CN115323118B - Method for preparing slag agent for converter from LF refining slag - Google Patents
Method for preparing slag agent for converter from LF refining slag Download PDFInfo
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- CN115323118B CN115323118B CN202210790996.5A CN202210790996A CN115323118B CN 115323118 B CN115323118 B CN 115323118B CN 202210790996 A CN202210790996 A CN 202210790996A CN 115323118 B CN115323118 B CN 115323118B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
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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
Abstract
The application provides a method for preparing a slag agent for a converter from LF furnace refining slag, which belongs to the technical field of slag agents for converters, and comprises the following steps: mixing LF refining slag, iron scale, binder, auxiliary materials and water to obtain a mixture; performing ball pressing molding on the mixture, and drying to obtain a slag agent for the converter; wherein, in the mixture, the mass fractions of the LF furnace refining slag, the iron scale, the binder, the auxiliary materials and the water are respectively as follows: LF furnace refining slag: 20-60 percent of iron oxide scale: 5-25% of adhesive: 0-3% of auxiliary materials: 10-30% of water: 3 to 10 percent. The method takes the LF refining slag and the iron scale generated in the continuous casting process as main raw materials, the prepared slag agent can meet the converter steelmaking requirement, and the manufacturing cost of the slag agent for the converter is reduced while the high-value utilization of the LF refining slag and the continuous casting iron scale is realized.
Description
Technical Field
The application belongs to the technical field of slag agents for converters, and particularly relates to a method for preparing slag agents for converters from LF furnace refining slag.
Background
At present, in order to better promote the improvement of the quality of molten steel in the steelmaking process and improve the smelting effect, a certain amount of slag agent (the main chemical composition is required to be more than 10 percent, the CaO content is more than 10 percent and the SiO is added in the converter smelting process 2 The content is less than 10 percent, al 2 O 3 The content is more than 15%, the MgO content is less than 10%, fe 2 O 3 The content is more than 16%, the S content is less than 0.10%, the granularity is 10-50 mm), the unit price of outsourcing slag agent is up to more than 1000 yuan/ton, the annual consumption slag dosage is up to more than ten million yuan, and the cost is high.
Disclosure of Invention
In order to solve the technical problem of high cost of slag agents for a converter, the application provides a method for preparing slag agents for a converter from LF (ladle furnace) refining slag.
The application is realized by the following technical scheme:
the application provides a method for preparing a slag agent for a converter from LF furnace refining slag, which comprises the following steps:
mixing LF refining slag, iron scale, binder, auxiliary materials and water to obtain a mixture;
performing ball pressing molding on the mixture, and drying to obtain a slag agent for the converter;
wherein, in the mixture, the mass fractions of the LF furnace refining slag, the iron scale, the binder, the auxiliary materials and the water are respectively as follows:
LF furnace refining slag: 20-60 percent of iron oxide scale: 5-25% of adhesive: 0-3% of auxiliary materials: 10-30% of water: 3 to 10 percent.
Optionally, the mixing of the LF refining slag, the iron scale, the binder, the auxiliary materials and the water to obtain the mixture specifically comprises the following steps:
stirring the LF refining slag, the iron scale, the binder, the auxiliary materials and the water for 5-10 min until the mixture is uniformly mixed, and obtaining the mixture.
Optionally, the iron scale is produced through a molten steel continuous casting process.
Optionally, the grain sizes of the LF furnace refining slag and the iron scale are smaller than 1mm, and the grain sizes of the auxiliary materials are smaller than 60 meshes.
Optionally, the binder is an organic binder or glass water.
Optionally, the auxiliary material comprises aluminum slag ash and fluorite, and the mass ratio of the aluminum slag ash to the fluorite is 3:5.
optionally, in the ball pressing forming, the feeding speed is 200-300 kg/min, the pressure is controlled at 20-40Mpa, and the rotating speed is controlled at 30-90 r/min.
Optionally, the drying is natural airing or drying at 40-100 ℃.
Optionally, the water content of the slag agent for the converter is less than 0.5%, the strength is more than or equal to 1000N/ball, and the grain diameter is 20-50 mm.
Optionally, the water is industrial water.
One or more technical schemes of the application have at least the following technical effects or advantages:
1. the application relates to a method for preparing slag agent for converter by LF furnace refining slag, which uses LF furnace refining slag and iron oxide scale produced in continuous casting process as main raw materials, and the prepared slag agent can meet the requirement of converter steelmaking by adjusting the components and proportion of each raw material, thereby reducing the manufacturing cost of slag agent for converter while realizing high-value utilization of LF furnace refining slag and continuous casting iron oxide scale, and the application is characterized in that the LF furnace refining slag component takes Ca-Al-Mg as main component, the iron oxide scale main component is iron oxide, and the slag agent is added with partThe aluminum slag ash can provide Al and Al 2 O 3 Fluorite provides CaF 2 After the prepared slag agent is added into a converter, the steel slag reacts with Al in the slag agent rapidly and releases a large amount of heat, so that the melting point of the steel slag is reduced, the fluidity of the steel slag is enhanced by utilizing fluoride, meanwhile, calcium, aluminum and magnesium elements are provided, the ternary alkalinity of the steel slag is reduced, and a low-melting-point slag system is formed by primary slag, so that the viscosity of the steel slag is reduced, and the time for pouring the steel slag into a slag tank is shortened; meanwhile, the loss of the converter steel slag can be reduced, and good conditions are provided for slag splashing and furnace protection of the converter, so that the service life of the converter is prolonged.
2. The application relates to a method for preparing a slag agent for a converter from LF refining slag, which adopts LF refining slag, iron oxide scales generated by continuous casting, auxiliary materials and the like and organizes the slag agent according to a specific proportion, can ensure that after the slag agent is added into the converter, the slag melting point is reduced by quick reaction, a stable ternary alkalinity low-melting-point slag system is formed, good slag viscosity and fluidity are ensured, and the proportion exceeding the range or being lower than the proportion can cause poor slag effect, poor slag viscosity and fluidity, oxygen lance adhesion, influence on blowing and oxygen lance use, slow slag time, prolonged smelting period, reduced steel yield and increased cost.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for preparing slag agent for converter from LF furnace refining slag;
fig. 2 is a schematic diagram of a process for preparing a slag agent for a converter from LF refining slag according to the present application.
Detailed Description
The advantages and various effects of the present application will be more clearly apparent from the following detailed description and examples. It will be understood by those skilled in the art that these specific embodiments and examples are intended to illustrate the application, not to limit the application.
Throughout the specification, unless specifically indicated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the present specification will control.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The technical scheme provided by the application aims to solve the technical problems, and the general idea is as follows:
the applicant found that refining slag (powder, granularity smaller than 3mm and larger than 90%) generated in the refining process of the steelmaking LF furnace has the main chemical components of CaO content of 30-50% and Al 2 O 3 The content is 20-40%, the MgO content is more than 5%,FeO content is more than 10%, S content is less than 0.30%, and the waste is mainly used as solid waste for low-value utilization at present, so that the processing amount is increased, and meanwhile, the economic benefit is not obvious.
The main chemical components of the iron scale produced in the steelmaking continuous casting process are TFe content of more than 70 percent and SiO 2 The content of Al is 4.0-5.0% 2 O 3 The content is 1.0-1.5%, the content of C is 0.5-1.0%, and the method is mainly applied to the steel flow process to recover the iron element therein, and the economic benefit of recycling is difficult to realize maximization.
Based on the method, in order to better treat the refining slag of the steelmaking LF furnace and realize efficient resource utilization, the application develops a new process route and thinking, and solves the environmental protection problems caused by low-value utilization and stockpiling of the refining slag of the steelmaking LF furnace and the iron scale generated in the continuous casting process.
According to an exemplary embodiment of the present application, there is provided a method for preparing a slag agent for a converter from LF refining slag, as shown in fig. 1, the method including:
s1, mixing LF refining slag, iron scale, a binder, auxiliary materials and water to obtain a mixture;
s2, performing ball pressing forming on the mixture, and drying to obtain a slag agent for the converter;
wherein, in the mixture, the mass fractions of the LF furnace refining slag, the iron scale, the binder, the auxiliary materials and the water are respectively as follows:
LF furnace refining slag: 20-60 percent of iron oxide scale: 5-25% of adhesive: 0-3% of auxiliary materials: 10-30% of water: 3 to 10 percent.
In the application, the LF refining slag and the iron oxide scale generated in the continuous casting process are taken as main raw materials, the components and the proportion of each raw material are adjusted, the prepared slag agent can meet the converter steelmaking requirement, the high-value utilization of the LF refining slag and the continuous casting iron oxide scale is realized, and the manufacturing cost of the slag agent for the converter is reduced at the same time, the application is characterized in that the LF refining slag component takes Ca-Al-Mg as the main component, the iron oxide scale is taken as the main component, and the addition of part of aluminum slag ash can provide Al and Al 2 O 3 Fluorite provides CaF 2 After the prepared slag agent is added into a converter, the steel slag reacts with Al in the slag agent rapidly and releases a large amount of heat, so that the melting point of the steel slag is reduced, the fluidity of the steel slag is enhanced by utilizing fluoride, meanwhile, calcium, aluminum and magnesium elements are provided, the ternary alkalinity of the steel slag is reduced, and a low-melting-point slag system is formed by primary slag, so that the viscosity of the steel slag is reduced, and the time for pouring the steel slag into a slag tank is shortened; meanwhile, the loss of the converter steel slag can be reduced, and good conditions are provided for slag splashing and furnace protection of the converter, so that the service life of the converter is prolonged.
In the application, the LF refining slag, iron oxide scales generated by continuous casting, auxiliary materials and other components are adopted and organized according to a specific proportion, so that after a slag agent is added into a converter, the slag melting point is reduced by quick reaction, a stable low-melting slag system with ternary alkalinity is formed, good slag viscosity and fluidity are ensured, and the proportion exceeding the range or being lower than the proportion can cause poor slag effect, poor slag viscosity and fluidity, oxygen lance adhesion, influence on blowing and oxygen lance use, slow slag time, prolonged smelting period, reduced steel yield and increased cost.
As an optional implementation manner, the method for mixing the LF refining slag, the iron scale, the binder, the auxiliary materials and the water to obtain the mixture specifically comprises the following steps:
stirring the LF refining slag, the iron scale, the binder, the auxiliary materials and the water for 5-10 min until the mixture is uniformly mixed, and obtaining the mixture.
As an alternative embodiment, the scale is produced by a molten steel continuous casting process.
As an alternative implementation mode, the grain sizes of the LF furnace refining slag and the iron scale are smaller than 1mm, and the grain sizes of the auxiliary materials are smaller than 60 meshes.
In the application, the grain sizes of LF furnace refining slag and iron scale are less than 1mm, and the grain sizes of auxiliary materials are less than 60 meshes, so that the materials are fully and uniformly mixed.
As an alternative embodiment, the binder is an organic binder or glass water.
In the application, the binder has the function of enabling the material to have certain viscosity and is beneficial to molding.
As an optional embodiment, the auxiliary material comprises aluminum slag ash and fluorite, and the mass ratio of the aluminum slag ash to the fluorite is 3:5.
in the application, the aluminum slag ash and fluorite have the advantages that the aluminum slag ash can provide reaction heat, the melting point of slag is reduced, and the fluorite is beneficial to improving the fluidity of slag.
As an alternative implementation mode, in the ball pressing forming, the feeding speed is 200-300 kg/min, the pressure is controlled to be 20-40Mpa, and the rotating speed is controlled to be 30-90 r/min.
In the application, the ball pressing pressure of the ball pressing machine is kept at 20-40Mpa, so that the ball pressing pressure is properly regulated according to the ball forming strength performance, and the production requirement is met after the ball pressing is ensured.
As an alternative embodiment, the drying is natural drying or drying at 40-100 ℃.
As an alternative implementation mode, the water content of the slag agent for the converter is less than 0.5%, the strength is more than or equal to 1000N/ball, and the grain size is 20-50 mm.
As an alternative embodiment, the water is industrial water.
The method for preparing slag agent for converter from LF furnace refining slag according to the present application will be described in detail with reference to examples, comparative examples and experimental data.
Example 1
The method for preparing slag agent for converter from LF furnace refining slag in this embodiment, as shown in FIG. 2, includes:
(1) Stirring LF refining slag, iron oxide scale produced by continuous casting, binder (glass water), auxiliary materials and water for 10-30min until the materials are mixed uniformly to obtain a mixture;
wherein, the mass fraction of each raw material in the mixture is as follows: LF furnace refining slag: 20-60 percent of iron oxide scale: 5-25% of glass water: 0-3% of auxiliary materials: 10-30% of water: 3 to 10 percent.
Wherein, the grain size of LF refining slag and iron scale is less than 1mm, and the grain size of auxiliary materials is less than 60 meshes; the auxiliary materials comprise the following components in percentage by mass: 5 aluminum slag ash and fluorite; industrial water is used as water.
(2) And (3) performing ball pressing forming on the mixture, wherein the feeding speed of ball pressing equipment is 280kg/min, the pressure is controlled to be 20-40Mpa, and the rotating speed is controlled to be 50r/min.
(3) After the ball pressing is finished, drying is carried out at 80 ℃ to obtain the slag agent for the converter, wherein the water content is less than 0.5%, the strength is more than or equal to 1000N/ball, and the grain diameter is 20-50 mm.
Based on the above preparation method, the present application provides 2 typical examples, and provides 1 comparative example, and the process parameters of each example and comparative example are shown in table 1.
Table 1 process parameters of examples 1, 2 and comparative example 1
| LF furnace refining slag/wt% | Iron oxide scale/wt% | Glass water/wt% | Adjuvant (wt.%) | Water/wt% | Ball pressing forming pressure/MPa | |
| Example 1 | 60 | 27 | 3 | 10 | 2 | 40 |
| Example 2 | 55 | 32 | 3 | 10 | 2 | 40 |
| Comparative example 1 | 30 | 50 | 2 | 8 | 2 | 40 |
Related experiments:
the slag agents prepared in examples 1 and 2 and comparative example 1 were added to 3 batches of converter molten steel, respectively, to make steel, the 3 batches of molten steel and the steel slag having the same composition, and the steel slag composition (MCCRVD) slag was as shown in table 2:
TABLE 2 Steel slag composition (wt%)
| TFe | FeO | SiO 2 | Al 2 O 3 | CaO | MgO | MnO | P 2 O 5 | S | CaF 2 |
| 1.17 | 1.18 | 7.14 | 30.5 | 53.63 | 4.65 | 0.16 | 0.028 | 0.23 | 1.31 |
The effect of slag agents on slag melting point, viscosity, and slag pouring time was tested and the results are shown in table 3.
The testing method of the melting point of the steel slag comprises the following steps: the test was performed using projection observation. A slag sample processed into a cylinder is put into an electric furnace, the slag sample is positioned on the optical axis of a light path, and is amplified and imaged by a lens system under the irradiation of a parallel light source, so that the image is clearly amplified and projected on ground glass with a camera bellows. Under the protection of nitrogen, the temperature of the furnace is regulated by an autotransformer, the change of the height of the slag sample in the temperature rising process is observed, and when the temperature of the furnace rises at a certain speed, the temperature of the slag sample rises along with the rise. The thermocouple is arranged at the lower part of the slag sample, the potential value which is canceled by the thermocouple is measured by using a UJ-31 type low potential direct current potential difference meter, and the corresponding temperature is obtained by checking a 'temperature millivolt comparison table' corresponding to the type of the thermocouple. After the slag sample reaches a certain temperature, the slag sample begins to soften, and the temperature when the edge of the slag sample becomes smooth or the height is 5/6 of the original height is defined as the initial melting temperature of the slag sample. The temperature at which the slag sample becomes semicircular or the height is 1/2 of the original height is defined as the melting temperature of the slag sample. The furnace atmosphere, the judgment experience of experimenters and the like have influence on the accuracy of the test.
The testing method of the viscosity of the steel slag comprises the following steps: the viscosity was measured using a spin column method. The high temperature resistant rotor is immersed in the high temperature melt to rotate at a constant speed, the crucible containing the melt is motionless, so that a speed gradient exists between the rotor and the inner wall of the crucible, internal friction force is generated in the melt, the angular speed and torque of a main shaft of the instrument can be accurately measured by the melt physical property measuring instrument and the torque sensor, and then the viscosity of the melt is calculated according to a formula.
TABLE 3 detection results of melting Point, viscosity and time of slag poured into slag tank
| Project | Slag melting point/°c | Flow temperature/. Degree.C |
| Example 1 | 1332 | 1335 |
| Example 2 | 1346 | 1351 |
| Comparative example 1 | 1413 | 1421 |
As can be seen from tables 2 and 3, the method for preparing slag agent for converter by using LF refining slag in examples 1 and 2 can effectively reduce melting point and viscosity of steel slag, shorten pouring time of steel slag into a slag pot, meet steelmaking requirements of converter, realize high-value utilization of LF refining slag and continuous casting iron oxide scale, and reduce manufacturing cost of slag agent for converter.
In comparative example 1, the raw material ratio of the slag agent is different from that of the application, and the prepared slag agent cannot effectively reduce the melting point and viscosity of steel slag and cannot effectively shorten the time for pouring the steel slag into a slag pot.
One or more of the technical schemes of the application has at least the following technical effects or advantages:
(1) The application relates to a method for preparing slag agent for converter by LF furnace refining slag, which uses LF furnace refining slag and iron oxide scale produced in continuous casting process as main raw materials, and the prepared slag agent can meet the requirement of converter steelmaking by adjusting the components and proportion of each raw material, thereby realizing high-value utilization of LF furnace refining slag and continuous casting iron oxide scale and reducing the manufacturing cost of slag agent for converter at the same time, and the application is characterized in that the LF furnace refining slag component takes Ca-Al-Mg as main component, the iron oxide scale main component is iron oxide, and the aluminum slag ash added with part can provide Al and Al 2 O 3 Fluorite provides CaF 2 After the prepared slag agent is added into a converter, the steel slag reacts with Al in the slag agent rapidly and releases a large amount of heat, so that the melting point of the steel slag is reduced, the fluidity of the steel slag is enhanced by utilizing fluoride, meanwhile, calcium, aluminum and magnesium elements are provided, the ternary alkalinity of the steel slag is reduced, and a low-melting-point slag system is formed by primary slag, so that the viscosity of the steel slag is reduced, and the time for pouring the steel slag into a slag tank is shortened; meanwhile, the loss of the converter steel slag can be reduced, and good conditions are provided for slag splashing and furnace protection of the converter, so that the service life of the converter is prolonged.
(2) The application relates to a method for preparing a slag agent for a converter from LF refining slag, which adopts LF refining slag, iron oxide scales generated by continuous casting, auxiliary materials and the like and organizes the slag agent according to a specific proportion, can ensure that after the slag agent is added into the converter, the slag melting point is reduced by quick reaction, a stable ternary alkalinity low-melting-point slag system is formed, good slag viscosity and fluidity are ensured, and the proportion exceeding the range or being lower than the proportion can cause poor slag effect, poor slag viscosity and fluidity, oxygen lance adhesion, influence on blowing and oxygen lance use, slow slag time, prolonged smelting period, reduced steel yield and increased cost.
Finally, it is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. A method for preparing slag agent for converter from LF furnace refining slag, which is characterized by comprising the following steps:
mixing LF refining slag, iron scale, binder, auxiliary materials and water to obtain a mixture;
performing ball pressing molding on the mixture, and drying to obtain a slag agent for the converter;
wherein, in the mixture, the mass fractions of the LF furnace refining slag, the iron scale, the binder, the auxiliary materials and the water are respectively as follows:
LF furnace refining slag: 20-60 percent of iron oxide scale: 5-25% of adhesive: 0-3% of auxiliary materials: 10-30% of water: 3-10%;
the binder is an organic binder or glass water;
the auxiliary materials comprise aluminum slag ash and fluorite, and the mass ratio of the aluminum slag ash to the fluorite is 3:5, a step of;
in the ball pressing forming, the feeding speed is 200-300 kg/min, the pressure is controlled at 20-40Mpa, and the rotating speed is controlled at 30-90 r/min;
the drying is natural airing or drying at 40-100 ℃;
the water content of the slag agent for the converter is less than 0.5%, the strength is more than or equal to 1000N/ball, and the grain diameter is 20-50 mm.
2. The method for preparing a slag agent for a converter from LF refining slag according to claim 1, wherein the steps of mixing the LF refining slag, iron scale, binder, auxiliary materials and water to obtain a mixture specifically comprise: stirring the LF refining slag, the iron scale, the binder, the auxiliary materials and the water for 5-10 min until the mixture is uniformly mixed, and obtaining the mixture.
3. The method for preparing slag agent for converter from LF refining slag according to claim 1, wherein the scale is produced by molten steel continuous casting process.
4. The method for preparing a slag agent for a converter from LF refining slag according to claim 1, wherein the particle size of the LF refining slag and the iron scale is less than 1mm, and the particle size of the auxiliary material is less than 60 meshes.
5. The method for preparing slag agent for converter from LF refining slag as claimed in claim 1, wherein the water is industrial water.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463406A (en) * | 2007-12-20 | 2009-06-24 | 鞍山钢铁集团公司 | Converter fluxing medium with LF refinery cinder as raw material and production method thereof |
| CN112226571A (en) * | 2020-09-28 | 2021-01-15 | 中冶建筑研究总院有限公司 | Method for preparing converter slagging agent by recovering refining slag |
| CN113293256A (en) * | 2021-04-26 | 2021-08-24 | 邢台钢铁有限责任公司 | Application method of aluminum ash |
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- 2022-07-05 CN CN202210790996.5A patent/CN115323118B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463406A (en) * | 2007-12-20 | 2009-06-24 | 鞍山钢铁集团公司 | Converter fluxing medium with LF refinery cinder as raw material and production method thereof |
| CN112226571A (en) * | 2020-09-28 | 2021-01-15 | 中冶建筑研究总院有限公司 | Method for preparing converter slagging agent by recovering refining slag |
| CN113293256A (en) * | 2021-04-26 | 2021-08-24 | 邢台钢铁有限责任公司 | Application method of aluminum ash |
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