manufacturing approach thereof.
Background technology
At present, existing large-scale ladle more than 120 tons, as shown in Figure 1, its indentured permanent layer that generally includes the outside; Form with inner liner, inner liner adopts magnesia carbon brick to build by laying bricks or stones or carbon-free prefabricated section mixes the mode of building by laying bricks or stones with magnesia carbon brick, need often repair and change indentured liner; Waste time and energy, refractory consumption rate amounts such as magnesia carbon brick and carbon-free prefabricated section are big simultaneously, and maintenance cost is high; In addition, because repairing or replacing time are long, also can influence the cycle of operation of ladle.
Summary of the invention
The problem that the present invention will solve is: a kind of simple in structure, large-scale ladle and manufacturing approach thereof of being convenient to safeguard and reduce the refractory consumption rate amount is provided.
In order to solve the problems of the technologies described above; Large-scale ladle of the present invention; Comprise open-topped indentured; Said indentured bottom is provided with the air brick and the tapping mouth of a river, and said indentured from inwardly comprising box hat outward successively, forming permanent layer and inner liner by the alumina-magnesia castable cast, the bottom surface of said inner liner and the Lower Half of side are poured into a mould for the corundum spinelle pours and formed; The first half of said inner liner side is that magnesia carbon brick is built by laying bricks or stones to form or mixed to build by laying bricks or stones with carbon-free prefabricated section by magnesia carbon brick and formed, and the top of said inner liner is provided with seals.
The manufacturing approach of large-scale ladle of the present invention comprises following concrete steps:
The first step, cast permanent layer: place air brick model and tapping mouth of a river model at ladle bottom earlier, pour into a mould the bottom permanent layer with the mixture of alumina-magnesia castable and water; Maintenance under the natural conditions; After pours reaches demoulding strength, propose this model, then indentured permanent layer bag tire is placed in the box hat; Be provided with the gap between permanent layer bag tire and the box hat; Pour into the mixture of alumina-magnesia castable and water in the gap between permanent layer and the box hat then and be full of the gap, maintenance under field conditions (factors), pours is taken out permanent layer bag tire after reaching demoulding strength;
In second step, make inner liner: place air brick model and tapping mouth of a river model at ladle bottom earlier, pour into a mould the bottom inner liner with the mixture of corundum spinelle pours and water; Maintenance under the natural conditions after pours reaches demoulding strength, proposes this model; In permanent layer, place a liner bag tire; Be provided with the gap between liner bag tire and the permanent layer, pour into the compound of corundum spinelle pours and water in the gap then and be full of the gap, form the Lower Half of inner liner side; Mix the first half of building the inner liner side by laying bricks or stones with magnesia carbon brick or magnesia carbon brick with carbon-free prefabricated section again, seal with sealing the pours cast at last;
The 3rd step; Baking: maintenance under the natural conditions; Pours reaches takes out liner bag tire behind the demoulding strength, adopts coal gas to do fuel then inner liner is toasted, and at first toasts 20～48 hours with 90-120 ℃ little fire; With 550-650 ℃ moderate heat baking 30～48 hours, toasted 36～48 hours with 750-850 ℃ big fire at last then;
In the 4th step, air brick is installed and is set out the molten steel mouth in indentured bottom.
The manufacturing approach of large-scale ladle of the present invention, the percentage by weight of corundum spinelle pours is 85-97% in the compound of said corundum spinelle pours and water; The percentage by weight of water is 3-15%.
The manufacturing approach of large-scale ladle of the present invention, the gap between said liner bag tire and the permanent layer is 60-300mm.
The beneficial effect that the present invention obtains is: (1) inner liner intensity is high, and anti-molten steel corrodes, so life cycle is longer than originally, does not need frequently to repair liner; When (2) repairing inner liner, behind the good surperficial slag of cleaning, directly put into liner bag tire; Cover waters one deck corundum spinel pours on original inner liner, can come into operation after the baking, and this masonry way material consumption is few; Efficiency of construction is than higher, and labour intensity is low, uses manpower and material resources sparingly.
Description of drawings
Fig. 1 is the structural representation of existing large-scale ladle.
Fig. 2 is the structural representation of large-scale ladle of the present invention.
Among the figure: 1, permanent layer, 2, air brick, 3, the tapping mouth of a river, 4, magnesia carbon brick, 5, box hat, 6, the corundum spinelle pours.
The specific embodiment
Embodiment 1
As shown in Figure 2; The large-scale ladle of present embodiment comprises open-topped indenturedly, and said indentured bottom is provided with the air brick 2 and the tapping mouth of a river 3; Said indentured from inwardly comprising box hat 5 outward successively, forming permanent layer 1 and inner liner by the alumina-magnesia castable cast; The bottom surface of said inner liner and the Lower Half of side are that corundum spinelle pours 7 cast forms, and the first half of said inner liner side is that magnesia carbon brick 4 is built by laying bricks or stones and formed, and the top of said inner liner is provided with seals 6.
The large-scale ladle of present embodiment in the time of concrete the manufacturing, comprises the steps:
The first step, cast permanent layer: place air brick model and tapping mouth of a river model at ladle bottom earlier, pour into a mould the bottom permanent layer with the mixture of alumina-magnesia castable and water; Maintenance under the natural conditions; After pours reaches demoulding strength, propose this model, then indentured permanent layer bag tire is placed in the box hat; Be provided with the gap between permanent layer bag tire and the box hat; Pour into the mixture of alumina-magnesia castable and water in the gap between permanent layer and the box hat then and be full of the gap, maintenance under field conditions (factors), pours is taken out permanent layer bag tire after reaching demoulding strength;
In second step, make inner liner: place air brick model and tapping mouth of a river model at ladle bottom earlier, pour into a mould the bottom inner liner with the mixture of corundum spinelle pours and water; Maintenance under the natural conditions after pours reaches demoulding strength, proposes this model; In permanent layer, place a liner bag tire; Be provided with the gap between liner bag tire and the permanent layer, pour into the compound of corundum spinelle pours and water in the gap then and be full of the gap, form the Lower Half of inner liner side; Mix the first half of building the inner liner side by laying bricks or stones with magnesia carbon brick or magnesia carbon brick with carbon-free prefabricated section again, seal with sealing the pours cast at last;
The 3rd step; Baking: maintenance under the natural conditions, after pours reaches demoulding strength, take out liner bag tire; Adopting coal gas to do fuel then toasts inner liner; At first with 110 ℃ little fire baking 20～48 hours, with 600 ℃ moderate heat baking 30～48 hours, toasted 36～48 hours with 800 ℃ big fire at last then;
In the 4th step, air brick is installed and is set out the molten steel mouth in indentured bottom.
The manufacturing approach of large-scale ladle of the present invention, the percentage by weight of corundum spinelle pours is 95% in the compound of said corundum spinelle pours and water; The percentage by weight of water is 5%.
The manufacturing approach of large-scale ladle of the present invention, the gap between said liner bag tire and the permanent layer is 250mm.
Large-scale ladle of the present invention is compared with existing large-scale ladle in the concrete process of using, and has following advantage:
(1) the inner liner security performance obviously gets a promotion, and the infiltration of invar water can not occur and cause the situation generation that involucrum is rubescent even wear bag.
(2) reduced the workload of building and repairing, operating efficiency is improved significantly, and reduces and builds by laying 2 hours time; Labour intensity is also reduced significantly simultaneously, reduces number of work 2 people.
(3) greatly reduce ladle liner layer pours, i.e. the consumption of corundum spinelle pours, one takes turns repairing can reduce pours and consume the 4-8 ton, greatly reduces production cost.
(4) significantly promote the service life of large-scale ladle, improve the ladle cycle of operation.
The large-scale ladle of present embodiment, the first half of inner liner side are mixed to build by laying bricks or stones with carbon-free prefabricated section by magnesia carbon brick 4 and form, and other structure is identical with embodiment 1 with manufacturing approach.
Claims (4)
1. large-scale ladle; Comprise open-topped indentured; Said indentured bottom is provided with the air brick (2) and the tapping mouth of a river (3); It is characterized in that: said indentured from inwardly comprising box hat (5) outward successively, forming permanent layer (1) and inner liner by the alumina-magnesia castable cast; The bottom surface of said inner liner and the Lower Half of side are that corundum spinelle pours (7) cast forms, and the first half of said inner liner side is that magnesia carbon brick (4) is built by laying bricks or stones to form or mixed to build by laying bricks or stones with carbon-free prefabricated section by magnesia carbon brick (4) and formed, and the top of said inner liner is provided with seals (6).
2. the manufacturing approach of a large-scale ladle is characterized in that, comprises following concrete steps:
1) cast permanent layer: place air brick model and tapping mouth of a river model at ladle bottom earlier; Pour into a mould the bottom permanent layer with the mixture of alumina-magnesia castable and water, maintenance under the natural conditions is after pours reaches demoulding strength; This model is proposed; Then indentured permanent layer bag tire is placed in the box hat, is provided with the gap between permanent layer bag tire and the box hat, pour into the mixture of alumina-magnesia castable and water in the gap between permanent layer and the box hat then and be full of the gap; Maintenance under field conditions (factors), pours are taken out permanent layer bag tire after reaching demoulding strength;
2) make inner liner: place air brick model and tapping mouth of a river model at ladle bottom earlier; Pour into a mould the bottom inner liner with the mixture of corundum spinelle pours and water, maintenance under the natural conditions, pours proposes this model after reaching demoulding strength; In permanent layer, place a liner bag tire; Be provided with the gap between liner bag tire and the permanent layer, pour into the compound of corundum spinelle pours and water in the gap then and be full of the gap, form the Lower Half of inner liner side; Mix the first half of building the inner liner side by laying bricks or stones with magnesia carbon brick or magnesia carbon brick with carbon-free prefabricated section again, seal with sealing the pours cast at last;
3) maintenance under field conditions (factors); Pours is taken out liner bag tire after reaching demoulding strength; Adopting coal gas to do fuel then toasts inner liner; At first with 90-120 ℃ little fire baking 20～48 hours, with 550-650 ℃ moderate heat baking 30～48 hours, toasted 36～48 hours with 750-850 ℃ big fire at last then;
4) air brick is installed and is set out the molten steel mouth in indentured bottom.
3. the manufacturing approach of large-scale ladle according to claim 2 is characterized in that, the percentage by weight of corundum spinelle pours is 85-97% in the compound of said corundum spinelle pours and water; The percentage by weight of water is 3-15%.
4. the manufacturing approach of large-scale ladle according to claim 2 is characterized in that, the gap between said liner bag tire and the permanent layer is 60-300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100226051A CN102554201A (en) | 2012-01-05 | 2012-01-05 | Large steel ladle and manufacturing method for same |
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| CN2012100226051A CN102554201A (en) | 2012-01-05 | 2012-01-05 | Large steel ladle and manufacturing method for same |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836993A (en) * | 2012-09-06 | 2012-12-26 | 上海宝明耐火材料有限公司 | Penetration preventing steel ladle |
| CN103551555A (en) * | 2013-11-12 | 2014-02-05 | 武汉钢铁(集团)公司 | Roasting method for permanent layer of steel-making tundish after overhauling |
| CN104057261A (en) * | 2014-06-30 | 2014-09-24 | 广东韶钢工程技术有限公司 | 120-ton steel ladle manufacturing process |
| CN104858409A (en) * | 2015-05-15 | 2015-08-26 | 武汉威林科技股份有限公司 | Steel ladle for steelmaking |
| CN105414538A (en) * | 2015-12-31 | 2016-03-23 | 保定安保能冶金设备有限公司 | Liquid aluminum tundish |
| CN105458238A (en) * | 2016-01-07 | 2016-04-06 | 保定安保能冶金设备有限公司 | Molten aluminum tundish |
| CN105618725A (en) * | 2016-02-22 | 2016-06-01 | 宁夏朗盛精密制造技术有限公司 | Compositely-bricked small-medium-sized steel ladle work lining |
| CN108746574A (en) * | 2018-07-25 | 2018-11-06 | 青岛万恒达机械设备有限公司 | A kind of ladle baking method |
| CN110722143A (en) * | 2019-11-18 | 2020-01-24 | 安徽省萧县华龙耐火材料有限责任公司 | Method for improving continuous casting efficiency of tundish |
| CN115555554A (en) * | 2022-11-04 | 2023-01-03 | 南京钢铁股份有限公司 | Steel ladle bottom seepage-proofing steel pouring method |
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| CN1371773A (en) * | 2001-02-28 | 2002-10-02 | 杭州钢铁集团公司 | Integral steel ladle liner repairing technology |
| CN2818014Y (en) * | 2005-08-24 | 2006-09-20 | 崔东瑞 | Structure of steel ladle inner lining |
| JP2009297766A (en) * | 2008-06-16 | 2009-12-24 | Kobe Steel Ltd | Upper part structure of ladle, and method for lining refractory material on upper part structure of ladle |
| CN102019417A (en) * | 2010-11-17 | 2011-04-20 | 莱芜钢铁股份有限公司 | Method for building steel ladle pouring working lining |
| CN102211180A (en) * | 2011-05-31 | 2011-10-12 | 莱芜钢铁集团有限公司 | Steel ladle |
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2012
- 2012-01-05 CN CN2012100226051A patent/CN102554201A/en active Pending
Patent Citations (5)
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| CN1371773A (en) * | 2001-02-28 | 2002-10-02 | 杭州钢铁集团公司 | Integral steel ladle liner repairing technology |
| CN2818014Y (en) * | 2005-08-24 | 2006-09-20 | 崔东瑞 | Structure of steel ladle inner lining |
| JP2009297766A (en) * | 2008-06-16 | 2009-12-24 | Kobe Steel Ltd | Upper part structure of ladle, and method for lining refractory material on upper part structure of ladle |
| CN102019417A (en) * | 2010-11-17 | 2011-04-20 | 莱芜钢铁股份有限公司 | Method for building steel ladle pouring working lining |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836993A (en) * | 2012-09-06 | 2012-12-26 | 上海宝明耐火材料有限公司 | Penetration preventing steel ladle |
| CN103551555A (en) * | 2013-11-12 | 2014-02-05 | 武汉钢铁(集团)公司 | Roasting method for permanent layer of steel-making tundish after overhauling |
| CN103551555B (en) * | 2013-11-12 | 2015-09-23 | 武汉钢铁(集团)公司 | Baking method after the overhaul of steel-making tundish permanent layer |
| CN104057261A (en) * | 2014-06-30 | 2014-09-24 | 广东韶钢工程技术有限公司 | 120-ton steel ladle manufacturing process |
| CN104858409A (en) * | 2015-05-15 | 2015-08-26 | 武汉威林科技股份有限公司 | Steel ladle for steelmaking |
| CN105414538A (en) * | 2015-12-31 | 2016-03-23 | 保定安保能冶金设备有限公司 | Liquid aluminum tundish |
| CN105458238A (en) * | 2016-01-07 | 2016-04-06 | 保定安保能冶金设备有限公司 | Molten aluminum tundish |
| CN105618725A (en) * | 2016-02-22 | 2016-06-01 | 宁夏朗盛精密制造技术有限公司 | Compositely-bricked small-medium-sized steel ladle work lining |
| CN108746574A (en) * | 2018-07-25 | 2018-11-06 | 青岛万恒达机械设备有限公司 | A kind of ladle baking method |
| CN110722143A (en) * | 2019-11-18 | 2020-01-24 | 安徽省萧县华龙耐火材料有限责任公司 | Method for improving continuous casting efficiency of tundish |
| CN110722143B (en) * | 2019-11-18 | 2021-11-09 | 安徽省萧县华龙耐火材料有限责任公司 | Method for improving continuous casting efficiency of tundish |
| CN115555554A (en) * | 2022-11-04 | 2023-01-03 | 南京钢铁股份有限公司 | Steel ladle bottom seepage-proofing steel pouring method |
| CN115555554B (en) * | 2022-11-04 | 2024-09-20 | 南京钢铁股份有限公司 | Steel ladle bottom anti-seepage steel pouring method |
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Application publication date: 20120711 |