CN106756147B - A kind of smelting technology of aluminium - Google Patents
A kind of smelting technology of aluminium Download PDFInfo
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- CN106756147B CN106756147B CN201611053977.5A CN201611053977A CN106756147B CN 106756147 B CN106756147 B CN 106756147B CN 201611053977 A CN201611053977 A CN 201611053977A CN 106756147 B CN106756147 B CN 106756147B
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- aluminum
- molten aluminum
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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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- 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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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
This patent discloses particularly a kind of smelting technologies of aluminium of aluminum products preparing technical field, include the following steps：One：The restrictions such as purity, injected volume are carried out to raw material aluminum water, magnesium ingot, intermediate alloy, aluminum waste material and refining agent；Two：Aluminum waste material is put into smelting furnace sky stove and aluminum water is added, the first molten aluminum is made, slagging agent and magnesium ingot is then added, the second molten aluminum is made；Three：Nitrogen, refining agent and intermediate alloy is added to furnace hearth, and controls the injected volume of nitrogen pressure and refining agent and intermediate alloy, and opens magnetic agitation；Four：Analysis is sampled to the second molten aluminum, ensures that the testing result of sample liquid is up to standard；Testing result is not up to standard, then continues refining process, until testing result is up to standard until up to standard；Five：Coming out of the stove after the detection of the second molten aluminum is qualified.This programme is reasonably arranged by the fusing technique to aluminium, and better effect is played to the purification of aluminum waste material, removal of impurities, degasification and slagging-off, makes the filtrate purity higher melted out.
Description
Technical field
The present invention relates to the preparing technical field of aluminum products, more particularly to a kind of smelting technology of aluminium.
Background technology
Aluminium has special chemistry, a physical characteristic, not only light-weight, quality it is hard and also with good ductility, lead
Electrically, 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 dispensing, melting, casting
Etc. processes.Wherein, melting refers to that the raw material that will prepare are added in smelting furnace by technological requirement and melt, and pass through degasification, slagging-off
Refining means effectively remove miscellaneous slag, the gas in melt 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 quality 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.
Invention content
The invention is intended to provide a kind of smelting technology of aluminium, to realize that the molten aluminum melted out has higher purity.
A kind of smelting technology of aluminium in this programme, includes the following steps：
Step 1：Raw material
Aluminum water：It chooses smelting completion and meets aluminum water as defined in GB/T3190-2008；
Magnesium ingot：Purity is chosen in 99.8% or more magnesium ingot；
Intermediate alloy：Alusil alloy is chosen, wherein AL, Si content is 16 ~ 18：64；Al-Ti-B alloy, wherein Al, Ti, B
Content is 94:5:1；It is required to quality and meets GB/T3499 standards regulation；
Aluminum waste material：The reclaimed materials of aluminum products of the aluminium content more than 60%
Refining agent：Refining agent water content is not greater than 2%, is incorporated by 1 ~ 2kg/ tons；
Step 2：Just refining
1）Aluminum waste material is put into smelting furnace sky stove, then pours into aluminum water until aluminum water floods aluminum waste material, heated crucible makes
Aluminum waste material dissolves, and obtains the first molten aluminum；
2）The slagging agent of 4 ~ 8kg is added into the first molten aluminum, and magnesium is added when the first temperature of aluminum liquid is 750 ~ 760 DEG C
Ingot, obtains the second molten aluminum, and the weight ratio of magnesium ingot and the first molten aluminum is 1:200~220；
Step 3：Refining
Nitrogen valve to be opened, nitrogen and refining agent are passed through to furnace hearth by refining pipe, nitrogen pressure is 0.1 ~ 0.6MPa,
It keeps refining pipe to be moved in furnace hearth, fast moves and ensure within first 5 minutes the second molten aluminum magic flower, then nitrogen decompression is made into bubble
It is 80 ~ 100 apart from liquid level, refines 15 ~ 20 minutes, after being passed through nitrogen into the second molten aluminum, in is added into the second molten aluminum
Between alloy and open magnetic agitation；
Step 4：Detection
The liquid level dross of the second molten aluminum is clawed after refining, and the second molten aluminum is sampled, it, will be on sample spoon when sampling
It mouthful turns down and stretches at the center of smelting furnace, after stirring the second molten aluminum, roll up taking-up sample liquid by sample spoon is suitable for reading, using secondary comparison
Method is detected sample liquid；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison is less than
0.05%；
Step 5：It comes out of the stove
After the detection of second molten aluminum is qualified, thermometric is carried out to smelting metal, is carried out when reaching the casting temperature upper limit needed for alloy
It stands, time of repose is 20 ~ 30min, is then come out of the stove.
The advantageous effect of this programme：Main body of the aluminum water as melting, in the selection of raw material, it is desirable that it meets GB/
T3190-2008 is provided, the quality of aluminium melting is made to have basic guarantee.Simultaneously to the purity of magnesium ingot, intermediate alloy each element it
Between content, the water content of refining agent and injected volume be defined, keep it useless to aluminium in the fusion process of aluminum waste material
Better effect is played in purification, removal of impurities, degasification and the slagging-off of material.
During first refining, it is first put into aluminum waste material, then pours into aluminum water and helps avoid aluminum waste material and be put into aluminum water splashing
The problem of aluminum water damages human body.It is put into slagging agent and magnesium ingot in the first molten aluminum, contributes to the dissolving of aluminum waste material simultaneously
Displace the gas in aluminum waste material.In refining process, it is passed through nitrogen and refining agent, can further be displaced in the second molten aluminum
Oxygen and hydrogen and impurity, so that the purity of the second molten aluminum is significantly improved.In refining process, using magnetic agitation, on the one hand
Nitrogen and refining agent can be accelerated to be mixed with the uniform of the second molten aluminum, keep the reaction of the second molten aluminum more abundant；Meanwhile intermediate alloy
The residual quantity for also contributing to reduce gas in the second molten aluminum is added, to improve the purity of the second molten aluminum.After refining, pass through detection
Keep the second molten aluminum up to standard, contributes to the purity for being further ensured that the second molten aluminum.
Further, after magnesium ingot being added in the first molten aluminum, the magnesium ingot floated on liquid level stirred into the first molten aluminum with taking off son immediately
It is interior.Magnesium ingot is stirred into the first molten aluminum, helps to prevent magnesium ingot from burning.
Further, when intermediate alloy being added into the second molten aluminum, burner of the placement position far from smelting furnace of intermediate alloy.In
Between burner of the alloy placement position far from smelting furnace, helping, which prevents aluminum water from splashing in burner mouth, causes electric pole short circuit, Wu Faqi
Dynamic combustion gas.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail：
Embodiment：A kind of smelting technology of aluminium, includes the following steps：
Step 1：Raw material
Aluminum water：It chooses smelting completion and meets aluminum water as defined in GB/T3190-2008；
Magnesium ingot：Purity is chosen in 99.8% or more magnesium ingot；
Intermediate alloy：Alusil alloy is chosen, wherein AL, Si content is 16 ~ 18：64；Al-Ti-B alloy, wherein Al, Ti, B
Content is 94:5:1；It is required to quality and meets GB/T3499 standards regulation；
Aluminum waste material：The reclaimed materials of aluminum products of the aluminium content more than 60%
Refining agent：Refining agent water content is not greater than 2%, is incorporated by 1 ~ 2kg/ tons；
Step 2：Just refining
1）Aluminum waste material is put into smelting furnace sky stove, then aluminum water casting ladle head piece lid and safety card are opened with specific purpose tool, and
Aluminum water is poured into smelting furnace after being applied on stem bar with oil, until aluminum water floods aluminum waste material, then heated crucible keeps aluminium useless
Material dissolving, obtains the first molten aluminum；
2）The slagging agent of 4 ~ 8kg is added into the first molten aluminum, and magnesium is added when the first temperature of aluminum liquid is 750 ~ 760 DEG C
Then ingot is stirred into the magnesium ingot floated on liquid level in the first molten aluminum with taking off son, be made to the second molten aluminum, magnesium ingot and the first molten aluminum
Weight ratio is 1:200~220；
Step 3：Refining
Nitrogen valve to be opened, nitrogen and refining agent are passed through to furnace hearth by refining pipe, nitrogen pressure is 0.1 ~ 0.6MPa,
It keeps refining pipe to be moved in furnace hearth, fast moves and ensure within first 5 minutes the second molten aluminum magic flower, then nitrogen decompression is made into bubble
It is 80 ~ 100 apart from liquid level, refines 15 ~ 20 minutes, after being passed through nitrogen into the second molten aluminum, in is added into the second molten aluminum
Between alloy and open magnetic agitation, when intermediate alloy is added, keep the placement position of intermediate alloy far from the burner of smelting furnace；
Step 4：Detection
The liquid level dross of the second molten aluminum is clawed after refining, and the second molten aluminum is sampled, it, will be on sample spoon when sampling
It mouthful turns down and stretches at the center of smelting furnace, after stirring the second molten aluminum, roll up taking-up sample liquid by sample spoon is suitable for reading, using secondary comparison
Method is detected sample liquid；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison is less than
0.05%；
Step 5：It comes out of the stove
After the detection of second molten aluminum is qualified, thermometric is carried out to smelting metal, is carried out when reaching the casting temperature upper limit needed for alloy
It stands, time of repose is 20 ~ 30min, is then come out of the stove.
Melting is carried out to aluminum waste material using this programme, the purification of aluminum waste material, removal of impurities, degasification and slagging-off can be played more
Good effect, makes the filtrate purity higher melted out.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific implementation mode can be used for explaining the content of claim.
Claims (3)
1. a kind of smelting technology of aluminium, which is characterized in that include the following steps：
Step 1：Raw material
Aluminum water：It chooses smelting completion and meets aluminum water as defined in GB/T3190-2008；
Magnesium ingot：Choose magnesium ingot of the purity 99.8% or more；Magnesium ingot quality meets GB/T3499 standards regulation；
Intermediate alloy：Alusil alloy is chosen, wherein Al, Si content is 16~18：64；Al-Ti-B alloy, wherein Al, Ti, B contain
Amount is 94:5:1；
Aluminum waste material：The reclaimed materials of aluminum products of the aluminium content more than 60%；
Refining agent：Refining agent water content is not greater than 2%, is incorporated by 1~2kg/ tons；
Step 2：Just refining
1) aluminum waste material is put into smelting furnace sky stove, then pours into aluminum water until aluminum water floods aluminum waste material, heated crucible makes aluminium
Waste material dissolves, and obtains the first molten aluminum；
2) slagging agent of 4~8kg is added into the first molten aluminum, and magnesium ingot is added when the first temperature of aluminum liquid is 750~760 DEG C,
Obtain the second molten aluminum, the weight ratio of magnesium ingot and the first molten aluminum is 1:200~220；
Step 3：Refining
Nitrogen valve is opened, is passed through nitrogen and refining agent to furnace hearth by refining pipe, nitrogen pressure is 0.1~0.6MPa, is protected
Hold refining pipe to move in furnace hearth, fast move and ensure within first 5 minutes the second molten aluminum magic flower, then by nitrogen decompression make bubble away from
It is 80~100mm from liquid level, refines 15~20 minutes, after being passed through nitrogen into the second molten aluminum, be added into the second molten aluminum
Intermediate alloy simultaneously opens magnetic agitation；
Step 4：Detection
The liquid level dross of the second molten aluminum is clawed after refining, and the second molten aluminum is sampled, when sampling, is turned over sample spoon is suitable for reading
It descends and stretches at the center of smelting furnace, after stirring the second molten aluminum, roll up taking-up sample liquid by sample spoon is suitable for reading, using secondary method of comparison pair
Sample liquid is detected；It is repeatedly detected in refining process, until the difference of same element in secondary method of comparison is less than 0.05%；
Step 5：It comes out of the stove
After the detection of second molten aluminum is qualified, thermometric is carried out to smelting metal, is stood when reaching the casting temperature upper limit needed for alloy,
Time of repose is 20~30min, is then come out of the stove.
2. the smelting technology of aluminium according to claim 1, it is characterised in that：After magnesium ingot is added in first molten aluminum, immediately
The magnesium ingot floated on liquid level is stirred into the first molten aluminum with son is taken off.
3. the smelting technology of aluminium according to claim 1 or 2, it is characterised in that：Intermediate close is added into the second molten aluminum
Jin Shi, burner of the placement position far from smelting furnace of intermediate alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611053977.5A CN106756147B (en) | 2016-11-25 | 2016-11-25 | A kind of smelting technology of aluminium |
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| CN201611053977.5A CN106756147B (en) | 2016-11-25 | 2016-11-25 | A kind of smelting technology of aluminium |
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| CN106756147B true CN106756147B (en) | 2018-07-31 |
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| CN112410590A (en) * | 2019-08-23 | 2021-02-26 | 江苏双隆铝业有限公司 | Aluminum bar manufacturing process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251135A (en) * | 2011-08-05 | 2011-11-23 | 中信戴卡轮毂制造股份有限公司 | Improved aluminum liquid refining process |
| CN103103415A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Smelting and preparation method of aluminum alloy profile |
| CN104152757A (en) * | 2014-08-07 | 2014-11-19 | 安徽双诚电线电缆有限公司 | High-conductivity flexible aluminium alloy material preparation method |
| CN104451297A (en) * | 2014-12-30 | 2015-03-25 | 辽宁忠旺集团有限公司 | Casting technology of aluminum bronze series aluminum alloy circular ingots |
-
2016
- 2016-11-25 CN CN201611053977.5A patent/CN106756147B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251135A (en) * | 2011-08-05 | 2011-11-23 | 中信戴卡轮毂制造股份有限公司 | Improved aluminum liquid refining process |
| CN103103415A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Smelting and preparation method of aluminum alloy profile |
| CN104152757A (en) * | 2014-08-07 | 2014-11-19 | 安徽双诚电线电缆有限公司 | High-conductivity flexible aluminium alloy material preparation method |
| CN104451297A (en) * | 2014-12-30 | 2015-03-25 | 辽宁忠旺集团有限公司 | Casting technology of aluminum bronze series aluminum alloy circular ingots |
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Effective date of registration: 20211122 Address after: 410000 Hunan Miluo circular economy industrial park, Yueyang City, Hunan Province Patentee after: Hunan Zhensheng HENGJIA New Material Technology Co.,Ltd. Address before: 563199 Baofeng Village, Nanbai Town, Bozhou District, Zunyi City, Guizhou Province (Guizhou Goujiang Economic Development Zone) Patentee before: ZUNYI HENG JIA ALUMINUM Co.,Ltd. |
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