CN109182805A - A kind of method of smelting of aluminium - Google Patents
A kind of method of smelting of aluminium Download PDFInfo
- Publication number
- CN109182805A CN109182805A CN201811055713.2A CN201811055713A CN109182805A CN 109182805 A CN109182805 A CN 109182805A CN 201811055713 A CN201811055713 A CN 201811055713A CN 109182805 A CN109182805 A CN 109182805A
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- China
- Prior art keywords
- aluminum
- molten aluminum
- smelting
- waste material
- nitrogen
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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
-
- 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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- 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)
Abstract
The present invention relates to the preparation technical field of aluminum products, in particular to a kind of method of smelting of aluminium chooses the aluminum water of smelting completion；Choose magnesium ingot；Aluminum waste material is put into smelting furnace sky furnace, heated crucible dissolves aluminum waste material, obtains the first molten aluminum；Nitrogen valve is opened, after being passed through nitrogen into the second molten aluminum, intermediate alloy is added into the second molten aluminum and opens magnetic agitation；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison is less than 0.05%；After the detection of second molten aluminum is qualified, thermometric is carried out to smelting metal, is then come out of the stove；Can purification, removal of impurities, degasification and slagging-off to aluminum waste material play better effect, keep the filtrate purity melted out higher.
Description
Technical field
The present invention relates to the preparation technical field of aluminum products, in particular to a kind of method of smelting of aluminium.
Background technique
Aluminium has special chemistry, physical characteristic, and not only light-weight, quality is hard but also has good ductility, leads
Electrical property, thermal conductivity, heat resistance and resistance to nuclear radiation are the important foundation raw material of the national economic development.Aluminium product include aluminium sheet,
Aluminium bar etc., aluminium bar are that one of product is most widely used in numerous aluminium products, and the founding of aluminium bar includes ingredient, melting, casting
Etc. processes.Wherein, melting refers to that the raw material that will be prepared are added in smelting furnace by technique requirement and melts, and passes through degasification, slagging-off
Refining means will melt intracorporal miscellaneous slag, gas and effectively remove to obtain the process of higher degree molten aluminum；In the production process of aluminium bar
In, it generally requires to recycle aluminum waste material, and the superiority and inferiority of aluminium smelting technology directly influences the quality of aluminium bar quality.
Currently, unreasonable, the problems such as being not thorough of removing the gred to there are smelting temperature settings in the fusion process of aluminium, after causing
The aluminium bar that phase casts out is second-rate.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of method of smelting of aluminium.
The technical solution of the present invention is as follows:
A kind of method of smelting of aluminium, it is characterised in that: the following steps are included:
Step 1: it chooses smelting completion and meets aluminum water as defined in GB/T3190-2008；Magnesium ingot: purity is chosen 99
.8% above magnesium ingot；Magnesium ingot quality meets GB/T3499 standard regulation；Intermediate alloy: alusil alloy is chosen, wherein Al, Si
Content is 11~12-50；Al-Ti-B alloy, wherein Al, Ti, B content 85-5-2；Aluminum waste material: aluminium content is greater than 60%
Aluminum products reclaimed materials；Refining agent: refining agent water content is not greater than 1%, is incorporated by 0.5-1kg/ tons；
Aluminum waste material: 1) being put into smelting furnace sky furnace by step 2, then pours into aluminum water until aluminum water floods aluminum waste material, heated crucible
Aluminum waste material is dissolved, the first molten aluminum is obtained；2) slagging agent of 5-10kg is added into the first molten aluminum, and in the first temperature of aluminum liquid
Magnesium ingot is added when being 720-730 DEG C, obtains the second molten aluminum, the weight ratio of magnesium ingot and the first molten aluminum is 1:180~200；
Step 3: opening nitrogen valve, is passed through nitrogen and refining agent, nitrogen pressure .3- to furnace hearth by refining pipe
0.76MPa keeps refining pipe mobile in furnace hearth, fast moves within first 5 minutes and guarantee the second molten aluminum magic flower, then nitrogen is subtracted
Pressure makes bubble apart from liquid level 60-70mm, refines 30-40 minutes, after being passed through nitrogen into the second molten aluminum, to the second molten aluminum
Middle addition intermediate alloy simultaneously opens magnetic agitation；
Step 4: clawing the liquid level dross of the second molten aluminum after detection refining, and be sampled to the second molten aluminum, will when sampling
At the sample spoon center suitable for reading for turning down and stretching to smelting furnace, after stirring the second molten aluminum, rolls up taking-up sample liquid for sample spoon is suitable for reading, use
Secondary method of comparison detects sample liquid；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison
Less than 0 .05%；
Step 5: after the detection of the second molten aluminum is qualified, carrying out thermometric to smelting metal, when reaching the casting temperature upper limit needed for alloy into
Row is stood, then time of repose 40-60min comes out of the stove.
The invention has the benefit that
Can purification, removal of impurities, degasification and slagging-off to aluminum waste material play better effect, keep the filtrate purity melted out higher.
Specific embodiment
Specific embodiments of the present invention will be further explained below:
A kind of method of smelting of aluminium, comprising the following steps:
Step 1: it chooses smelting completion and meets aluminum water as defined in GB/T3190-2008；Magnesium ingot: purity is chosen 99
.8% above magnesium ingot；Magnesium ingot quality meets GB/T3499 standard regulation；Intermediate alloy: alusil alloy is chosen, wherein Al, Si
Content is 11~12-50；Al-Ti-B alloy, wherein Al, Ti, B content 85-5-2；Aluminum waste material: aluminium content is greater than 60%
Aluminum products reclaimed materials；Refining agent: refining agent water content is not greater than 1%, is incorporated by 0.5-1kg/ tons；
Aluminum waste material: 1) being put into smelting furnace sky furnace by step 2, then pours into aluminum water until aluminum water floods aluminum waste material, heated crucible
Aluminum waste material is dissolved, the first molten aluminum is obtained；2) slagging agent of 5-10kg is added into the first molten aluminum, and in the first temperature of aluminum liquid
Magnesium ingot is added when being 720-730 DEG C, obtains the second molten aluminum, the weight ratio of magnesium ingot and the first molten aluminum is 1:180~200；
Step 3: opening nitrogen valve, is passed through nitrogen and refining agent, nitrogen pressure .3- to furnace hearth by refining pipe
0.76MPa keeps refining pipe mobile in furnace hearth, fast moves within first 5 minutes and guarantee the second molten aluminum magic flower, then nitrogen is subtracted
Pressure makes bubble apart from liquid level 60-70mm, refines 30-40 minutes, after being passed through nitrogen into the second molten aluminum, to the second molten aluminum
Middle addition intermediate alloy simultaneously opens magnetic agitation；
Step 4: clawing the liquid level dross of the second molten aluminum after detection refining, and be sampled to the second molten aluminum, will when sampling
At the sample spoon center suitable for reading for turning down and stretching to smelting furnace, after stirring the second molten aluminum, rolls up taking-up sample liquid for sample spoon is suitable for reading, use
Secondary method of comparison detects sample liquid；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison
Less than 0 .05%；
Step 5: after the detection of the second molten aluminum is qualified, carrying out thermometric to smelting metal, when reaching the casting temperature upper limit needed for alloy into
Row is stood, then time of repose 40-60min comes out of the stove.
The above embodiments and description only illustrate the principle of the present invention and most preferred embodiment, is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.
Claims (1)
1. a kind of method of smelting of aluminium, it is characterised in that: the following steps are included:
Step 1: it chooses smelting completion and meets aluminum water as defined in GB/T3190-2008；Magnesium ingot: purity is chosen 99
.8% above magnesium ingot；Magnesium ingot quality meets GB/T3499 standard regulation；Intermediate alloy: alusil alloy is chosen, wherein Al, Si
Content is 11~12-50；Al-Ti-B alloy, wherein Al, Ti, B content 85-5-2；Aluminum waste material: aluminium content is greater than 60%
Aluminum products reclaimed materials；Refining agent: refining agent water content is not greater than 1%, is incorporated by 0.5-1kg/ tons；
Aluminum waste material: 1) being put into smelting furnace sky furnace by step 2, then pours into aluminum water until aluminum water floods aluminum waste material, heated crucible
Aluminum waste material is dissolved, the first molten aluminum is obtained；2) slagging agent of 5-10kg is added into the first molten aluminum, and in the first temperature of aluminum liquid
Magnesium ingot is added when being 720-730 DEG C, obtains the second molten aluminum, the weight ratio of magnesium ingot and the first molten aluminum is 1:180~200；
Step 3: opening nitrogen valve, is passed through nitrogen and refining agent, nitrogen pressure .3- to furnace hearth by refining pipe
0.76MPa keeps refining pipe mobile in furnace hearth, fast moves within first 5 minutes and guarantee the second molten aluminum magic flower, then nitrogen is subtracted
Pressure makes bubble apart from liquid level 60-70mm, refines 30-40 minutes, after being passed through nitrogen into the second molten aluminum, to the second molten aluminum
Middle addition intermediate alloy simultaneously opens magnetic agitation；
Step 4: clawing the liquid level dross of the second molten aluminum after detection refining, and be sampled to the second molten aluminum, will when sampling
At the sample spoon center suitable for reading for turning down and stretching to smelting furnace, after stirring the second molten aluminum, rolls up taking-up sample liquid for sample spoon is suitable for reading, use
Secondary method of comparison detects sample liquid；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison
Less than 0 .05%；
Step 5: after the detection of the second molten aluminum is qualified, carrying out thermometric to smelting metal, when reaching the casting temperature upper limit needed for alloy into
Row is stood, then time of repose 40-60min comes out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811055713.2A CN109182805A (en) | 2018-09-11 | 2018-09-11 | A kind of method of smelting of aluminium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811055713.2A CN109182805A (en) | 2018-09-11 | 2018-09-11 | A kind of method of smelting of aluminium |
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| Publication Number | Publication Date |
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| CN109182805A true CN109182805A (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811055713.2A Pending CN109182805A (en) | 2018-09-11 | 2018-09-11 | A kind of method of smelting of aluminium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410590A (en) * | 2019-08-23 | 2021-02-26 | 江苏双隆铝业有限公司 | Aluminum bar manufacturing process |
-
2018
- 2018-09-11 CN CN201811055713.2A patent/CN109182805A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410590A (en) * | 2019-08-23 | 2021-02-26 | 江苏双隆铝业有限公司 | Aluminum bar manufacturing process |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190111 |
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| WD01 | Invention patent application deemed withdrawn after publication |