CN113941423A - Method for improving metal recovery rate of waste circuit board - Google Patents
Method for improving metal recovery rate of waste circuit board Download PDFInfo
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- CN113941423A CN113941423A CN202111000656.XA CN202111000656A CN113941423A CN 113941423 A CN113941423 A CN 113941423A CN 202111000656 A CN202111000656 A CN 202111000656A CN 113941423 A CN113941423 A CN 113941423A
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- metal recovery
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 100
- 239000002184 metal Substances 0.000 title claims abstract description 100
- 239000002699 waste material Substances 0.000 title claims abstract description 78
- 238000011084 recovery Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 106
- 238000012216 screening Methods 0.000 claims abstract description 46
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims 2
- 238000004891 communication Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010793 electronic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 meanwhile Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for improving the metal recovery rate of a waste circuit board, which relates to the technical field of circuit board metal recovery and comprises a crushing component and a separating component, wherein the right side of the crushing component is connected with a quantitative component, the lower end of the quantitative component is connected with a screening component, and the screening component comprises a separating bin, a fan, an air outlet pipe, an air outlet, a scrap absorbing opening, a suction fan, a guide pipe and a scrap collecting bin. The fan arranged on the two sides of the outer part of the separation bin is matched with the air outlet pipe connected with the inner part of the fan, so that metal and nonmetal screening work can be effectively carried out on the broken circuit board entering the inner part of the separation bin, the metal falls into the bottom of the separation bin after the metal enters the inner part of the separation bin, and nonmetal light scraps move to the upper part of the separation bin under the blowing action of the air outlet pipe, so that the separation effect is realized, and the air outlet pipe and the separation bin which are identical in size are matched with the inclined air outlet, so that the actual screening effect can be fully ensured.
Description
Technical Field
The invention relates to the technical field of circuit board metal recovery, in particular to a method for improving the metal recovery rate of a waste circuit board.
Background
Along with the increase of the demand of people for electronic products, the quantity of the waste circuit boards is gradually increased, which inevitably causes adverse effects on the environment, the waste circuit boards are used as important component parts of electronic wastes, the waste circuit boards contain a large amount of metal resources, including valuable metals such as silver, copper, nickel, aluminum, zinc, tin, lead and the like and base metals such as iron and the like, and the effect of recycling resources can be realized for the metal recovery of the waste circuit boards.
Most of the waste circuit board metal recovery methods in the market are chemical recovery, and the metal-containing wastewater in the recovery process is easy to cause environmental pollution and the recovery effect is not ideal enough.
Disclosure of Invention
The invention aims to provide a method for improving the metal recovery rate of a waste circuit board, and aims to solve the problems that most of the waste circuit board metal recovery methods proposed in the background technology are chemical recovery, metal-containing waste water in the recovery process is easy to pollute the environment, and the recovery effect is not ideal enough.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a method for improving old and useless circuit board metal recovery rate, includes broken subassembly and separating assembly, the right side of broken subassembly is connected with quantitative subassembly, and the lower extreme of quantitative subassembly is connected with screening subassembly, screening subassembly includes separation storehouse, fan, tuber pipe, air outlet, inhales bits mouth, suction fan, pipe and sweeps and collects the storehouse, and the outside both sides in separation storehouse are provided with the fan, one side of fan is connected with out the tuber pipe, and the upper end of going out the tuber pipe has seted up the air outlet, the inboard upper end in separation storehouse is provided with inhales the bits mouth, and inhales the upper end of bits mouth and is connected with the suction fan, the left side of suction fan is connected with the pipe, and the other end of pipe is connected with sweeps and collects the storehouse, separating assembly connects in screening subassembly's lower extreme.
Preferably, broken subassembly includes broken storehouse, broken wheel, broken motor, conveyer pipe, carries auger and conveyor motor, and the inboard in broken storehouse is provided with broken wheel, the one end of broken wheel is connected with broken motor, the lower extreme in broken storehouse is connected with the conveyer pipe, and the inboard of conveyer pipe is provided with carries the auger, the one end of carrying the auger is connected with conveyor motor.
Preferably, the crushing wheel is distributed on the inner side of the crushing bin in a horizontal shape, and the conveying pipe is vertically communicated with the crushing bin.
Preferably, the quantitative assembly comprises a quantitative bin, a large groove, a large impeller, a small groove, a small impeller and a driving motor, the large groove is arranged on the upper portion of the inner side of the quantitative bin, the large impeller is arranged on the inner side of the large groove, the small groove is arranged on the lower portion of the inner side of the quantitative bin, the small impeller is connected to the inner side of the small groove, and one end of the small impeller and one end of the large impeller are connected with the driving motor through a belt.
Preferably, the outer side of the large impeller is attached to the inner side of the large groove, and the large groove, the small groove and the quantifying bin are of an integrated structure.
Preferably, the two fans are symmetrically arranged at the center of the separation bin, the diameter of the outer side of the air outlet pipe is matched with the diameter of the inner side of the separation bin, the air outlets are equidistantly distributed at the upper end of the air outlet pipe, and the air outlets are inclined.
Preferably, the chip suction port is horizontally distributed on the inner side of the separation bin, and the chip suction port is in a communicated structure with the waste chip collection bin through the suction fan and the guide pipe.
Preferably, the separation assembly comprises a delivery pump, a connecting conduit, an electrostatic separator and a discharge port, the right side of the delivery pump is connected with the connecting conduit, the right end of the connecting conduit is connected with the electrostatic separator, and the right side of the electrostatic separator is provided with the discharge port.
Preferably, two electrostatic separators are arranged, and the two electrostatic separators are connected in parallel through a connecting conduit.
Preferably, the method for improving the metal recovery rate of the waste circuit board comprises the following specific steps:
A. crushing and feeding
The waste circuit boards to be subjected to metal recovery are placed in the crushing bin, the crushing wheels arranged in the crushing bin can effectively crush the waste circuit boards placed in the crushing bin under the driving of a crushing motor, so that the separation work of the screening assembly and the separation assembly on metal and waste circuit board scraps is facilitated, and the crushed waste circuit boards can be conveyed through the conveying pipe and the conveying auger;
B. quantitative material conveying
The crushing circuit board enters the quantitative bin through the conveying pipe, the large grooves and the small grooves are arranged at the upper part and the lower part of the inner side of the quantitative bin and are matched with the large impellers and the small impellers arranged in the quantitative bin, the crushing circuit board entering the quantitative bin can be conveyed quantitatively under the driving of the driving motor, the large impellers and the small impellers rotate clockwise, and the effect of the screening assembly on metal and nonmetal screening of the crushing circuit board can be improved through quantitative conveying;
C. preliminary screening
The device comprises a separation bin, a fan, a suction fan, a guide pipe, a dust suction port, a dust suction fan, a dust suction port, a dust suction fan, a dust suction pipe, a dust collecting bin and a dust collecting bin, wherein the crushing circuit board conveyed quantitatively enters the separation bin, the fan is arranged on two sides of the outer portion of the separation bin and is matched with an air outlet pipe connected to the inner portion of the fan, so that metal and nonmetal screening work can be effectively performed on the crushing circuit board entering the separation bin;
D. deep separation
The conveying pump arranged at the bottom of the separation bin can convey the separated metal and heavy materials, and convey the separated metal and heavy materials to the inside of the electrostatic separator through the connecting conduit, and further carry out deep separation work on the metal and nonmetal through the electrostatic separator, so that metal recovery is finally completed.
The invention provides a method for improving the metal recovery rate of a waste circuit board, which has the following beneficial effects: according to the method for improving the metal recovery rate of the waste circuit boards, the metal in the waste circuit boards can be efficiently recovered through mutual matching of the components, the waste circuit boards are crushed, so that the metal and light waste scraps are conveniently separated, the condition that the environment is polluted due to sewage discharge in the conventional chemical separation is avoided, and meanwhile, the metal recovery rate of the waste circuit boards is effectively improved;
1. according to the invention, the crushing wheel arranged in the crushing bin can be used for effectively crushing the waste circuit board placed in the crushing bin under the driving of the crushing motor, so that the separation work of the metal and the electric plate scraps by the screening component and the separation component is facilitated, the crushed waste circuit board can be conveyed by the conveying pipe and the conveying auger, the condition that the normal work of the device is influenced due to the blockage at the bottom of the crushing bin is avoided, and the continuity and the effectiveness in the metal recovery process are ensured.
2. According to the quantitative conveying device, the large grooves and the small grooves which are arranged at the upper part and the lower part of the inner side of the quantitative bin are matched with the large impellers and the small impellers which are arranged in the quantitative bin, the crushed circuit boards entering the quantitative bin can be conveyed quantitatively under the driving of the driving motor, the large impellers and the small impellers rotate clockwise, the effect of the screening assembly on screening metal and nonmetal of the crushed circuit boards can be improved through quantitative conveying, and the situation that the crushed circuit boards cannot be separated completely due to too much crushed circuit boards entering the separation bin at one time is avoided.
3. The fan arranged on the two sides of the outer part of the separation bin is matched with the air outlet pipe connected with the inner part of the fan, so that metal and nonmetal screening work can be effectively carried out on the broken circuit board entering the inner part of the separation bin, the metal falls into the bottom of the separation bin after the metal enters the inner part of the separation bin, and nonmetal light scraps move to the upper part of the separation bin under the blowing action of the air outlet pipe, so that the separation effect is realized, and the air outlet pipe and the separation bin which are identical in size are matched with the inclined air outlet, so that the actual screening effect can be fully ensured.
4. According to the invention, the chip suction port arranged at the upper part of the separation bin is matched with the suction fan connected to the outer side of the chip suction port, so that separated light waste chips can be collected, the collected light waste chips are conveyed to the interior of the waste chip collection bin through the guide pipe connected with the chip suction port, the light waste chips are conveniently and intensively treated, meanwhile, the chip suction port and the air outlet pipe work simultaneously, the continuity and effectiveness of the screening component on the crushing electric plate are ensured, and the condition that the light waste chips are accumulated in the separation bin and cannot be discharged is avoided.
5. According to the invention, the separated metal and heavy materials can be conveyed through the conveying pump arranged at the bottom of the separation bin, and are simultaneously conveyed into the electrostatic separators through the connecting guide pipes, the deep separation work of the metal and the nonmetal is further carried out through the electrostatic separators, and the two electrostatic separators which are connected in parallel ensure the metal separation effect and effectively improve the separation efficiency, and simultaneously avoid the problem of environmental pollution caused by the waste water discharged by the conventional chemical separation method, so that the method for recovering the metal from the circuit board is more environment-friendly.
Drawings
FIG. 1 is a schematic view of the overall structure of a method for increasing the metal recovery rate of a waste circuit board according to the present invention;
FIG. 2 is a schematic view of a quantitative assembly of the method for increasing metal recovery rate of waste circuit boards according to the present invention;
FIG. 3 is a schematic diagram of the internal structure of a separation bin of the method for improving the metal recovery rate of the waste circuit board;
FIG. 4 is a schematic top view of an air outlet pipe of the method for increasing the metal recovery rate of a waste circuit board according to the present invention;
fig. 5 is an enlarged schematic structural diagram of a point a in fig. 1 of the method for improving the metal recovery rate of the waste circuit board.
In the figure: 1. a crushing assembly; 101. a crushing bin; 102. a crushing wheel; 103. a crushing motor; 104. a delivery pipe; 105. conveying the auger; 106. a conveying motor; 2. a dosing assembly; 201. a quantitative bin; 202. a large groove; 203. a large impeller; 204. a small groove; 205. a small impeller; 206. a drive motor; 3. a screen assembly; 301. separating the bins; 302. a fan; 303. an air outlet pipe; 304. an air outlet; 305. a chip suction port; 306. a suction fan; 307. a conduit; 308. a waste collection bin; 4. a separation assembly; 401. a delivery pump; 402. connecting a conduit; 403. an electrostatic separator; 404. and (4) a discharge port.
Detailed Description
Referring to fig. 1-5, a method for improving the metal recovery rate of a waste circuit board includes a crushing assembly 1 and a separating assembly 4, the right side of the crushing assembly 1 is connected with a quantitative assembly 2, the lower end of the quantitative assembly 2 is connected with a screening assembly 3, the screening assembly 3 includes a separating bin 301, a fan 302, an air outlet pipe 303, an air outlet 304, a scrap suction port 305, a suction fan 306, a conduit 307 and a scrap collecting bin 308, the fans 302 are arranged on two outer sides of the separating bin 301, one side of the fan 302 is connected with the air outlet pipe 303, the air outlet 304 is arranged at the upper end of the air outlet pipe 303, the scrap suction port 305 is arranged at the upper end of the inner side of the separating bin 301, the suction fan 306 is connected at the upper end of the scrap suction port 305, the conduit 307 is connected at the left side of the suction fan 306, the scrap collecting bin 308 is connected at the other end of the conduit 307, and the separating assembly 4 is connected to the lower end of the screening assembly 3;
the specific operation is as follows, the fans 302 arranged at two sides of the outside of the separation bin 301 are matched with the air outlet pipes 303 connected with the inside of the fans 302, so that metal and nonmetal screening work can be effectively carried out on the broken circuit boards entering the inside of the separation bin 301, the metal and nonmetal screening work can fall into the bottom of the separation bin 301 due to the weight of the metal entering the inside of the separation bin 301, meanwhile, nonmetal light scraps move towards the upper part of the separation bin 301 under the blowing of the air outlet pipes 303, the separation effect is realized, the air outlet pipes 303 with identical sizes are matched with the inclined air outlet 304 of the separation bin 301, and the actual screening effect can be fully ensured;
referring to fig. 1 and 5, the crushing assembly 1 includes a crushing bin 101, a crushing wheel 102, a crushing motor 103, a conveying pipe 104, a conveying auger 105 and a conveying motor 106, wherein the crushing wheel 102 is disposed inside the crushing bin 101, one end of the crushing wheel 102 is connected with the crushing motor 103, the lower end of the crushing bin 101 is connected with the conveying pipe 104, the conveying auger 105 is disposed inside the conveying pipe 104, one end of the conveying auger 105 is connected with the conveying motor 106, the crushing wheel 102 is horizontally distributed inside the crushing bin 101, and the conveying pipe 104 is vertically communicated with the crushing bin 101;
the operation is as follows, the crushing wheel 102 arranged in the crushing bin 101 can effectively crush the waste circuit boards placed in the crushing bin 101 under the driving of the crushing motor 103, so that the separation of metal and electric plate scraps by the screening component 3 and the separation component 4 is facilitated, the crushed waste circuit boards can be conveyed through the conveying pipe 104 and the conveying auger 105, the situation that the normal operation of the device is influenced due to blockage at the bottom of the crushing bin 101 is avoided, and the continuity and effectiveness in the metal recovery process are ensured;
referring to fig. 1 and 2, the quantitative assembly 2 includes a quantitative bin 201, a large groove 202, a large impeller 203, a small groove 204, a small impeller 205 and a driving motor 206, the large groove 202 is disposed on the upper portion of the inner side of the quantitative bin 201, the large impeller 203 is disposed on the inner side of the large groove 202, the small groove 204 is disposed on the lower portion of the inner side of the quantitative bin 201, the small impeller 205 is connected to the inner side of the small groove 204, one end of the small impeller 205 and one end of the large impeller 203 are connected to the driving motor 206 through a belt, the outer side of the large impeller 203 is attached to the inner side of the large groove 202, and the large groove 202 and the small groove 204 and the quantitative bin 201 are in an integrated structure;
the operation is as follows, the big groove 202 and the small groove 204 which are arranged at the upper part and the lower part of the inner side of the quantitative bin 201 are matched with the big impeller 203 and the small impeller 205 which are arranged in the quantitative bin, the crushed circuit boards entering the quantitative bin 201 can be quantitatively conveyed under the driving of the driving motor 206, the big impeller 203 and the small impeller 205 both rotate clockwise, the quantitative conveying can improve the effect of the screening component 3 on the metal and nonmetal screening of the crushed circuit boards, and the situation that the crushed circuit boards once enter the separation bin 301 too much to cause incomplete separation is avoided;
referring to fig. 1 and fig. 4, two fans 302 are symmetrically disposed about the center of the separation bin 301, the diameter of the outer side of the air outlet pipe 303 is identical to the diameter of the inner side of the separation bin 301, the air outlets 304 are equidistantly distributed at the upper end of the air outlet pipe 303, the air outlets 304 are inclined, the scrap suction ports 305 are horizontally distributed at the inner side of the separation bin 301, and the scrap suction ports 305 are in a communicating structure with the scrap collection bin 308 through a suction fan 306 and a conduit 307;
the specific operation is as follows, the chip suction port 305 arranged at the upper part of the separation bin 301 is matched with the suction fan 306 connected to the outer side of the chip suction port 305, separated light waste chips can be collected, the collected light waste chips are conveyed to the interior of the waste chip collection bin 308 through the guide pipe 307 connected with the chip suction port, centralized treatment of the light waste chips is facilitated, meanwhile, the chip suction port 305 and the air outlet pipe 303 work simultaneously, the continuity and effectiveness of the screening component 3 for screening the crushing electric plates are guaranteed, and the situation that the light waste chips are accumulated in the separation bin 301 and cannot be discharged is avoided;
referring to fig. 1, the separation assembly 4 includes a delivery pump 401, a connecting conduit 402, an electrostatic separator 403 and a discharge port 404, the right side of the delivery pump 401 is connected with the connecting conduit 402, the right end of the connecting conduit 402 is connected with the electrostatic separator 403, the right side of the electrostatic separator 403 is provided with the discharge port 404, two electrostatic separators 403 are arranged, and the electrostatic separators 403 are connected in parallel through the connecting conduit 402;
the specific operation is as follows, the conveying pump 401 arranged at the bottom of the separation bin 301 can convey separated metal and heavy materials, the separated metal and heavy materials are simultaneously conveyed into the electrostatic separators 403 through the connecting conduits 402, the deep separation work is further carried out on the metal and the nonmetal through the electrostatic separators 403, the two electrostatic separators 403 which are connected in parallel can ensure the metal separation effect and effectively improve the separation efficiency, and simultaneously the problem of environmental pollution caused by waste water discharged by the conventional chemical separation method is avoided, so that the metal recovery method of the circuit board is more environment-friendly;
the method for improving the metal recovery rate of the waste circuit board comprises the following specific steps:
A. crushing and feeding
Waste circuit boards needing metal recovery are placed inside the crushing bin 101, the crushing wheels 102 arranged inside the crushing bin 101 can effectively crush the waste circuit boards placed inside the crushing bin 101 under the driving of the crushing motor 103, the separation work of the screening component 3 and the separation component 4 on metal and electric plate scraps is facilitated, and the crushed waste circuit boards can be conveyed through the conveying pipe 104 and the conveying auger 105;
B. quantitative material conveying
The broken circuit boards enter the quantitative bin 201 through the conveying pipe 104, the large grooves 202 and the small grooves 204 are arranged at the upper part and the lower part of the inner side of the quantitative bin 201 and are matched with the large impeller 203 and the small impeller 205 arranged inside, the broken circuit boards entering the quantitative bin 201 can be conveyed quantitatively under the driving of the driving motor 206, the large impeller 203 and the small impeller 205 both rotate clockwise, and the effect of the screening component 3 on screening metal and nonmetal of the broken circuit boards can be improved through quantitative conveying;
C. preliminary screening
The broken circuit boards conveyed quantitatively enter the separation bin 301, the fans 302 arranged on two sides of the outer portion of the separation bin 301 are matched with the air outlet pipe 303 connected to the inner portion of the fan 302, metal and nonmetal screening work can be effectively carried out on the broken circuit boards entering the inner portion of the separation bin 301, the broken circuit boards can fall into the bottom of the separation bin 301 after entering the inner portion of the separation bin 301 due to the weight of the metal, meanwhile, nonmetal light waste chips move to the upper portion of the separation bin 301 under the blowing action of the air outlet pipe 303, the separation effect is achieved, the chip suction port 305 arranged in the separation bin 301 and located at the upper portion is matched with the suction fan 306 connected to the outer side of the chip suction port 305, the separated light waste chips can be collected, and the collected light waste chips are conveyed into the waste chip collection bin 308 through the guide pipe 307 connected with the chip suction port, and centralized treatment of the light waste chips is facilitated;
D. deep separation
The conveying pump 401 arranged at the bottom of the separation bin 301 can convey the separated metal and heavy materials to the inside of the electrostatic separator 403 through the connecting conduit 402, and further carry out deep separation work on the metal and nonmetal through the electrostatic separator 403, and finally complete metal recovery.
To sum up, the method for improving the metal recovery rate of the waste circuit board comprises the steps of putting the waste circuit board to be subjected to metal recovery into a crushing bin 101, arranging a crushing wheel 102 inside the crushing bin 101, effectively crushing the waste circuit board put into the crushing bin 101 under the driving of a crushing motor 103, facilitating the separation of metal and electric plate scraps by a screening component 3 and a separation component 4, conveying the crushed waste circuit board through a conveying pipe 104 and a conveying auger 105, conveying the crushed circuit board into a quantitative bin 201 through the conveying pipe 104, arranging a large groove 202 and a small groove 204 at the upper part and the lower part inside the quantitative bin 201, matching with a large impeller 203 and a small impeller 205 arranged inside, quantitatively conveying the crushed circuit board entering the quantitative bin 201 under the driving of a driving motor 206, wherein the large impeller 203 and the small impeller 205 both rotate clockwise, quantitative conveying can improve the effect of the screening component 3 on screening metals and nonmetal of the broken circuit boards, the broken circuit boards conveyed quantitatively enter the separation bin 301, the fans 302 arranged at two sides outside the separation bin 301 are matched with the air outlet pipe 303 connected inside the fans 302, the metal and nonmetal screening work can be effectively carried out on the broken circuit boards entering the separation bin 301, the metal can fall into the bottom of the separation bin 301 after entering the separation bin 301 due to the self weight of the metal, meanwhile, the nonmetal light waste chips move towards the upper part of the separation bin 301 under the blowing of the air outlet pipe 303, the separation effect is realized, the chip suction port 305 arranged at the upper part inside the separation bin 301 is matched with the suction fan 306 connected outside the chip suction port 305, the separated light waste chips can be collected, and the collected light waste chips are conveyed to the waste chip collection bin 308 through the guide pipe 307 connected with the separation port 306, the light waste chips are conveniently centralized, the separated metal and heavy materials can be conveyed by the conveying pump 401 arranged at the bottom of the separation bin 301, and are simultaneously conveyed to the inside of the electrostatic separator 403 through the connecting conduit 402, the metal and nonmetal are further separated deeply through the electrostatic separator 403, and finally metal recovery is completed.
Claims (10)
1. The method for improving the metal recovery rate of the waste circuit board is characterized by comprising a metal recovery device, wherein the metal recovery device comprises a crushing component (1) and a separating component (4), the right side of the crushing component (1) is connected with a quantitative component (2), the lower end of the quantitative component (2) is connected with a screening component (3), the screening component (3) comprises a separating bin (301), a fan (302), an air outlet pipe (303), an air outlet (304), a chip suction port (305), a suction fan (306), a guide pipe (307) and a waste chip collecting bin (308), the fans (302) are arranged on two sides of the outside of the separating bin (301), one side of the fan (302) is connected with the air outlet pipe (303), the air outlet (304) is formed in the upper end of the air outlet pipe (303), the chip suction port (305) is formed in the upper end of the inner side of the separating bin (301), and inhale the upper end of bits mouth (305) and be connected with suction fan (306), the left side of suction fan (306) is connected with pipe (307), and the other end of pipe (307) is connected with sweeps and collects storehouse (308), separating assembly (4) are connected in the lower extreme of screening subassembly (3).
2. The method for improving the metal recovery rate of the waste circuit board is characterized in that the crushing assembly (1) comprises a crushing bin (101), a crushing wheel (102), a crushing motor (103), a conveying pipe (104), a conveying auger (105) and a conveying motor (106), the crushing wheel (102) is arranged on the inner side of the crushing bin (101), the crushing motor (103) is connected to one end of the crushing wheel (102), the conveying pipe (104) is connected to the lower end of the crushing bin (101), the conveying auger (105) is arranged on the inner side of the conveying pipe (104), and the conveying auger (106) is connected to one end of the conveying auger (105).
3. The method for improving the metal recovery rate of the waste circuit boards as claimed in claim 2, wherein the crushing wheels (102) are horizontally distributed on the inner side of the crushing bin (101), and the conveying pipe (104) is vertically communicated with the crushing bin (101).
4. The method for improving the metal recovery rate of the waste circuit board according to claim 1, wherein the quantifying assembly (2) comprises a quantifying bin (201), a large groove (202), a large impeller (203), a small groove (204), a small impeller (205) and a driving motor (206), the large groove (202) is arranged at the upper part of the inner side of the quantifying bin (201), the large impeller (203) is arranged at the inner side of the large groove (202), the small groove (204) is arranged at the lower part of the inner side of the quantifying bin (201), the small impeller (205) is connected to the inner side of the small groove (204), and one end of the small impeller (205) and one end of the large impeller (203) are connected with the driving motor (206) through a belt.
5. The method for improving the metal recovery rate of the waste circuit boards as claimed in claim 4, wherein the outer side of the large impeller (203) is attached to the inner side of the large groove (202), and the large groove (202) and the small groove (204) are integrated with the quantitative bin (201).
6. The method for improving the metal recovery rate of the waste circuit boards according to claim 1, wherein two fans (302) are symmetrically arranged about the center of the separation bin (301), the outside diameter of the air outlet pipe (303) is identical to the inside diameter of the separation bin (301), the air outlets (304) are equidistantly distributed at the upper end of the air outlet pipe (303), and the air outlets (304) are inclined.
7. The method for improving the metal recovery rate of the waste circuit board according to claim 1, wherein the scrap suction ports (305) are horizontally distributed on the inner side of the separation bin (301), and the scrap suction ports (305) are in a communication structure with the scrap collection bin (308) through a suction fan (306) and a conduit (307).
8. The method for improving the metal recovery rate of the waste circuit board as claimed in claim 1, wherein the separation assembly (4) comprises a delivery pump (401), a connecting conduit (402), an electrostatic separator (403) and a discharge port (404), the connecting conduit (402) is connected to the right side of the delivery pump (401), the electrostatic separator (403) is connected to the right end of the connecting conduit (402), and the discharge port (404) is arranged on the right side of the electrostatic separator (403).
9. The method for improving the metal recovery rate of the waste circuit boards as claimed in claim 8, wherein two electrostatic separators (403) are arranged, and the electrostatic separators (403) are connected in parallel through a connecting conduit (402).
10. The method for improving the metal recovery rate of the waste circuit boards according to the claims 1 to 9, wherein the method for improving the metal recovery rate of the waste circuit boards comprises the following specific steps:
A. crushing and feeding
Waste circuit boards needing metal recovery are placed into a crushing bin (101), a crushing wheel (102) arranged inside the crushing bin (101) can effectively crush the waste circuit boards placed into the crushing bin (101) under the driving of a crushing motor (103), so that a screening component (3) and a separation component (4) can conveniently separate metal and electric plate scraps, and the crushed waste circuit boards can be conveyed through a conveying pipe (104) and a conveying auger (105);
B. quantitative material conveying
The broken circuit boards enter the quantitative bin (201) through the conveying pipe (104), are arranged in a large groove (202) and a small groove (204) at the upper part and the lower part of the inner side of the quantitative bin (201), are matched with a large impeller (203) and a small impeller (205) which are arranged in the quantitative bin, and can be quantitatively conveyed to the broken circuit boards entering the quantitative bin (201) under the driving of a driving motor (206), the large impeller (203) and the small impeller (205) both rotate clockwise, and the quantitative conveying can improve the effect of the screening component (3) on the metal and nonmetal screening of the broken circuit boards;
C. preliminary screening
The broken circuit board through quantitative conveying gets into inside separation bin (301), set up fan (302) in separation bin (301) outside both sides, air-out pipe (303) that cooperation fan (302) internal connection has, can effectively carry out metal and nonmetal screening work to the broken circuit board that gets into separation bin (301) inside, can fall into separation bin (301) bottom after getting into separation bin (301) inside because the weight of metal oneself, non-metallic light sweeps moves to the upper portion of separation bin (301) under the blowing of air-out pipe (303) simultaneously, realize the effect of separation, set up in separation bin (301) and survey chip absorption mouth (305) on upper portion, cooperate suction fan (306) that chip absorption mouth (305) outside is connected with, can collect the light sweeps that separate, carry the light sweeps that collect to the sweeps through pipe (307) that are connected inside scrap collection bin (308), the centralized treatment of the light waste chips is convenient;
D. deep separation
The conveying pump (401) arranged at the bottom of the separation bin (301) can convey the separated metal and heavy materials, and simultaneously convey the metal and heavy materials to the inside of the electrostatic separator (403) through the connecting conduit (402), and further carry out deep separation work on the metal and nonmetal through the electrostatic separator (403), so that metal recovery is finally completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111000656.XA CN113941423A (en) | 2021-08-30 | 2021-08-30 | Method for improving metal recovery rate of waste circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111000656.XA CN113941423A (en) | 2021-08-30 | 2021-08-30 | Method for improving metal recovery rate of waste circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113941423A true CN113941423A (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111000656.XA Withdrawn CN113941423A (en) | 2021-08-30 | 2021-08-30 | Method for improving metal recovery rate of waste circuit board |
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| CN (1) | CN113941423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117920463A (en) * | 2023-12-18 | 2024-04-26 | 连云港中宇环保科技有限公司 | Separation and recovery device and recovery method for precious metals in waste circuit boards |
-
2021
- 2021-08-30 CN CN202111000656.XA patent/CN113941423A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117920463A (en) * | 2023-12-18 | 2024-04-26 | 连云港中宇环保科技有限公司 | Separation and recovery device and recovery method for precious metals in waste circuit boards |
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Application publication date: 20220118 Assignee: Jiangsu Ningda environmental protection Co.,Ltd. Assignor: CHANGZHOU INSTITUTE OF TECHNOLOGY Contract record no.: X2022980006597 Denomination of invention: A method to improve the metal recovery rate of waste circuit board License type: Common License Record date: 20220527 |
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Application publication date: 20220118 |