CN1064037A - Baking technology of metallurgical steel ladle - Google Patents
Baking technology of metallurgical steel ladle Download PDFInfo
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- CN1064037A CN1064037A CN 91107546 CN91107546A CN1064037A CN 1064037 A CN1064037 A CN 1064037A CN 91107546 CN91107546 CN 91107546 CN 91107546 A CN91107546 A CN 91107546A CN 1064037 A CN1064037 A CN 1064037A
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- ladle
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- low temperature
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The present invention is a kind of for the baking process of metallurgical works steel-making with ladle, and this baking process comprises the low temperature prebake conditions and the high temperature ladle inversion baking of ladle.Be inverted the waste gas that flows out behind the ladle high-temperature baking through the two-stage heat exchanger preheating air and coal gas, subsequently for the use of ladle low temperature prebake conditions, thereby improved the effect of ladle high-temperature baking, solved the thermal source of low temperature prebake conditions.Adopt the baking of ladle secondary to effectively utilize waste heat, the ladle baking cycle is shortened greatly, energy consumption significantly reduces, and the ladle baking quality improves, and obtains service life prolonging.The present invention can shorten the ladle baking time 50% compared with prior art, and the coal gas consumption reduces more than 50%, and bag prolongs more than 12% age, and age is wrapped in energy-saving and cost-reducing prolongation, effect is remarkable.
Description
The present invention is a kind of ladle baking new technology, is used for the baking of metallurgical works steel-making with ladle.
The new steel-making ladle of making, its inner lining refractory contains moisture content, therefore, the baking purpose of ladle is the moisture content of removing in the refractory material, prevent that moisture content enters in the molten steel in the refractory material, the ladle baking quality is most important to the influence of metallurgical quality, and the ladle baking quality is good, help reducing lining material in the ladle and bring field trash in the molten steel into, improve steel quality; Prolong the service life of ladle, energy savings improves and smelts economic benefit.
The normally used steel roasting process of existing metallurgical works has two kinds, and one is perpendicular baking, and perpendicular baking is to make the ladle mouth up, coal gas feeds in the bag from bag velar plate hole, and ladle is toasted, and it two dries by the fire for side, be the position reversing an angle of 90 degrees of ladle, ladle is toasted from erectting.Above-mentioned two kinds of baking methods, because the bag mouth turns to a side with the bag mouth up, therefore, bag mouthful sealing is poor during barbecue, consequently give fixed baking purpose in order to reach, and needing a fairly large number of coal gas, perpendicular baking and side to warm loss greatly, the thermal efficiency is low, baking cycle is long, and often do not reach and give fixed baking purpose, at the bottom of the ladle, ladle wall non-uniform temperature everywhere, ladle baking is of poor quality, ladle damages in use easily, reduce ladle service life, influenced metallurgical quality, increased the energy and refractory consumption rate.
The objective of the invention is to be improved at the deficiency of perpendicular baking of existing ladle and side baking technology, a kind of new technology of ladle baking is provided, steel roasting process after the improvement is that a kind of ladle is inverted baking process, requirement according to metallurgical works steel-making, ladle is inverted high-temperature baking, thereby has obtained satisfied cured effect.
Main points of the present invention are that ladle is inverted baking process and partly forms by two.(1) the low-temperature bake ladle two (7): promptly the ladle of new making is erect baking.(2) the high-temperature baking ladle one (1): will erect ladle after the baking and be in inversion state and be inverted high-temperature baking.Its technological process is: adopt the mixed gas of plant produced to heat the ladle one (1) that is upside down on the workbench (2) through burner (3) high temperature, ladle one (1) outflow is inverted in heating, the waste gas of band higher temperature, through two-stage heat exchanger (4), (6) after, respectively air and coal gas are given heat to uniform temperature, and the waste gas self-temperature reduces, waste gas after then temperature being reduced enters ladle two (7) by pipeline (5), it is carried out low temperature give baking, process low temperature gives the ladle two (7) after the baking, be upside down in and become ladle one (1) above the workbench (2), carry out high-temperature baking again, be that low-temperature bake-high temperature is inverted baking-for use, thus constantly repeatedly, provide the steel-making ladle.
First new integrated poured ladle of making two (7) can adopt standby heat source when carrying out low-temperature bake.
Low-temperature bake is removed natural water in the ladle inner wall refractory material.Ladle two (7) temperature reach＞and 200 degrees centigrade.When high temperature ladle one (1) is inverted baking, its coal gas static pressure P=10800～13800 Pascals, baking temperature reaches 1100～1250 degrees centigrade, is baked to ladle inner wall top layer refractory material and reaches sintering, and ladle can use for containing molten steel.
The present invention and existing integrated poured steel roasting process relatively have baking evenly, the advantage that the cycle is short, and good airproof performance, thermal efficiency height.The present invention can cut down the consumption of energy greatly, prolongs ladle service life.Compare with prior art, the present invention can shorten 24 hours cycles, saves the gas consumption amount more than 50%, improves bag and makes more than 12%, is not only applicable to the baking of integrated poured ladle, also is applicable to the ladle that various different refractory materials are built by laying bricks or stones, and is of many uses.
Figure one, the steel roasting process flow chart
1, ladle 1, pipeline
2, workbench 6, heat exchanger two
3, burner 7, ladle two
4, heat exchanger one
Shown in figure one, ladle is inverted baking process and is comprised that low temperature gives baking and sees ladle two (7), and high temperature is inverted baking and is seen ladle one (1), exhaust-heat exchanger one, two (4,6).Following technology is concrete enforcement of the present invention.Integrated poured ladle is inverted the baking process flow process: the mixed gas (QCP=5860～6070 kilojoules/standard cubic meter that adopts plant produced, P=13800 Pascal), heating is upside down in the ladle one (1) on the workbench (2), heated baking 12 hours, make the temperature of ladle one (1) reach 1100～1250 degrees centigrade, about 900 degrees centigrade of the EGT that flow out heating ladle one (1) back.Through two-stage heat exchanger is that heat exchanger one (4), heat exchanger two (6) give air hot arriving＞300-500 degree centigrade respectively, coal gas gives heat to＞200 degrees centigrade, thereby improve the bag bore temperature of ladle one (1), be beneficial to high temperature ladle one (1) and be inverted baking, the EGT that flow out this moment is reduced to 300-400 degree centigrade, enters by pipeline (5) immediately and waits to dry by the fire ladle two (7), and it is carried out prebake conditions, the prebake conditions time is 12 hours, temperature reaches＞and 200 degrees centigrade.Through the ladle of low-temperature bake, be inverted again and carry out high-temperature baking.
Claims (7)
1, ladle baking new technology is characterized in that baking process gives baking and high temperature by low temperature and finally toasts secondary and toast and to form.
Ladle is inverted when 2, it is characterized in that high-temperature baking by the described steel roasting process of claim 1, is inverted baking.
3, by the described ladle baking new technology of claim 2, it is characterized in that the high-temperature baking temperature is 1100-1250 degree centigrade, coal gas static pressure P=10800-13800 Pascal
4, by the described steel roasting process of claim 1, the waste gas that flows out when it is characterized in that adopting high-temperature baking vertically gives baking to ladle.
5,, it is characterized in that low temperature gives the temperature of baking＞200 degree centigrade by the described steel roasting process of claim 1.
6,, it is characterized in that the waste gas that high-temperature baking flows out adds hot-air through heat exchanger one (4) by the described steel roasting process of claim 1.
7,, it is characterized in that entering heat exchanger two (6) and adding heating gas through the waste gas of heat exchanger one (4) outflow by claim 1,6 described steel roasting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107546 CN1064037A (en) | 1991-12-03 | 1991-12-03 | Baking technology of metallurgical steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107546 CN1064037A (en) | 1991-12-03 | 1991-12-03 | Baking technology of metallurgical steel ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1064037A true CN1064037A (en) | 1992-09-02 |
Family
ID=4908881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107546 Pending CN1064037A (en) | 1991-12-03 | 1991-12-03 | Baking technology of metallurgical steel ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1064037A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551554A (en) * | 2013-09-25 | 2014-02-05 | 慈溪市汇丽机电有限公司 | Device for roasting molten iron pouring ladle |
| CN103551553A (en) * | 2013-10-29 | 2014-02-05 | 洛阳安轮铝制品有限公司 | Refining ladle energy-saving preheating device |
| CN104841919A (en) * | 2015-05-26 | 2015-08-19 | 唐山新宝泰钢铁有限公司 | High-efficiency, energy-saving and online curing process for long-service middle ladle |
| CN107186197A (en) * | 2017-04-10 | 2017-09-22 | 包头盛泰汽车零部件制造有限公司 | A kind of cast insulation stove aluminium alloy transfer method and its device |
| CN115283633A (en) * | 2022-08-04 | 2022-11-04 | 广西钢铁集团有限公司 | Method for preventing Q235B slab from generating bubbles |
-
1991
- 1991-12-03 CN CN 91107546 patent/CN1064037A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551554A (en) * | 2013-09-25 | 2014-02-05 | 慈溪市汇丽机电有限公司 | Device for roasting molten iron pouring ladle |
| CN103551553A (en) * | 2013-10-29 | 2014-02-05 | 洛阳安轮铝制品有限公司 | Refining ladle energy-saving preheating device |
| CN104841919A (en) * | 2015-05-26 | 2015-08-19 | 唐山新宝泰钢铁有限公司 | High-efficiency, energy-saving and online curing process for long-service middle ladle |
| CN107186197A (en) * | 2017-04-10 | 2017-09-22 | 包头盛泰汽车零部件制造有限公司 | A kind of cast insulation stove aluminium alloy transfer method and its device |
| CN115283633A (en) * | 2022-08-04 | 2022-11-04 | 广西钢铁集团有限公司 | Method for preventing Q235B slab from generating bubbles |
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