CN101886150A - Recycling method and system for steel ladle pouring afterheat-state steel slag - Google Patents
Recycling method and system for steel ladle pouring afterheat-state steel slag Download PDFInfo
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- CN101886150A CN101886150A CN2010102187758A CN201010218775A CN101886150A CN 101886150 A CN101886150 A CN 101886150A CN 2010102187758 A CN2010102187758 A CN 2010102187758A CN 201010218775 A CN201010218775 A CN 201010218775A CN 101886150 A CN101886150 A CN 101886150A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention relates to recycling method and system for steel ladle pouring afterheat-state steel slag. The method comprises the following steps of: mixing heat-state steel slag in a poured steel ladle into a foundry ladle accommodated with iron water, blowing oxygen to the foundry ladle, and carrying out subsequent treatment on the iron water in the foundry ladle. The system comprises the foundry ladle, a gas hood and an oxygen lance, wherein the foundry ladle is used for accommodating the iron water and supplying the heat-state steel slag in the poured steel ladle; the gas hood is communicated with an air draft dust-removing system and can cover an opening part of the foundry ladle; and the oxygen lance is used for blowing oxygen to the foundry ladle. The invention has the advantages of directly recycling residual steels in the poured steel ladle to improve metal yield ratios; directly recycling liquid-state slag in the poured steel ladle to accelerate and promote early dephosphorization of an electric arc furnace or an oxygen revolving furnace, improve the production efficiency, reduce the consumption of limes, and partially complete desilicication and dephosphorization tasks of the iron water in advance; and totally recycling physical sensible heat in the poured steel ladle, the residual steels and residual slag to reduce the waste discharge capacity and the corresponding treatment cost of the steel production process.
Description
Technical field:
A kind of steelworks that the present invention is specifically related to smelting iron and steel technical field method and system that hot steel slag is directly recycled in the ladle after to continuous casting.
Background technology:
In the smelting iron and steel technical field, generally contain higher CaO through the refining furnace purified residual steel residue of hot ladle (being mainly liquid state), it has stronger sweetening power under the low oxidative environment, and has a stronger dephosphorizing capacity in that the strong oxidizing property environment is next.Simultaneously, also contain a large amount of sensible heats in the residual steel residue of such hot ladle.Therefore, each iron and steel enterprise is paying close attention to how fully effectively recycle the residual steel residue of ladle for a long time always, and constantly effort for it, and increasingly serious along with global environmental protection situation, and this effort especially shows its necessity and importance.
At present, the recovery method of ladle hot steel slag mainly contains two classes, first cold conditions absorption method, and it two is hot absorption methods.The weak point of cold conditions absorption method is, except having wasted all physics sensible heats, also needs the machining processes in many backs step, and its technical scheme can be with reference to the application for a patent for invention of publication number CN101054607.Hot by contrast recovery rule has lot of advantages, it had both guaranteed the dual recovery of material and sensible heat, also saved the machining processes time under the cold conditions simultaneously, shortened smelting cycle, thereby improved productivity and overall economic benefit, this technology can be the application for a patent for invention of CN2758270A, CN101413037A and CN101476000A with reference to publication number specifically.The patent of invention of publication number CN1804047A is on the basis of the hot recovery method of tradition, develop and a kind of method of making steel the recycle and reuse of pouring afterheat-state slag, its technical scheme is that residual steel residue is poured in the empty ladle of waiting for tapping, reaches the purpose that residual steel recovery and melt cinder refining utilize again thereby allow molten steel that converter comes out and its mix to dash merge.But this method has and has following deficiency: it is strict to the timed interval restriction of tapping that the first is blended into empty bag back to residual steel residue, in case the timed interval is long, is easy to freeze at the bag end through once ladle-to-ladle residual steel residue, influence subsequent production and operate; It two is easily to make tap and total quantity of slag fluctuation occur, makes troubles for follow-up refining operation.
Summary of the invention:
The objective of the invention is to propose a kind of recoverying and utilizing method and system of steel ladle pouring afterheat-state steel slag, it can be realized pouring into a mould the direct recycling of liquid residual steel residue in the ladle of back, reach and economize on resources, energy-conserving and environment-protective and the purpose of enhancing productivity, thus overcome deficiency of the prior art.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of recoverying and utilizing method of steel ladle pouring afterheat-state steel slag is characterized in that, this method is: the hot steel slag that will pour into a mould in the ladle of back is blended in the hot metal ladle that fills molten iron, and oxygen blast in hot metal ladle is again carried out subsequent disposal to the molten iron in the hot metal ladle thereafter.
Further, this method is specially: the hot steel slag that will pour into a mould in the ladle of back is blended in the hot metal ladle that fills molten iron, and the temperature of molten iron in the hot metal ladle and the flowability of slag blanket are regulated in oxygen blast in hot metal ladle again, thereafter the molten iron in the hot metal ladle are carried out subsequent disposal.
This method comprises the steps:
Molten iron in the hot metal ladle is carried out pre-treatment;
Hot residual molten steel slag in the ladle is blended into hot metal ladle;
The temperature of molten iron and the flowability of slag blanket are regulated in molten iron oxygen blast in hot metal ladle;
Molten iron in the hot metal ladle is blended into electric arc furnace or oxygen coverter carries out the subsequent smelting operation.
The concrete steps that this method comprises are:
To the processing of skimming of molten iron in the hot metal ladle;
Hot metal ladle is transported to hot steel slag is blended into station, and the hot residual molten steel slag in the ladle is blended into hot metal ladle;
Hot metal ladle is transported to hot steel slag reclaims the pre-treatment station, cover the hot metal ladle peristome, and, regulate the temperature of molten iron and the flowability of slag blanket with the molten iron oxygen blast of oxygen rifle in hot metal ladle with a petticoat pipe;
Petticoat pipe and oxygen rifle are removed from hot metal ladle, and measure the temperature of the molten iron in the hot metal ladle, sampling detects;
Molten iron in the hot metal ladle is blended into electric arc furnace or oxygen coverter carries out the subsequent smelting operation.
A kind of system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag as mentioned above that is applied to is characterized in that this system comprises:
Hot metal ladle, this foundry ladle be in the splendid attire molten iron, and can be for the hot steel slag that is blended in the ladle of cast back;
Petticoat pipe, this petticoat pipe and a ventilation and dust removal system connectivity, and can cover the peristome of hot metal ladle;
And the oxygen rifle, this oxygen rifle can oxygen blast in hot metal ladle.
Particularly, described oxygen rifle is communicated with an oxygen system, and can make the oxygen rifle do the oxygen rifle grasping system clamping of lifting and spinning movement by one.
Described petticoat pipe is connected with a drive system that can make petticoat pipe make lifting action at least, but and offers the through hole that an oxygen supply rifle passes on this petticoat pipe.
Described system also comprises slag removal machine, and this slag removal machine can be to the processing of skimming of the molten iron in the hot metal ladle.
Gas permeable brick is installed in described hot metal ladle bottom.
Described system also comprises three auxiliary material storehouses that are respectively applied for storage dress lime, iron scale and fluorite, these three auxiliary material storehouses are installed in hot steel slag side by side and reclaim on the service platform at pre-treatment station place, and each auxiliary material Cang Dibuchuliaokou connects rotatable chute, when adding auxiliary material in hot metal ladle, rotatable chute outlet rotates to the top of hot metal ladle.The function of above-mentioned auxiliary material is: lime dephosphorizing agent, iron scale be dephosphorizing agent be again dissolving agent, fluorite then works the lime of fluxing.
As mentioned before, generally contain higher CaO through the refining furnace purified residual steel residue of hot ladle (being mainly liquid state), it has stronger sweetening power and dephosphorizing capacity after class respectively in different conditions.Simultaneously, also contain a large amount of sensible heats in the residual steel residue of such hot ladle.Main purpose of the present invention be exactly with this refining slag under the prerequisite that satisfies the technology direct motion, be blended in electric arc furnace or the oxygen coverter, reach residual steel residue and reclaim and promote early stage slagging in the stove, strengthen low temperature dephosphorization efficient.But because the unique apparatus structural limitations of electric arc furnace, be difficult to from ladle, directly pour in the stove hot steel slag, the employing of the invention is with hot steel slag elder generation and be blended in the hot metal ladle, simultaneously, for avoiding or eliminating because the molten iron surface knot lid that low temperature caused, also adopt the oxygen rifle to oxygen blast in the hot metal ladle, with the flowability of molten metal and slag liquid in the adjusting hot metal ladle that heats up, so that in electric arc furnace or converter, be blended into smoothly.The heat that oxygen blast produces mainly comes from Fe, Si, and the oxidation heat liberation of elements such as P, and as the oxidation products of Fe element, FeO is good dissolving agent, with the change slag that promotes in the electric arc furnace; The oxidation of Si element will directly reduce the Si content in the molten iron, and for few slag refining operation in later stage provides condition, and in fact, desiliconization is one of modernized steel mill three general objectives of producing hot metal pretreatment in the Clean Steel operation; The oxidation of the part P element in oxygen blast temperature adjustment process then with basic goal of the present invention be on all four (its reaction principle is:
2[P]+5 (FeO)+4 (CaO)=(4CaO.P2O5)+5[Fe] or
2[P]+5(FeO)+3(CaO)＝(3CaO.P2O5)+5[Fe])。
So, be main purpose oxygen blast operation with the attemperation, also partly finished the two main tasks of hot metal pretreatment simultaneously in advance: dephosphorization and desiliconization.After the hot metal ladle oxygen blast finishes, hot metal ladle can be transported to electric arc furnace hot-metal charging notch or oxygen coverter and convert iron.
The equipment that is adopted among the present invention mainly is that a thermal-arrest attitude steel, slag reclaim and initial stage desiliconizing and dephosphorizing refining reactor together, and the main body of this reactor is a hot metal ladle, the flue gas dust collecting system that the bag top is settled aerobic rifle, petticoat pipe and is communicated with petticoat pipe, its structure is very simple, only needs to transform by a small margin on the basis of existing installation to make up formation.Certainly, it is pointed out that above-mentioned hot metal ladle should have enough volumes, bearing liquid residual steel and the residue that is blended into, and can block the liquid metal that may occur in the back step oxygen blast process or the splash of slag.In addition, also gas permeable brick can be installed at the bottom of the above-mentioned hot metal ladle, during intensive treatment to the stirring of molten iron in the bag and the dephosphorization desiliconization agent that adds from auxiliary material storehouse (as mentioned before), molten iron is carried out the dephosphorization desiliconization of deeper degree, to realize the production of high-quality steel grade.
Compared with prior art, the present invention has following beneficial effect:
(1) directly reclaims the residual steel in the ladle behind the continuous casting, improved the recovery rate of metal;
(2) directly recycled the liquid residue in the ladle behind the continuous casting, this high basicity slag can quicken and promote electric arc furnace or oxygen coverter dephosphorization in early stage, improve production efficiency, and can reduce the consumption of lime, and partly finished the desiliconization and the dephosphorization task of molten iron in advance;
(3) all reclaimed behind the continuous casting physics sensible heat in the residual steel residue in the ladle;
(4) waste discharge (slag) that has reduced steelmaking process is measured and corresponding processing cost.
Description of drawings
Fig. 1 is the structural representation of the recycling system of steel ladle pouring afterheat-state steel slag in the specific embodiment of the invention;
Fig. 2 is the process flow sheet of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag in the specific embodiment of the invention.
Embodiment
Below in conjunction with the drawings and the specific embodiments technical scheme of the present invention is described further.
As shown in Figure 1, the recycling system of this steel ladle pouring afterheat-state steel slag both had been applicable to that electric-arc furnace steelmaking factory also was applicable to oxygen converter steelmaking factory, and its nucleus equipment is that a thermal-arrest attitude steel, slag reclaim and initial stage desiliconizing and dephosphorizing refining reactor together.This reactor body is a hot metal ladle 1, and it can be used for the splendid attire molten iron, and can be for the hot steel slag that is blended in the ladle of cast back, and simultaneously, this system also comprises oxygen rifle and petticoat pipe,
This petticoat pipe 2 can cover the peristome of hot metal ladle, it is communicated with a ventilation and dust removal system 4, simultaneously, this petticoat pipe is connected with a drive system that can make petticoat pipe make lifting action at least, but and offer the through hole that an oxygen supply rifle passes on this petticoat pipe, this oxygen rifle 3 is communicated with an oxygen system, and can make the oxygen rifle do the oxygen rifle grasping system clamping of lifting and spinning movement by one, when hot metal ladle moves to hot steel slag recovery pre-treatment station, this petticoat pipe can come downwards to the appropriate location, thereby cover on the hot metal ladle top the also descending through hole that passes on the petticoat pipe of this oxygen rifle, and oxygen blast in hot metal ladle simultaneously.
Postscript also can be provided with other support equipment such as slag removal machine etc. in this system, and certainly, if existing hot metal pretreatment equipment in the steelshop, the slag removal machine of its outfit then can be shared, otherwise must add the equipment of skimming accordingly.
In addition, also gas permeable brick can be installed at the bottom of the above-mentioned hot metal ladle, to strengthen stirring to molten iron in the bag; Simultaneously, described system also comprises three auxiliary material storehouses that are respectively applied for storage dress lime, iron scale and fluorite, these three auxiliary material storehouses are installed in hot steel slag side by side and reclaim on the service platform at pre-treatment station place, and each auxiliary material Cang Dibuchuliaokou connects rotatable chute, when adding auxiliary material in hot metal ladle, rotatable chute outlet rotates to the top of hot metal ladle.When hot steel slag reclaims pre-treatment, because of in hot metal ladle, adding above-mentioned auxiliary material, can carry out the dephosphorization desiliconization of deeper degree, realize the production of high-quality steel grade.
The hot steel slag that utilizes said system to carry out is recycled technical process as shown in Figure 2, and its concrete operation is:
Hold through the pretreated molten iron of KR desulfurization (mechanical mixing method desulfurization) with hot metal ladle, or the molten iron that directly ships from blast furnace, and pull down the top slag in the position of skimming, then hot metal ladle is transported to hot steel slag by the molten iron conveying track and is blended into station, as an example, the contained chemical ingredients of above-mentioned molten iron (weight percent) is as shown in table 1;
In hot metal ladle, be blended into the liquid residual steel residue (hot steel slag) in the ladle behind the continuous casting by overhead traveling crane, wherein the chemical ingredients and the weight percent content thereof of residue (that is to say refinery scum) are as shown in table 2, by this table as can be known, the content of CaO is up to 62% in the residue, and the content of P2O5 has only 0.013%, and this residue should possess very strong dephosphorizing capacity under the oxidisability condition;
To continue to be transported to hot steel slag towards the hot metal ladle of having converted hot steel slag and reclaim the pre-treatment station, cover falls in thermometric, fall the rifle oxygen blast, oxygen blow duration is determined by the weight and the temperature of molten iron temperature, residual steel residue, after oxygen blast finishes, thermometric for the second time, so far, hot steel slag reclaims pretreatment process and finishes;
Hot metal ladle is winched to electric arc furnace or oxygen coverter is converted iron, to producing Finished Steel (its composition is as shown in table 3).
Table 1 hot metal composition and weight percent content thereof
| Element | ??C | ??Si | ??Mn | ??P | ??S | ??Ti |
| ??wt％ | ??4.10 | ??0.65 | ??0.2 | ??0.1 | ??0.062 | ??0.047 |
Table 2 refinery scum composition and weight percent content thereof
| Component | ??SiO 2 | ??Al 2O 3 | ??CaO | ??MgO | ??TFe | ??MnO | ??R | ??S | ??P 2O 5 | ??TiO 2 |
| ??wt％ | ??26.45 | ??1.43 | ??62.15 | ??5.42 | ??0.8 | ??0.33 | ??2.35 | ??1.5 | ??0.013 | ??0.086 |
Table 3 Finished Steel water constituent composition and weight percent content thereof
| Element | ??C | ??Si | ??Mn | ??P | ??S |
| ??wt％ | ??0.72 | ??0.2 | ??0.49 | ??0.014 | ??0.005 |
At present, Jiangsu Shagang Group Co., Ltd. has applied the present invention to actual production, shows through practice, behind employing the present invention, can produce following effect:
(1) directly reclaimed whole residual steel after ladle waters.The size of residual steel yield depends on the amount of capacity of ladle and when cast to the strict degree of control of the quantity of slag down, and the big more residual steel amount that then reclaims of ladleful is big more, and the residual steel amount that the control tight more (being that slide gate nozzle is closed more early) of the quantity of slag is down then reclaimed is big more.With a production example estimation, if produced 33 stoves in one day, the residual steel amount of every stove is 500 kilograms (100 tons of ladles), and then the residual steel yield in 1 year is about 5800 tons.
(2) shorten the smelting cycle of electric arc furnace, improved productivity.Because hot slag directly is blended in the electric arc furnace, has shortened initial stage slagging required time, dephosphorisation reaction is shifted to an earlier date final shortening smelting cycle, the purpose of boosting productivity of realizing.If 100 tons of capacity electric arc furnace were produced 33 stoves in one day, adopt the smelting cycle that the invention enables electric arc furnace to shorten 10 minutes, then can save about 1900 hours of tap to tap time in 1 year.
(3) a large amount of energy consumptions have been saved.The physics heat of liquid residual steel and residue has all obtained recovery.If calculate 500 kilograms of the residual steel amounts of every stove, 500 kilograms of level of residue, then annual recyclable calorific value about 2.36 * 10 by producing 33 furnace gauges every day
7MJ, or 6.56 * 10
6KWh.
(4) reduced the consumption of lime.The hot residue that reclaims has directly reduced the lime adding amount of electric arc furnace slag making in early stage dephosphorization.Produce the example calculating of 33 stoves equally with 100 tons of electric arc furnace daily, contain 310 kilograms of pure CaO approximately in 500 kilograms of residues of every stove.Consider that element silicon oxidation in the new molten iron causes the influence of the reduction of basicity in the slag, rough set in the residue existing 310 kilograms of pure CaO and can make next stokehold phase slag lime add-on reduce its half, the amount of lime that then every stove adds less is the 310/2/90%=172 kilogram.The amount of lime of saving in 1 year is near 2000 tons.
(5) significantly reduce the quantity discharged of waste residue.
Certainly, each smelting iron and steel enterprise also can be according to the processing set-up characteristics that own factory had, and with reference to technology of the present invention, thereby design the close or equivalent processes that meets s own situation.Therefore, the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (10)
1. the recoverying and utilizing method of a steel ladle pouring afterheat-state steel slag is characterized in that, this method is: the hot steel slag that will pour into a mould in the ladle of back is blended in the hot metal ladle that fills molten iron, and oxygen blast in hot metal ladle is again carried out subsequent disposal to the molten iron in the hot metal ladle thereafter.
2. the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1, it is characterized in that, this method is specially: the hot steel slag that will pour into a mould in the ladle of back is blended in the hot metal ladle that fills molten iron, oxygen blast in hot metal ladle again, regulate the temperature of molten iron in the hot metal ladle and the flowability of slag blanket, thereafter the molten iron in the hot metal ladle is carried out subsequent disposal.
3. the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 and 2 is characterized in that, this method comprises the steps:
Molten iron in the hot metal ladle is carried out pre-treatment;
Hot residual molten steel slag in the ladle is blended into hot metal ladle;
The temperature of molten iron and the flowability of slag blanket are regulated in molten iron oxygen blast in hot metal ladle;
Molten iron in the hot metal ladle is blended into electric arc furnace or oxygen coverter carries out the subsequent smelting operation.
4. the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 and 2 is characterized in that, the concrete steps that this method comprises are:
To the processing of skimming of molten iron in the hot metal ladle;
Hot metal ladle is transported to hot steel slag is blended into station, and the hot residual molten steel slag in the ladle is blended into hot metal ladle;
Hot metal ladle is transported to hot steel slag reclaims the pre-treatment station, cover the hot metal ladle peristome, and, regulate the temperature of molten iron and the flowability of slag blanket with the molten iron oxygen blast of oxygen rifle in hot metal ladle with a petticoat pipe;
Petticoat pipe and oxygen rifle are removed from hot metal ladle, and measure the temperature of the molten iron in the hot metal ladle, sampling detects;
Molten iron in the hot metal ladle is blended into electric arc furnace or oxygen coverter carries out the subsequent smelting operation.
5. be applied to the system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1, it is characterized in that, this system comprises:
Hot metal ladle, this foundry ladle be in the splendid attire molten iron, and can be for the hot steel slag that is blended in the ladle of cast back;
Petticoat pipe, this petticoat pipe and a ventilation and dust removal system connectivity, and can cover the peristome of hot metal ladle;
And the oxygen rifle, this oxygen rifle can oxygen blast in hot metal ladle.
6. the system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 that is applied to as claimed in claim 5, it is characterized in that, described oxygen rifle is communicated with an oxygen system, and can make the oxygen rifle do the oxygen rifle grasping system clamping of lifting and spinning movement by one.
7. the system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 that is applied to as claimed in claim 5, it is characterized in that, described petticoat pipe is connected with a drive system that can make petticoat pipe make lifting action at least, but and offers the through hole that an oxygen supply rifle passes on this petticoat pipe.
8. the system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 that is applied to as claimed in claim 5 is characterized in that described system also comprises slag removal machine, and this slag removal machine can be to the processing of skimming of the molten iron in the hot metal ladle.
9. the system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 that is applied to as claimed in claim 5 is characterized in that, gas permeable brick can be selected to install or do not install in described hot metal ladle bottom.
10. the system of the recoverying and utilizing method of steel ladle pouring afterheat-state steel slag according to claim 1 that is applied to as claimed in claim 5, it is characterized in that, described system also comprises three auxiliary material storehouses that are respectively applied for storage dress lime, iron scale and fluorite, these three auxiliary material storehouses are installed in a hot steel slag side by side and reclaim on the service platform at pre-treatment station place, and each auxiliary material Cang Dibuchuliaokou connects rotatable chute, when adding auxiliary material in hot metal ladle, rotatable chute outlet rotates to the top of hot metal ladle.
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| CN101984087A (en) * | 2010-11-18 | 2011-03-09 | 马鞍山钢铁股份有限公司 | Slag liquefaction heating process and device |
| CN102719622A (en) * | 2011-03-29 | 2012-10-10 | 鞍钢股份有限公司 | Method for recycling steel-making injection residual thermal-state steel slag |
| CN103014230A (en) * | 2012-06-01 | 2013-04-03 | 新疆八一钢铁股份有限公司 | Method for producing low-phosphorus high-carbon steel by duplex hot-adding slag washing for electric furnace |
| CN104004884A (en) * | 2014-06-12 | 2014-08-27 | 鞍钢股份有限公司 | Operation method for recycling continuous casting residual steel slag from hot-metal ladle |
| CN104588631A (en) * | 2015-01-19 | 2015-05-06 | 新疆八一钢铁股份有限公司 | Method of applying steel slag waste heat to bake new-built ladle |
| CN105969931A (en) * | 2016-06-27 | 2016-09-28 | 江苏永钢集团有限公司 | Recycling method for large ladle of residues |
| CN107858485A (en) * | 2017-10-20 | 2018-03-30 | 芜湖新兴铸管有限责任公司 | Refine the circulation utilization method of warm sludge |
| CN109371190A (en) * | 2018-11-09 | 2019-02-22 | 鞍钢股份有限公司 | Method for desiliconizing high-silicon molten iron by using continuous casting cutting waste residues |
| CN109797338A (en) * | 2019-02-11 | 2019-05-24 | 黑龙江建龙钢铁有限公司 | A kind of big packet of square billet process pours remaining back to half ladle semisteel smelting technique |
| CN109852764A (en) * | 2019-04-01 | 2019-06-07 | 山东钢铁集团日照有限公司 | A kind of LF refining top slag thermal state utilization method |
| CN113088800A (en) * | 2021-04-15 | 2021-07-09 | 天津市新天钢钢铁集团有限公司 | Method for recycling refining slag and molten steel casting residue of low-carbon aluminum killed steel LF furnace |
| CN114231674A (en) * | 2021-11-26 | 2022-03-25 | 凉山瑞京环保资源开发有限公司 | Liquid casting residue treatment process |
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| CN101984087B (en) * | 2010-11-18 | 2012-07-04 | 马鞍山钢铁股份有限公司 | Slag liquefaction heating process and device |
| CN101984087A (en) * | 2010-11-18 | 2011-03-09 | 马鞍山钢铁股份有限公司 | Slag liquefaction heating process and device |
| CN102719622A (en) * | 2011-03-29 | 2012-10-10 | 鞍钢股份有限公司 | Method for recycling steel-making injection residual thermal-state steel slag |
| CN102719622B (en) * | 2011-03-29 | 2014-11-05 | 鞍钢股份有限公司 | Method for recycling steel-making injection residual thermal-state steel slag |
| CN103014230A (en) * | 2012-06-01 | 2013-04-03 | 新疆八一钢铁股份有限公司 | Method for producing low-phosphorus high-carbon steel by duplex hot-adding slag washing for electric furnace |
| CN104004884A (en) * | 2014-06-12 | 2014-08-27 | 鞍钢股份有限公司 | Operation method for recycling continuous casting residual steel slag from hot-metal ladle |
| CN104588631B (en) * | 2015-01-19 | 2018-12-11 | 新疆八一钢铁股份有限公司 | The method for newly building by laying ladle using steel slag waste heat baking |
| CN104588631A (en) * | 2015-01-19 | 2015-05-06 | 新疆八一钢铁股份有限公司 | Method of applying steel slag waste heat to bake new-built ladle |
| CN105969931A (en) * | 2016-06-27 | 2016-09-28 | 江苏永钢集团有限公司 | Recycling method for large ladle of residues |
| CN107858485A (en) * | 2017-10-20 | 2018-03-30 | 芜湖新兴铸管有限责任公司 | Refine the circulation utilization method of warm sludge |
| CN109371190A (en) * | 2018-11-09 | 2019-02-22 | 鞍钢股份有限公司 | Method for desiliconizing high-silicon molten iron by using continuous casting cutting waste residues |
| CN109371190B (en) * | 2018-11-09 | 2020-11-20 | 鞍钢股份有限公司 | Method for desiliconizing high-silicon molten iron by using continuous casting cutting waste residues |
| CN109797338A (en) * | 2019-02-11 | 2019-05-24 | 黑龙江建龙钢铁有限公司 | A kind of big packet of square billet process pours remaining back to half ladle semisteel smelting technique |
| CN109852764A (en) * | 2019-04-01 | 2019-06-07 | 山东钢铁集团日照有限公司 | A kind of LF refining top slag thermal state utilization method |
| CN113088800A (en) * | 2021-04-15 | 2021-07-09 | 天津市新天钢钢铁集团有限公司 | Method for recycling refining slag and molten steel casting residue of low-carbon aluminum killed steel LF furnace |
| CN113088800B (en) * | 2021-04-15 | 2022-08-16 | 天津市新天钢钢铁集团有限公司 | Method for recycling refining slag and molten steel casting residue of low-carbon aluminum killed steel LF furnace |
| CN114231674A (en) * | 2021-11-26 | 2022-03-25 | 凉山瑞京环保资源开发有限公司 | Liquid casting residue treatment process |
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