CN110714134A - Efficient aluminum-silicon alloy slagging agent and preparation and application thereof - Google Patents
Efficient aluminum-silicon alloy slagging agent and preparation and application thereof Download PDFInfo
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- CN110714134A CN110714134A CN201911093900.4A CN201911093900A CN110714134A CN 110714134 A CN110714134 A CN 110714134A CN 201911093900 A CN201911093900 A CN 201911093900A CN 110714134 A CN110714134 A CN 110714134A
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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
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
Abstract
The invention relates to an efficient aluminum-silicon alloy slag removing agent and preparation and application thereof, belonging to the technical field of aluminum-silicon alloy smelting, and the slag removing agent comprises 40-50 parts of sodium chloride, 20-30 parts of potassium chloride, 15-25 parts of sodium fluosilicate, 2-4 parts of cryolite, 2-4 parts of potassium nitrate and 2-4 parts of calcium fluoride; the preparation method comprises the steps of mixing the raw materials according to the weight part ratio, uniformly mixing, putting the uniformly mixed slag-removing agent into a drying oven for drying, and crushing again after drying; the slag removing agent is suitable for being used in aluminum-silicon alloy with 5-10% of silicon content. The slag removing agent is used, no irritant gas is generated in the production process, the separation effect with the aluminum melt is good, the oxidation burning loss and air suction of the metal melt are effectively prevented, and the gas and slag removal can be realized; the labor safety risk of production workers can be obviously reduced, the environmental protection pressure of enterprises is reduced, and the economic benefit of the enterprises is increased.
Description
Technical Field
The invention belongs to the technical field of aluminum-silicon alloy smelting, and particularly relates to an efficient aluminum-silicon alloy slagging agent and preparation and application thereof.
Background
Melt purification of aluminum alloys is a common problem in the aluminum alloy industry today. Removing gas and impurities in the molten aluminum, reducing the impurity content, and improving the purity of the aluminum melt are key technologies for ensuring the metallurgical quality of the aluminum alloy and are technical problems to be solved urgently in waste aluminum recovery in the strategy of sustainable development. The key of the purification of the aluminum alloy melt is mainly to reduce the gas content and the content of non-metallic inclusions in the melt, and the gas content and the content of the non-metallic inclusions are main judgment indexes for determining the purification degree of the aluminum alloy melt. It can be seen that the requirements for the purity of the aluminium alloy melt are very strict.
In the process of alloy smelting, other impurity elements such as Mg, Cu, Zn and the like are often introduced into the traditional aluminum alloy slag removing agent, and therefore chemical components of the smelted alloy are unstable. In addition, the existing slag removing agent has the problems of oxygen burning loss and air suction of a solution, low tensile strength of a smelted alloy and the like in the use process of alloy smelting.
Therefore, it is necessary to provide a slag removing agent which can effectively prevent oxygen burnout and gettering without introducing impurities such as Mg, Cu, Zn, etc.
Disclosure of Invention
Compared with the traditional aluminum alloy slagging agent, no other impurity alloy elements (such as Mg, Cu and Zn) are introduced in the production process, so that the chemical composition stability of the smelted alloy is effectively ensured. And has a wider temperature range (720-. The labor safety risk of production workers can be obviously reduced, the environmental protection pressure of enterprises is reduced, the production efficiency is improved, and the economic benefit of the enterprises is increased.
In order to realize the purpose, the invention is realized by the following technical scheme:
the aluminum-silicon alloy efficient slag removing agent comprises the following components in parts by weight: 40-50 parts of sodium chloride, 20-30 parts of potassium chloride, 15-25 parts of sodium fluosilicate, 2-4 parts of cryolite, 2-4 parts of potassium nitrate and 2-4 parts of calcium fluoride.
The preparation method of the aluminum-silicon alloy efficient slag removing agent is characterized by comprising the following steps:
a, preparing and uniformly mixing the material of claim 1;
b, drying the uniformly mixed residue removing agent;
and C, crushing the dried material again.
Further, the drying temperature in the step B is 150-.
The application of the aluminum-silicon alloy high-efficiency slag removing agent is characterized in that: the slag removing agent is used in the smelting of aluminum-silicon alloy with silicon content of 5-10% (wt).
Further, in the process of smelting the aluminum-silicon alloy with the silicon content of 5-10%, the product is uniformly put into the aluminum melt, the temperature is controlled at 720-760 ℃, after uniform stirring, loose offwhite scum is generated, and the scum is scraped clean to obtain a clean melt.
The invention has the beneficial effects that:
compared with the traditional aluminum alloy slagging agent, no other impurity alloy elements (such as Mg, Cu and Zn) are introduced in the production process, and the chemical composition stability of the smelted alloy is ensured. Has a wider temperature range (720-. The labor safety risk of production workers can be obviously reduced, the environmental protection pressure of enterprises is reduced, the production efficiency is improved, and the economic benefit of the enterprises is increased.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below to facilitate understanding of the skilled person.
The invention relates to an efficient aluminum-silicon alloy slagging agent, which consists of the following components in parts by mass: 40-50 parts of sodium chloride, 20-30 parts of potassium chloride, 15-25 parts of sodium fluosilicate, 2-4 parts of cryolite, 2-4 parts of potassium nitrate and 2-4 parts of calcium fluoride.
The preparation method of the aluminum-silicon alloy efficient slag removing agent comprises the following steps:
a, preparing and uniformly mixing the material of claim 1;
b, drying the uniformly mixed residue removing agent;
and C, crushing the dried material again.
The drying temperature in the step B is 150-.
The efficient aluminum-silicon alloy slagging agent is used in the smelting of the aluminum-silicon alloy with the silicon content of 5-10% (wt), and specifically comprises the following components: in the process of smelting the aluminum-silicon alloy with the silicon content of 5-10%, the product is uniformly put into an aluminum melt, the adding temperature is controlled at 720-760 ℃, loose offwhite scum is generated after uniform stirring, and the scum is scraped clean to obtain a clean melt.
Example 1
(1) 40 parts of sodium chloride, 30 parts of potassium chloride, 17 parts of sodium fluosilicate, 4 parts of cryolite, 3 parts of potassium nitrate and 4 parts of calcium fluoride.
(2) The raw materials are mixed according to the weight portion ratio, the mixture is mixed evenly by a powder mixer, the evenly mixed slag removing agent is put into a drying oven to be dried for 1 hour at 180 ℃, and the dried slag removing agent is crushed again and packaged by a waterproof plastic bag according to the specified weight after being crushed.
(3) The slag removing agent is suitable for being used in aluminum-silicon alloy with 5-10% of silicon content, the adding temperature is controlled at 720-760 ℃ in the alloy smelting process, the product is uniformly put into an aluminum melt, loose and grey-white scum is generated after the product is uniformly stirred, and the scum is completely removed to obtain a clean melt. The whole process has no irritant gas, and the separation effect of the scum and the aluminum melt is good. The aluminum-silicon alloy produced by the slag removing agent has the tensile strength of more than or equal to 200MPa, the hydrogen content of aluminum melt is less than 0.16ml/100gAl, and the slag content of melt is less than 0.03mm2And the product pinhole degree is improved to 1 grade by the aid of the/kgAl.
Example 2
(1) 50 parts of sodium chloride, 25 parts of potassium chloride, 20 parts of sodium fluosilicate, 2 parts of cryolite, 2 parts of potassium nitrate and 2 parts of calcium fluoride.
(2) The raw materials are mixed according to the weight portion ratio, the mixture is mixed evenly by a powder mixer, the evenly mixed slag removing agent is put into a drying oven to be dried for 1 hour at 180 ℃, and the dried slag removing agent is crushed again and packaged by a waterproof plastic bag according to the specified weight after being crushed.
(3) The slag removing agent is suitable for being used in aluminum-silicon alloy with 5-10% of silicon content, the adding temperature is controlled at 720-760 ℃ in the alloy smelting process, the product is uniformly put into an aluminum melt, loose and grey-white scum is generated after the product is uniformly stirred, and the scum is completely removed to obtain a clean melt. The whole process has no irritant gas, and the separation effect of the scum and the aluminum melt is good. By usingThe aluminum-silicon alloy produced by the slag removing agent has the tensile strength of more than or equal to 200MPa, the hydrogen content of aluminum melt is less than 0.16ml/100gAl, and the slag content of melt is less than 0.03mm2And the product pinhole degree is improved to 1 grade by the aid of the/kgAl.
Example 3
(1) 45 parts of sodium chloride, 22 parts of potassium chloride, 25 parts of sodium fluosilicate, 3 parts of cryolite, 4 parts of potassium nitrate and 3 parts of calcium fluoride.
(2) The raw materials are mixed according to the weight portion ratio, the mixture is mixed evenly by a powder mixer, the evenly mixed slag removing agent is put into a drying oven to be dried for 1 hour at 180 ℃, and the dried slag removing agent is crushed again and packaged by a waterproof plastic bag according to the specified weight after being crushed.
(3) The slag removing agent is suitable for being used in aluminum-silicon alloy with 5-10% of silicon content, the adding temperature is controlled at 720-760 ℃ in the alloy smelting process, the product is uniformly put into an aluminum melt, loose and grey-white scum is generated after the product is uniformly stirred, and the scum is completely removed to obtain a clean melt. The whole process has no irritant gas, and the separation effect of the scum and the aluminum melt is good. The aluminum-silicon alloy produced by the slag removing agent has the tensile strength of more than or equal to 200MPa, the hydrogen content of aluminum melt is less than 0.16ml/100gAl, and the slag content of melt is less than 0.03mm2And the product pinhole degree is improved to 1 grade by the aid of the/kgAl.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. The efficient aluminum-silicon alloy slagging agent is characterized by comprising the following components in parts by weight: 40-50 parts of sodium chloride, 20-30 parts of potassium chloride, 15-25 parts of sodium fluosilicate, 2-4 parts of cryolite, 2-4 parts of potassium nitrate and 2-4 parts of calcium fluoride.
2. The preparation method of the aluminum-silicon alloy high-efficiency slag remover according to claim 1, which is characterized by comprising the following steps:
a, preparing and uniformly mixing the material of claim 1;
b, drying the uniformly mixed residue removing agent;
and C, crushing the dried material again.
3. The application of the aluminum-silicon alloy high-efficiency slag remover according to claim 1 is characterized in that: the slag removing agent is used in the smelting of aluminum-silicon alloy with silicon content of 5-10% (wt).
4. The preparation method of the efficient aluminum-silicon alloy slagging agent according to claim 2, characterized by comprising the following steps: the drying temperature in the step B is 150-.
5. The application of the aluminum-silicon alloy high-efficiency slag remover according to claim 3 is characterized in that: in the process of smelting the aluminum-silicon alloy with the silicon content of 5-10%, the product is uniformly put into an aluminum melt, the adding temperature is controlled at 720-760 ℃, loose offwhite scum is generated after uniform stirring, and the scum is scraped clean to obtain a clean melt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911093900.4A CN110714134A (en) | 2019-11-11 | 2019-11-11 | Efficient aluminum-silicon alloy slagging agent and preparation and application thereof |
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| CN201911093900.4A CN110714134A (en) | 2019-11-11 | 2019-11-11 | Efficient aluminum-silicon alloy slagging agent and preparation and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111286639A (en) * | 2020-03-25 | 2020-06-16 | 昆明冶金研究院有限公司 | Special slagging agent for regenerated aluminum-silicon alloy and preparation method and application thereof |
| CN112522532A (en) * | 2020-11-30 | 2021-03-19 | 中国科学院金属研究所 | Environment-friendly recyclable aluminum alloy slag removing agent and preparation method thereof |
-
2019
- 2019-11-11 CN CN201911093900.4A patent/CN110714134A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 向凌霄等: "《原铝及其合金的熔铸生产问答》", 28 February 2011, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111286639A (en) * | 2020-03-25 | 2020-06-16 | 昆明冶金研究院有限公司 | Special slagging agent for regenerated aluminum-silicon alloy and preparation method and application thereof |
| CN112522532A (en) * | 2020-11-30 | 2021-03-19 | 中国科学院金属研究所 | Environment-friendly recyclable aluminum alloy slag removing agent and preparation method thereof |
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