CN102671916B - Recycling processing technology for waste circuit board - Google Patents
Recycling processing technology for waste circuit board Download PDFInfo
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- CN102671916B CN102671916B CN201210157110.XA CN201210157110A CN102671916B CN 102671916 B CN102671916 B CN 102671916B CN 201210157110 A CN201210157110 A CN 201210157110A CN 102671916 B CN102671916 B CN 102671916B
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- 239000002699 waste material Substances 0.000 title claims abstract description 28
- 238000004064 recycling Methods 0.000 title abstract description 10
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000004033 plastic Substances 0.000 claims abstract description 28
- 229920003023 plastic Polymers 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000005484 gravity Effects 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011135 tin Substances 0.000 claims abstract description 11
- 229910052718 tin Inorganic materials 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 239000010931 gold Substances 0.000 claims abstract description 8
- 239000002023 wood Substances 0.000 claims abstract description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052737 gold Inorganic materials 0.000 claims abstract description 7
- 239000011133 lead Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 16
- 239000008187 granular material Substances 0.000 claims description 13
- 238000007885 magnetic separation Methods 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 12
- 238000013467 fragmentation Methods 0.000 claims description 11
- 238000006062 fragmentation reaction Methods 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 11
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000008202 granule composition Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002341 toxic gas Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 2
- 239000011707 mineral Substances 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 229910000510 noble metal Inorganic materials 0.000 abstract 1
- 239000008188 pellet Substances 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- -1 Au Ag Pt Pd Chemical class 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/78—Recycling of wood or furniture waste
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a recycling processing technology for a waste circuit board and relates to the recycling processing technology for waste resources. The recycling processing technology comprises the following steps of: cutting wastes; manually separating; removing gold; removing tin; primarily crushing; magnetically separating; secondarily crushing; separating by vibrating; separating through airflow; crushing pellets; separating according to specific gravity; compounding plastic and wood; and lastly, respectively recycling the matters, such as gold, silver, aluminum, iron, tin, copper, lead, plastic and resins, thereby reusing the matters. The recycling processing technology has the advantages that: (1) the flow line production operation is realized, the degree of automation is high and the yield is high; (2) compared with the traditional processing method, the recycling processing technology effectively reduces the emission of toxic gas and water and improves the environmental protection index; and (3) various matters in the waste circuit board are more effectively separated, the noble metal is recycled, the recycling of resources is realized, the mineral resource exploitation and wood felling are indirectly reduced, and the energy consumption and pollution during the processes of mineral resource exploitation and metallurgy processing are reduced.
Description
Technical field
The present invention relates to a kind of processing recycling technique of waste and old resource, relate in particular to a kind of waste printed circuit board and process recovery process.
Background technology
The update cycle of electronic product constantly shortens at present, a large amount of electronic products is scrapped and is become electron wastes reaching after service life, and wherein wiring board is the most unmanageable parts, once deal with improperly, stack arbitrarily or landfill, often pollute to surrounding environment.And in the constituent of wiring board, conventionally contain the metal of a large amount of reproducible utilizations, and as copper, iron, lead, tin, nickel etc., also comprise the valuable and rare metals such as Au Ag Pt Pd, nonmetal also have plastics, epoxy resin, phenolic resins, glass fibre etc.The technique of process circuit plate mainly adopts two kinds of methods at present, one is chemical method, by burning, calcination, sintering, melting, sweat and the process such as react in high temperature gas phase, it is the common method of removing plastic components and other organic components in waste printed circuit board, thereby reach the object of extracting precious metal and base metal, but the organic principle in this chemical method runs off because of volatilization and deslagging, the yield of the metal such as tin, platinum, aluminum and zinc is very low or almost cannot reclaim simultaneously.In addition, this chemical treatment method automaticity is lower, in the pyrometallurgical process wherein relating to, can produce large quantity of exhaust gas, waste residue and also serious threat Environmental security of waste water; Another kind is biological method, reclaimed the gold in gold-plated wiring board waste product as abroad once studied by biofiltration process, waste product is with comprising ferric ion and Bacteria Culture, pH<2.5, the filtered fluid processing that temperature is 20 ~ 35 ℃, through about 50 hours, 97% gold reclaims with the form of thin slice, de-plating maintains the original state mostly, easily further separate, and filtrate can again be reclaimed use after bacterial reduction.The major advantage of this biotechnology is simple, cheap and easily operation, but its topmost defect is that the leaching time is long, and filtrate recovery is used difficulty, is difficult to promote the use of and yield poorly down.
Summary of the invention
Goal of the invention of the present invention is to overcome the defect of prior art and the pipelining that a kind of automaticity is high is provided, and can manage to improve Yield and quality concentratedly, reduces the waste printed circuit board of environmental pollution, reduction energy consumption and processes recovery process.
Goal of the invention of the present invention realizes by following technical proposal:
A kind of waste printed circuit board is processed recovery process, and this technique comprises the following steps:
(1) waste material cutting: adopt cutting machine waste printed circuit board to be implemented to cutting process, separating electronic components and substrate;
(2) artificial separation: adopt manual operation that electronic component residual on substrate is removed;
(3) degold: by step (1) with step (2) in isolated electronic component concentrate and send into degold equipment, and isolate respectively gold, silver, aluminium, plastics and resin and preserve;
(4) detin: the substrate that step is removed after electronic component in is (2) sent in detin stove, toasts with 232 ℃ ~ 242 ℃ of temperature in stove, is melted into tin and liquidly separates with substrate, and liquid tin flows in gathering-device and collects;
(5) primary breakup: by step (4) the substrate after detin send in single roll crusher, crushing cutter goes out volume 20 ~ 30mm with the rotary speed fragmentation of 40 ~ 50 revs/min
3lump material;
(6) magnetic separation: by conveyer belt with the transfer rate of 0.3 ~ 0.5 meter per second by step (5) the lump material after primary breakup be delivered to hammer mill, and on conveyer belt, magneticly elect in advance metallic iron and ferrous material in course of conveying, and collect respectively;
(7) secondary breakup: step (6) other lump material of magnetic separation is sent in hammer mill, and crushing cutter goes out volume 0.5 ~ 10mm with the rotary speed fragmentation of 800 ~ 850 revs/min
3granulate mixture;
(8) vibrate sorting: the step (7) granulate mixture after secondary breakup is sent into triple unit vibration screen and vibrated respectively sorting, 50 hertz of this vibratory sieve frequencies, amplitude 2 ~ 3mm, isolating successively upper strata volume is 3 ~ 18mm
3bulky grain mixture, middle level volume be 2 ~ 3mm
3granule mixture and lower floor's volume be 1 ~ 2mm
3molecule mixture;
(9) pneumatic separation: be 3 ~ 18mm by upper strata volume
3bulky grain mixture send in airflow separator, this airflow separator with air quantity 35 ~ 14m3/ divide, air pressure 8000 ~ 8531 handkerchiefs, isolate respectively bulky grain copper and plastics, resin, copper and the plumbous granulate mixture mixing mutually, this bulky grain copper is collected by gathering-device;
(10) granulation fragmentation: the step plastics that (9) middle pneumatic separation goes out, resin, copper and the plumbous granulate mixture mixing mutually are automatically sucked and are delivered in comminutor by Fan pipeline, and crushing cutter grinds out volume as 1 ~ 2mm take the rotary speed of 800 ~ 850 revs/min
3molecule mixture;
(11) gravity separation: by step (10) in obtain volume be 1 ~ 2mm
3molecule mixture, and step (8) in obtain volume be 2 ~ 3mm
3granule mixture, volume be 1 ~ 2mm
3molecule mixture all send in specific gravity separator, this specific gravity separator is with 10 ° ~ 60 ° of 10 ~ 50 hertz of vibration frequencies, amplitude 10 ~ 30mm, gradient, sorting copper, lead, plastics and resin respectively;
(12) mould wood compound: the plastics that step is sub-elected in are (11) sent into and moulded wooden production line and make novel plastic wood composite reproducible material.
The ferrous material that magneticly elects in described (6) magnetic separation process of step drops into and in the single roll crusher of step in (5), carries out again carrying out magnetic separation again on the broken and step conveyer belt in (6), until magneticly elect metallic iron completely.
Described (6) magnetic separation process of step is that belt tramp iron separator is installed above conveyer belt.
Described single roll crusher carries out primary breakup, hammer mill and carries out secondary breakup and specific gravity separator while carrying out gravity separation, need carry out respectively dust removal process, and obtaining metal dust and plastic powders, the blower fan in this cleaner is selected 22 kilowatts, 25610 ~ 36417 cubic meters/hour of flows, pressure 1787 ~ 1381 handkerchiefs.
Compared with prior art, the present invention mainly possesses following advantage: one, realize streamline production operation, automaticity is high, and output is high; Two, compared with traditional treatment method, effectively reduce the discharge of toxic gas, water body, improve environmental protection index; Three, more effectively separate the various materials in waste printed circuit board, reclaim precious metal, realize resource regeneration and recycle, indirectly reduce mining, trees felling, reduces energy consumption and pollution in mining metallurgical processing process.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
The specific embodiment
Below in conjunction with above-mentioned accompanying drawing and adopt specific embodiment to be described in detail again the present invention.
As shown in Figure 1, this waste printed circuit board processing recovery process mainly comprises following step:
(1) waste material cutting: waste printed circuit board is concentrated and adopted semi auto cutting machine to implement cutting process, and electronic component and substrate are carried out to initial gross separation;
(2) artificial separation: the substrate that (1) step is also remained to portions of electronics element after initial gross separation adopts and manually carries out manual dismounting;
(3) degold: the electronic component that (2) (1) step collected with step is isolated respectively gold, silver, aluminium, plastics and resin by degold equipment and preserved, according to the constituent difference of electronic component, also can therefrom isolate other precious metals such as platinum, palladium, zinc;
(4) detin: step is removed to substrate after electronic component in (2) and put into detin stove and toast detin, this detin stove adopts electrothermal tube heating, make temperature in stove reach 237 ℃, 231.5 ℃ of fusing points that exceeded tin can make the soldering of substrate back be melted into liquid state, baking time, until liquid tin separates completely with substrate, then flows into liquid tin in gathering-device and reclaims;
(5) primary breakup: by step (4) the substrate after detin send in single roll crusher, crushing cutter material is 42CrMo, hardness 54-60HRC, and carry out primary breakup with the rotary speed of 40 revs/min, this single roll crusher has blanking net structure, in the time that material size is less than blanking net aperture, can fall from blanking net, can fragmentation filter out volume 20 ~ 30mm through the blanking net of single roll crusher
3lump material; In the time that single roll crusher carries out primary breakup, also need to carry out dust removal process, and obtain metal dust and plastic powders, the blower fan in this cleaner is selected 22 kilowatts, 25610 ~ 36417 cubic meters/hour of flows, pressure 1787 ~ 1381 handkerchiefs;
(6) magnetic separation: by conveyer belt with the transfer rate of 0.3 ~ 0.5 meter per second by step (5) the lump material after primary breakup be delivered to hammer mill, this conveyer belt top is provided with belt tramp iron separator, can in lump material course of conveying, magneticly elect in advance on conveyer belt metallic iron and ferrous material; This metallic iron is directly collected by gathering-device, this ferrous material centralized collection is in Turnover Box, then also can put into step single roll crusher (5) and carry out again broken and carry out magnetic separation again on step conveyer belt (6), until magneticly elect most of metallic iron;
(7) secondary breakup: by through step (6) other lump material of magnetic separation send in hammer mill, crushing cutter material is surfacing welded composite wear-resistant material, hardness 58-60HRC, and carry out secondary breakup with the rotary speed of 800 revs/min, this hammer mill has blanking net structure, in the time that the material size after fragmentation is less than blanking net aperture, can fall from blanking net, can fragmentation filter out volume 0.5 ~ 10mm through the blanking net of hammer mill
3granulate mixture; In the time that hammer mill carries out secondary breakup, also need to carry out dust removal process, and obtain metal dust and plastic powders, the blower fan in this cleaner is selected 22 kilowatts, 25610 ~ 36417 cubic meters/hour of flows, pressure 1787 ~ 1381 handkerchiefs;
(8) vibrate sorting: by step (7) the granulate mixture after secondary breakup send into triple unit vibration screen and carry out sorting; in this triple unit vibration screen, multilayer screen cloth is housed; aperture is descending; arrange from top to bottom; this granulate mixture enters from the top; due to size difference; just filtered out by different screen clothes; and enter respectively the outlet of different levels; namely carry out respectively the vibration sorting of the upper, middle and lower; the frequency of this triple unit vibration screen is 50 hertz, amplitude 2 ~ 3mm, and to sub-elect respectively upper strata volume be 3 ~ 18mm
3bulky grain mixture, middle level volume is 2 ~ 3mm
3with lower floor volume be 1 ~ 2mm
3molecule mixture;
(9) pneumatic separation: by step (8) upper strata volume be 3 ~ 18mm
3bulky grain mixture send in airflow separator, this airflow separator mainly refers to Z-type separator, 7.5 kilowatts of power, air quantity 35 ~ 14m3/ divide, air pressure 8000 ~ 8531 handkerchiefs, when bulky grain mixture is sent into after the passage of airflow separator, external blower fan gives necessarily suction upwards, be subject to suction affects, plastics that weight is lighter, resin, copper and the plumbous granulate mixture mixing are mutually sucked away through Fan pipeline, and bulky grain copper falls in gathering-device with Action of Gravity Field and collects;
(10) granulation fragmentation: the step plastics that (9) middle pneumatic separation goes out, resin, copper and the plumbous granulate mixture mixing mutually are automatically sucked and delivered in comminutor by Fan pipeline; crushing cutter material is HARDOX 400, hardness 58-60HRC, and grinds out volume as 1 ~ 2mm take the rotary speed of 800 revs/min
3molecule mixture, now can realize metal and separate with nonmetallic organizing;
(11) gravity separation: by step (10) in obtain volume be 1 ~ 2mm
3molecule mixture, and step (8) in obtain volume be 2 ~ 3mm
3granule mixture, volume be 1 ~ 2mm
3molecule mixture all send in specific gravity separator, described specific gravity separator is that one is vibrated and airflow function according to material phsyical density characteristic, thereby realize the plant equipment that mixed material separates, 10 ~ 50 hertz of the vibration frequencies of this specific gravity separator, amplitude 10 ~ 30mm, 10 ° ~ 60 ° of gradients, this procedure is mainly realized copper, plumbous metal and the plastics of waiting, the separation of the non-metal mixtures such as resin, wherein copper, lead waits metal also can send into specific gravity separator again and again separates, to obtain more pure copper, the plumbous metal that waits, then send into smelting furnace and carry out melting, can be made into copper ingot, the raw materials such as lead pig, in the time that specific gravity separator carries out gravity separation, also need to carry out dust removal process, and obtain metal dust and plastic powders, the blower fan in this cleaner is selected 22 kilowatts, 25610 ~ 36417 cubic meters/hour of flows, pressure 1787 ~ 1381 handkerchiefs,
(12) mould wood compound: the plastics that step is sub-elected in are (11) sent into and moulded wooden production line and make novel plastic wood composite reproducible material, can replace timber, for building, the fields such as furniture.
This waste printed circuit board is processed recovery process and is carried out primary breakup, hammer mill at single roll crusher and carry out secondary breakup and specific gravity separator while carrying out gravity separation, all need to be equipped with cleaner for absorbing material fragmentation, dividing and choose produced dust, in its dust, also contain a certain amount of metal, plastic powders, can be for recycling, the discharge after dedusting all can reach discharging standards index.
The present invention can realize the processing of the large small circuit board such as various PC wiring boards, household electrical appliances, mobile phone, toy and reclaim, and its adopts physical method also to process by pipeline processes, thereby realizes separating of metallics and nonmetallic substance.
Claims (4)
1. waste printed circuit board is processed a recovery process, it is characterized in that this technique comprises the following steps:
(1) waste material cutting: adopt cutting machine waste printed circuit board to be implemented to cutting process, separating electronic components and substrate;
(2) artificial separation: adopt manual operation that electronic component residual on substrate is removed;
(3) degold: by step (1) with step (2) in isolated electronic component concentrate and send into degold equipment, and isolate respectively gold, silver, aluminium, plastics and resin and preserve;
(4) detin: the substrate that step is removed after electronic component in is (2) sent in detin stove, toasts with 232 ℃ ~ 242 ℃ of temperature in stove, is melted into tin and liquidly separates with substrate, and liquid tin flows in gathering-device and collects;
(5) primary breakup: by step (4) the substrate after detin send in single roll crusher, crushing cutter goes out volume 20 ~ 30mm with the rotary speed fragmentation of 40 ~ 50 revs/min
3lump material;
(6) magnetic separation: by conveyer belt with the transfer rate of 0.3 ~ 0.5 meter per second by step (5) the lump material after primary breakup be delivered to hammer mill, and on conveyer belt, magneticly elect in advance metallic iron and ferrous material in course of conveying, and collect respectively;
(7) secondary breakup: step (6) other lump material of magnetic separation is sent in hammer mill, and crushing cutter goes out volume 0.5 ~ 10mm with the rotary speed fragmentation of 800 ~ 850 revs/min
3granulate mixture;
(8) vibrate sorting: the step (7) granulate mixture after secondary breakup is sent into triple unit vibration screen and vibrated respectively sorting, 50 hertz of this vibratory sieve frequencies, amplitude 2 ~ 3mm, isolating successively upper strata volume is 3 ~ 18mm
3bulky grain mixture, middle level volume be 2 ~ 3mm
3granule mixture and lower floor's volume be 1 ~ 2mm
3molecule mixture;
(9) pneumatic separation: be 3 ~ 18mm by upper strata volume
3bulky grain mixture send in airflow separator, this airflow separator with air quantity 35 ~ 14m3/ divide, air pressure 8000 ~ 8531 handkerchiefs, isolate respectively bulky grain copper and plastics, resin, copper and the plumbous granulate mixture mixing mutually, this bulky grain copper is collected by gathering-device;
(10) granulation fragmentation: the step plastics that (9) middle pneumatic separation goes out, resin, copper and the plumbous granulate mixture mixing mutually are automatically sucked and are delivered in comminutor by Fan pipeline, and crushing cutter grinds out volume as 1 ~ 2mm take the rotary speed of 800 ~ 850 revs/min
3molecule mixture;
(11) gravity separation: by step (10) in obtain volume be 1 ~ 2mm
3molecule mixture, and step (8) in obtain volume be 2 ~ 3mm
3granule mixture, volume be 1 ~ 2mm
3molecule mixture all send in specific gravity separator, this specific gravity separator is with 10 ° ~ 60 ° of 10 ~ 50 hertz of vibration frequencies, amplitude 10 ~ 30mm, gradient, sorting copper, lead, plastics and resin respectively;
(12) mould wood compound: the plastics that step is sub-elected in are (11) sent into and moulded wooden production line and make novel plastic wood composite reproducible material.
2. waste printed circuit board according to claim 1 is processed recovery process, it is characterized in that the ferrous material magneticly electing in described (6) magnetic separation process of step drops into carries out again in the single roll crusher of step in (5) carrying out magnetic separation again on the broken and step conveyer belt in (6), until magneticly elect metallic iron completely.
3. waste printed circuit board according to claim 1 is processed recovery process, it is characterized in that described (6) magnetic separation process of step is that belt tramp iron separator is installed above conveyer belt.
4. waste printed circuit board according to claim 1 is processed recovery process, it is characterized in that described single roll crusher carries out primary breakup, hammer mill and carries out secondary breakup and specific gravity separator while carrying out gravity separation, need carry out respectively dust removal process, and obtaining metal dust and plastic powders, the blower fan in this cleaner is selected 22 kilowatts, 25610 ~ 36417 cubic meters/hour of flows, pressure 1787 ~ 1381 handkerchiefs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210157110.XA CN102671916B (en) | 2012-05-21 | 2012-05-21 | Recycling processing technology for waste circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210157110.XA CN102671916B (en) | 2012-05-21 | 2012-05-21 | Recycling processing technology for waste circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102671916A CN102671916A (en) | 2012-09-19 |
| CN102671916B true CN102671916B (en) | 2014-05-28 |
Family
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Family Applications (1)
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| CN201210157110.XA Active CN102671916B (en) | 2012-05-21 | 2012-05-21 | Recycling processing technology for waste circuit board |
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Denomination of invention: Recycling processing technology for waste circuit board Effective date of registration: 20191029 Granted publication date: 20140528 Pledgee: Ningbo Tianjin Enterprise Service Co., Ltd. Pledgor: Ningbo Hui Long regenerated resource Polytron Technologies Inc Registration number: Y2019330000145 |
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Denomination of invention: Recycling process of waste printed circuit board Effective date of registration: 20201027 Granted publication date: 20140528 Pledgee: Ningbo Tianjin Enterprise Service Co.,Ltd. Pledgor: NINGBO HUILONG RENEWABLE RESOURCES TECHNOLOGY Co.,Ltd. Registration number: Y2020330000846 |