CN105483390A - Waste aluminum skimming regeneration short-process forming method - Google Patents
Waste aluminum skimming regeneration short-process forming method Download PDFInfo
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- CN105483390A CN105483390A CN201610057672.5A CN201610057672A CN105483390A CN 105483390 A CN105483390 A CN 105483390A CN 201610057672 A CN201610057672 A CN 201610057672A CN 105483390 A CN105483390 A CN 105483390A
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- aluminium
- aluminium scrap
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- scrap bits
- waste aluminum
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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
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
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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
- C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
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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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- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a waste aluminum skimming regeneration short-process forming method. The method comprises the steps that firstly, waste aluminum skimmings are put into a smasher to be smashed, and heavy impurities in the waste aluminum skimmings are thrown out; then, the waste aluminum skimmings smashed by the smasher are dried and subjected to impurity removal, and oil dirt, water and other impurities on the surfaces of the aluminum skimmings are removed; the dried waste aluminum skimmings subjected to impurity removal are put into a high-pressure rotate-compressing and expand-extruding barrel, and the extruding barrel is heated; then, a rotating press is started, and rotate-compressing and expanding large-plasticity extruding forming is carried out on the waste aluminum skimmngs in the extruding barrel; finally, a product is cooled. By means of the method, the waste aluminum skimmings are directly processed into the aluminum alloy product, the problems such as high aluminum skimming burning loss, low efficiency and serious pollution in the traditional waste aluminum skimming recovery process are solved, smelting, ingot casting and other links in the traditional technology are omitted, and the advantages of being short in process and environmentally friendly, saving energy and the like are achieved.
Description
Technical field
The invention belongs to aluminium scrap bits regeneration shaping processing technique field, especially relate to and adopt large plastometric set method to carry out reclaiming the method for reprocessing shaping to aluminium scrap bits, belong to non ferrous metal and their alloy waste recovery and reshape method, specifically a kind of aluminium scrap bits regeneration short route manufacturing process.
Technical background
Aluminium alloy produces a large amount of scrap in the course of processing.In recent years, the world shifts to China the wheel hub production center, and domestic automobile wheel hub output grows at top speed.Within 2014, domestic automobile wheel hub output is about 2.08 hundred million, and by car aluminium alloy wheel hub 10Kg/ part, process redundancy 10% calculates, and the 2014 aluminium bits being only the generation of aluminium alloy wheel hub mechanical workout just reach 20.8 ten thousand tons.The first half of the year in 2015, China's passenger vehicle engine output was about 976.3 ten thousand, and according to engine cylinder-body blank 30Kg/ platform, process redundancy 10% calculates, and within 2015, first aluminium bits being only the generation of engine cylinder-body mechanical workout reach 30,000 tons.
At present, aluminium alloy scrap mainly reclaims by remelting process, vacuum distillation method and electrolytic refining process.Vacuum distillation method and electrolytic refining process complex process, technology controlling and process is strict, and cost is high.Remelting process reclaims aluminium waste and mainly adopts the mode reclaimings such as rotary kiln, shaft furnace, reverberatory furnace, drying type stove and induction furnace.Aluminium scrap is in reflow process, and oxidation is serious, and loss amount is large, and organic efficiency is low.In order to solve an above-mentioned difficult problem, just actively inquire into, develop the aluminium alloy scrap regeneration techniques of more rationally science in the world.The advantages such as direct reclaiming effectively can avoid the shortcoming in reflow process, and it is short to have flow process, and energy consumption is low, and exhaust gas emission is few, get more and more people's extensive concerning.Direct Regeneration method reclaims aluminium alloy scrap and decreases operation, improves efficiency, reduces cost, have the advantage of energy-conserving and environment-protective.
Summary of the invention
Object of the present invention is just to provide a kind of aluminium scrap bits regeneration short route manufacturing process, to carry out through pretreated aluminium scrap bits compressing-expand large plastometric set, in deformation process, by metallurgical binding, waste material is combined in aluminium scrap bits, subsequently extrusion molding is carried out to it, prepare wire rod, section bar and tubing.
The present invention is to achieve these goals by the following technical solutions:
A kind of aluminium scrap bits regeneration short route manufacturing process:
Aluminium scrap bits are put into crusher by the first step, carry out fragmentation to aluminium scrap bits, heavier foreign material in aluminium scrap bits are thrown away simultaneously;
Aluminium scrap bits through crusher in crushing process are put into oven dry knot screen and are carried out oven dry removal of impurities by second step, remove the impurity such as the surperficial greasy dirt of aluminium scrap bits and water; Drying knot screen is the rotary oven tilted, and pitch angle is 30-45 °, and speed of rotation is 1-10r/min, and drying removal of impurities temperature is 100-500 DEG C, dries except miscellaneous time is 10-120min;
3rd step, put into high-pressure rotary compression-expending extrusion cylinder inside by through drying the bits of the aluminium scrap after removal of impurities, and heat this container, Heating temperature is 100-600 DEG C, and heat-up time is 10-100min.
4th step, start rotary press, aluminium scrap bits in high-pressure rotary compression-expending extrusion cylinder are compressed-expand large plastic extrusion, first rotary press carries out rotational shear distortion to aluminium scrap bits, column aluminium block had been compressed to before aluminium scrap bits enter the compressing hole of high-pressure rotary compression-expending extrusion cylinder, aluminium scrap bits are inner there occurs larger distortion, along with the pressure of rotary press constantly increases, the aluminium block being pressed into column enters the compressing hole of high-pressure rotary compression-expending extrusion cylinder, aluminium block inside proceeds compression set, the aluminium block diameter of column reduces further, the column aluminium block that diameter reduces enters from compressing hole and expands chamber, now the diameter of aluminium block increases, in extended cavity outlet, shaping dies is installed, aluminium block utilizes shaping dies to form, in forming process, high-pressure rotary compression-expending extrusion cylinder diameter is 20-400mm, and compressing hole diameter is 10-300mm, and extending bore diameter is 20-1000mm, shaping dies can be wire rod, section bar and tubing etc.
5th step, aluminum products carry out on-line cooling by cooling system, and cooling adopts water-cooling pattern, and cooling water flow is 1-20L/min.
Beneficial effect of the present invention is:
First the present invention carries out pre-treatment to aluminium alloy scrap, aluminium scrap bits are loaded crusher, fragmentation is carried out to aluminium bits, heavier foreign material in aluminium bits are thrown away simultaneously, directly enter drying unit through broken aluminium bits and carry out oven dry heating, the foreign material evaporations such as the greasy dirt that aluminium is considered to be worth doing and water, thus prepare the higher aluminium bits of purity; Then to compressing through pretreated aluminium scrap-expand large plastometric set, realize directly shaping from aluminium scrap; Advantage of the present invention is as follows:
(1) present invention achieves from aluminium scrap bits be directly processed into Al-alloy products, eliminate the link such as melting, ingot casting in conventional art, there is the advantages such as flow process is short, energy consumption is low, energy-conserving and environment-protective.
(2) instant invention overcomes in conventional aluminum bits removal process the difficult problems such as aluminium bits scaling loss is high, efficiency is low, seriously polluted, effectively increase the utilization ratio of aluminium bits, saved the aluminium energy.
(3) aluminum products prepared of the present invention, density is high, and structure property is excellent.
Accompanying drawing explanation
Fig. 1 is a kind of aluminium scrap bits of the present invention regeneration short route manufacturing process schematic diagram;
In figure: 1, aluminium scrap bits; 2, crusher; 3, broken wheel; 4, knot screen is dried; 5, high-pressure rotary compression-expending extrusion cylinder; 6, refractory brick; 7, resistance wire; 8, rotary press; 9, extrusion stem; 10, compressing hole; 11, extended cavity; 12, shaping dies; 13, cooling system.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
A kind of aluminium scrap bits regeneration short route manufacturing process, its flow process as shown in Figure 1,
First, aluminium scrap bits 1 are put into crusher 2, fragmentation is carried out to aluminium scrap bits 1, heavier foreign material in aluminium scrap bits 1 are thrown away simultaneously; Described crusher 1 mainly comprises the broken wheel 3 in crusher shell and shell, and crusher 2 pairs of aluminium scrap bits 1 carry out fragmentation, make aluminium scrap consider 1 size uniform to be worth doing;
Then, put into by the aluminium scrap bits 1 through crusher 2 break process and dry knot screen 4 and carry out ovens dry removal of impurities, the impurity such as the greasy dirt on 1 surface and water considered to be worth doing by removal aluminium scrap; Described oven dry knot screen 4 is the rotary oven tilted, and pitch angle is 30-45 °, and speed of rotation is 1-10r/min, and drying removal of impurities temperature is 100-500 DEG C, dries except miscellaneous time is 10-120min;
Then, put into high-pressure rotary compression-expending extrusion cylinder 5 inside by through drying the bits of the aluminium scrap after removal of impurities 1, and heat high-pressure rotary compression-expending extrusion cylinder 5, heating adopts the combined heated of refractory brick 6 and nichrome wire 7, Heating temperature is 100-600 DEG C, and heat-up time is 10-100min.
Afterwards, start rotary press 8, aluminium scrap bits 1 in high-pressure rotary compression-expending extrusion cylinder 5 are compressed-expand large plastic extrusion, rotary press 8 drives the extrusion stem 9 pairs of aluminium scrap bits 1 be arranged in high-pressure rotary compression-expending extrusion cylinder 5 to carry out rotational shear distortion, column aluminium block had been compressed to before aluminium scrap bits 1 enter the compressing hole 10 of high-pressure rotary compression-expending extrusion cylinder 5, aluminium scrap is considered 1 inside to be worth doing and be there occurs larger distortion, along with the pressure of rotary press 8 constantly increases, the aluminium block being pressed into column enters the compressing hole 10 of high-pressure rotary compression-expending extrusion cylinder 5, aluminium block inside proceeds compression set, the aluminium block diameter of column reduces further, the column aluminium block that diameter reduces enters from compressing hole 10 and expands chamber 11, now the diameter of aluminium block increases, export in extended cavity 11 and shaping dies 12 is installed, aluminium block utilizes shaping dies 12 to form, in forming process, the container diameter of high-pressure rotary compression-expending extrusion cylinder 5 is 20-400mm, and compressing hole 10 diameter is 10-300mm, and extended cavity 11 diameter is 20-1000mm, shaping dies 12 can be wire rod, section bar and tubing etc.
5th step, aluminum products carry out on-line cooling by cooling system 13, and cooling adopts water-cooling pattern, and cooling water flow is 1-20L/min.
Embodiment 1:
Present method is adopted to prepare A356 aluminium alloy wires step as follows:
Aluminium scrap bits are put into crusher by the first step, carry out fragmentation to bulk aluminium bits, heavier foreign material in aluminium bits are thrown away simultaneously;
Second step, oven dry knot screen is put into the aluminium scrap bits through crusher in crushing process and carries out oven dry removal of impurities, remove the impurity such as the surperficial greasy dirt of aluminium scrap bits and water, drying knot screen is the rotary oven tilted, pitch angle is 30 °, speed of rotation is 5-6r/min, and drying removal of impurities temperature is 100-200 DEG C, dries except miscellaneous time is 20-50min;
3rd step, put into high-pressure rotary compression-expending extrusion cylinder inside by through drying the bits of the aluminium after removal of impurities, and heat this container, Heating temperature is 300-400 DEG C, and heat-up time is 10-20min;
4th step, starts pressing machine, compresses-expand large ram pressing to the aluminium bits in container; In forming process, container diameter is 100mm, and compressing hole diameter is 50mm, and extended cavity diameter is 100mm; Adopt wire forming mould;
5th step, carry out on-line cooling to the aluminium alloy wires of preparation, cooling water flow is 10L/min.
Embodiment 2:
The inventive method is adopted to prepare A356 aluminium alloy pipe step as follows:
Aluminium scrap bits are put into crusher by the first step, carry out fragmentation to bulk aluminium bits, heavier foreign material in aluminium scrap bits are thrown away simultaneously;
Second step, puts into oven dry knot screen to the aluminium scrap bits through crusher in crushing process and carries out oven dry removal of impurities, mainly removes the impurity such as the surperficial greasy dirt of aluminium scrap bits and water; Drying knot screen is the rotary oven tilted, and pitch angle is 40 °, and speed of rotation is 8-10r/min, and drying removal of impurities temperature is 100-200 DEG C, dries except miscellaneous time is 20-50min;
3rd step, put into high-pressure rotary compression-expending extrusion inside by through drying the bits of the aluminium after removal of impurities, and heat container, Heating temperature is 400-450 DEG C, and heat-up time is 20-40min;
4th step, starts pressing machine, compresses-expand large ram pressing to the aluminium bits in container; In forming process, container diameter is 60mm, and compressing hole diameter is 50mm, and extended cavity diameter is 60mm; Adopt forming die for pipe;
5th step, carries out on-line cooling to goods, and cooling water flow is 20L/min.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (5)
1. an aluminium scrap bits regeneration short route manufacturing process, is characterized in that: comprise the steps:
Aluminium scrap bits are put into crusher by the first step, carry out fragmentation to aluminium scrap bits, heavier foreign material in aluminium scrap bits are thrown away simultaneously;
Aluminium scrap bits through crusher in crushing process are put into oven dry knot screen and are carried out oven dry removal of impurities by second step, remove the impurity such as the surperficial greasy dirt of aluminium scrap bits and water;
3rd step, puts into high-pressure rotary compression-expending extrusion cylinder inside by through drying the bits of the aluminium scrap after removal of impurities, and heats high-pressure rotary compression-expending extrusion cylinder;
4th step, start rotary press, aluminium scrap bits in high-pressure rotary compression-expending extrusion cylinder are compressed-expand large plastic extrusion, first rotary press carries out rotational shear distortion to aluminium scrap bits, column aluminium block had been compressed to before aluminium scrap bits enter the compressing hole of high-pressure rotary compression-expending extrusion cylinder, along with the pressure of rotary press constantly increases, the aluminium block being pressed into column enters the compressing hole of high-pressure rotary compression-expending extrusion cylinder, the aluminium block diameter of column reduces further, the column aluminium block that diameter reduces enters from compressing hole and expands chamber, in extended cavity outlet, shaping dies is installed, aluminium block utilizes shaping dies to form,
5th step, carries out on-line cooling to the aluminum products be shaped.
2. a kind of aluminium scrap bits regeneration short route manufacturing process according to claim 1, it is characterized in that: the oven dry knot screen in described second step is the rotary oven tilted, pitch angle is 30-45 °, speed of rotation is 1-10r/min, the temperature of drying removal of impurities is 100-500 DEG C, dries except miscellaneous time is 10-120min.
3. a kind of aluminium scrap bits regeneration short route manufacturing process according to claim 1, is characterized in that: the high-pressure rotary compression-expending extrusion cylinder Heating temperature in described 3rd step is 100-600 DEG C, and heat-up time is 10-100min.
4. a kind of aluminium scrap bits regeneration short route manufacturing process according to claim 1, it is characterized in that: in extrusion process described in described 4th step, high-pressure rotary compression-expending extrusion cylinder diameter is 20-400mm, and compressing hole diameter is 10-300mm, and extending bore diameter is 20-1000mm; Described shaping dies can be wire rod, section bar and pipe mold.
5. a kind of aluminium scrap bits regeneration short route manufacturing process according to claim 1, is characterized in that: the on-line cooling in described 5th step adopts water cooling, and described cooling water flow is 1-20L/min.
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Cited By (8)
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| CN106148707A (en) * | 2016-07-31 | 2016-11-23 | 吴雪梅 | A kind of Full-automatic aluminum alloyed scrap reclaims forming machine |
| CN106350691A (en) * | 2016-09-18 | 2017-01-25 | 湘西自治州丰达合金科技有限公司 | Integrated manganese-aluminum alloy preparation device and manganese-aluminum alloy preparation method |
| CN106944627A (en) * | 2017-02-19 | 2017-07-14 | 山东银光钰源轻金属精密成型有限公司 | A kind of method of use magnesium alloy scrap extruding production sacrificial anode section bar |
| CN109848190A (en) * | 2019-04-08 | 2019-06-07 | 马鞍山旭阳机械有限公司 | A kind of machined metal clast recycling and forming integrated equipment |
| CN110153343A (en) * | 2019-06-05 | 2019-08-23 | 浙江蔚华汽车科技有限公司 | A kind of novel aluminum alloy formed solid method |
| CN111570484A (en) * | 2020-05-27 | 2020-08-25 | 浙江新祥铝业股份有限公司 | Aluminum scrap residue recovery treatment process |
| CN113333555A (en) * | 2021-05-26 | 2021-09-03 | 北京科技大学 | Solid-state metal chip recovery device |
| CN117305603A (en) * | 2023-10-17 | 2023-12-29 | 中信戴卡股份有限公司 | Solid-phase synthesis recovery method for aluminum scraps of automobile parts |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148707A (en) * | 2016-07-31 | 2016-11-23 | 吴雪梅 | A kind of Full-automatic aluminum alloyed scrap reclaims forming machine |
| CN106350691A (en) * | 2016-09-18 | 2017-01-25 | 湘西自治州丰达合金科技有限公司 | Integrated manganese-aluminum alloy preparation device and manganese-aluminum alloy preparation method |
| CN106944627A (en) * | 2017-02-19 | 2017-07-14 | 山东银光钰源轻金属精密成型有限公司 | A kind of method of use magnesium alloy scrap extruding production sacrificial anode section bar |
| CN109848190A (en) * | 2019-04-08 | 2019-06-07 | 马鞍山旭阳机械有限公司 | A kind of machined metal clast recycling and forming integrated equipment |
| CN110153343A (en) * | 2019-06-05 | 2019-08-23 | 浙江蔚华汽车科技有限公司 | A kind of novel aluminum alloy formed solid method |
| CN111570484A (en) * | 2020-05-27 | 2020-08-25 | 浙江新祥铝业股份有限公司 | Aluminum scrap residue recovery treatment process |
| CN113333555A (en) * | 2021-05-26 | 2021-09-03 | 北京科技大学 | Solid-state metal chip recovery device |
| CN117305603A (en) * | 2023-10-17 | 2023-12-29 | 中信戴卡股份有限公司 | Solid-phase synthesis recovery method for aluminum scraps of automobile parts |
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Effective date of registration: 20191114 Address after: 526200 Asian Metal Resource Recycling Industrial Base D32, Zhaoqing, Longfu Town, Sihui City, Zhaoqing City, Guangdong Province Patentee after: Zhaoqing great Zheng Aluminum company limited Address before: 030051, Xueyuan Road, Shanxi Province, Taiyuan Province, No. 3 Patentee before: Zhongbei Univ |
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