CN113737042B - Flux for smelting alloy and its preparing process and application - Google Patents
Flux for smelting alloy and its preparing process and application Download PDFInfo
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- CN113737042B CN113737042B CN202111116402.4A CN202111116402A CN113737042B CN 113737042 B CN113737042 B CN 113737042B CN 202111116402 A CN202111116402 A CN 202111116402A CN 113737042 B CN113737042 B CN 113737042B
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- flux
- alloy
- acid compound
- weak acid
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a flux for smelting alloy, which comprises 60-70 wt% of CaF 2 15 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentage of the components is 100 percent; wherein the pH value of the weak acid compound after being heated and dissolved is 4-7. The manufacturing method is to mix the components of the flux evenly to obtain the required flux. When the flux is applied, the formula and the dosage of the flux can be adjusted according to different aluminum alloys, nickel alloys and titanium alloys. The flux can be matched with the flux which is suitable for the furnace lining operating environment according to the components in the smelting raw materials, and the feeding type of the flux is determined and controlled according to the condition of slag generated during smelting to adjust the feeding material; the added flux can reduce reoxidation of the alloy, easily absorb inclusions, and minimize reaction loss with the lining material, and can improve the quality of the manufactured steel product.
Description
Technical Field
The invention relates to the technical field of smelting alloy, in particular to a smelting agent of smelting alloy capable of being added into a smelting furnace to improve a furnace lining, a manufacturing method and application thereof.
Background
When the smelting alloy is produced, various impurities produced during smelting react with a used furnace lining, so that the phenomena of nodulation and melting loss are generated, and hidden troubles are brought to the components and the safety production of the smelting alloy. Meanwhile, the use time is shortened, and the production plan is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a fusing agent which can be added into a smelting furnace to improve the smelting alloy of a furnace lining, a manufacturing method and application thereof.
The invention aims to solve the problems by the following technical scheme:
a flux for melting an alloy, characterized in that: the component of the flux is 60-70 wt% of CaF 2 15 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; wherein the pH value of the weak acid compound after being heated and dissolved is 4-7.
The average granularity of the fusing agent is 0.053 mm-0.150 mm.
The CaF 2 The particle size of (A) is 0.053 mm-0.106 mm.
The granularity of the CaO is 0.075 mm-0.150 mm.
The particle size of the weak acid compound is 0.075 mm-0.150 mm.
The weak acid compound is one or a combination of more of citric acid, malic acid and tartaric acid.
Method for manufacturing flux for smelting alloyThe method is characterized in that: 60 to 70 weight percent of CaF with the granularity of 0.053 to 0.106mm 2 15 to 20 weight percent of CaO with the granularity of 0.075 to 0.106mm, and 15 to 20 weight percent of weak acid compound with the granularity of 0.075 to 0.106mm are prepared according to the proportion of 100 percent and evenly mixed to prepare the required flux.
The application of the flux for smelting the alloy is characterized in that: when the flux is used for smelting aluminum alloy, the component of the flux is 60-61 wt% of CaF 2 19 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; wherein the pH value of the weak acid compound after being heated and dissolved is 5-5.5; the adding amount of the fluxing agent is 0.1-0.5% of the smelting amount in the furnace when the alloy is smelted.
The application of the flux for smelting the alloy is characterized in that: when the flux is used for smelting nickel-based alloy, the component of the flux is CaF with the weight percentage of 65-70 percent 2 15 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; wherein the pH value of the weak acid compound after being heated and dissolved is 4-7; the adding amount of the fluxing agent in the alloy smelting process is 0.1-0.2% of the smelting amount in the furnace.
The application of the flux for smelting the alloy is characterized in that: when the flux is used for smelting aluminum alloy, the component of the flux is CaF with 68wt% -70 wt% 2 15 to 18 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight content percentages of the components is 100 percent; wherein the pH value of the weak acid compound after being heated and dissolved is 5-7; the adding amount of the fluxing agent in the alloy smelting process is 0.5-1.0% of the smelting amount in the furnace.
Compared with the prior art, the invention has the following advantages:
the flux can be matched with the flux which is suitable for the furnace lining operating environment according to the components in the smelting raw materials, and the feeding type of the flux is determined and controlled according to the condition of slag generated during smelting to adjust the feeding material; the added flux can reduce reoxidation of the alloy, easily absorb impurities and minimize reaction loss with furnace lining materials, and can improve the quality of the manufactured steel products.
Detailed Description
The present invention will be further described with reference to the following examples.
In a smelting furnace, the following oxidation reactions generally take place: 4Al +3O 2 =2Al 2 O 3 、Si+O 2 =SiO 2 、2Mg+O 2 =2MgO、3Fe+2O 2 =Fe 3 O 4 、4P+5O 2 =2P 2 O 5 、Ti+O 2 =TiO 2 、2Mn+O 2 =2MnO, and other reactions: ti + C = TiC, 4Al +3SiO 2 =3Si+2Al 2 O 3 . The formulated flux generally needs to be specifically related to the specific composition of the flux depending on the reaction product.
The flux for smelting alloy consists of CaF in 60-70 wt% and granularity of 0.053-0.106 mm 2 15 to 20 weight percent of CaO with the granularity of 0.075 to 0.106mm, and 15 to 20 weight percent of weak acid compound with the granularity of 0.075 to 0.106mm, wherein the sum of the weight percent of the components is 100 percent; wherein the weak acid compound is one or more of citric acid, malic acid, and tartaric acid, and the pH value of the weak acid compound is 4-7 after heated and dissolved.
Example one melting of aluminum-based alloy
The composition of the flux used was: 60 to 61 weight percent of CaF 2 19 to 20 weight percent of CaO, 15 to 20 weight percent of weak acid compound (pH value is 5 to 5.5), and the sum of the weight percentage of the components is 100 percent; the adding usage proportion is 0.1-0.5% of the smelting amount in the furnace during smelting.
When an induction furnace is adopted to smelt the aluminum-manganese alloy, the dosage of aluminum and manganese in the furnace is 2400 kg, and the used fluxing agent is 61wt% of CaF 2 20wt% of CaO and 19wt% of malic acid (the pH value is 5), 4.8 kg of fusing agent is added during smelting, the fusing agent accounts for 0.2% of the adding amount of the alloy, the fusing agent is added while feeding during use, the fusing agent is also added after the feeding is finished, and after the alloy tapping temperature is reached, the slag on the surface is fished out and then the alloy is tapped.
Example two melting of a nickel-based alloy
The composition of the flux used was: 65wt% -70 wt% of CaF 2 15 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound (pH value is 4 to 7), wherein the sum of the weight percentages of the components is 100 percent; the adding usage proportion is 0.1-0.2% of the smelting amount in the furnace during smelting.
When an induction furnace is adopted to smelt the ferronickel alloy, the adding amount of ferronickel in the furnace is 3000 kilograms, and the used fusing agent comprises CaF with the weight percent of 65 percent 2 20wt% of CaO and 15wt% of tartaric acid (the pH value is 4), 3 kg of flux which accounts for 0.1% of the adding amount of the alloy is added during smelting, the flux is added while feeding, the flux is also added after the flux is added, the slag is discharged from the furnace after the alloy tapping temperature is reached, and the surface slag is cleaned after the alloy is cooled.
Example III melting of titanium-based alloy
The composition of the flux used was: 68-70 wt% of CaF 2 15 to 18 weight percent of CaO and 15 to 20 weight percent of weak acid compound (pH value is 5 to 7), wherein the sum of the weight percentages of the components is 100 percent; the adding usage proportion is 0.5-1.0% of the smelting amount in the furnace during smelting.
When the ferrotitanium alloy is smelted by adopting an induction furnace, the ferrotitanium adding amount in the furnace is 1000 kg, and the used fusing agent comprises 70wt% of CaF 2 15wt% of CaO and 15wt% of malic acid (the pH value is 5), 8 kg of fusing agent is added during smelting, the fusing agent accounts for 0.8% of the adding amount of the alloy, the fusing agent is added while feeding during use, the fusing agent is also added after the feeding is finished, and after the alloy tapping temperature is reached, the slag on the surface is fished out and then the alloy is discharged.
The flux can be matched with the flux which is suitable for the furnace lining operating environment according to the components in the smelting raw materials, and the feeding type of the flux is determined and controlled according to the condition of slag generated during smelting to adjust the feeding material; the added flux can reduce reoxidation of the alloy, easily absorb inclusions, and minimize reaction loss with the lining material, and can improve the quality of the manufactured steel product.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (11)
1. A flux for smelting aluminum-manganese alloy is characterized in that: the component of the flux is 60wt% -61 wt% of CaF 2 19 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; the weak acid compound is one or a combination of more of citric acid, malic acid and tartaric acid; wherein the pH value of the weak acid compound after being heated and dissolved is 5-5.5.
2. A flux for smelting ferronickel alloy is characterized in that: the components of the fusing agent are 65-70 wt% of CaF 2 15 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; the weak acid compound is one or a combination of more of citric acid, malic acid and tartaric acid; wherein the pH value of the weak acid compound after being heated and dissolved is 4-7.
3. A flux for smelting ferrotitanium alloy is characterized in that: the component of the flux is 68-70 wt% of CaF 2 15 to 18 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; the weak acid compound is one or a combination of more of citric acid, malic acid and tartaric acid; wherein the pH value of the weak acid compound after being heated and dissolved is 5-7.
4. A flux according to claim 1, 2 or 3, characterized in that: the average particle size of the flux is 0.053 mm-0.150 mm.
5. The flux according to claim 4, wherein: the CaF 2 The particle size of (A) is 0.053 mm-0.106 mm.
6. The flux according to claim 4, wherein: the granularity of the CaO is 0.075 mm-0.150 mm.
7. A flux according to claim 1, 2 or 3, characterized in that: the particle size of the weak acid compound is 0.075 mm-0.150 mm.
8. A method for producing a flux, characterized by comprising: CaF with the granularity of 0.053mm to 0.106mm 2 CaO with the particle size of 0.075 mm-0.106 mm, and a weak acid compound with the particle size of 0.075 mm-0.106 mm, wherein the weak acid compound is one or a combination of several of citric acid, malic acid and tartaric acid, and is configured and uniformly mixed according to the weight percentage of the components in the claim 1, the claim 2 or the claim 3; thus obtaining the required flux.
9. The application of the flux for smelting the aluminum-manganese alloy is characterized in that: when the flux is used for smelting aluminum-manganese alloy, the component of the flux is 60-61 wt% of CaF 2 19 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; wherein the weak acid compound is one or more of citric acid, malic acid, and tartaric acid, and the pH value of the weak acid compound is 5-5.5 after heated and dissolved; the adding amount of the flux is 0.1-0.5% of the melting amount in the furnace when the alloy is melted, the flux is added while feeding, the flux is also added after the flux is added, and the slag on the surface is fished out after the alloy tapping temperature is reached.
10. The application of the flux for smelting the nickel-iron alloy is characterized in that: when the flux is used for smelting nickel-based alloy, the component of the flux is CaF with the weight percentage of 65-70 percent 2 15 to 20 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; wherein the weak acid compound is one or more of citric acid, malic acid, and tartaric acid, and the pH value of the weak acid compound is 4-7 after heated and dissolved; the adding amount of the flux is 0.1-0.2% of the melting amount in the furnace when the alloy is melted, the flux is added while feeding, the flux is also added after the flux is added, the slag is discharged after the alloy discharging temperature is reached,and cleaning surface slag after the alloy is cooled.
11. The application of the flux for smelting the ferrotitanium alloy is characterized in that: when the flux is used for smelting titanium alloy, the flux comprises 68-70 wt% of CaF 2 15 to 18 weight percent of CaO and 15 to 20 weight percent of weak acid compound, wherein the sum of the weight percentages of the components is 100 percent; wherein the weak acid compound is one or more of citric acid, malic acid, and tartaric acid, and the pH value of the weak acid compound is 5-7 after heated and dissolved; the adding amount of the flux is 0.5-1.0% of the melting amount in the furnace when the alloy is melted, the flux is added while feeding, the flux is also added after the flux is added, and the slag on the surface is fished out after the alloy tapping temperature is reached.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111116402.4A CN113737042B (en) | 2021-09-23 | 2021-09-23 | Flux for smelting alloy and its preparing process and application |
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| CN202111116402.4A CN113737042B (en) | 2021-09-23 | 2021-09-23 | Flux for smelting alloy and its preparing process and application |
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| CN113737042A CN113737042A (en) | 2021-12-03 |
| CN113737042B true CN113737042B (en) | 2022-08-02 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394449A (en) * | 1972-12-01 | 1975-05-14 | Reading Alloys | Master alloy for titanium base alloys |
| JP2555595B2 (en) * | 1987-04-24 | 1996-11-20 | 住友金属工業株式会社 | Ultra-clean steel melting method |
| RU2108396C1 (en) * | 1997-01-08 | 1998-04-10 | Открытое акционерное общество "Западно-Сибирский металлургический комбинат" | Method of pig iron desulfurization in induction furnace with acid lining |
| CN101054613A (en) * | 2007-05-09 | 2007-10-17 | 北京科技大学 | Fluxing agent for prerefining molten steel during tapping process |
| CN102643976B (en) * | 2011-02-21 | 2013-10-30 | 宝山钢铁股份有限公司 | Composite additive for producing nickel-iron particles by using laterite, and application method thereof |
| CN102747194B (en) * | 2012-07-18 | 2014-10-15 | 河南通宇冶材集团有限公司 | Fluoride-free environmental-friendly slag dilution solvent for electric furnace, converter and medium frequency furnace and preparation method of fluoride-free environmental-friendly slag dilution solvent |
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