CN108531737B - Comprehensive treatment system for copper-containing sludge and circuit board - Google Patents
Comprehensive treatment system for copper-containing sludge and circuit board Download PDFInfo
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- CN108531737B CN108531737B CN201810433295.XA CN201810433295A CN108531737B CN 108531737 B CN108531737 B CN 108531737B CN 201810433295 A CN201810433295 A CN 201810433295A CN 108531737 B CN108531737 B CN 108531737B
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- copper
- smelting
- supply device
- side wall
- circuit board
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 116
- 239000010949 copper Substances 0.000 title claims abstract description 116
- 239000010802 sludge Substances 0.000 title claims abstract description 79
- 238000003723 Smelting Methods 0.000 claims abstract description 144
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000002699 waste material Substances 0.000 claims abstract description 81
- 238000007664 blowing Methods 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 239000000446 fuel Substances 0.000 claims abstract description 28
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 238000005469 granulation Methods 0.000 claims abstract description 16
- 230000003179 granulation Effects 0.000 claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 73
- 239000003546 flue gas Substances 0.000 claims description 69
- 239000002893 slag Substances 0.000 claims description 52
- 239000007789 gas Substances 0.000 claims description 43
- 238000005352 clarification Methods 0.000 claims description 25
- 238000011084 recovery Methods 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 17
- 239000002480 mineral oil Substances 0.000 claims description 17
- 235000010446 mineral oil Nutrition 0.000 claims description 17
- 230000004907 flux Effects 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 12
- 238000006477 desulfuration reaction Methods 0.000 claims description 11
- 230000023556 desulfurization Effects 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000003245 coal Substances 0.000 claims description 10
- 239000000571 coke Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000000153 supplemental effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 47
- 230000008569 process Effects 0.000 abstract description 21
- 238000005265 energy consumption Methods 0.000 abstract description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 description 34
- 239000002184 metal Substances 0.000 description 34
- 239000007788 liquid Substances 0.000 description 20
- 239000002245 particle Substances 0.000 description 14
- 238000002386 leaching Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 239000010453 quartz Substances 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 239000003818 cinder Substances 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 10
- 229910052683 pyrite Inorganic materials 0.000 description 10
- 239000011028 pyrite Substances 0.000 description 10
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 10
- 239000004575 stone Substances 0.000 description 10
- 238000006722 reduction reaction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000010793 electronic waste Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0056—Scrap treating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a comprehensive treatment system for copper-containing sludge and a circuit board. The integrated processing system includes: the copper-containing sludge granulation unit comprises a copper-containing sludge supply device and a first waste activated carbon supply device which are connected with the granulation device; a circuit board supply unit; and a side-blown smelting unit comprising a side-blown smelting furnace having a feed inlet and a fuel side-blown inlet, the granulating device and the circuit board supply unit being connected to the feed inlet. Copper-containing sludge and waste activated carbon are respectively provided by utilizing a copper-containing sludge supply device and a first waste activated carbon supply device, then the copper-containing sludge and the waste activated carbon are mixed and granulated, the waste activated carbon is used as a reducing agent and a part of combustion agent, and after granulation, the waste activated carbon and a circuit board are subjected to side-blown smelting in a side-blown smelting unit, so that the energy consumption cost of the side-blown smelting is reduced; the circuit board generates heat by burning organic matters in the process of side-blowing smelting, and the organic matters can be further used as fuel for side-blowing smelting, so that the energy consumption cost is reduced.
Description
Technical Field
The invention relates to the field of metal recovery, in particular to a comprehensive treatment system for copper-containing sludge and a circuit board.
Background
With the acceleration of updating of electronic and electric products, the average service life of the products is shortened. In China, about 1500 ten thousand large household appliances such as color TV air conditioners are scrapped every year, tens of millions of mobile phones are eliminated, and the electronic waste is increased by 5% -8% every year. The waste printed circuit board which needs to be disposed of every year in China is more than 50 ten thousand tons. The printed circuit board mainly comprises metal, organic matters and oxides, wherein the metal is less than or equal to 50 percent, including Cu, fe, ni, sn, pb, al, zn and the like.
In order to treat heavy metal wastewater generated in the industries of electroplating, manufacturing, printing and dyeing and the like, a large amount of copper-containing sludge is generated by related environmental protection units or enterprises each year. Under natural conditions, heavy metals in the randomly stacked copper-containing sludge are likely to dissolve out and enter water or soil again to cause secondary pollution. In addition, the content of valuable metallic copper in the sludge is far higher than the exploitation grade of copper ores, and the sludge has high utilization value.
Therefore, the waste circuit board and the copper-containing sludge have rich valuable metal content, and the waste circuit board and the copper-containing sludge can cause great waste of resources.
Common methods for recovering valuable metals from waste circuit boards are heat treatment and chemical treatment. The heat treatment process includes an incineration process and a thermal pyrolysis process. The heat treatment methods which are industrially practically used are shaft furnaces, blast furnaces, reverberatory furnaces and rotary kiln incineration methods. The method utilizes the high temperature of a metallurgical furnace to directly burn organic matters in a circuit board, melts valuable metals, forms slag with inorganic nonmetallic substances, and separates the slag to obtain a coarse metal ingot. The chemical treatment method needs extraction, precipitation, displacement filtration, distillation impurity removal, electrolysis and other procedures, has long process flow, and has the problems of secondary pollution of leachate and residues, need of retreatment of a matrix and the like.
The current recovery methods of valuable metals in copper-containing sludge mainly comprise an acid leaching method, an ammonia leaching method and a high-temperature smelting method. The main process of the acid leaching method is to leach valuable metals in the copper-containing sludge by sulfuric acid, hydrochloric acid or nitric acid and the like. The acid leaching method has the defects of high leaching efficiency, difficulty in separating various metals by simultaneous leaching, serious corrosion to equipment and poor operation environment. Ammonia leaching method generally adopts ammonia water solution as leaching agent, and carries out complex reaction with copper and nickel in sludge to obtain leaching solution, and then valuable metals are recovered. The ammonia leaching method has good selectivity to valuable metals such as copper, nickel and the like, but has high requirements on the sealing performance of the device, and the leaching liquid is easy to volatilize and has great harm to the environment. The high-temperature smelting method mainly heats the sludge to about 1300 ℃ in a blast furnace, and adds a reducing agent and a slag former to make valuable metals melt and reduce and oxide slag to obtain blister copper, and the method has higher energy consumption.
Disclosure of Invention
The invention mainly aims to provide a comprehensive treatment system for copper-containing sludge and a circuit board, which aims to solve the problem of high recovery cost of copper-containing sludge and metal in the circuit board in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided an integrated treatment system for copper-containing sludge and a wiring board, the integrated treatment system comprising: the copper-containing sludge granulation unit comprises a copper-containing sludge supply device and a first waste activated carbon supply device which are connected with the granulation device; a circuit board supply unit; and a side-blown smelting unit comprising a side-blown smelting furnace having a feed inlet and a fuel side-blown inlet, the granulating device and the circuit board supply unit being connected to the feed inlet.
Further, the side-blown smelting unit comprises a waste mineral oil supply device and an oxygen-enriched air supply device, and the waste mineral oil supply device and the oxygen-enriched air supply device are connected with the fuel side-blown port.
Further, the side-blown smelting unit further comprises a slag former supply device, wherein the slag former supply device is connected with the feed inlet, and the slag former supply device is preferably an iron-containing waste residue supply device.
Further, the side-blown smelting unit further comprises a flux supply device, and the flux supply device is connected with the feed inlet.
Further, the side-blown smelting unit further comprises a supplementary heat source supply device, the supplementary heat source supply device is connected with the fuel side-blown port, and preferably the supplementary heat source supply device comprises a supply device of second waste activated carbon powder, pulverized coal and oxygen-enriched air.
Further, the side-blown smelting furnace includes: a bottom wall divided into a smelting area and a clarifying area which are communicated with each other; a first side wall connected to the bottom wall, the fuel side lance being disposed on the first side wall of the smelting zone, preferably in the lower half of the first side wall; a top wall; the top wall is connected with the first side wall, the bottom wall, the first side wall and the top wall form a furnace chamber, and the feed inlet is arranged on the top wall of the smelting area; and the second side wall is connected with the top wall and extends upwards, the second side wall encloses a flue gas outlet connected with the furnace chamber, and the clarification area and the feeding hole are arranged on two sides of the flue gas outlet.
Further, the top wall height of the smelting area is greater than the top wall height of the clarification area, and the side-blown smelting furnace further comprises: the first side wall is arranged between the feed inlet and the flue gas outlet, is connected with the top wall and extends downwards, and a space is reserved between the first side wall and the bottom wall; a second side wall; the second side wall is arranged between the clarification area and the flue gas outlet, is connected with the top wall and extends downwards, and a space is reserved between the second side wall and the bottom wall.
Further, a reducing feed port is further arranged on the top wall of the clarification area, the side-blown smelting unit further comprises a reducing agent supply device, the reducing agent supply device is connected with the reducing feed port, and preferably the reducing agent supply device is a third waste activated carbon supply device, a coke supply device or a lump coal supply device.
Further, secondary air inlets are formed in the first side wall and the second side wall.
Further, the clarification area is further provided with a heating device, preferably an electrode, which is arranged on the top wall.
Further, the integrated treatment system further comprises a flue gas treatment unit, wherein the flue gas treatment unit comprises a combustor, and the combustor is connected with the flue gas outlet.
Further, the above-mentioned combustor has a combustion exhaust outlet, and the flue gas treatment unit further includes: the waste heat recovery device is provided with a combustion tail gas inlet and a cooling tail gas outlet, and the combustion tail gas inlet is connected with the combustion tail gas outlet; the dioxin removing device is provided with a cooling tail gas inlet and an adsorption purified gas outlet, and the cooling tail gas inlet is connected with the cooling tail gas outlet; the desulfurization device is provided with an adsorption purification gas inlet and an evacuation port, and the adsorption purification gas inlet is connected with the adsorption purification gas outlet.
Further, the above-mentioned wiring board supply unit includes: the tin-removing welding device is used for carrying out tin-removing welding treatment on the circuit board; and the crushing device is connected with the tin-removing welding device to crush the circuit board subjected to tin-removing welding, and the crushing device is connected with the feed inlet of the side-blowing smelting unit.
By applying the technical scheme of the invention, the copper-containing sludge supply device and the first waste activated carbon supply device are utilized to respectively supply the copper-containing sludge and the waste activated carbon, then the copper-containing sludge and the waste activated carbon are mixed and granulated, the waste activated carbon is used as a reducing agent and a part of combustion agent, and after granulation, the waste activated carbon and the circuit board are subjected to side-blown smelting in the side-blown smelting unit, so that the energy consumption cost of the side-blown smelting is reduced; in addition, the circuit board generates heat by burning organic matters in the process of side-blowing smelting, and the organic matters can be further used as fuel for side-blowing smelting, so that not only is separation of copper-containing sludge and copper metal in the circuit board and other impurities completed, but also the heat energy of the organic matters in the circuit board is fully utilized, and the energy consumption cost of side-blowing smelting is further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 illustrates a block diagram of an integrated processing system provided in accordance with a preferred embodiment of the present invention;
FIG. 2 shows a schematic view of a side-blown smelting furnace according to yet another preferred embodiment of the invention;
FIG. 3 is a schematic flow chart of an implementation of the integrated processing method according to a preferred embodiment of the present invention; .
Wherein the above figures include the following reference numerals:
10. a copper-containing sludge granulation unit;
20. a circuit board supply unit; 21. a solder stripping device; 22. a crushing device;
30. a side-blown smelting unit; 01. a feed inlet; 02. a fuel side blow port; 03. a flue gas outlet; 04. a reduction feed inlet; 05. a secondary air inlet; 31. a side-blown smelting furnace; 311. a bottom wall; 312. a first sidewall; 313. a top wall; 314. a second sidewall; 315. a first side wall; 316. a second side wall; 317. a heating device; 32. a waste mineral oil supply device; 33. an oxygen enriched air supply device; 34. a slag former supply device; 35. flux supply means; 36. a supplemental heat source supply device; 37. a reducing agent supply device;
40. a flue gas treatment unit; 41. a burner; 42. a waste heat recovery device; 43. a dioxin removing device; 44. a desulfurizing device.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
As described in the background art of the present application, in order to solve the problem that the recovery cost of copper-containing sludge and metals in the circuit board is high in the prior art, the present application provides an integrated treatment system for copper-containing sludge and circuit board, which comprises a copper-containing sludge granulation unit 10, a circuit board supply unit 20 and a side-blown smelting unit 30, as shown in fig. 1, wherein the copper-containing sludge granulation unit 10 comprises a copper-containing sludge supply device and a first waste activated carbon supply device connected to a granulation device; the side-blown smelting unit 30 includes a side-blown smelting furnace 31, the side-blown smelting furnace 31 having a feed port 01 and a fuel side-blown port 02, and the granulating apparatus and wiring-board supply unit 20 are connected to the feed port 01.
The copper-containing sludge supply device and the first waste activated carbon supply device are utilized to respectively provide copper-containing sludge and waste activated carbon, then the copper-containing sludge and the waste activated carbon are mixed and granulated, the waste activated carbon is used as a reducing agent and a part of combustion agent, and after granulation, the waste activated carbon and the circuit board are subjected to side-blown smelting in the side-blown smelting unit 30, so that the energy consumption cost of the side-blown smelting is reduced; in addition, the circuit board generates heat by burning organic matters in the process of side-blowing smelting, and the organic matters can be further used as fuel for side-blowing smelting, so that not only is separation of copper-containing sludge and copper metal in the circuit board and other impurities completed, but also the heat energy of the organic matters in the circuit board is fully utilized, and the energy consumption cost of side-blowing smelting is further reduced.
In order to further reduce the cost of copper-containing sludge and metal recovery from the circuit board, it is preferable that the above-described side-blown smelting unit 30 includes a waste mineral oil supply device 32 and an oxygen-enriched air supply device 33, as shown in fig. 1, both of which are connected to the fuel side-blowing port 02. The use of the waste mineral oil supply device 32 to supply waste mineral oil as fuel replaces natural gas commonly used in the prior art, reducing energy costs.
In order to improve the separation efficiency, it is preferable that the side-blown smelting unit 30 further includes a slag former supply device 34 as shown in fig. 1, and the slag former supply device 34 is connected to the feed port 01, and preferably the slag former supply device 34 is an iron-containing slag supply device. Providing the slag former with the slag former supply 34 improves slag tapping efficiency, and further saves the cost of the slag former when the iron-containing slag supply is selected.
In addition, in order to improve smelting efficiency, it is preferable that the above-described side-blown smelting unit 30 further includes a flux supply device 35, as shown in fig. 1, the flux supply device 35 being connected to the feed port 01. Quartz stone and limestone are supplied as fluxes to the side-blown smelting furnace 31 by the above-described flux supply device 35.
In a preferred embodiment of the present application, in order to ensure stability of the side-blown smelting temperature, it is preferable that the side-blown smelting unit 30 further comprises a supplementary heat source supply device 36 as shown in fig. 1, wherein the supplementary heat source supply device 36 is connected to the fuel side-blown port 02, and the supplementary heat source supply device 36 preferably comprises a supply device of second waste activated carbon powder, pulverized coal and oxygen-enriched air to provide supplementary heat for smelting.
In yet another preferred embodiment of the present application, preferably as shown in fig. 2, the side-blown smelting furnace 31 includes a bottom wall 311, a first side wall 312, a top wall 313, and a second side wall 314, and the bottom wall 311 is divided into a smelting area and a clarification area that are in communication with each other; the first side wall 312 is connected to the bottom wall 311, and the fuel side lance 02 is arranged on the first side wall 312 of the smelting zone, preferably in the lower half of the first side wall 312; the top wall 313 is connected with the first side wall 312, the bottom wall 311, the first side wall 312 and the top wall 313 form a furnace chamber, and the feeding hole 01 is arranged on the top wall 313 of the smelting area; the second side wall 314 is connected with the top wall 313 and extends upwards, the second side wall 314 encloses a flue gas outlet 03 connected with the furnace chamber, and the clarification area and the feeding hole 01 are arranged at two sides of the flue gas outlet 03.
The fuel is introduced into a molten pool at the lower part of the furnace chamber through a fuel side-blowing port 02, so that copper-containing sludge particles and a circuit board undergo oxidation and reduction reactions in a smelting area to obtain smelting liquid and flue gas, the smelting liquid flows into a clarification area from the smelting area, the smelting liquid is separated into copper liquid and slag after being clarified in the clarification area, the copper liquid flows out from a copper outflow port at the bottom, the slag flows out from a slag outlet at the upper part, and the flue gas escapes from a side-blowing smelting furnace 31 through a flue gas outlet 03 at the upper part.
In order to improve the respective functional effects of the smelting area and the fining area, preferably, as shown in fig. 2, the top wall 313 of the smelting area is higher than the top wall 313 of the fining area, the side-blown smelting furnace 31 further includes a first side wall 315 and a second side wall 316, the first side wall 315 is disposed between the feed inlet 01 and the flue gas outlet 03, the first side wall 315 is connected to the top wall 313 and extends downward, and a space is provided between the first side wall 315 and the bottom wall 311; the second side wall 316 is disposed between the clarification area and the flue gas outlet 03, the second side wall 316 is connected to the top wall 313 and extends downward, and a space is provided between the second side wall 316 and the bottom wall 311.
In still another preferred embodiment of the present application, as shown in fig. 2, a reducing charging port 04 is further provided on the top wall 313 of the clarification area, and the side-blown smelting unit 30 further includes a reducing agent supply device 37, where the reducing agent supply device 37 is connected to the reducing charging port 04, and preferably the reducing agent supply device 37 is a third activated carbon supply device, a coke supply device or a lump coal supply device. And the third activated carbon supply device, the coke supply device or the lump coal supply device is used for supplying waste activated carbon, coke or lump coal to further reduce smelting liquid in the clarification area so as to further reduce copper in slag, reduce copper in slag and improve the yield of copper.
Since the flue gas generated by the side-blown smelting has relatively large amount of organic matters, in order to improve the utilization efficiency of the organic matters, it is preferable that the first side wall 312 and the second side wall 314 are provided with the secondary air inlet 05 as shown in fig. 2. The secondary air inlet 05 is preferably located in the upper half of the first side wall 312 on the first side wall 312. Air is supplied to the upper space of the furnace chamber and the flue gas outlet 03 through the secondary air inlet 05 to burn the flue gas in the flue gas outlet 03. Through the provided air, the combustible components such as organic matters, carbon monoxide and the like in the flue gas are fully combusted, the safety and environmental protection performance are improved, and the combustion of the combustible components can supplement heat to the furnace chamber, so that the energy consumption is further reduced.
In order to ensure the separation effect of the refining zone, it is preferred that the refining zone is further provided with heating means 317, as shown in fig. 2, preferably the heating means 317 is an electrode, which is arranged on the top wall 313.
After the above treatment, the generated flue gas may contain environmental pollution components, and preferably as shown in fig. 1, the above integrated treatment system further includes a flue gas treatment unit 40, where the flue gas treatment unit 40 includes a burner 41, and the burner 41 is connected to the flue gas outlet 03.
The flue gas generated by side-blown smelting is combusted by the burner 41 to obtain combustion tail gas, so that combustible components such as organic matters, carbon monoxide and the like in the tail gas are further treated.
As shown in fig. 1, the burner 41 preferably has a combustion exhaust outlet, the flue gas treatment unit 40 further includes a waste heat recovery device 42, a dioxin removal device 43 and a desulfurization device 44, the waste heat recovery device 42 has a combustion exhaust inlet and a cooling exhaust outlet, and the combustion exhaust inlet is connected with the combustion exhaust outlet; the dioxin removing device 43 is provided with a cooling tail gas inlet and an adsorption purified gas outlet, and the cooling tail gas inlet is connected with the cooling tail gas outlet; the desulfurization device 44 has an adsorption purge gas inlet and an evacuation port, and the adsorption purge gas inlet is connected to the adsorption purge gas outlet. The waste heat recovery device 42 is utilized to recycle the waste heat of the combustion tail gas, so that the temperature of the combustion tail gas is reduced, the heat utilization effect of the combustion tail gas is improved, and the recycled heat can be used for power generation; dioxin in the flue gas is removed by utilizing a dioxin removing device 43; sulfur in the flue gas is removed by the desulfurization device 44, so that the flue gas meets the emission requirement.
In still another preferred embodiment of the present application, as shown in fig. 1, the circuit board supply unit 20 includes a desoldering device 21 and a breaking device 22, and the desoldering device 21 performs a desoldering process on the circuit board; the crushing device 22 is connected with the tin-removing soldering device 21 to crush the tin-removed soldered circuit board, and the crushing device 22 is connected with the feed port 01 of the side-blown smelting unit 30. The circuit board is subjected to tin stripping treatment by utilizing the tin stripping device 21, so that the recovery rate of tin metal is improved, and the influence of the tin metal on copper metal recovery is avoided; the crushing device 22 is utilized to crush the circuit board, so that the heating area of the circuit board in side-blown smelting is increased, and the side-blown smelting efficiency is further improved.
In order to facilitate implementation of the integrated treatment system of the present application by those skilled in the art, the present application further provides an integrated treatment method for copper-containing sludge and circuit board, as shown in fig. 3, the integrated treatment method includes: mixing and granulating the copper-containing sludge and the waste activated carbon to obtain copper-containing sludge particles; and carrying out side-blown smelting on the copper-containing sludge particles and the circuit board.
According to the method, the waste activated carbon is used as a reducing agent and a part of combustion agent, and is mixed with copper-containing sludge for granulation and then is subjected to side-blown smelting with the circuit board, so that the energy consumption cost of the side-blown smelting is reduced; in addition, the circuit board generates heat by burning organic matters in the process of side-blowing smelting, and the organic matters can be further used as fuel for side-blowing smelting, so that not only is separation of copper-containing sludge and copper metal in the circuit board and other impurities completed, but also the heat energy of the organic matters in the circuit board is fully utilized, and the energy consumption cost of side-blowing smelting is further reduced.
The above-mentioned mixed granulating process may further include conventional pretreatment processes such as drying and homogenizing the copper-containing sludge, that is, drying and homogenizing the copper-containing sludge, and then mixing and granulating with non-activated carbon.
In a preferred embodiment of the present application, to increase the recovery of copper from the copper-containing sludge, it is preferred that the waste activated carbon in the copper-containing sludge particles is 10% to 80% by weight of the total copper in the copper-containing sludge and the waste circuit board.
In order to further reduce the cost of copper-containing sludge and metal recovery in the circuit board, the side-blown smelting process preferably uses waste mineral oil and oxygen-enriched air as fuel, and more preferably the temperature of the side-blown smelting is 1150-1400 ℃. The waste mineral oil is used for replacing natural gas commonly used in the prior art, so that the energy consumption cost is reduced, and the consumption of the non-mineral oil can be determined according to the side-blown smelting temperature, so that the side-blown smelting temperature is maintained at 1150-1400 ℃ to ensure the recovery rate of metals.
In order to improve the separation efficiency, it is preferable to add a slag former in the side-blown smelting process, as shown in fig. 3, and in order to save the cost, it is further preferable that the slag former is iron-containing slag, such as pyrite cinder, smelting slag, electric furnace smelting slag, and the like.
In order to improve the smelting efficiency, it is preferable to add a flux in the side-blown smelting process, as shown in fig. 3, and it is further preferable that the flux includes quartz and/or limestone, and the addition weight of the flux is 10 to 70% of the weight of the charge material in the side-blown smelting. The furnace feeding materials comprise copper-containing sludge, waste circuit boards, waste activated carbon and flux which enter a side blowing furnace.
In a preferred embodiment of the present application, in order to ensure the stability of the side-blown smelting temperature, it is preferred to use waste activated carbon powder, coal dust and oxygen-enriched air as supplementary fuel in the side-blown smelting process to provide supplementary heat for smelting.
In still another preferred embodiment of the present application, the above-mentioned side-blown smelting process is performed in a side-blown smelting furnace 31, as shown in fig. 2, the side-blown smelting furnace 31 includes a bottom wall 311, a first side wall 312, a top wall 313 and a second side wall 314, the bottom wall 311 is divided into a smelting area and a clarifying area that are mutually communicated, copper-containing sludge particles and a circuit board undergo oxidation and reduction reactions in the smelting area to obtain a smelting liquid, the smelting liquid flows from the smelting area into the clarifying area, and the smelting liquid is separated into copper liquid and slag after being clarified in the clarifying area; the first side wall 312 is connected with the bottom wall 311, and a fuel side blow hole 02 is arranged on the first side wall 312 of the smelting zone, and the fuel side blow hole 02 is preferably arranged on the lower half part of the first side wall 312; the top wall 313 is connected with the first side wall 312, the bottom wall 311, the first side wall 312 and the top wall 313 form a furnace chamber, a feed inlet 01 is arranged on the top wall 313 of the smelting area, and copper-containing sludge particles and a circuit board enter the furnace chamber from the feed inlet 01; the second side wall 314 is connected with the top wall 313 and extends upwards, the second side wall 314 encloses a flue gas outlet 03 connected with the furnace chamber, and the clarification area and the feeding hole 01 are arranged at two sides of the flue gas outlet 03.
The fuel is introduced into a molten pool at the lower part of the furnace chamber through a fuel side-blowing port 02, so that copper-containing sludge particles and a circuit board undergo oxidation and reduction reactions in a smelting area to obtain smelting liquid and flue gas, the smelting liquid flows into a clarification area from the smelting area, the smelting liquid is separated into copper liquid and slag after being clarified in the clarification area, the copper flow flows out from a copper outflow port at the bottom, the slag flows out from a slag outlet at the upper part, and the flue gas escapes from a side-blowing smelting furnace 31 through a flue gas outlet 03 at the upper part.
In order to improve the respective functional effects of the smelting area and the fining area, preferably, as shown in fig. 2, the top wall 313 of the smelting area is higher than the top wall 313 of the fining area, the side-blown smelting furnace 31 further includes a first side wall 315 and a second side wall 316, the first side wall 315 is disposed between the feed inlet 01 and the flue gas outlet 03, the first side wall 315 is connected to the top wall 313 and extends downward, and a space is provided between the first side wall 315 and the bottom wall 311; the second side wall 316 is disposed between the clarification area and the flue gas outlet 03, the second side wall 316 is connected to the top wall 313 and extends downward, and a space is provided between the second side wall 316 and the bottom wall 311.
In still another preferred embodiment of the present application, as shown in fig. 2, a reduction feed port 04 is further provided on the top wall 313 of the clarification zone, and the integrated treatment method further comprises adding waste activated carbon, coke or lump coal into the clarification zone through the reduction feed port 04. And further reducing the smelting liquid in the clarification area by using waste activated carbon, coke or lump coal to further reduce copper in slag, reduce copper in slag and improve the yield of copper.
Because the flue gas generated by side-blown smelting has relatively more organic matters, in order to improve the utilization efficiency of the organic matters, it is preferable that, as shown in fig. 2, a secondary air inlet 05 is provided on the second side wall 314, and the integrated treatment method further includes providing air to the flue gas outlet 03 through the secondary air inlet 05 to burn the flue gas in the flue gas outlet 03. Through the provided air, the combustible components such as organic matters, carbon monoxide and the like in the flue gas are fully combusted, the safety and environmental protection performance are improved, and the combustion of the combustible components can supplement heat to the furnace chamber, so that the energy consumption is further reduced.
In order to ensure the separation effect of the clarification zone, the above comprehensive treatment method preferably further comprises a process of heating the smelting liquid in the clarification zone.
After the treatment, the generated flue gas may contain environmental pollution components, and preferably as shown in fig. 3, the comprehensive treatment method further comprises a process of burning the flue gas generated by side-blown smelting to obtain combustion tail gas. To further treat the combustible components such as organic matters, carbon monoxide and the like.
As shown in fig. 3, the above-mentioned comprehensive treatment method preferably further includes the steps of sequentially performing waste heat recovery, dioxin removal treatment and desulfurization treatment on the combustion exhaust gas with respect to the components in the flue gas generated in the present application. Waste heat recovery is carried out on the combustion tail gas, so that on one hand, the temperature of the combustion tail gas is reduced, on the other hand, the heat utilization effect of the combustion tail gas is improved, and the recovered heat can be used for power generation; dioxin in the flue gas is removed through dioxin removal treatment; the desulfurization treatment removes sulfur in the flue gas, so that the flue gas meets the emission requirement. The specific implementation method of the dioxin removal treatment and the desulfurization treatment can refer to the prior art, for example, a mode of quenching and adsorbing dioxin by activated carbon is adopted to remove the dioxin, and the description is omitted here.
In still another preferred embodiment of the present application, as shown in fig. 3, the above-mentioned integrated treatment method further includes a process of sequentially performing a desolventizing treatment and a crushing treatment on the circuit board before the side-blown smelting of the circuit board, to obtain the circuit board having a particle size of 20-70 mm. The circuit board is subjected to tin stripping treatment, so that the recovery rate of tin metal is improved, and the influence of the tin metal on copper metal recovery is avoided; the circuit board is crushed, so that the heating area of the circuit board in side-blown smelting is increased, and the side-blown smelting efficiency is further improved.
The advantageous effects of the above technical scheme will be further described below in conjunction with examples and comparative examples.
Example 1
And drying the copper-containing sludge until the water content is 40%, pre-homogenizing, and mixing and granulating the dried copper-containing sludge and waste activated carbon to obtain copper-containing sludge particles. Firstly, detinning the waste circuit board to obtain a detinned waste circuit board, and then feeding the waste circuit board into a shearing crusher for crushing to obtain the circuit board with the grain size of about 50 mm. And adding the crushed circuit board, copper-containing sludge particles, pyrite cinder and quartz stone into a side-blowing furnace after proportioning. Wherein, the weight of the waste activated carbon is controlled to be 30 percent of the total weight of copper in the copper-containing sludge and the circuit board; the proportioning amount of pyrite cinder is 15% of the amount of the material fed into the furnace; the quartz stone batching amount is 15% of the feeding amount. Oxygen-enriched air (oxygen concentration 50-60%) and waste mineral oil are sprayed into a molten pool of a side-blown furnace through a plurality of spray guns immersed in the molten pool.
The material charged into the furnace falls onto the surface of the molten pool, oxidation-reduction reaction occurs, and organic matters in the waste circuit board are burnt vigorously. The waste mineral oil is burnt with oxygen-enriched air to provide heat for smelting, and the side-blown smelting temperature is controlled to be 1300-1350 ℃. The metallic oxides of copper, nickel and the like in the materials undergo a reduction reaction to generate metal, pyrite cinder and quartz stone are subjected to slagging to form a slag phase, and the waste activated carbon is used as a reducing agent.
The molten metal and slag are separated into molten copper and slag after being clarified in a fining zone of the side-blown furnace. Copper liquid flows out from a copper outflow opening at the bottom, and slag flows out from a slag outlet at the upper part.
The side wall of the side blowing furnace is provided with a secondary air inlet, the flue gas in the side blowing furnace contains CO and organic matters which are not completely combusted, and the flue gas is combusted with the secondary air in the upper space of the side blowing furnace.
After the side-blown furnace flue gas is combusted by the combustion chamber, waste heat recovery, dioxin removal treatment and desulfurization treatment are sequentially carried out on the combustion tail gas, and the flue gas is discharged after reaching standards.
Example 2
And drying the copper-containing sludge until the water content is 40%, pre-homogenizing, and mixing and granulating the dried copper-containing sludge and waste activated carbon to obtain copper-containing sludge particles. Firstly, detinning the waste circuit board to obtain a detinned waste circuit board, and then feeding the waste circuit board into a shearing crusher for crushing to obtain the circuit board with the grain size of about 40-70 mm. And adding the crushed circuit board, copper-containing sludge particles, pyrite cinder and quartz stone into a side-blowing furnace after proportioning. Wherein, the weight of the waste activated carbon is controlled to be 80 percent of the total weight of copper in the copper-containing sludge and the circuit board; the proportioning amount of pyrite cinder is 15% of the amount of the material fed into the furnace; the quartz stone batching amount is 15% of the feeding amount. Oxygen-enriched air (oxygen concentration 50-60%) and waste mineral oil are sprayed into a molten pool of a side-blown furnace through a plurality of spray guns immersed in the molten pool.
The material charged into the furnace falls onto the surface of the molten pool, oxidation-reduction reaction occurs, and organic matters in the waste circuit board are burnt vigorously. The waste mineral oil is burnt with oxygen-enriched air to provide heat for smelting, and the side-blown smelting temperature is controlled to be 1150-1200 ℃. The metallic oxides of copper, nickel and the like in the materials undergo a reduction reaction to generate metal, pyrite cinder and quartz stone are subjected to slagging to form a slag phase, and the waste activated carbon is used as a reducing agent.
The molten metal and slag are separated into molten copper and slag after being clarified in a fining zone of the side-blown furnace. Copper liquid flows out from a copper outflow opening at the bottom, and slag flows out from a slag outlet at the upper part.
The side wall of the side blowing furnace is provided with a secondary air inlet, the flue gas in the side blowing furnace contains CO and organic matters which are not completely combusted, and the flue gas is combusted with the secondary air in the upper space of the side blowing furnace.
After the side-blown furnace flue gas is combusted by the combustion chamber, waste heat recovery, dioxin removal treatment and desulfurization treatment are sequentially carried out on the combustion tail gas, and the flue gas is discharged after reaching standards.
Example 3
And drying the copper-containing sludge until the water content is 40%, pre-homogenizing, and mixing and granulating the dried copper-containing sludge and waste activated carbon to obtain copper-containing sludge particles. Firstly, detinning the waste circuit board to obtain a detinned waste circuit board, and then feeding the waste circuit board into a shearing crusher for crushing to obtain the circuit board with the grain size of about 20-50 mm. And adding the crushed circuit board, copper-containing sludge particles, pyrite cinder and quartz stone into a side-blowing furnace after proportioning. Wherein, the weight of the waste activated carbon is controlled to be 10 percent of the total weight of copper in the copper-containing sludge and the circuit board; the proportioning amount of pyrite cinder is 15% of the amount of the material fed into the furnace; the quartz stone batching amount is 15% of the feeding amount. Oxygen-enriched air (oxygen concentration 50-60%) and waste mineral oil are sprayed into a molten pool of a side-blown furnace through a plurality of spray guns immersed in the molten pool.
The material charged into the furnace falls onto the surface of the molten pool, oxidation-reduction reaction occurs, and organic matters in the waste circuit board are burnt vigorously. The waste mineral oil is burnt with oxygen-enriched air to provide heat for smelting, and the side-blown smelting temperature is controlled to be 1350-1400 ℃. The metallic oxides of copper, nickel and the like in the materials undergo a reduction reaction to generate metal, pyrite cinder and quartz stone are subjected to slagging to form a slag phase, and the waste activated carbon is used as a reducing agent.
The molten metal and slag are separated into molten copper and slag after being clarified in a fining zone of the side-blown furnace. Copper liquid flows out from a copper outflow opening at the bottom, and slag flows out from a slag outlet at the upper part.
The side wall of the side blowing furnace is provided with a secondary air inlet, the flue gas in the side blowing furnace contains CO and organic matters which are not completely combusted, and the flue gas is combusted with the secondary air in the upper space of the side blowing furnace.
After the side-blown furnace flue gas is combusted by the combustion chamber, waste heat recovery, dioxin removal treatment and desulfurization treatment are sequentially carried out on the combustion tail gas, and the flue gas is discharged after reaching standards.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
the copper-containing sludge supply device and the first waste activated carbon supply device are utilized to respectively provide copper-containing sludge and waste activated carbon, then the copper-containing sludge and the waste activated carbon are mixed and granulated, the waste activated carbon is used as a reducing agent and a part of combustion agent, and after granulation, the waste activated carbon and the circuit board are subjected to side-blown smelting in the side-blown smelting unit, so that the energy consumption cost of the side-blown smelting is reduced; in addition, the circuit board generates heat by burning organic matters in the process of side-blowing smelting, and the organic matters can be further used as fuel for side-blowing smelting, so that not only is separation of copper-containing sludge and copper metal in the circuit board and other impurities completed, but also the heat energy of the organic matters in the circuit board is fully utilized, and the energy consumption cost of side-blowing smelting is further reduced.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. An integrated treatment system for copper-containing sludge and circuit boards, the integrated treatment system comprising:
a copper-containing sludge granulation unit (10), wherein the copper-containing sludge granulation unit (10) comprises a copper-containing sludge supply device and a first waste activated carbon supply device which are connected with the granulation device;
a wiring board supply unit (20); and
a side-blown smelting unit (30), wherein the side-blown smelting unit (30) comprises a side-blown smelting furnace (31), the side-blown smelting furnace (31) is provided with a feed inlet (01) and a fuel side-blown inlet (02), and the granulating device and the circuit board supply unit (20) are connected with the feed inlet (01); the side-blown smelting unit (30) comprises a waste mineral oil supply device (32) and an oxygen-enriched air supply device (33), wherein the waste mineral oil supply device (32) and the oxygen-enriched air supply device (33) are connected with the fuel side-blowing port (02);
wherein the side-blown smelting furnace (31) comprises:
a bottom wall (311), the bottom wall (311) being divided into a smelting zone and a fining zone, which are in communication with each other;
-a first side wall (312), said first side wall (312) being connected to said bottom wall (311), said fuel side lance (02) being arranged on said first side wall (312) of said smelting zone and being arranged in a lower half of said first side wall (312);
a top wall (313); the top wall (313) is connected with the first side wall (312), the bottom wall (311), the first side wall (312) and the top wall (313) form a furnace chamber, and the feeding hole (01) is arranged on the top wall (313) of the smelting area; and
the second side wall (314), the second side wall (314) is connected with the top wall (313) and extends upwards, the second side wall (314) encloses a flue gas outlet (03) connected with the furnace chamber, and the clarification area and the feed inlet (01) are arranged on two sides of the flue gas outlet (03);
the top wall (313) of the smelting zone being greater in height than the top wall (313) of the fining zone, the side-blown smelting furnace (31) further comprising:
the first side wall (315) is arranged between the feeding hole (01) and the flue gas outlet (03), the first side wall (315) is connected with the top wall (313) and extends downwards, and a space is reserved between the first side wall (315) and the bottom wall (311); and
a second sidewall (316); the second side wall (316) is arranged between the clarification area and the flue gas outlet (03), the second side wall (316) is connected with the top wall (313) and extends downwards, and a space is reserved between the second side wall (316) and the bottom wall (311);
the top wall (313) of the clarification area is further provided with a reducing feed port (04), the side-blown smelting unit (30) further comprises a reducing agent supply device (37), the reducing agent supply device (37) is connected with the reducing feed port (04), and the reducing agent supply device (37) is a third activated carbon supply device, a coke supply device or a lump coal supply device.
2. The integrated treatment system according to claim 1, wherein the side-blown smelting unit (30) further comprises a slag former supply (34), the slag former supply (34) being connected to the feed inlet (01).
3. The integrated treatment system of claim 2, wherein the slag former supply (34) is an iron-containing slag supply.
4. The integrated treatment system according to claim 1, characterized in that the side-blown smelting unit (30) further comprises a flux supply means (35), the flux supply means (35) being connected to the feed inlet (01).
5. The integrated treatment system according to claim 1, characterized in that the side-blown smelting unit (30) further comprises a supplementary heat source supply device (36), the supplementary heat source supply device (36) being connected to the fuel side-blow opening (02).
6. The integrated treatment system of claim 5, wherein the supplemental heat source supply (36) comprises a supply of secondary waste activated carbon powder, pulverized coal, and oxygen-enriched air.
7. The integrated processing system of claim 1, wherein secondary air inlets (05) are provided on the first side wall (312) and the second side wall (314).
8. Integrated treatment system according to claim 1, characterized in that the clarification zone is further provided with heating means (317).
9. The integrated processing system of claim 8, wherein the heating device (317) is an electrode, the electrode being disposed on the top wall (313).
10. The integrated treatment system according to claim 1, further comprising a flue gas treatment unit (40), the flue gas treatment unit (40) comprising a burner (41), the burner (41) being connected to the flue gas outlet (03).
11. The integrated treatment system according to claim 10, wherein the burner (41) has a combustion tail gas outlet, the flue gas treatment unit (40) further comprising:
the waste heat recovery device (42) is provided with a combustion tail gas inlet and a cooling tail gas outlet, and the combustion tail gas inlet is connected with the combustion tail gas outlet;
the device comprises a dioxin removing device (43), wherein the dioxin removing device (43) is provided with a cooling tail gas inlet and an adsorption purified gas outlet, and the cooling tail gas inlet is connected with the cooling tail gas outlet;
and the desulfurization device (44) is provided with an adsorption purification gas inlet and an evacuation port, and the adsorption purification gas inlet is connected with the adsorption purification gas outlet.
12. The integrated processing system according to claim 1, wherein the wiring board supply unit (20) includes:
a solder stripping device (21), wherein the solder stripping device (21) performs solder stripping treatment on the circuit board; and
the crushing device (22), the crushing device (22) is connected with the tin-removing welding device (21) so as to carry out crushing treatment on the circuit board after tin-removing welding, and the crushing device (22) is connected with the feed inlet (01) of the side-blowing smelting unit (30).
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| CN201810433295.XA CN108531737B (en) | 2018-05-08 | 2018-05-08 | Comprehensive treatment system for copper-containing sludge and circuit board |
| PCT/CN2019/085143 WO2019214507A1 (en) | 2018-05-08 | 2019-04-30 | Comprehensive processing method and comprehensive processing system for copper-containing sludge and circuit boards |
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| CN201810433295.XA CN108531737B (en) | 2018-05-08 | 2018-05-08 | Comprehensive treatment system for copper-containing sludge and circuit board |
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| CN112695209B (en) * | 2020-12-30 | 2023-04-14 | 黑龙江紫金铜业有限公司 | Copper-reinforced oxygen-enriched side-blown molten pool smelting furnace and smelting method |
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| US8172566B2 (en) * | 2010-02-18 | 2012-05-08 | Air Products And Chemicals, Inc. | Liquid fuel combustion process and apparatus |
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