CN113106495A - Method for recovering metallic lead and sulfuric acid from waste lead sulfate - Google Patents
Method for recovering metallic lead and sulfuric acid from waste lead sulfate Download PDFInfo
- Publication number
- CN113106495A CN113106495A CN202011251683.XA CN202011251683A CN113106495A CN 113106495 A CN113106495 A CN 113106495A CN 202011251683 A CN202011251683 A CN 202011251683A CN 113106495 A CN113106495 A CN 113106495A
- Authority
- CN
- China
- Prior art keywords
- sulfuric acid
- lead
- lead sulfate
- waste
- pole
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/18—Electrolytic production, recovery or refining of metals by electrolysis of solutions of lead
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
A method for recovering metallic lead and sulfuric acid from waste lead sulfate relates to a resource utilization technology of lead-containing waste in the field of resource recycling. Firstly, the waste lead sulfate and the conductive additive material are crushed to the granularity of less than or equal to 5mm and are uniformly mixed, acid-resistant conductive material is used as a positive electrode and a negative electrode, the mixture of the waste lead sulfate and the conductive additive material is attached to a cathode, water or dilute sulfuric acid is used as electrolyte for electrolytic reduction, the waste lead sulfate is decomposed into metal lead and sulfuric acid after reduction, the metal lead is recovered from the cathode, and the sulfuric acid is recovered from electrolyte solution. The invention has the advantages that: the method can recover metallic lead and dilute sulfuric acid from waste lead sulfate, has short process flow, low energy consumption and no salt by-product in the treatment process, and the recovered lead and acid are easy to be reused in the production process of lead-acid storage batteries, thereby being an alternative technology for a pyrogenic process and a wet treatment process requiring desulfurization.
Description
Technical Field
The invention relates to a resource utilization technology of lead-containing waste in the field of resource recycling, in particular to a method for recovering metallic lead and sulfuric acid from waste lead sulfide.
Background
The waste lead sulfate is mainly derived from waste lead-acid storage batteries and waste lead sulfate chemical products, the content of lead sulfate in the waste lead-acid storage batteries is about 15-20%, and metal lead and sulfuric acid are recovered from the lead sulfate, so that the method is a key problem for realizing resource utilization of lead-containing waste materials. The traditional pyrogenic process related to the treatment of waste lead sulfate has two processes, one is to convert lead sulfate into lead carbonate through desulfurization, then obtain lead oxide through pyrolysis, and then obtain metallic lead through reduction in a smelting furnace. The other process is to match the waste lead sulfate with lead concentrate and carry out synergistic treatment and recovery in the primary lead smelting process. The wet process related to the treatment of waste lead sulfate can be divided into the following three processes. One is a three-stage conversion-leaching-electrodeposition method. The method comprises the steps of firstly, carrying out desulfurization conversion on lead sulfate, dissolving the lead sulfate in an acidic (or alkaline) solution to prepare a lead salt electrolyte, taking graphite as an anode and a stainless steel plate as a cathode, and obtaining metallic lead on the surface of the cathode after electrolytic deposition; the second is direct leaching-electrodeposition two-stage process. Directly leaching lead sulfate by using a hot HCl-NaCl solution to form a lead chloride solution, purifying the lead chloride solution to be used as an electrolyte, separating a cathode chamber and an anode chamber by using a cation exchange membrane, and obtaining metallic lead at the bottom of the cathode chamber after electrolysis; the third is a direct electrolysis method represented by a solid-phase electrolytic reduction method. The method takes sodium hydroxide solution as electrolyte, attaches the material containing waste lead sulfate on the surface of an electrode, and obtains metallic lead at a cathode after electrolysis.
In the prior art, the defects of low recovery rate, serious secondary pollution, high energy consumption and the like exist in the pyrogenic treatment and recovery, and the defects of complex process flow, high chemical dosage, low utilization value, more byproducts, high cost and the like exist in the wet treatment and recovery.
Disclosure of Invention
The invention aims to provide a method for recovering metallic lead and sulfuric acid from waste lead sulfate, aiming at the technical analysis, the method directly recovers the metallic lead and the sulfuric acid from the waste lead sulfate by a wet method without desulfurization treatment, and realizes the high-efficiency and environment-friendly recovery of the waste lead sulfate.
The technical scheme of the invention is as follows:
a method for recovering metallic lead and sulfuric acid from waste lead sulfate comprises the following steps:
the method comprises the steps of uniformly mixing waste lead sulfate with the granularity of less than or equal to 5mm and an additive with the granularity of less than or equal to 5mm, and concentrating the mixture of the waste lead sulfate and the additive and adding a type A conductive material to form a bipolar plate. The additive materials can be metallic lead, carbon powder, graphite and lead dioxide, and the proportion range is that the additive materials account for 80-5% of the mass of the waste lead sulfate. The method for concentrating the mixture of the waste lead sulfate and the additive materials comprises the steps of tabletting, briquetting, stacking and bagging. The A conductive material can be carbonaceous material including graphite, 304, 309S, 310S, 316L, 317L and 904L stainless steel, lead and alloy, gold and alloy, platinum and alloy, and the structural shape of the A conductive material can be plate-shaped, cylindrical, arc-shaped, net-shaped, mesh-shaped, fork-shaped or wire-disk-shaped. The A kind of conductive material can be added in the process of tabletting or briquetting the mixture of waste lead sulfate and additive material, or can be stacked on the flaky pole material, and the mixture of waste lead sulfate and additive material can be inserted in the flaky pole material when the mixture is bagged.
And forming a second pole by using a second conductive material. The material of the B type conductive material can be carbonaceous material containing graphite, lead, gold and alloy, platinum and alloy, and the structural shape can be plate-shaped, cylindrical, arc-shaped, net-shaped or mesh-shaped.
And thirdly, placing the anode A and the anode B into the container according to a certain positional relationship. The position relation of the A pole and the B pole in the container can be vertical parallel, horizontal parallel, vertical coaxial cylindrical surface and horizontal coaxial cylindrical surface, and the A pole and the B pole in the horizontal parallel state can be up and down mutually.
And fourthly, the first pole is connected with the negative pole of the power supply, and the second pole is connected with the positive pole of the power supply.
And adding distilled water into the container in an amount capable of immersing the anode and the cathode, adjusting the pH value to be between 1 and 3 by using sulfuric acid, and enabling the density to be between 1.001 and 1.500 g/cubic centimeter at 25 ℃.
Sixthly, starting a power supply to electrify, wherein the electrified voltage and current can be adjusted, the electrified voltage is more than or equal to 2 volts, and the electrified processing time range is more than or equal to 5-600 minutes. The power supply can be a steady direct current power supply, a half-wave ballast power supply, a full-wave ballast power supply and a positive pulse power supply; the pulse alternating power supply can also be a pulse alternating power supply, the pulse alternating power supply is formed by alternately compounding positive pulses and negative pulses, the positive effective value of the pulses is larger than the effective value of the negative pulses, and the ratio of the effective value of the positive pulses to the effective value of the negative pulses is larger than 1.
After treatment, the waste lead sulfate on the methyl is converted into metallic lead and sulfuric acid, the metallic lead is recovered from the methyl, and the generated sulfuric acid exists in the solution in the container.
The invention has the advantages that: the method can recover metallic lead and dilute sulfuric acid from waste lead sulfate, has short process flow, low energy consumption and no salt by-product in the treatment process, and the recovered lead and acid are easy to be reused in the production process of lead-acid storage batteries, thereby being an alternative technology for a pyrogenic process and a wet treatment process requiring desulfurization.
Detailed Description
Example 1:
an implementation method for recovering metallic lead and sulfuric acid from waste lead sulfate comprises the following steps:
the method comprises the steps of uniformly mixing waste lead sulfate with the granularity of less than or equal to 0.15 mm and metal lead powder with the granularity of less than or equal to 0.15 mm, wherein the added metal lead powder accounts for 15% of the mass of the waste lead sulfate, filling the mixture of the waste lead sulfate and the metal lead powder into a square electrode bag, inserting a lead net into the electrode bag during bagging to make a first kind of conductive material, uniformly compacting after filling, and the bagging thickness is about 20 mm.
And the lead plate is used as a second conductive material to form a second pole, and the projection areas of the second pole and the first pole are correspondingly equal.
Thirdly, the A pole and the B pole are vertically placed into the container in a parallel mode, the distance is kept at 10 mm, and if the A pole and the B pole are provided with a plurality of pieces, the A pole and the B pole can be alternately placed in a parallel mode.
And fourthly, connecting the first pole with the negative pole of the power supply, connecting the second pole with the positive pole of the power supply, and connecting the first pole and the second pole in parallel with the negative pole and the positive pole of the power supply respectively in the case of multiple poles.
And fifthly, adding distilled water into the container in an amount capable of immersing the anode and the cathode, adjusting the pH value to be 1-3 by using sulfuric acid, and enabling the density to be 1.010-1.050 g/cc at 25 ℃.
Sixthly, starting a power supply to be electrified, wherein the electrified voltage and current can be adjusted, the electrified voltage is more than or equal to 2V, the average current density between each pair of the A pole and the B pole is 600 amperes/square meter, the electrified processing time is 320 minutes, and the used power supply is a stable direct current power supply.
And converting waste lead sulfate on the treated methyl into metallic lead and sulfuric acid, recovering the metallic lead from the methyl, wherein the generated sulfuric acid exists in a solution in a container, and the relative density of the recovered sulfuric acid is more than 1.010-1.700 g/cc.
Example 2:
an implementation method for recovering metallic lead and sulfuric acid from waste lead sulfate comprises the following steps:
the method comprises the steps of uniformly mixing waste lead sulfate with the granularity of less than or equal to 0.25 mm and coke powder with the granularity of less than or equal to 0.15 mm, filling the mixture of the waste lead sulfate and the coke powder into a square electrode bag, inserting a lead net into the electrode bag during bagging to be made into a first-kind conductive material, uniformly compacting after filling, keeping the electrode and the material in reliable contact, and ensuring the bagging thickness to be about 20 mm.
And the lead plate is used as a second conductive material to form a second pole, and the projection areas of the second pole and the first pole are correspondingly equal.
Thirdly, the A pole and the B pole are horizontally placed into the container in parallel, the distance is kept about 10 mm, and if the A pole and the B pole are provided with a plurality of pieces, the A pole and the B pole can be alternately placed in parallel.
Fourth, under the condition of multiple poles, all poles are respectively connected with the negative pole and the positive pole of the power supply in series according to the first pole and the second pole, the first pole plate and the last pole plate are respectively connected with the negative pole and the positive pole of the power supply,
and fifthly, adding distilled water into the container in an amount capable of immersing the anode and the cathode, adjusting the pH value to be 1-3 by using sulfuric acid, and enabling the density to be 1.010-1.050 g/cc at 25 ℃.
Sixthly, starting a power supply to be electrified, wherein the electrified voltage and current can be adjusted, the distance between the pole pieces of the first pole and the pole pieces of the second pole is adjusted, the voltage between the adjacent pole pieces is equal to or more than 2V, the average current density between each pair of the pole pieces of the first pole and the pole pieces of the second pole is equal to or more than 550 and 600 ampere/square meters, the electrifying processing time is 320 minutes, and the used power supply is a steady direct-current power supply.
And converting waste lead sulfate on the treated methyl into metallic lead and sulfuric acid, recovering the metallic lead from the methyl, wherein the generated sulfuric acid exists in a solution in a container, and the relative density of the recovered sulfuric acid is more than 1.010-1.700 g/cc.
Example 3:
an implementation method for recovering metallic lead and sulfuric acid from waste lead sulfate comprises the following steps:
the method comprises the steps of uniformly mixing waste lead sulfate with the granularity of less than or equal to 0.5 mm and lead dioxide with the granularity of less than or equal to 0.15 mm, adding 75% of the lead dioxide waste lead sulfate, stacking the mixture of the waste lead sulfate and the lead dioxide waste lead sulfate on a plate-shaped square electrode, and uniformly spreading and compacting materials on a methyl shift.
And the lead plate is used as a second conductive material to form a second pole, and the areas of the second pole and the first pole are correspondingly equal.
Thirdly, horizontally placing the anode added with the mixed material of the waste lead sulfate and the lead dioxide into the lower part of the container, keeping the anode parallel and horizontally placing the cathode on the lower part of the container, and placing the anode plate on the anode with the distance of 10 mm.
The first pole and the second pole are respectively connected with a negative pole and a positive pole of the power supply.
And fifthly, adding distilled water into the container in an amount capable of immersing the anode and the cathode, adjusting the pH value to be 1-3 by using sulfuric acid, and controlling the density to be 1.010-1.050 g/cc at 25 ℃.
Sixthly, starting a power supply to be electrified, wherein the electrified voltage can be adjusted to ensure that the voltages between adjacent pole pieces are equal and more than or equal to 2V, the average current density between each pair of a pole A and a pole B is more than or equal to 550 and 600 amperes/square meter, the electrifying processing time is 320 minutes, and the used power supply is a stable and constant direct-current power supply.
And converting waste lead sulfate on the treated methyl into metallic lead and sulfuric acid, recovering the metallic lead from the methyl, wherein the generated sulfuric acid exists in a solution in a container, and the relative density of the recovered sulfuric acid is more than 1.010-1.700 g/cc.
Example 4:
an implementation method for recovering metallic lead and sulfuric acid from waste lead sulfate comprises the following steps:
the method comprises the steps of uniformly mixing waste lead sulfate with the granularity of less than or equal to 0.5 mm and lead dioxide with the granularity of less than or equal to 0.15 mm, wherein the mass of the added lead dioxide is 100% of that of the waste lead sulfate. Lead plate is used as conductive material and made into cylindrical anode.
And manufacturing a cylindrical anode by using a lead-carrying plate as a conductive material of the second kind, wherein the outer diameter of the cylindrical anode is 50 mm smaller than that of a barrel armor, the height of the cylindrical anode is equal to that of the cylindrical anode, manufacturing an anode isolation cover and an anode isolation cover by using an acid-resistant electrode bag material, wherein the inner diameter of the anode isolation cover is 10 mm larger than the outer diameter of the anode, the radial thickness of the isolation cover is 10 mm, and the height of the isolation cover is equal to that of the anode and the. And (3) coaxially assembling the anode, the shield and the cathode, and filling the prepared waste lead sulfate and lead dioxide mixture between the anode and the shield, wherein the volume of the filled mixture accounts for 50% of the space between the anode and the shield.
Thirdly, distilled water is added into the space between the anode and the cathode, a small amount of sulfuric acid is added to adjust the pH value to 1, the distilled water is uniformly mixed with the added materials and can be in a flowing slurry state, the two ends of the anode and the cathode are fixed by end covers and can be ventilated and placed horizontally, and power is applied to enable the assembly body to rotate along the axis.
The first pole and the second pole are respectively connected with a negative pole and a positive pole of the power supply.
And fifthly, starting the power supply for electrifying, wherein the electrified voltage can be adjusted to ensure that the voltages between the adjacent pole pieces are equal and more than or equal to 2 volts, the average current density between each pair of the first pole and the second pole is more than or equal to 550-600 amperes/square meter, the electrifying processing time is 320 minutes, and the used power supply is a stable and constant direct-current power supply.
Sixthly, converting the waste lead sulfate on the processed nail electrode into metallic lead and sulfuric acid, recycling the metallic lead from the cylindrical nail electrode, and enabling the generated dilute sulfuric acid to be in a solution in a cylinder.
Claims (10)
1. A method for recovering metallic lead and sulfuric acid from waste lead sulfate is characterized in that:
uniformly mixing waste lead sulfate with the granularity of less than or equal to 5mm and an adding material with the granularity of less than or equal to 5mm, and concentrating the mixture of the waste lead sulfate and the adding material and adding a first kind of conductive material to form a first pole;
forming a second pole by using a second conductive material;
thirdly, placing the anode A and the anode B into the container according to a certain position relation;
fourthly, the first pole is connected with the negative pole of the power supply, and the second pole is connected with the positive pole of the power supply;
fifthly, adding distilled water or dilute sulfuric acid into the container, adjusting the pH value to be 1-3 by using sulfuric acid when adding distilled water, wherein the addition amount is required to immerse the anode A and the anode B;
sixthly, starting a power supply to electrify, wherein the electrified voltage and current can be adjusted, the electrified voltage is more than or equal to 2 volts, and the electrified processing time range is more than or equal to 5-600 minutes;
after treatment, the waste lead sulfate on the methyl is converted into metallic lead and sulfuric acid, the metallic lead is recovered from the methyl, and the generated sulfuric acid exists in the solution in the container.
2. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, characterized in that the additive materials in the step include, but are not limited to, metallic lead, carbon powder, graphite and lead dioxide, and the mixing ratio is in the range of 0.1-2 times of the mass of the additive materials in the waste lead sulfate.
3. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, characterized in that the method for concentrating the mixture of waste lead sulfate and the additive material in the step is tabletting, briquetting, stacking and bagging.
4. The method of recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, wherein the first conductive material of step includes, but is not limited to, carbon, graphite, and 304, 309S, 310S, 316L, 317L, 904L stainless steel, and lead and its alloys, gold and its alloys, platinum and its alloys; the structural shape of the conductive material A includes, but is not limited to, plate, cylinder, arc, mesh, fork, and wire disc.
5. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, wherein the first conductive material is added in a manner of being embedded when a mixture of the waste lead sulfate and the additive material is formed into a tablet or a briquette, or being stacked on a sheet-like pole material, or being inserted when the mixture of the waste lead sulfate and the additive material is bagged.
6. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, wherein the conductive material is selected from the group consisting of carbonaceous materials including graphite, lead and its alloys, gold and its alloys, platinum and its alloys, and has a structural shape including but not limited to a plate shape, a cylinder shape, an arc shape, a net shape, and a mesh shape.
7. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, wherein the step three, the anode and the cathode are in a positional relationship in the container, including but not limited to vertical parallel, horizontal parallel, vertical coaxial cylindrical surface, horizontal coaxial cylindrical surface, and the anode and the cathode in a horizontal parallel state are positioned above and below each other.
8. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, wherein the dilute sulfuric acid in step fifthly has a density of 1.001 to 1.500 g/cc at 25 ℃.
9. The method for recovering metallic lead and sulfuric acid from waste lead sulfate according to claim 1, wherein the power supply in the step sixteenth is one of a steady direct current power supply, a half-wave ballast power supply, a full-wave ballast power supply and a positive pulse power supply, or a pulse alternating power supply; the pulse alternating power source is formed by alternately compounding positive pulses and negative pulses, the positive effective value of the pulses is larger than that of the negative pulses, and the ratio of the positive effective value of the positive pulses to the negative effective value of the negative pulses is larger than 1.
10. A method for recovering metallic lead and sulfuric acid from waste lead sulfate according to any one of claims 1 to 9, wherein the recovered materials are metallic lead and sulfuric acid, and the relative density of the recovered sulfuric acid is 1.001 to 1.700 g/cc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011251683.XA CN113106495A (en) | 2020-11-11 | 2020-11-11 | Method for recovering metallic lead and sulfuric acid from waste lead sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011251683.XA CN113106495A (en) | 2020-11-11 | 2020-11-11 | Method for recovering metallic lead and sulfuric acid from waste lead sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113106495A true CN113106495A (en) | 2021-07-13 |
Family
ID=76709013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011251683.XA Pending CN113106495A (en) | 2020-11-11 | 2020-11-11 | Method for recovering metallic lead and sulfuric acid from waste lead sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113106495A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150032A2 (en) * | 1984-01-24 | 1985-07-31 | HAGEN Batterie AG | Process for the recovery of lead from accumulator scraps and reduction plate therefor |
| CN101188321A (en) * | 2007-06-28 | 2008-05-28 | 昆明理工大学 | A method for recycling lead of abandoned lead acid accumulator |
| CN101748277A (en) * | 2008-12-03 | 2010-06-23 | 江苏航虹电源有限公司 | Method for recovering lead from waste lead acid batteries |
| CN111455404A (en) * | 2020-04-29 | 2020-07-28 | 华中科技大学 | Method for recovering lead from waste lead paste by solid-phase electrolysis method |
-
2020
- 2020-11-11 CN CN202011251683.XA patent/CN113106495A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150032A2 (en) * | 1984-01-24 | 1985-07-31 | HAGEN Batterie AG | Process for the recovery of lead from accumulator scraps and reduction plate therefor |
| CN101188321A (en) * | 2007-06-28 | 2008-05-28 | 昆明理工大学 | A method for recycling lead of abandoned lead acid accumulator |
| CN101748277A (en) * | 2008-12-03 | 2010-06-23 | 江苏航虹电源有限公司 | Method for recovering lead from waste lead acid batteries |
| CN111455404A (en) * | 2020-04-29 | 2020-07-28 | 华中科技大学 | Method for recovering lead from waste lead paste by solid-phase electrolysis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105937039A (en) | Method for recycling lithium in lithium battery cathode materials by electrochemical method | |
| Chen et al. | Integrating electrodeposition with electrolysis for closed-loop resource utilization of battery industrial wastewater | |
| CN101318692B (en) | Method for preparing high quality lead dioxide with plumbum mud in waste lead acid accumulator | |
| CN109346741B (en) | Method for recycling waste positive electrode material of lithium battery | |
| CN105406143A (en) | Method for preparing lead storage battery electrode plate from lead-bearing compound in waste lead storage battery as raw material | |
| CN101748277A (en) | Method for recovering lead from waste lead acid batteries | |
| WO2018014747A1 (en) | Process for preparing lead by means of ammonium sulfate ammonia electroreduction | |
| CN104037468A (en) | Method for recycling manganese and copper resources from waste lithium ion batteries | |
| CN101906646B (en) | Method for preparing iron metal by molten salt electrolysis of iron ore | |
| CN107098556A (en) | The method that recycling sludge in Wire Rope Production reclaims metal | |
| CN106803588B (en) | A kind of recycling and reusing method of sodium sulfate waste liquid | |
| WO2018014748A1 (en) | Process for preparing lead with ammonia electroreduction in ammonium chloride | |
| CN101974767A (en) | Method for preparing tungsten powder by fused salt electrolysis | |
| CN109585962B (en) | Method for resource utilization of waste lithium battery anode material | |
| CN109524735B (en) | Recovery method of waste lithium iron phosphate-lithium titanate battery | |
| CN108360025B (en) | A kind of method that aqueous solution electrolysis solid metallic sulfide prepares metal | |
| CN102170009A (en) | Solid oxide direct carbon fuel cell stack of tablet bubbling bed | |
| CN201864610U (en) | Folded plate type cathode strengthening electrochemical device for treating wastewater containing heavy metal | |
| CN105244563A (en) | Preparation method of lead storage battery negative plate by using lead-containing compound in waste lead storage battery as raw material | |
| CN105226343A (en) | With the lead-containing compounds in waste lead accumulator for the method for positive plate of lead storage battery prepared by raw material | |
| CN101188321A (en) | A method for recycling lead of abandoned lead acid accumulator | |
| CN113106495A (en) | Method for recovering metallic lead and sulfuric acid from waste lead sulfate | |
| CN109179801B (en) | Treatment method of trivalent chromium electroplating waste liquid | |
| CN101717954A (en) | Method and device for preparing pure iron by utilizing solar-photovoltaic technology with low carbon | |
| CN100497747C (en) | Method for combined production of hydrogen and hydroxide by water electrolysis with low power consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |