CN110157910A - A kind of waste and old alum recovery reprocessing processing method - Google Patents
A kind of waste and old alum recovery reprocessing processing method Download PDFInfo
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- CN110157910A CN110157910A CN201810228879.3A CN201810228879A CN110157910A CN 110157910 A CN110157910 A CN 110157910A CN 201810228879 A CN201810228879 A CN 201810228879A CN 110157910 A CN110157910 A CN 110157910A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0084—Obtaining aluminium melting and handling molten aluminium
- C22B21/0092—Remelting scrap, skimmings or any secondary source aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- 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
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- Processing Of Solid Wastes (AREA)
Abstract
A kind of waste and old alum recovery reprocessing processing method, belongs to metal smelt technical field.The waste aluminum being recovered to is freezed 2-3 hours in freezing chamber, partial size is crushed to after taking-up less than 3cm, then after being cleaned, being dried by the waste and old alumina particles after cleaning 720-860 DEG C at a temperature of heating and melting at aluminum alloy melt, iron removing reagent is added, time 2-3 hour, until after reacting balance, temperature gradually near room temperature, aluminium alloy after cooling is crushed to partial size less than 1cm again, then it cleaned, dry carry out magnetic separation, steel object is isolated from aluminium alloy, final high temperature is smelted, addition reducing agent, 600-720 DEG C of temperature.Present invention process is simple, gets rid of fibre and sundries in waste and old aluminum products by broken, cleaning, removes ferro element by iron removing reagent and reduction process, can be improved the rate of recovery of aluminium by this technique simultaneously, the rate of recovery of aluminium is enable to reach 96%-99%.
Description
Technical field
The invention belongs to metal smelt technical fields, and in particular to a kind of waste and old alum recovery reprocessing processing method.
Background technique
The main component of aluminium alloy is aluminium, and aluminium alloy is most widely used one kind non-ferrous metal structural material in industry,
It has been widely applied in Aeronautics and Astronautics, automobile, machine-building, ship and chemical industry.The rapid development of industrial economy, to aluminium
The demand of alloy welding structural element is increasing, and the Research on Weldability enabled aluminum alloy to is also goed deep into therewith, and aluminium alloy is application at present
Most alloys.
Currently, since the high-quality bauxite resource in China relatively lacks, the exploitation of aluminium ore much not as good as the use of aluminum products,
So the bauxite resource in some places is mainly obtained from the miscellaneous aluminium that gives up of recycling, the miscellaneous aluminium that gives up includes the fine aluminium of aluminium processing enterprise
Leftover pieces, life aluminum products, discarded Al-alloy products and cast aluminium alloy gold, aluminum core line and aluminium scrap product etc., and document report
Give up miscellaneous aluminium regeneration processing.
Summary of the invention
To overcome the defects of present in the prior art, the present invention provides a kind of waste and old alum recovery reprocessing processing method, energy
Enough solve above-mentioned technical problem.
The invention solves technical solutions used by its technical problem to be: designing a kind of waste and old alum recovery reprocessing processing
Method successively carries out as steps described below:
Step 1: the waste aluminum being recovered to is freezed 2-3 hours in freezing chamber, and partial size is crushed to after taking-up and is less than
Then 3cm is cleaned, is dried；
Step 2: by the waste and old alumina particles after cleaning 720-860 DEG C at a temperature of heating and melting at aluminum alloy melt, be added
Iron removing reagent, time 2-3 hour；
Step 3: after reacting balance, aluminium alloy after cooling is crushed to partial size again and is less than by temperature gradually near room temperature
Then 1cm is cleaned, is dried；
Step 4: steel object is isolated in magnetic separation from aluminium alloy；
Step 5: pyrolytic semlting, addition reducing agent, 600-720 DEG C of temperature；
Iron removing reagent described in step 3 is sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；
The sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) are as follows: sodium chloride:
22-30 parts, potassium chloride: 24-35 parts, magnesium chloride: 10-20 parts, sub- vulcanized sodium: 6-10 parts, carbon trichloride: 5-10 parts, fluorite: 4-
8 parts.
Preferably, the iron removing reagent is sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；Institute
Sodium chloride, potassium chloride, magnesium chloride, the sub- vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) stated are as follows: sodium chloride: 25
Part, potassium chloride: 30 parts, magnesium chloride: 15 parts, sub- vulcanized sodium: 8 parts, carbon trichloride: 6 parts, fluorite: 5 parts.
Preferably, the granularity of the fluorite is 2-5mm.
The present invention has the beneficial effects that
1, present invention process is simple, gets rid of fibre and sundries in waste and old aluminum products by broken, cleaning, passes through
Iron removing reagent and reduction process remove ferro element, can be improved the rate of recovery of aluminium by this technique simultaneously, enable the rate of recovery of aluminium
Reach 96%-99%.
Specific embodiment
Embodiment one
A kind of waste and old alum recovery reprocessing processing method, successively carries out as steps described below:
Step 1: the waste aluminum being recovered to is freezed 2-3 hours in freezing chamber, and partial size is crushed to after taking-up and is less than
Then 3cm is cleaned, is dried；
Step 2: by the waste and old alumina particles after cleaning 720-860 DEG C at a temperature of heating and melting at aluminum alloy melt, be added
Iron removing reagent, time 2-3 hour；
Step 3: after reacting balance, aluminium alloy after cooling is crushed to partial size again and is less than by temperature gradually near room temperature
Then 1cm is cleaned, is dried；
Step 4: steel object is isolated in magnetic separation from aluminium alloy；
Step 5: pyrolytic semlting, addition reducing agent, 600-720 DEG C of temperature；
Iron removing reagent described in step 3 is sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；Institute
Sodium chloride, potassium chloride, magnesium chloride, the sub- vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) stated are as follows: sodium chloride: 22
Part, potassium chloride: 28 parts, magnesium chloride: 18 parts, sub- vulcanized sodium: 7 parts, carbon trichloride: 8 parts, fluorite: 5 parts.
The granularity of the fluorite is 3mm.
Embodiment two
A kind of waste and old alum recovery reprocessing processing method, successively carries out as steps described below:
Step 1: the waste aluminum being recovered to is freezed 2-3 hours in freezing chamber, and partial size is crushed to after taking-up and is less than
Then 3cm is cleaned, is dried；
Step 2: by the waste and old alumina particles after cleaning 720-860 DEG C at a temperature of heating and melting at aluminum alloy melt, be added
Iron removing reagent, time 2-3 hour；
Step 3: after reacting balance, aluminium alloy after cooling is crushed to partial size again and is less than by temperature gradually near room temperature
Then 1cm is cleaned, is dried；
Step 4: steel object is isolated in magnetic separation from aluminium alloy；
Step 5: pyrolytic semlting, addition reducing agent, 600-720 DEG C of temperature；
Iron removing reagent described in step 3 is sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；Institute
Sodium chloride, potassium chloride, magnesium chloride, the sub- vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) stated are as follows: sodium chloride: 25
Part, potassium chloride: 30 parts, magnesium chloride: 12 parts, sub- vulcanized sodium: 8 parts, carbon trichloride: 6 parts, fluorite: 7 parts.
The granularity of the fluorite is 2mm.
Embodiment three
A kind of waste and old alum recovery reprocessing processing method, successively carries out as steps described below:
Step 1: the waste aluminum being recovered to is freezed 2-3 hours in freezing chamber, and partial size is crushed to after taking-up and is less than
Then 3cm is cleaned, is dried；
Step 2: by the waste and old alumina particles after cleaning 720-860 DEG C at a temperature of heating and melting at aluminum alloy melt, be added
Iron removing reagent, time 2-3 hour；
Step 3: after reacting balance, aluminium alloy after cooling is crushed to partial size again and is less than by temperature gradually near room temperature
Then 1cm is cleaned, is dried；
Step 4: steel object is isolated in magnetic separation from aluminium alloy；
Step 5: pyrolytic semlting, addition reducing agent, 600-720 DEG C of temperature；
Walking iron removing reagent described in step 3 is sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；
The sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) are as follows: sodium chloride: 30
Part, potassium chloride: 32 parts, magnesium chloride: 15 parts, sub- vulcanized sodium: 6 parts, carbon trichloride: 9 parts, fluorite: 8 parts.
The granularity of the fluorite is 5mm.
It should be noted last that: the above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although ginseng
It is described the invention in detail according to above-described embodiment, it will be apparent to an ordinarily skilled person in the art that: it still can be to this
Invention is modified or replaced equivalently, without departing from the spirit or scope of the invention, or any substitutions,
It is intended to be within the scope of the claims of the invention.
Claims (3)
1. a kind of waste and old alum recovery reprocesses processing method, it is characterised in that: successively carry out as steps described below:
Step 1: the waste aluminum being recovered to is freezed 2-3 hours in freezing chamber, and partial size is crushed to after taking-up less than 3cm, so
After cleaned, dried；
Step 2: by the waste and old alumina particles after cleaning 720-860 DEG C at a temperature of heating and melting at aluminum alloy melt, be added and remove iron
Agent, time 2-3 hour；
Step 3: after reacting balance, aluminium alloy after cooling is crushed to partial size less than 1cm by temperature gradually near room temperature again,
Then it cleaned, dried；
Step 4: steel object is isolated in magnetic separation from aluminium alloy；
Step 5: pyrolytic semlting, addition reducing agent, 600-720 DEG C of temperature；
Iron removing reagent described in step 3 is sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；It is described
Sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) are as follows: sodium chloride: 22-30
Part, potassium chloride: 24-35 parts, magnesium chloride: 10-20 parts, sub- vulcanized sodium: 6-10 parts, carbon trichloride: 5-10 parts, fluorite: 4-8 parts.
2. a kind of waste and old alum recovery according to claim 1 reprocesses processing method, it is characterised in that: the iron removing reagent
For sodium chloride, potassium chloride, magnesium chloride, sub- vulcanized sodium, carbon trichloride, hydrofluoric acid；The sodium chloride, potassium chloride, magnesium chloride, Asia
Vulcanized sodium, carbon trichloride, fluorite consumption (mass fraction) are as follows: sodium chloride: 25 parts, potassium chloride: 30 parts, magnesium chloride: 15 parts, Asia
Vulcanized sodium: 8 parts, carbon trichloride: 6 parts, fluorite: 5 parts.
3. a kind of waste and old alum recovery according to claim 1 reprocesses processing method, it is characterised in that: the fluorite
Granularity is 2-5mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228879.3A CN110157910A (en) | 2018-03-20 | 2018-03-20 | A kind of waste and old alum recovery reprocessing processing method |
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| CN201810228879.3A CN110157910A (en) | 2018-03-20 | 2018-03-20 | A kind of waste and old alum recovery reprocessing processing method |
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| CN110157910A true CN110157910A (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287475A (en) * | 2022-06-23 | 2022-11-04 | 江苏岐铭新材料科技发展有限公司 | Method for recovering aluminum alloy powder from waste wheel hub aluminum alloy |
Citations (6)
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|---|---|---|---|---|
| CN1390965A (en) * | 2002-07-25 | 2003-01-15 | 上海交通大学 | Flux for removing iron from Mg alloy and its preparing process |
| CN102127649A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Slag and aluminum separating flux |
| CN103361487A (en) * | 2013-07-22 | 2013-10-23 | 南南铝业股份有限公司 | Production method of recycled aluminum |
| CN103382524A (en) * | 2013-07-22 | 2013-11-06 | 南南铝业股份有限公司 | Regenerating method of waste aluminum foil containing organic matters |
| CN103966472A (en) * | 2014-05-14 | 2014-08-06 | 南昌大学 | Method for removing iron in regenerated aluminum alloy |
| CN107716066A (en) * | 2017-09-30 | 2018-02-23 | 赵敬武 | A kind of processing system for improving old and useless aluminium foil recovery utilization rate |
-
2018
- 2018-03-20 CN CN201810228879.3A patent/CN110157910A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390965A (en) * | 2002-07-25 | 2003-01-15 | 上海交通大学 | Flux for removing iron from Mg alloy and its preparing process |
| CN102127649A (en) * | 2010-10-11 | 2011-07-20 | 镇江市丹徒区振华熔剂厂 | Slag and aluminum separating flux |
| CN103361487A (en) * | 2013-07-22 | 2013-10-23 | 南南铝业股份有限公司 | Production method of recycled aluminum |
| CN103382524A (en) * | 2013-07-22 | 2013-11-06 | 南南铝业股份有限公司 | Regenerating method of waste aluminum foil containing organic matters |
| CN103966472A (en) * | 2014-05-14 | 2014-08-06 | 南昌大学 | Method for removing iron in regenerated aluminum alloy |
| CN107716066A (en) * | 2017-09-30 | 2018-02-23 | 赵敬武 | A kind of processing system for improving old and useless aluminium foil recovery utilization rate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287475A (en) * | 2022-06-23 | 2022-11-04 | 江苏岐铭新材料科技发展有限公司 | Method for recovering aluminum alloy powder from waste wheel hub aluminum alloy |
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Application publication date: 20190823 |