CN115369214A - Efficient slagging agent and preparation method and application thereof - Google Patents
Efficient slagging agent and preparation method and application thereof Download PDFInfo
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- CN115369214A CN115369214A CN202211134788.6A CN202211134788A CN115369214A CN 115369214 A CN115369214 A CN 115369214A CN 202211134788 A CN202211134788 A CN 202211134788A CN 115369214 A CN115369214 A CN 115369214A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 42
- 239000002910 solid waste Substances 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000012065 filter cake Substances 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 4
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract description 36
- 239000010436 fluorite Substances 0.000 abstract description 15
- 229910001634 calcium fluoride Inorganic materials 0.000 description 21
- 239000002893 slag Substances 0.000 description 7
- 229910016569 AlF 3 Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000013072 incoming material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 229910001610 cryolite Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- C21C5/36—Processes yielding slags of special composition
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of steel smelting slagging agents, in particular to a high-efficiency slagging agent and a preparation method and application thereof, wherein the high-efficiency slagging agent comprises a component A with the granularity of 200-500 mu m and a component B with the granularity of 10-100mm, and the mass ratio of the component A to the component B is 0.3-0.8; wherein, the component A comprises a first solid waste and a first aluminum source, and the component B comprises a second solid waste and a second aluminum source; the first solid waste and the second solid waste are electrolytes obtained by electrolyzing aluminum, and the first solid waste and the first aluminum source enable the composition of the component A to meet the following requirements: calculated by the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF) 3 ×0.5+MgF×0.2)]The value of/CaF is between 20 and 35. The high-efficiency slagging agent can fully utilize electrolyte solid waste obtained by electrolyzing aluminum, can completely replace fluorite, can remarkably promote slagging in application, and simultaneously reduces the using amount of the high-efficiency slagging agent.
Description
Technical Field
The invention relates to the technical field of steel smelting slag melting agents, and particularly relates to an efficient slag melting agent and a preparation method and application thereof.
Background
Fluorite is a mineral whose main component is calcium fluoride (CaF) 2 ) The method is widely applied to the fields of aerospace, aviation, medicine, electronics, electric power, machinery, atomic energy and the like. With the continuous development of science and technology and national economy, fluorite has become an important mineral raw material in modern industry, and many developed countries have reserved it as strategic material.
A certain amount of fluorite is required to be added as a slagging fluxing agent during early slagging in the steel refining process, which is a conventional operation process of steel mills at home and abroad. However, in recent years, the price of fluorite is increased to a certain extent due to the influence of shortage of fluorite resources, and the production cost of steel-making enterprises is increased. Therefore, the reduction of the slag amount is an important measure for reducing the production cost of clean steel, and the reduction of the slag amount and the iron loss in the steelmaking process achieve the purpose of reducing the smelting cost. Therefore, the search for the slagging agent for steel refining, which has low cost, quick slagging and strong slagging capacity, is an important subject in the steel smelting industry.
In the production process of electrolytic aluminum, a large amount of solid waste product electrolyte is generated at the same time, the main component of the electrolyte is cryolite, and in general, an electrolytic aluminum plant takes out the electrolyte and stacks the electrolyte as industrial solid waste, so that a large amount of resource waste is caused, and serious environmental pollution is caused.
Therefore, there is a need in the art for a highly efficient slagging agent that can replace fluorite and make full use of solid wastes.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the high-efficiency slagging agent, the preparation method and the application thereof.
In order to achieve the above object, the first aspect of the present invention provides a high efficiency slag melting agent, comprising a component A with a particle size of 200-500 μm and a component B with a particle size of 10-100mm, wherein the mass ratio of the component A to the component B is 0.3-0.8; wherein, the component A comprises a first solid waste and a first aluminum source, and the component B comprises a second solid waste and a second aluminum source; the first solid waste and the second solid waste are electrolytes obtained by electrolyzing aluminum, and
the first solid waste and the first aluminum source are such that the composition of component a satisfies: based on the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF + 3 ×0.5+MgF×0.2)]The value of/CaF is between 20 and 35;
the second solid waste and the second aluminum source are such that the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is between 0.2 and 0.8.
In a preferred embodiment, the first solid waste and the first aluminum source are such that the composition of component a satisfies: based on the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF + 3 ×0.5+MgF×0.2)]The value of/CaF is between 24 and 28.
In a preferred embodiment, the second solid waste and the second aluminum source are such that the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is between 0.4 and 0.6.
In a preferred embodiment, the first and second aluminum sources are each independently alumina.
In another preferred embodiment, the first and second aluminum sources are each independently alumina and aluminum ash.
Wherein preferably, the particle size of the component A is 200-350 μm, and the particle size of the component B is 70-100mm.
Preferably, the mass ratio of component a to component B is 0.3 to 0.5.
In a second aspect, the preparation method of the high-efficiency slagging agent of the first aspect is provided, which comprises the following steps:
(1) Respectively preparing a component A and a component B according to the required components;
(2) Mixing the component A, the component B and water, and heating and stirring;
(3) Then filtering the mixture in a plate-and-frame filter to obtain filtrate and filter cakes;
(4) And airing and ball-pressing the filter cake to obtain the high-efficiency slagging agent.
Preferably, the method further comprises: and (3) refining and removing impurities from the filtrate to prepare the industrial sodium chloride and lithium carbonate.
In a third aspect, the application of the high-efficiency slagging agent in steel smelting is provided, and the addition amount of the high-efficiency slagging agent is 0.1-0.7 kg/ton iron or ton steel.
Compared with the prior art, the invention takes a large amount of solid electrolyte waste generated in the process of electrolyzing aluminum as a raw material, can form a high-efficiency slagging agent with specific synergistic components through specific component proportion, not only has high slagging and slagging speed, but also can completely replace fluorite, and can effectively reduce the lime melting point in the process of steelmaking when being used for smelting steel. The similar products in the market often emit white smoke in the using process due to over high sodium content, so that the use is influenced. The high-efficiency slagging agent product can control the sodium content to be in a reasonable range, and improves the use efficiency. And in the preferred processing, two byproducts, namely industrial sodium chloride and lithium carbonate, can be generated.
The high-efficiency slagging agent has low melting point (about 1100 ℃) and reasonable price, and can reduce the consumption by 35 to 50 percent and reduce the cost after replacing fluorite with the product.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, each range between its endpoints and individual point values, and each individual point value can be combined with each other to give one or more new numerical ranges, and such numerical ranges should be construed as specifically disclosed herein.
The first aspect of the invention provides a high-efficiency slagging agent, which comprises a component A with the granularity of 200-500 mu m and a component B with the granularity of 10-100mm, wherein the mass ratio of the component A to the component B is 0.3-0.8; wherein, the component A comprises a first solid waste and a first aluminum source, and the component B comprises a second solid waste and a second aluminum source; the first solid waste and the second solid waste are electrolytes obtained by electrolyzing aluminum, and
the first solid waste and the first aluminum source are such that the composition of component a satisfies: based on the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF + 3 ×0.5+MgF×0.2)]The value of/CaF is between 20 and 35;
the second solid waste and the second aluminum source are such that the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is between 0.2 and 0.8.
The main component of the electrolyte solid waste obtained by electrolyzing the aluminum is cryolite, and the cryolite can be used in the invention.
In a preferred embodiment, the first fastener is a screw fastenerThe waste and the first aluminium source are such that the composition of component a satisfies: based on the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF + 3 ×0.5+MgF×0.2)]The value of/CaF is between 24 and 28. The preferable scheme is more beneficial to promoting slagging and reducing the using amount of the high-efficiency slagging agent.
In a preferred embodiment, the second solid waste and the second aluminum source are such that the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is between 0.4 and 0.6. The preferable scheme is more beneficial to promoting slagging and reducing the using amount of the high-efficiency slagging agent.
The first and second aluminum sources may be the same or different.
In a preferred embodiment, the first and second aluminum sources are each independently alumina.
In another preferred embodiment, the first and second aluminum sources are each independently alumina and aluminum ash. The aluminum ash is added as another solid waste, so that the utilization rate of the solid waste can be promoted.
Wherein preferably, the particle size of the component A is 200-350 μm, and the particle size of the component B is 70-100mm. The preferable scheme is more beneficial to promoting slagging and reducing the using amount of the high-efficiency slagging agent.
Preferably, the mass ratio of component a to component B is 0.3 to 0.5. The preferable scheme is more beneficial to promoting slagging and reducing the using amount of the high-efficiency slagging agent.
In a second aspect, the preparation method of the high-efficiency slagging agent of the first aspect is provided, which comprises the following steps:
(1) Respectively preparing a component A and a component B according to the required components;
(2) Mixing the component A, the component B and water, and heating and stirring; preferably heating at 30-55 deg.C, and stirring for 25-60min;
(3) Then filtering in a plate-and-frame filter to obtain filtrate and filter cake;
(4) And airing and ball-pressing the filter cake to obtain the high-efficiency slagging agent.
Preferably, the method further comprises: and (3) refining and removing impurities from the filtrate to prepare the industrial sodium chloride and lithium carbonate.
In a third aspect, the application of the high-efficiency slagging agent in steel smelting is provided, and the addition amount of the high-efficiency slagging agent is 0.1-0.7 kg/ton of iron or ton of steel. The high-efficiency slagging agent can be added in the smelting process of a converter, a refining furnace and the like to assist in slagging and slagging.
The present invention will be described in detail below by way of examples.
Example 1
The high-efficiency slagging agent consists of a component A with the granularity of 200-350 mu m and a component B with the granularity of 70-100mm, wherein the mass ratio of the component A to the component B is 0.5; wherein, the component A and the component B both consist of electrolyte obtained by electrolyzing aluminum and aluminum oxide. And the composition of component A satisfies: based on the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF + 3 ×0.5+MgF×0.2)]The value of/CaF is 24.8; the content of NaF is 50%, the content of KF is 1%, and AlF 3 15%, 10% and 1% of CaF. The composition of the component B satisfies the following conditions: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is 0.6; the content of NaF is 30 percent, the content of KF is 1 percent, and AlF 3 The content of (A) is 10%, the content of MgF is 8%, and the content of CaF is 1%.
The preparation method comprises the following steps:
(1) Respectively preparing a component A and a component B according to the required components;
(2) Mixing the component A, the component B and water, and heating and stirring at 50 ℃ for 30min;
(3) Then filtering the mixture in a plate-and-frame filter to obtain filtrate and filter cakes;
(4) And drying and ball-pressing the filter cake to obtain the high-efficiency slagging agent.
And (3) feeding molten steel tapped from the converter into a station LF, adding 3kg/t of steel of lime and 2kg/t of steel of a slag modifier in the feeding and slagging process, simultaneously adding 0.6kg/t of steel of an efficient slag modifier, and continuously refining after transmitting electricity for about 3 minutes by using high power until the molten steel is qualified and is discharged from the station. The comparison result with the condition of no addition of the high-efficiency slagging agent under the same incoming material shows that the slagging speed is improved by 45 percent, and the addition amount of the high-efficiency slagging agent is reduced by 40 percent compared with the addition amount of fluorite.
Example 2
The procedure is as in example 1, except that the composition of component A is different, in particular the composition of component A satisfies: calculated by the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF) 3 ×0.5+MgF×0.2)]The value of/CaF is 31.5; 60% of NaF, 5% of KF and AlF 3 The content of (b) is 20%, the content of MgF is 10%, and the content of CaF is 1%.
Accordingly, the comparison result of the present example with the same incoming material without adding the high efficiency slagging agent shows that the slagging speed is improved by 38%, and the addition amount of the high efficiency slagging agent is reduced by 35% compared with the addition amount of fluorite.
Example 3
The procedure is as in example 1, except that the composition of component B is different, and in particular the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is 0.76; the content of NaF is 40%, the content of KF is 2%, and AlF 3 The content of (A) is 20%, the content of MgF is 10%, and the content of CaF is 2%.
Accordingly, the comparison result of the present example with the same material feeding condition without adding the high efficiency slagging agent shows that the slagging speed is improved by more than 40%, and the adding amount of the high efficiency slagging agent is reduced by more than 32% compared with the adding amount of fluorite.
Example 4
The procedure is as in example 1, except that the particle size of component A is from 400 to 500. Mu.m, and the particle size of component B is from 10 to 30mm.
Accordingly, the comparison result of the present example with the same material feeding condition without adding the high-efficiency slagging agent shows that the slagging speed is improved by more than 35%, and the adding amount of the high-efficiency slagging agent is reduced by more than 30% compared with the adding amount of fluorite.
Comparative example 1
The procedure is as in example 1, except that the composition of component A is different, in particular the composition of component A satisfies: calculated by the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF) 3 ×0.5+MgF×0.2)]The value of/CaF is 9.6; the content of NaF is 55 percent, the content of KF is 1 percent, and AlF 3 Content of (2) 20%, content of MgF 10%, content of CaFThe content is 3%.
Correspondingly, the comparison result of the comparative example and the comparison result of the comparative example without adding the high-efficiency slagging agent under the same incoming material condition shows that the slagging speed is improved by 10 percent, and the addition amount of the high-efficiency slagging agent is reduced by 8 percent compared with that of fluorite.
Comparative example 2
The procedure is as in example 1, except that the composition of component B is different, and in particular the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is 1; the content of NaF is 30 percent, the content of KF is 2 percent, and AlF 3 The content of (b) is 20%, the content of MgF is 10%, and the content of CaF is 2%.
Correspondingly, the comparison result of the comparative example and the comparison result of the comparative example without adding the high-efficiency slagging agent under the same incoming material condition shows that the slagging speed is improved by more than 7 percent, and the addition amount of the high-efficiency slagging agent is reduced by more than 12 percent compared with that of fluorite.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. The high-efficiency slagging agent is characterized by comprising a component A with the granularity of 200-500 mu m and a component B with the granularity of 10-100mm, wherein the mass ratio of the component A to the component B is 0.3-0.8; wherein, the component A comprises a first solid waste and a first aluminum source, and the component B comprises a second solid waste and a second aluminum source; the first solid waste and the second solid waste are electrolytes obtained by electrolyzing aluminum, and
the first solid waste and the first aluminum source are such that the composition of component A satisfies: based on the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF + 3 ×0.5+MgF×0.2)]The value of/CaF is between 20 and 35;
the second solid waste and the second aluminum source are such that the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 Value of + MgF)/(NaF + CaF)In the range of 0.2-0.8.
2. The high-efficiency slagging agent according to claim 1, wherein the first solid waste and the first aluminum source are such that the composition of component A satisfies: calculated by the mass content of the compound, [ ((NaF + KF) x 0.3+ AlF) 3 ×0.5+MgF×0.2)]The value of/CaF is between 24 and 28.
3. The high-efficiency slagging agent according to claim 1, wherein the second solid waste and the second aluminum source are such that the composition of component B satisfies: based on the mass content of the compound, (KF + AlF) 3 The value of + MgF)/(NaF + CaF) is between 0.4 and 0.6.
4. The high-efficiency slagging agent according to claim 1, wherein the first and second aluminum sources are each independently alumina.
5. The high-efficiency slagging agent according to claim 1, wherein the first and second aluminum sources are each independently alumina and aluminum ash.
6. The high-efficiency slagging agent according to claim 1, wherein the particle size of the component A is 200-350 μm, and the particle size of the component B is 70-100mm.
7. The efficient slagging agent according to claim 1, wherein the mass ratio of the component A to the component B is 0.3-0.5.
8. The preparation method of the high-efficiency slagging agent according to any one of claims 1 to 7, comprising the following steps:
(1) Respectively preparing a component A and a component B according to the required components;
(2) Mixing the component A, the component B and water, and heating and stirring;
(3) Then filtering in a plate-and-frame filter to obtain filtrate and filter cake;
(4) And airing and ball-pressing the filter cake to obtain the high-efficiency slagging agent.
9. The method of claim 8, further comprising: and (3) refining and removing impurities from the filtrate to prepare the industrial sodium chloride and lithium carbonate.
10. The use of the high-efficiency slagging agent according to any of claims 1 to 7 in steel smelting, wherein the high-efficiency slagging agent is added in an amount of 0.1 to 0.7 kg/ton of iron or ton of steel.
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| KR100759862B1 (en) * | 2006-06-30 | 2007-09-18 | 요업기술원 | Steel refinery flux composition of low temperature form |
| CN102864284A (en) * | 2012-09-26 | 2013-01-09 | 刘跃 | Slagging agent for ferrous metallurgy |
| RU2732027C1 (en) * | 2019-07-31 | 2020-09-10 | Общество с ограниченной ответственностью "ИЗОМЕТИКА" (ООО "ИЗОМЕТИКА") | Refining flux for out of furnace finishing of steel |
| CN111334627A (en) * | 2020-03-20 | 2020-06-26 | 莱芜钢铁冶金生态工程技术有限公司 | Metallurgy fluorine-containing slagging agent and preparation method and application thereof |
| CN114703339A (en) * | 2022-03-24 | 2022-07-05 | 新疆八钢佳域工业材料有限公司 | Novel slagging agent for refining furnace |
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