CN106011484A - Waste circuit board precious metal recovery device based on cyanogen generation bio-membrane reactor - Google Patents
Waste circuit board precious metal recovery device based on cyanogen generation bio-membrane reactor Download PDFInfo
- Publication number
- CN106011484A CN106011484A CN201610539891.7A CN201610539891A CN106011484A CN 106011484 A CN106011484 A CN 106011484A CN 201610539891 A CN201610539891 A CN 201610539891A CN 106011484 A CN106011484 A CN 106011484A
- Authority
- CN
- China
- Prior art keywords
- biofilm reactor
- culture medium
- circuit board
- reactor
- precious metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- 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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
- C22B11/042—Recovery of noble metals from waste materials
- C22B11/046—Recovery of noble metals from waste materials from manufactured products, e.g. from printed circuit boards, from photographic films, paper or baths
-
- 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
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
-
- 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 relates to a waste circuit board precious metal recovery device based on a cyanogen generation bio-membrane reactor. The waste circuit board precious metal recovery device comprises a culture medium storage tank, the gas lifting circulation type bio-membrane reactor, a gas supply system, a sample feeding device, an electric control box, a metal ion online monitoring system and a control system. Bio-membrane carriers are contained in the gas lifting circulation type bio-membrane reactor. The culture medium storage tank communicates with a culture medium adding opening in the gas lifting circulation type bio-membrane reactor through a culture medium pump. The gas supply system is connected with the gas lifting circulation type bio-membrane reactor through a gas pump. The sample feeding device communicates with the gas lifting circulation type bio-membrane reactor. A solution pump used for pumping out a metal ion solution is arranged on the gas lifting circulation type bio-membrane reactor. The electric control box is electrically connected with the sample feeding device, the metal ion online monitoring system, the control system, the solution pump, the gas pump and the culture medium pump. The device can achieve efficient and stable leaching of precious metal and is free of pollution during use and environment-friendly.
Description
Technical field
The present invention relates to separation and the recovery of waste and old circuit board noble metal, be specifically related to a kind of based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor.
Background technology
Along with science and technology constantly improves, the appearance of electric equipment products makes the living standard of people day by day improve.Circuit board constantly becomes big as the core component of various electric equipment products, its learies along with the increase of waste and old electric electrical equipment amount.Waste printed circuit board is contained within the metals resources enriched, the base metal such as non-ferrous metal and ferrum such as including the noble metal such as gold, silver, palladium, copper, aluminum, zinc, stannum, lead.Additionally, waste printed circuit board is gone back the substantial amounts of nonmetal resource of content.Therefore, the resource of waste printed circuit board has become as the hot issue in resource regeneration field.At present, the patented technology application about discarded circuit board resource is concentrated mainly on metal and two aspects of nonmetal resource reclaim.Metals resources reclaims the method used and mostly is Physical, such as Patent No.
200510023785.5
, the broken and patent of invention of high-pressure electrostatic separation method of entitled waste and old printed circuit board and Patent No.
200510023788.9
, the high-pressure electrostatic separation method of entitled waste PCB grains and the patent of invention of device, Chemical Leaching method such as Application No.
200910082443.9
, the patent of invention of the method for stannum, copper and lead in entitled a kind of Selectively leaching discarded circuit board.In physical recovering method waste printed circuit board during the metals resources such as copper, zinc, lead, generally use broken
-
The method that physical separation combines.The method can successfully reclaim from smashing waste circuit board
95%
Above metalliferous material.But; Physical shows the deficiency in ability when separating metallic particles mixture; such as embody separation rate according to the method difference used the highest; or cost of equipment is too high; the situation that production cost is too high, is especially embodied in recovery noble metal aspect, and bullion content is less; and the general more difficult separation of physical separation method, or high cost.When Chemical Leaching method reclaims the metals resources in waste printed circuit board, the response rate is high, and can reclaim major part metal.But, Chemical Leaching method can bring serious secondary pollution, such as waste water, spent acid mist etc., brings heavy environmental protection pressure to whole production technology.The huge cytotoxic chemical articles for use such as meanwhile, the use of a large amount of chemicals brings potential safety hazard to production process, and the recovery of noble metal may also need to use chloroazotic acid, hydrocyanic acid.
Bioleaching is a kind of a kind of method utilizing the metabolite given off in growth of microorganism, metabolic process to dissolve, leach target substance, the advantage with environmental protection, low cost.The noble metal in Microorganism Leaching waste printed circuit board is utilized to be theoretically feasible, unique unfortunately bioleaching process is the most inefficient, especially when processing waste printed circuit board, its nonmetallic ingredient and other metal component can destroy the leaching process of noble metal, reduce the leaching rate of noble metal.
Reclaiming the Patents of noble metal in waste printed circuit board by efficient Bioleaching technology and device at present little, the information that utilization product cyanogen biofilm reactor efficiently leaches waste printed circuit board noble metal is nearly no.
Summary of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art, it is provided that a kind of based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is achieved the leaching that noble metal is efficient, stable.
For solving above technical problem, a kind of technical scheme that the present invention takes is:
A kind of based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, including culture medium storage tank, airlift loop biofilm reactor, air supply system, sampling device, electric cabinet, metal ion online monitoring system and control system, airlift loop biofilm reactor is contained within biofilm carrier, culture medium storage tank adds entrance by culture medium pump with the culture medium on airlift loop biofilm reactor and is connected, air supply system is connected with airlift loop biofilm reactor by gas pump, sampling device is connected with airlift loop biofilm reactor, airlift loop biofilm reactor is provided with the solution pump for pumping out metal ion solution, electric cabinet respectively with sampling device, metal ion online monitoring system, control system, solution pump, gas pump and culture medium pump are electrically connected.
Preferably, airlift loop biofilm reactor is provided with the constant temperature system of regulation temperature of reactor.
It is further preferred that constant temperature system includes the external flow guiding cylinder being connected with airlift loop biofilm reactor, external flow guiding cylinder is connected to form closed circuit with thermostatic water tank and hot water circulating pump respectively.
It is further preferred that external flow guiding cylinder arranges reactor membrane carrier with the airlift loop biofilm reactor place of being connected intercepts net.
Preferably, the top of airlift loop biofilm reactor is provided with reactor membrane carrier and intercepts net.
Preferably, airlift loop biofilm reactor being provided with aeration head, air supply system is connected with aeration head.
Preferably, the culture medium that culture medium storage tank provides is beef extract-peptone
-
Sodium chloride culture medium.
Due to the employing of above technical scheme, the present invention compared with prior art has the advantage that
The microecosystem that the present invention utilizes microbial biofilm relatively independent is susceptible to the feature of envirment factor disturbance, build and have stable product cyanogen ability concurrently and noble metal efficiently leaches the biofilm reactor of ability, form waste printed circuit board noble metal extract technology more stable, efficient, low consumed.
Accompanying drawing explanation
Figure
1
Structural representation for the present invention；
Wherein:
1
, culture medium storage tank；
2
, airlift loop biofilm reactor；
3
, biofilm carrier；
4
, air supply system；
5
, aeration head；
6
, sampling device；
7
, external flow guiding cylinder；
8
, thermostatic water tank；
9
, electric cabinet；
10
, metal ion online monitoring system；
11
, control system；
12
, solution pump；
13
, culture medium add entrance；
14
, gas pump；
15
, hot water circulating pump；
16
, culture medium pump；
17
, reactor membrane carrier intercept net.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Such as accompanying drawing
1
Shown in, a kind of waste printed circuit board precious metal recovery device based on product cyanogen biofilm reactor of the present invention, including culture medium storage tank
1
, airlift loop biofilm reactor
2
, air supply system
4
, sampling device
6
, electric cabinet
9
, metal ion online monitoring system
10
And control system
11
, airlift loop biofilm reactor
2
It is contained within biofilm carrier
3
, culture medium storage tank
1
By culture medium pump
16
With airlift loop biofilm reactor
2
On culture medium add entrance
13
It is connected, air supply system
4
By gas pump
14
With airlift loop biofilm reactor
2
It is connected, sampling device
6
With airlift loop biofilm reactor
2
It is connected, airlift loop biofilm reactor
2
It is provided with the solution pump for pumping out metal ion solution
12
, electric cabinet
9
Respectively with sampling device
6
, metal ion online monitoring system, control system
11
, solution pump
12
, gas pump
14
And culture medium pump
16
It is electrically connected.
In the present embodiment, airlift loop biofilm reactor
2
Being provided with the constant temperature system of regulation temperature of reactor, constant temperature system includes and airlift loop biofilm reactor
2
The external flow guiding cylinder being connected
7
, external flow guiding cylinder
7
Respectively with thermostatic water tank
8
And hot water circulating pump
15
It is connected to form closed circuit, hot water circulating pump
15
With electric cabinet
9
It is connected.
In the present embodiment, external flow guiding cylinder
7
With airlift loop biofilm reactor
2
Be connected place arrange reactor membrane carrier intercept net
17
, airlift loop biofilm reactor
2
Top also be provided with reactor membrane carrier intercept net
17
。
In the present embodiment, in order to preferably make gas soluble in water, airlift loop biofilm reactor
2
On be provided with aeration head
5
, air supply system
4
With aeration head
5
It is connected.
In the present embodiment, culture medium storage tank
1
The culture medium provided is beef extract-peptone
-
Sodium chloride culture medium.
A kind of present invention of utilization method for recovering precious metals based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor comprises the steps:
1
, in airlift loop biofilm reactor cultivating microorganism (pseudomonas), make pseudomonas formed on floated membrane carrier surface lasting low concentration produce cyanogen biomembrane；
2
, biofilm reactor will be added through broken waste printed circuit board granule in, occur metal to leach reaction under the oozy low-concentration hydrogen cyanic acid effect of pseudomonas biological film, hydrocyanic acid preferentially leaches noble metal, obtains metal ion solution；
3
, by metal ion on-line monitoring system monitoring reactor in precious metal ion concentration; use control system; metal ion and the discarded circuit board nonmetallic ingredient particle suspension of leaching are pumped out and filter nonmetallic ingredient; supplement smashing waste wiring board granule and culture medium by control system to reactor, it is ensured that biomembrane produces cyanogen and noble metal leaches continuous service simultaneously；
4
, the metal ion solution collected is displaced noble metal and common metal by the way of metal replacement.
The operating process of the present invention is: first by culture medium storage tank
1
In culture medium (beef extract-peptone
-
Sodium chloride culture medium) it is passed through equipped with suspending type biological membrane carrier
3
Airlift loop biofilm reactor
2
In, and the most cultured pseudomonas is inoculated into reactor
2
In, by gas pump
14
And hot water circulating pump
15
Regulation ventilation and temperature of reactor, promote pseudomonas fast-growth and at biofilm carrier
3
Surface forms stable product cyanogen biomembrane (about
30
Hour)；Then sampling device is passed through
6
Smashing waste circuit board crushed particles is added reactor
2
In；Regulation reactor
2
In nutrient concentration,
pH
Value, temperature and dissolved oxygen concentration, promote that pseudomonas biological film continuous release goes out the hydrocyanic acid of low concentration, by noble metal removal in discarded circuit board granule, makes them become ionic state and enters in solution；By the online inspection control system of metal ion
10
In on-line monitoring reactor solution, the concentration of the noble metal such as gold silver, passes through control system when reaching finite concentration level
11
Start solution pump
12
, after the solution in reactor is pumped out and filtered, use metal replacement method to reclaim the metal ion in filtrate；Then pass through control system
11
Open culture medium pump
16
To reactor
2
It is passed through culture medium, and passes through sampling device
6
Smashing waste circuit board granule is added reactor
2
, by gas pump
14
Regulation ventilation and intensity, promote reactor
2
In pseudomonas biological film persistently produce cyanogen and leach noble metal.The method and device can preferentially obtain in smashing waste circuit board the precious metal ion solution such as gold silver, and separation and Extraction noble metal.
Apparatus of the present invention are capable of the leaching that noble metal is efficient, stable, use pollution-free, environmentally friendly.
Above the present invention is described in detail; the explanation of embodiment is only intended to help to understand method and the core concept thereof of the present invention; its object is to allow the personage being familiar with this art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention。
Claims (7)
- null1. a waste printed circuit board precious metal recovery device based on product cyanogen biofilm reactor，It is characterized in that: include culture medium storage tank (1)、Airlift loop biofilm reactor (2)、Air supply system (4)、Sampling device (6)、Electric cabinet (9)、Metal ion online monitoring system (10) and control system (11)，Described airlift loop biofilm reactor (2) is contained within biofilm carrier (3)，Described culture medium storage tank (1) adds entrance (13) by culture medium pump (16) with the culture medium on described airlift loop biofilm reactor (2) and is connected，Described air supply system (4) is connected with described airlift loop biofilm reactor (2) by gas pump (14)，Described sampling device (6) is connected with described airlift loop biofilm reactor (2)，Described airlift loop biofilm reactor (2) is provided with the solution pump (12) for pumping out metal ion solution，Described electric cabinet (9) respectively with described sampling device (6)、Metal ion online monitoring system、Control system (11)、Solution pump (12)、Gas pump (14) and culture medium pump (16) are electrically connected.
- It is the most according to claim 1 based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is characterised in that: described airlift loop biofilm reactor (2) is provided with the constant temperature system of regulation temperature of reactor.
- The most according to claim 2 based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is characterized in that: described constant temperature system includes the external flow guiding cylinder (7) being connected with described airlift loop biofilm reactor (2), described external flow guiding cylinder (7) is connected to form closed circuit with described thermostatic water tank (8) and hot water circulating pump (15) respectively.
- It is the most according to claim 3 based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is characterised in that: described external flow guiding cylinder (7) arranges reactor membrane carrier and intercepts net (17) with described airlift loop biofilm reactor (2) place of being connected.
- It is the most according to claim 1 based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is characterised in that: the top of described airlift loop biofilm reactor (2) is provided with reactor membrane carrier and intercepts net (17).
- The most according to claim 1 based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is characterized in that: be provided with aeration head (5) on described airlift loop biofilm reactor (2), described air supply system (4) is connected with described aeration head (5).
- It is the most according to claim 1 based on the waste printed circuit board precious metal recovery device producing cyanogen biofilm reactor, it is characterised in that: the culture medium that described culture medium storage tank (1) provides is beef extract-peptone-sodium chloride culture medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539891.7A CN106011484B (en) | 2016-07-08 | 2016-07-08 | A kind of waste printed circuit board precious metal recovery device based on production cyanogen biofilm reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539891.7A CN106011484B (en) | 2016-07-08 | 2016-07-08 | A kind of waste printed circuit board precious metal recovery device based on production cyanogen biofilm reactor |
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| Publication Number | Publication Date |
|---|---|
| CN106011484A true CN106011484A (en) | 2016-10-12 |
| CN106011484B CN106011484B (en) | 2018-09-14 |
Family
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| CN201610539891.7A Active CN106011484B (en) | 2016-07-08 | 2016-07-08 | A kind of waste printed circuit board precious metal recovery device based on production cyanogen biofilm reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119194A (en) * | 2017-03-22 | 2017-09-01 | 中山大学 | The high-performance bio leaching method and device of a kind of waste and old circuit board noble metal |
| EP3415647A1 (en) * | 2017-06-13 | 2018-12-19 | B.R.A.I.N. Ag | A process for recovering precious metals from secondary resources |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001018267A1 (en) * | 1999-09-07 | 2001-03-15 | Billiton Intellectual Property B.V. | Recovery of precious metal from sulphide minerals by bioleaching |
| CN103320619A (en) * | 2013-06-27 | 2013-09-25 | 扬州大学 | Method and device for biological leaching of precious metals from metal mixed particles of crushed waste circuit boards |
| CN105603187A (en) * | 2016-01-13 | 2016-05-25 | 南华大学 | Moving bed bioreactor capable of oxidizing Fe2+ rapidly and method for oxidizing Fe2+ rapidly |
-
2016
- 2016-07-08 CN CN201610539891.7A patent/CN106011484B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001018267A1 (en) * | 1999-09-07 | 2001-03-15 | Billiton Intellectual Property B.V. | Recovery of precious metal from sulphide minerals by bioleaching |
| CN103320619A (en) * | 2013-06-27 | 2013-09-25 | 扬州大学 | Method and device for biological leaching of precious metals from metal mixed particles of crushed waste circuit boards |
| CN105603187A (en) * | 2016-01-13 | 2016-05-25 | 南华大学 | Moving bed bioreactor capable of oxidizing Fe2+ rapidly and method for oxidizing Fe2+ rapidly |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119194A (en) * | 2017-03-22 | 2017-09-01 | 中山大学 | The high-performance bio leaching method and device of a kind of waste and old circuit board noble metal |
| EP3415647A1 (en) * | 2017-06-13 | 2018-12-19 | B.R.A.I.N. Ag | A process for recovering precious metals from secondary resources |
| WO2018228924A1 (en) * | 2017-06-13 | 2018-12-20 | Brain Ag | A process for recovering precious metals from secondary resources |
| CN110637100A (en) * | 2017-06-13 | 2019-12-31 | 智脑股份公司 | Method for recovering precious metals from renewable resources |
| JP2020523485A (en) * | 2017-06-13 | 2020-08-06 | ブレイン・アクチェンゲゼルシャフトＢｒａｉｎ Ａｇ | How to recover precious metals from secondary resources |
| US11499205B2 (en) | 2017-06-13 | 2022-11-15 | Brain Ag | Process for recovering precious metals from secondary resources |
| JP7185646B2 (en) | 2017-06-13 | 2022-12-07 | ブレイン・アクチェンゲゼルシャフト | Methods of recovering precious metals from secondary resources |
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| Publication number | Publication date |
|---|---|
| CN106011484B (en) | 2018-09-14 |
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