CN105925807B - A kind of recovery process of waste battery lead - Google Patents
A kind of recovery process of waste battery lead Download PDFInfo
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- CN105925807B CN105925807B CN201610358244.6A CN201610358244A CN105925807B CN 105925807 B CN105925807 B CN 105925807B CN 201610358244 A CN201610358244 A CN 201610358244A CN 105925807 B CN105925807 B CN 105925807B
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
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- 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
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
- C22B13/045—Recovery from waste materials
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- 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
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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- 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
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- 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
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- 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
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- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Processing Of Solid Wastes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Electrolytic Production Of Metals (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention relates to battery recycling equipment technical field more particularly to a kind of recovery process of waste battery lead, completes in accordance with the following steps：Lead accumulator is broken through mechanical cutting, then is rinsed and is screened using alkaline solution simultaneously by turning sieve washer, filters out plastics, waste electrolyte and lead bullion, waste electrolyte is transported in ultrafiltration membrane treatment system and is handled；Ceruse carries out electromagnetic induction heating, and is filled with enough oxygen, and electromagnetic induction frequency is 8 ~ 60KHz, controls 330 ~ 460 DEG C of temperature, keeps the temperature 5 6h, will obtain the lead orthoplumbate of complete oxidation；Apply electromagnetic induction magnetic field in bottom of electrolytic tank during electrolysis, magnetic induction intensity 800mT obtains No. 1 pure lead of national standard.Beneficial effects of the present invention are：The present invention realizes the refining of lead using being electrolysed and coordinating the method for electromagnetism, and the purity of lead is not only made to be greatly improved, and the repetition for also achieving noble metal recycles, present invention process is simple, handling ease is suitble to high-volume to recycle, low to reduce cost recovery.
Description
Technical field
The present invention relates to battery recycling equipment technical field more particularly to a kind of recovery process of waste battery lead.
Background technology
Currently, China's reviver industry, be under conditions of paying attention to environmental protection and comprehensive utilization of resources policy requirements by
What step grew up.With the rapid development of China's automobile, communication and chemical industry, the requirement to lead is continuously improved, reviver
Industry, which has become, realizes the indispensable important component of lead metal industrial sustainable development strategy.
Stereotype and lead pipe often make to smelt and chemical industry equipment antiseptic acidproof lining, corrosion cap, lead are also serving as atomic energy industry
With the protective layer and protecting screen of X-ray.The compound of lead is for pigment industry, glass industry, petroleum industry and medical department etc..
But lead is during processing refinement, other than containing the impurity such as Cu, Sn, As, Sb, also contains noble metal and other are miscellaneous
Matter.Due to the presence of impurity, not only so that the hardness of lead increases, ductility and corrosion stability reduce, and are not suitable for industrial application, and right
Waste is also resulted in noble metal therein.
Invention content
It is an object of the invention to be directed to the existing state of the art, lead bullion in a kind of environmental protection, efficient waste battery is provided
Recovery process, and be capable of the lead pig of high purity.
A kind of recovery process of waste battery lead, which is characterized in that complete in accordance with the following steps：
(1), lead accumulator is broken through mechanical cutting, then is rinsed and is sieved using alkaline solution simultaneously by turning sieve washer
Choosing, filters out plastics, waste electrolyte and lead bullion, waste electrolyte is transported in ultrafiltration membrane treatment system and is handled；
(2), step（1）Treated waste electrolyte and lead bullion discharge into desulfurizing tower and carry out precipitation filtering, in waste electrolyte and
Enough dilute sulfuric acids are added in lead bullion and are heated to 100 ~ 200 DEG C, are fully converted to lead sulfate, stop reaction；
(3), it filters, filter cake to neutrality, obtains wet product, then wet product is put into baking oven, at 160 DEG C wash with distilled water
It is dried under conditions of above, obtains dry ground lead sulfate and be cooled to room temperature；
(4), by step（3）In obtained lead sulfate the solution of potassium carbonate of saturation is added, and control reaction system be pH 8 ~
9, fully after reaction, heating stirring reacts 3-7h so that lead sulfate is fully converted to ceruse, then is excessively rinsed simultaneously by clear water
And it dries；
(5), by high temperature furnace to step（4）Ceruse carry out electromagnetic induction heating, and be filled with enough oxygen, electromagnetism
Induction frequencies are 8 ~ 60kHz, control 330 ~ 460 DEG C of temperature, keep the temperature 5-6h, will obtain the lead orthoplumbate of complete oxidation；
(6), electrolyte solution is poured into electrolytic cell, for lead orthoplumbate to be refined as anode plate, cathode plate is pure lead
Plate is passed through direct current, and controls 550 ~ 600A/m of cathode-current density2, electrolyte 10 ~ 25L/min of internal circulating load, electrolyte temperature
20 ~ 40 DEG C of degree；
(7), according to step（6）Under be at least electrolysed 3 ~ 4 days, apply electromagnetic induction magnetic field in bottom of electrolytic tank during electrolysis,
Magnetic induction intensity is 500 ~ 800mT, is quickly obtained after cathode output lead and the anode output earth of positive pole, cathode lead melting and casting
No. 1 pure lead of national standard.
In said program, the alkaline solution uses in potassium hydroxide, sodium carbonate, calcium bicarbonate or potassium bicarbonate solution
One or more；The concentration range of the alkaline solution is 15% ~ 20%.
In said program, the step（2）In waste electrolyte and the brown lead oxide in both lead bullion and dilute sulfuric acid object
The ratio between amount of matter is 1.5 ~ 2：1.
In said program, the electrolyte solution is using one in silicofluoric acid, free pyrovinic acid, sulfamic acid solution
Kind is several.
In said program, the material of the ultrafiltration membrane of the ultrafiltration membrane treatment system is using polyether sulfone, polypropylene and compound poly-
One kind in vinyl chloride.
In said program, the membrane aperture of the ultrafiltration membrane of the ultrafiltration membrane treatment system is 0.02 μm ~ 0.04 μm.
In said program, the step（5）Middle electromagnetic induction frequency is 50kHz, and lead electronics may make to be easier to convert
For pure lead.
Compared with the prior art, beneficial effects of the present invention are：
The present invention realizes the refining of lead using being electrolysed and coordinating the method for electromagnetism, and the purity of lead is not only made to have obtained greatly
Ground improves, and the repetition for also achieving noble metal recycles, and present invention process is simple, handling ease, and high-volume is suitble to recycle, from
And it is low to reduce cost recovery；The present invention handles the lead plaster after conversion using the not mode of smelting, and carries out at a lower temperature, because
This almost without lead steam pollution.
Specific implementation mode：
In order to enable juror to be further understood that the purpose, feature and function of the present invention, hereby lifts and preferably implement
Detailed description are as follows for example：
Embodiment 1
A kind of recovery process of waste battery lead, which is characterized in that complete in accordance with the following steps：
(1), lead accumulator is broken through mechanical cutting, then is rinsed and is sieved using alkaline solution simultaneously by turning sieve washer
Choosing, filters out plastics, waste electrolyte and lead bullion, waste electrolyte is transported in ultrafiltration membrane treatment system and is handled；
(2), step（1）Treated waste electrolyte and lead bullion discharge into desulfurizing tower and carry out precipitation filtering, in waste electrolyte and
Enough dilute sulfuric acids are added in lead bullion and are heated to 100 ~ 200 DEG C, are fully converted to lead sulfate, stop reaction；
(3), it filters, filter cake to neutrality, obtains wet product, then wet product is put into baking oven, at 160 DEG C wash with distilled water
It is dried under conditions of above, obtains dry ground lead sulfate and be cooled to room temperature；
(4), by step（3）In obtained lead sulfate the solution of potassium carbonate of saturation is added, and control reaction system be pH 8 ~
9, fully after reaction, heating stirring reacts 3-7h so that lead sulfate is fully converted to ceruse, then is excessively rinsed simultaneously by clear water
And it dries；
(5), by high temperature furnace to step（4）Ceruse carry out electromagnetic induction heating, and be filled with enough oxygen, electromagnetism
Induction frequencies are 8 ~ 60kHz, control 330 ~ 460 DEG C of temperature, keep the temperature 5-6h, will obtain the lead orthoplumbate of complete oxidation；The step
Rapid chemical equation is：
PbCO3= PbO+CO2
6PbO+O2= 2Pb3O4
(6), electrolyte solution is poured into electrolytic cell, for lead orthoplumbate to be refined as anode plate, cathode plate is pure lead
Plate is passed through direct current, and controls 550 ~ 600A/m2 of cathode-current density, electrolyte 10 ~ 25L/min of internal circulating load, electrolyte temperature
20 ~ 40 DEG C of degree；
On anode plate：Pb-2e= Pb2+
On cathode plate：Pb2++2e= Pb
(7), according to step（6）Under be at least electrolysed 3 ~ 4 days, apply electromagnetic induction magnetic field in bottom of electrolytic tank during electrolysis,
Magnetic induction intensity is 500 ~ 800mT, is quickly obtained after cathode output lead and the anode output earth of positive pole, cathode lead melting and casting
No. 1 pure lead of national standard.
In said program, the alkaline solution uses in potassium hydroxide, sodium carbonate, calcium bicarbonate or potassium bicarbonate solution
One or more；The concentration range of the alkaline solution is 15% ~ 20%.
In said program, the step（2）In waste electrolyte and the brown lead oxide in both lead bullion and dilute sulfuric acid object
The ratio between amount of matter is 1.5 ~ 2：1.
In said program, the electrolyte solution is using one in silicofluoric acid, free pyrovinic acid, sulfamic acid solution
Kind is several.
In said program, the material of the ultrafiltration membrane of the ultrafiltration membrane treatment system is using polyether sulfone, polypropylene and compound poly-
One kind in vinyl chloride.
In said program, the membrane aperture of the ultrafiltration membrane of the ultrafiltration membrane treatment system is 0.02 μm ~ 0.04 μm.
In said program, the step（5）Middle electromagnetic induction frequency is 50kHz.
Embodiment 2
A kind of recovery process of waste battery lead, which is characterized in that complete in accordance with the following steps：
(1), lead accumulator is broken through mechanical cutting, then is rinsed and is sieved using potassium hydroxide simultaneously by turning sieve washer
Choosing, filters out plastics, waste electrolyte and lead bullion, waste electrolyte is transported in ultrafiltration membrane treatment system and is handled, using hydrogen-oxygen
Change potassium with potassium carbonate with the production object of position potassium, not will produce extra metal ion, and potassium element belongs to more active gold
Belong to, it is not easy to be replaced and be highly soluble in water, be easily processed；
(2), step（1）Treated waste electrolyte and lead bullion discharge into desulfurizing tower and carry out precipitation filtering, in waste electrolyte and
Enough dilute sulfuric acids are added in lead bullion and are heated to 100 DEG C, are fully converted to lead sulfate, stop reaction；
(3), it filters, filter cake to neutrality, obtains wet product, then wet product is put into baking oven, at 180 DEG C wash with distilled water
Under conditions of dried, obtain dry ground lead sulfate and be cooled to room temperature；
(4), by step（3）In obtained lead sulfate the solution of potassium carbonate of saturation is added, and it is pH 8 to control reaction system,
Fully after reaction, heating stirring reacts 5h so that the lead sulfate in waste electrolyte is fully converted to ceruse, then passes through clear water mistake
Amount is rinsed and is dried；
(5), by high temperature furnace to step（4）Ceruse carry out electromagnetic induction heating, and be filled with enough oxygen, electromagnetism
Induction frequencies are 50kHz, controlled at 460 DEG C, keep the temperature 6h, will obtain the lead orthoplumbate of complete oxidation；
(6), silicofluoric acid is easy to pour into electrolytic cell, for lead orthoplumbate to be refined as anode plate, cathode plate is pure lead
Plate is passed through direct current, and controls cathode-current density 580A/m2, electrolyte internal circulating load 10L/min, 20 DEG C of electrolyte temperature；
(7), according to step（6）Under be at least electrolysed 3 days, apply electromagnetic induction magnetic field, magnetic in bottom of electrolytic tank during electrolysis
Induction is 750mT, quickly obtains national standard 1 after cathode output lead and the anode output earth of positive pole, cathode lead melting and casting
Number pure lead, the conversion ratio of lead orthoplumbate is by detection up to 99.70%.
Embodiment 3
(1), lead accumulator is broken through mechanical cutting, then is rinsed and is sieved using alkaline solution simultaneously by turning sieve washer
Choosing, filters out plastics, waste electrolyte and lead bullion, waste electrolyte is transported in ultrafiltration membrane treatment system and is handled；
(2), step（1）Treated waste electrolyte and lead bullion discharge into desulfurizing tower and carry out precipitation filtering, in waste electrolyte and
Enough dilute sulfuric acids are added in lead bullion and are heated to 100 DEG C, are fully converted to lead sulfate, stop reaction；
(3), it filters, filter cake to neutrality, obtains wet product, then wet product is put into baking oven, at 160 DEG C wash with distilled water
Under conditions of dried, obtain dry ground lead sulfate and be cooled to room temperature；
(4), by step（3）In obtained lead sulfate the solution of potassium carbonate of saturation is added, and control reaction system be pH 8 ~
9, fully after reaction, heating stirring reacts 3-7h so that the lead sulfate in waste electrolyte is fully converted to ceruse, then by clear
Water is excessively rinsed and is dried；
(5), by high temperature furnace to step（4）Ceruse carry out electromagnetic induction heating, and be filled with enough oxygen, electromagnetism
Induction frequencies are 8kHz, control 330 DEG C of temperature, keep the temperature 6h, will obtain the lead orthoplumbate of complete oxidation；
(6), electrolyte solution is easy to pour into electrolytic cell, lead orthoplumbate to be refined is as anode plate, cathode plate
Pure stereotype is passed through direct current, and controls cathode-current density 550A/m2, electrolyte internal circulating load 10L/min, electrolyte temperature
20℃；
(7), according to step（6）Under be at least electrolysed 3 ~ 4 days, apply electromagnetic induction magnetic field in bottom of electrolytic tank during electrolysis,
Magnetic induction intensity is 500mT, quickly obtains national standard after cathode output lead and the anode output earth of positive pole, cathode lead melting and casting
No. 1 pure lead, the conversion ratio of lead orthoplumbate is by detection up to 98%.
Embodiment 4
Other steps are identical as implementing 2, only in step（6）In electrolyte solution free methyl sulphur is changed to by silicofluoric acid
Acid is easy, and No. 1 pure lead of high-purity is finally obtained after electrolysis, and the conversion ratio of lead orthoplumbate passes through detection up to 99.56%,
Its electrolyte solution avoids generating harmful gas.
Embodiment 5
Other steps are identical as implementing 2, only in step（7）In magnetic induction intensity be 800mT, finally after electrolysis
No. 1 pure lead of high-purity is obtained, by detection up to 99.85%, conversion ratio is greatly carried the conversion ratio of lead orthoplumbate
It is high.
Those of ordinary skills in the art should understand that：The above is only a specific embodiment of the present invention, and
It is not used in the limitation present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done,
It should be included within protection scope of the present invention.
Claims (8)
1. a kind of recovery process of waste battery lead, which is characterized in that complete in accordance with the following steps：
(1), lead accumulator is broken through mechanical cutting, then is rinsed and is screened using alkaline solution simultaneously by turning sieve washer,
Plastics, waste electrolyte and lead bullion are filtered out, waste electrolyte is transported in ultrafiltration membrane treatment system and is handled；
(2), step（1）Treated waste electrolyte and lead bullion discharge into desulfurizing tower and carry out precipitation filtering, in waste electrolyte and lead bullion
It is middle that enough dilute sulfuric acid is added and is heated to 100 ~ 200 DEG C, it is fully converted to lead sulfate, stops reaction；
(3), it filters, filter cake to neutrality, obtains wet product, then wet product is put into baking oven, at 160 DEG C or more wash with distilled water
Under conditions of dried, obtain dry ground lead sulfate and be cooled to room temperature；
(4), by step（3）In obtained lead sulfate the solution of potassium carbonate of saturation is added, and it is pH 8 ~ 9 to control reaction system, is filled
After dividing reaction, heating stirring reacts 3-7h so that lead sulfate is fully converted to ceruse, then excessively rinses and dry by clear water
It is dry；
(5), by high temperature furnace to step（4）Ceruse carry out electromagnetic induction heating, and be filled with enough oxygen, electromagnetic induction
Frequency is 8 ~ 60kHz, controls 330 ~ 460 DEG C of temperature, keeps the temperature 5-6h, will obtain the lead orthoplumbate of complete oxidation；
(6), electrolyte solution is poured into electrolytic cell, for lead orthoplumbate to be refined as anode plate, cathode plate is pure stereotype, is led to
Enter direct current, and controls 550 ~ 600A/m of cathode-current density2, electrolyte 10 ~ 25L/min of internal circulating load, electrolyte temperature 20 ~
40℃；
(7), according to step（6）Under be at least electrolysed 3 ~ 4 days, apply electromagnetic induction magnetic field, magnetic strength in bottom of electrolytic tank during electrolysis
It is 500 ~ 800mT to answer intensity, quickly obtains national standard after cathode output lead and the anode output earth of positive pole, cathode lead melting and casting
No. 1 pure lead.
2. a kind of recovery process of waste battery lead according to claim 1, which is characterized in that the alkaline solution is adopted
With one or more of potassium hydroxide, sodium carbonate, calcium bicarbonate or potassium bicarbonate solution；The concentration range of the alkaline solution
It is 15% ~ 20%.
3. a kind of recovery process of waste battery lead according to claim 1, which is characterized in that the step（2）In
Waste electrolyte and both lead bullion in the ratio between brown lead oxide and the amount of dilute sulfuric acid substance be 1.5 ~ 2：1.
4. a kind of recovery process of waste battery lead according to claim 1, which is characterized in that the electrolyte solution
Using one or more of silicofluoric acid, free pyrovinic acid, sulfamic acid solution.
5. a kind of recovery process of waste battery lead according to claim 1, which is characterized in that the ultrafiltration membrane treatment system
The material of the ultrafiltration membrane of system uses one kind in polyether sulfone, polypropylene and composite polrvinyl chloride.
6. according to a kind of recovery process of waste battery lead described in claim 5, which is characterized in that the ultrafiltration membrane treatment
The membrane aperture of the ultrafiltration membrane of system is 0.02 μm ~ 0.04 μm.
7. according to a kind of recovery process of waste battery lead described in claim 1, which is characterized in that the step（5）
Middle electromagnetic induction frequency is 50 kHz.
8. according to a kind of recovery process of waste battery lead described in claim 1, which is characterized in that the step（7）
Middle magnetic induction intensity is 800 mT.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109378496A (en) * | 2018-10-25 | 2019-02-22 | 中盐金坛盐化有限责任公司 | Organic flow battery and its electrolyte recycling device based on salt cave |
| CN109585869B (en) * | 2018-10-25 | 2021-06-29 | 中盐金坛盐化有限责任公司 | Salt cavern-based electrolyte recovery method for organic flow battery |
| CN110104737A (en) * | 2019-05-15 | 2019-08-09 | 广东工业大学 | A kind of novel lead dioxide electrode preparation method and application with electrocatalytic oxidation property |
| CN111900508A (en) * | 2020-07-30 | 2020-11-06 | 安徽绿沃循环能源科技有限公司 | Method for recycling decommissioned ternary batteries |
| CN113846223A (en) * | 2021-10-16 | 2021-12-28 | 安徽省华鑫铅业集团有限公司 | Method for desulfurizing, processing and recycling lead slime of waste battery |
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| CN102070185A (en) * | 2010-12-20 | 2011-05-25 | 如皋市天鹏冶金有限公司 | Method for converting lead sulfate into lead tetraoxide |
| CN102306855A (en) * | 2011-08-22 | 2012-01-04 | 铜梁县诚信电极板厂 | Method for recycling lead plaster from waste lead storage battery |
| CN102306856A (en) * | 2011-08-22 | 2012-01-04 | 铜梁县诚信电极板厂 | Method for recycling waste lead storage battery |
| CN102826704A (en) * | 2012-09-20 | 2012-12-19 | 艾特克控股集团有限公司 | Recycle system for recycled water |
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2016
- 2016-05-26 CN CN201610358244.6A patent/CN105925807B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070185A (en) * | 2010-12-20 | 2011-05-25 | 如皋市天鹏冶金有限公司 | Method for converting lead sulfate into lead tetraoxide |
| CN102306855A (en) * | 2011-08-22 | 2012-01-04 | 铜梁县诚信电极板厂 | Method for recycling lead plaster from waste lead storage battery |
| CN102306856A (en) * | 2011-08-22 | 2012-01-04 | 铜梁县诚信电极板厂 | Method for recycling waste lead storage battery |
| CN102826704A (en) * | 2012-09-20 | 2012-12-19 | 艾特克控股集团有限公司 | Recycle system for recycled water |
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