CN104878207B - Sorting method of metal materials of waste car housing - Google Patents

Sorting method of metal materials of waste car housing Download PDF

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Publication number
CN104878207B
CN104878207B CN201510273993.4A CN201510273993A CN104878207B CN 104878207 B CN104878207 B CN 104878207B CN 201510273993 A CN201510273993 A CN 201510273993A CN 104878207 B CN104878207 B CN 104878207B
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China
Prior art keywords
metal
temperature
liquid
melting furnace
fusing
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Expired - Fee Related
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CN201510273993.4A
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Chinese (zh)
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CN104878207A (en
Inventor
胡陈江
黄勇
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Converge Plane Electricity Co Ltd In Zun Yi
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Converge Plane Electricity Co Ltd In Zun Yi
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

A sorting method of metal materials of a waste car housing relates to the field of material recycling and reusing of a waste car. The technology comprises the following steps: crushing; continually fusing; sorting; cooling; screening; forming metal blocks; classifying; completing sorting. The sorting method fully uses the theory that various metals are different in fusion points, and according to different fusion temperature zone sections of block-shaped metals, the situation that twice sorting through one-time heating is achieved, so that the impurity contained in single metal is greatly decreased, the purity and accuracy of the sorted metals are improved, the value of the sorted metals is further greatly increased, and the profit ratio of enterprises recycling waste cars is increased.

Description

A kind of junked-auto casing metal material go-on-go method
Technical field
The present invention relates to junked-auto material recovery recycles field, and in particular to junked-auto casing metal material point The method of inspection.
Background technology
Statistical data shows that 2014, automobile volume of production and marketing broke through in pairs 23,000,000, and automobile pollution is more than 1.3 hundred million. Domestic automobile some initially enter the date of retirement.Rationally, it is efficient to reclaim junked-auto material and be used, can be real Existing energy-conservation.At present China to automobile China the automobile response rate than relatively low, have a long way to go compared with foreign countries.
Japanese abandoned car Dismantlement is mainly reclaimed by used car, scraped car is disassembled, metal coupon processes that (scrap iron and steel is broken Broken and sorting) " three-stage " completing entirely to recycle process.
To the metal coupon after processing in prior art(Metallic particles after broken)The process of sorting mainly adopts magnetic separation Method realizes the sorting to metallic particles.But magnetic method can not be finely divided on the metal in metallic particles, follow-up recycling is caused When, because containing more other metals in the material after sorting, for waste and old returned enterprise, added value is relatively low, economy effect Benefit is relatively low, and the product purpose for only simply go-on-go being carried out to metallic particles using magnetic method is limited.
The content of the invention
To improve junked-auto casing metal material go-on-go precision, improve and reclaim metal relative worth, the present invention provides one Junked-auto casing metal material go-on-go method is planted, using the different characteristic of melting point metal, fine go-on-go is carried out to metal.
A kind of junked-auto casing metal material go-on-go method, comprises the following steps:
A. crush:Automobile metal housing is cut, is crushed, form metallic particles;
B. persistently melt:Metallic particles is put in melting furnace, continuous heating;
C. go-on-go:It is different by melting point metal, during temperature is constantly elevated, by temperature range Fractional Collections liquid gold Category;
D. lower the temperature:To fusing point segment highest liquid metal continued down;
E. screen:While cooling, the liquid metal in step d is screened according to different temperature range sections;
F. liquid metal cooling temperature range section in step c collected;Form metal derby;
G. temperature range identical principle is pressed, the solid metallic filtered out in step e is returned with the liquid metal in step c Class, completes go-on-go.
The present invention makes full use of the different principle of various melting point metals, by reguline metal molten temperature region section not Together, realize rising once temperature, twice go-on-go;The go-on-go to different metal is completed, greatly reduces the impurity included in single metal, Improve the purity and precision of metal;And then increase substantially the value of the metal after go-on-go.Improve junked-auto recovery The profit margin of enterprise.
Specific embodiment:
The embodiment of technical scheme is made further instructions below.
A kind of junked-auto casing metal material go-on-go method, comprises the following steps:
A. crush:Automobile metal housing is cut, is crushed, form metallic particles;
B. persistently melt:Metallic particles is put in melting furnace, continuous heating;
C. go-on-go:It is different by melting point metal, during temperature is constantly elevated, by temperature range Fractional Collections liquid gold Category;
D. to fusing point segment highest liquid metal continued down;
E. while cooling, the liquid metal in step d is screened according to different temperature range sections;
F. liquid metal cooling temperature range section in step c collected;Form metal derby;
G. temperature range identical principle is pressed, the solid metallic filtered out in step e is returned with the liquid metal in step c Class, completes go-on-go.
Said method can successively be separated the various metals in junk completely, but in view of specific operation process In, the metal of junked-auto housing is mainly contained:The parts such as ferrum, copper, aluminum, cast iron, pure iron, are 660 according to the fusing point of known aluminum DEG C, the fusing point of copper is 1083 DEG C, and the fusing point of various cast irons is 1200 DEG C, and the fusing point of various alloy iron and steel is 1300 DEG C -1400 DEG C, The fusing point of blunt ferrum is 1535 DEG C.
Embodiment 1:
According to go-on-go needs, the maximum temperature of melting furnace is designed as 1600 DEG C;Liquid metals in step c and step e is received Collection temperature range section is respectively 620 DEG C -700 DEG C of alum recovery;Copper reclaims 1060 DEG C -1090 DEG C;Cast iron reclaims 1180 DEG C -1230 ℃;Pure iron reclaims 1520 DEG C -1555 DEG C.The temperature of melting furnace is not limited only to 1600 DEG C, can as needed go-on-go metal most High melting temperature sets.
Embodiment 2:
On the basis of embodiment 1, when temperature is raised, the silicon carbide of liquid alum recovery is 660 DEG C -700 DEG C, liquid It is 1083 DEG C -1090 DEG C that the recovered temperature of copper is interval, and it is 1200 DEG C -1230 DEG C that the recovered temperature of liquid cast is interval;And when temperature Spend when declining for 1600 DEG C, when temperature is less than 1535 DEG C, reclaim solid-state pure iron;The recovery of solid-state cast iron it is interval for 1180 DEG C- 1200 DEG C, it is 1060 DEG C -1083 DEG C that the recovery of In Crystal Solid Copper is interval, and it is 620 DEG C -660 DEG C that the recovery of solid aluminum is interval.
In prior art, in addition to a small amount of senior car spraying water paint, most of car paint is oil paint, and oil paint is worked as and added When hot temperature is more than 500 DEG C, meeting catching fire, while producing substantial amounts of toxic and harmful, is to ensure during metal go-on-go Safety and reduce pollution to air, as the important improvement of the present invention, present invention additionally comprises depainting treatment process.
Described depainting is processed can be completed before car crust is broken, and thick glue paint agent is coated in into car crust surface, Complete depainting process;Now paint stripper proportioning is the mass parts of ethyl acetate 26;The mass parts of acetone 10;The mass parts of toluene 56;Paraffin 8 Mass parts.
Described depainting treatment process can be completed after car crust is broken, the formation little Jin after crushing because of car crust Metal particles, it is impossible to using front coating type paint removal method, for the metallic particles of automobile case iron and steel mostly is, then now select hydrogen-oxygen Change the mass parts of sodium 16;The mass parts of sodium carbonate 4;The mass parts of water 80, metallic particles is soaked in the solution, is stirred after immersion, by gold Metal particles and solution separating, you can realize that the depainting to metallic particles is processed.
To ensure that said method is achieved, it is possible to use following equipment:
A kind of junked-auto casing metal material sorting equipment, including melting furnace, it is characterised in that:Melting furnace inner chamber body bottom Portion and side wall are separately installed with support funnel and screen cloth, described support funnel profile and mating shapes in melting furnace, support Multiple small openings are designed with funnel body, support funnel inner side is fixed and be fitted in screen cloth;Funnel bottom is supported to be fixed on power On axle, line shaft is connected with motor.
The said equipment, when melting furnace heating, when the minimum liquid metal for reaching embodiment 1 collects interval, starts motor, Solid metallic granule rotates in screen cloth net, when temperature continues to raise, has after aluminum metal particles fuse and produces liquid aluminium, in centrifugation In the presence of power, metallic particles and liquid metal are by the way that to screen cloth, support funnel extruding, liquid metal is by screen cloth and small opening edge The side wall of melting furnace flows to the bottom of melting furnace, and by outlet melting furnace is flowed out, and the liquid metal collected in temperature range is then For liquid aluminium;Temperature continues to rise, and when temperature rises to 1083 DEG C, copper metal starts fusing, collects in melting furnace exit Liquid metal then be liquid copper, in the same manner, decomposable asymmetric choice net simultaneously obtains liquid cast, liquid iron and steel, pure iron.When temperature reaches 1600 DEG C When, the metallic particles of waste and old car shell is completely converted into liquid, then, from cooling down, when temperature is less than 1535 DEG C, obtains solid-state Pure iron;When temperature is less than 1083 DEG C, the copper of solid-state is obtained;When temperature is less than 660 DEG C, solid aluminum is obtained, and now removed solid After state aluminum, such as also liquid metal then can control fusing furnace temperature, obtain metal of other fusing points of solid-state less than 660 DEG C.
To ensure to support the intensity and service life of funnel and screen cloth, described support funnel to make from tungsten alloy, and Screen cloth is woven from molybdenum and tungsten alloy silk.
The area of the mesh of described screen cloth is less than the metallic particles area that junked-auto housing is formed after broken.
Protection scope of the present invention is not limited only to the technical scheme disclosed in specific embodiment part, all utilization metals Fusing point is different, and junked-auto casing metal material is carried out to carry out depainting process using specific paint stripper before go-on-go, and go-on-go Process each fall within protection scope of the present invention.

Claims (3)

1. a kind of junked-auto casing metal material go-on-go method, comprises the following steps:
It is a, broken:Automobile metal housing is cut, is crushed, form metallic particles;
B, persistently melt:Metallic particles is put in melting furnace, continuous heating;
C, go-on-go:It is different by melting point metal, during temperature is constantly elevated, by temperature range Fractional Collections liquid metal;
D, to fusing point segment highest liquid metal continued down;
While e, cooling, the liquid metal in step d is screened according to different temperature range sections;
F, the liquid metal cooling that temperature range section in step c is collected;Form metal derby;
G, by temperature range identical principle, the liquid metal in the solid metallic filtered out in step e and step c is sorted out, Complete go-on-go;
Special equipment used in step c, a kind of junked-auto casing metal material sorting equipment, including melting furnace, its feature It is:Melting furnace inner chamber body bottom and side wall are separately installed with support funnel and screen cloth, described support funnel profile and fusing Mating shapes in stove, support and multiple small openings are designed with funnel body, and support funnel inner side is fixed and be fitted in screen cloth;Support Funnel bottom is fixed on line shaft, and line shaft is connected with motor;The equipment, when melting furnace heating, reaches minimum liquid gold When category collects interval, motor is started, solid metallic granule rotates in screen cloth net, when temperature continues to raise, there is aluminum metal Liquid aluminium is produced after grain fusing, under the influence of centrifugal force, metallic particles and liquid metal to screen cloth, support funnel by squeezing Pressure, liquid metal flows to the bottom of melting furnace by screen cloth and small opening along the side wall of melting furnace, and by outlet melting furnace, temperature are flowed out The liquid metal collected in degree interval is then liquid aluminium;Temperature continues to rise, when temperature rises to copper metal fusing point, copper gold Category start fusing, melting furnace exit collect liquid metal then be liquid copper, with should temperature rise to cast iron fusing point, steel After ferrum fusing point, pure iron fusing point, decomposable asymmetric choice net simultaneously obtains liquid cast, liquid iron and steel, pure iron;It is waste and old when temperature reaches 1600 DEG C The metallic particles of car shell is completely converted into liquid, then, from cooling down, when temperature is less than 1535 DEG C, obtains the pure iron of solid-state; When temperature is less than 1083 DEG C, the copper of solid-state is obtained;When temperature is less than 660 DEG C, solid aluminum is obtained, and is now removed after solid aluminum, Such as there is liquid metal, then can control fusing furnace temperature, obtain metal of other fusing points of solid-state less than 660 DEG C.
2. a kind of junked-auto casing metal material go-on-go method according to claim 1, it is characterised in that:Also include de- Paint treatment process;Described depainting is processed and completed before car crust is broken, and thick glue paint agent is coated in into car crust surface, complete Into depainting process;Paint stripper proportioning is the mass parts of ethyl acetate 26;The mass parts of acetone 10;The mass parts of toluene 56;The mass of paraffin 8 Part.
3. a kind of junked-auto casing metal material go-on-go method according to claim 1, it is characterised in that:Also include de- Paint treatment process;Described depainting treatment process is completed after car crust is broken, from the mass parts of sodium hydroxide 16;Sodium carbonate 4 mass parts;The mass parts of water 80, metallic particles is soaked in the solution, is stirred after immersion, by metallic particles and solution separating.
CN201510273993.4A 2015-05-27 2015-05-27 Sorting method of metal materials of waste car housing Expired - Fee Related CN104878207B (en)

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Publication number Priority date Publication date Assignee Title
CN108950128B (en) * 2018-07-20 2020-10-23 北京科技大学 Method for recycling steel of scraped car shell in guaranteed level

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CN1157390A (en) * 1996-02-16 1997-08-20 颜金清 Waste automobile processing device
EP1727917B1 (en) * 2004-03-19 2008-04-23 Aleris Switzerland GmbH Method for the purification of a molten metal
CN101311280A (en) * 2007-05-24 2008-11-26 董蜀希 Process for recovering non-ferrous metal and noble metal from electronic waste material
CN102888141A (en) * 2012-09-24 2013-01-23 中国人民解放军第五七一九工厂 Paint remover for removing epoxy primer and polyurethane finish coating
JP2015093468A (en) * 2013-11-14 2015-05-18 吉田 稔 Method of producing regenerated resin using carpet end material

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