CN114430025A - Environment-friendly process for preparing high-energy-storage battery plate by using secondary lead - Google Patents
Environment-friendly process for preparing high-energy-storage battery plate by using secondary lead Download PDFInfo
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- CN114430025A CN114430025A CN202210092571.7A CN202210092571A CN114430025A CN 114430025 A CN114430025 A CN 114430025A CN 202210092571 A CN202210092571 A CN 202210092571A CN 114430025 A CN114430025 A CN 114430025A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000004146 energy storage Methods 0.000 title claims abstract description 15
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000001035 drying Methods 0.000 claims abstract description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 229910001245 Sb alloy Inorganic materials 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 239000002140 antimony alloy Substances 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 239000002142 lead-calcium alloy Substances 0.000 claims abstract description 4
- 238000001723 curing Methods 0.000 claims description 52
- 239000002245 particle Substances 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 claims description 8
- 230000003020 moisturizing effect Effects 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910000464 lead oxide Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- XMFOQHDPRMAJNU-UHFFFAOYSA-N lead(II,IV) oxide Inorganic materials O1[Pb]O[Pb]11O[Pb]O1 XMFOQHDPRMAJNU-UHFFFAOYSA-N 0.000 claims description 3
- 238000013008 moisture curing Methods 0.000 claims description 3
- 238000006479 redox reaction Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000013543 active substance Substances 0.000 abstract description 2
- -1 melting pure lead Chemical compound 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
- H01M4/21—Drying of pasted electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/68—Selection of materials for use in lead-acid accumulators
- H01M4/685—Lead alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/73—Grids for lead-acid accumulators, e.g. frame plates
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses an environment-friendly process for preparing a high-energy storage battery plate by using secondary lead, which comprises the following steps of (1) manufacturing lead powder, namely melting pure lead, casting the lead powder into lead powder with a certain specification by using a lead powder machine, and (2) casting a grid, wherein a lead-antimony alloy, a lead-calcium alloy or other alloys are cast into different types of grids with composite requirements in a gravity casting manner; (3) manufacturing a polar plate, namely mixing lead powder, dilute sulfuric acid and an additive, smearing lead paste prepared after mixing on the surface of a grid by using a smearing machine, and then drying and curing to obtain a green polar plate; (4) the invention has reasonable structure, reduces the production cost by optimizing the production process of lead powder, improves the working efficiency, optimizes the prior pole plate curing process, thereby controlling the content of free metallic lead, leading the combination of a grid and an active substance to be firmer, reducing the interface resistance and improving the charging efficiency.
Description
Technical Field
The invention relates to the technical field of storage batteries, in particular to an environment-friendly process for preparing a high-energy storage battery plate by using secondary lead.
Background
The development of lead acid battery has been for a long time, has the dependable performance, the production technology is ripe, advantage with low costs, wide application in the electric motor car, in making lead acid battery, the solidification and the drying of living polar plate are the key process in the lead acid battery polar plate manufacturing process, direct influence becomes the mechanical strength and the electrical property of back polar plate, and the difficult control of water content of current polar plate solidification technology, component content can not reach technical index, make the battery capacity, the life-span is difficult to keep, consequently, this problem that exists among the prior art is solved to a technique that awaits urgent attention.
Disclosure of Invention
The invention aims to provide an environment-friendly process for preparing a high-energy-storage battery plate by using secondary lead, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly process for preparing a high-energy storage battery plate by using secondary lead comprises the following steps: (1) the lead powder is manufactured, pure lead is melted firstly, then the lead powder with certain specification is cast by a lead powder machine, and the parameter value of the lead powder reaches certain standard through air separation; (2) casting a grid, namely casting a lead-antimony alloy, a lead-calcium alloy or other alloys into different types of grids with composite requirements in a gravity casting mode; (3) manufacturing a polar plate, mixing lead powder, dilute sulfuric acid and an additive, smearing lead paste prepared after mixing on the surface of a grid by using a smearing machine, and then drying and curing to obtain a green polar plate; (4) and (3) forming a polar plate, carrying out redox reaction on the polar plate and dilute sulfuric acid under the action of direct current to generate lead oxide, and finally cleaning and drying to obtain the storage battery polar plate.
Preferably, the specific steps of melting the pure lead in the step 1 are as follows: a. firstly, when lead is dissolved, pure lead is slowly fed into a lead melting furnace, and electric lead is melted by flame; b. after the lead liquid covers half of the height of the electric heating tube in the furnace, starting electric heating, and setting a certain heating temperature; c. after the lead is melted and reaches the set temperature, the lead conveying pipe is heated by cutting flame, then the lead pump is started, and when the lead strip does not need to be cast, the lead liquid flows back into the furnace.
Preferably, the temperature in the step b is set to be 390-410 ℃, and the height of the lead liquid level is kept to be about 10cm away from the opening of the lead melting furnace.
Preferably, in the step 1, the content of the elemental metal in the lead powder is 20% -30%, the average particle size of the lead powder particles with the particle size larger than 45 micrometers is smaller than 1%, the surfaces of the lead powder particles are PbO and Pb3O4, and the oxidation degree of the lead powder is 73% -80%.
Preferably, the specific steps of curing the electrode plate in the step 3 are as follows: a. firstly, placing a polar plate in a curing chamber, and enabling the polar plate to firstly pass through a moisturizing curing stage; b. after the polar plate passes through the moisturizing and curing stage, entering an oxidation and curing stage; c. after the polar plate is oxidized and solidified, the polar plate enters a drying and solidifying stage; d. and after drying, carrying out three free drop tests of 1m on the green plate to ensure that the paste dropping of the green plate is not more than 3 lattices, and then discharging the green plate out of the furnace.
Preferably, the moisture curing stage in the step a sequentially passes through a first stage and a second stage, the temperature of the first stage is set to be 40 ℃, the humidity is 99%, the curing time is set to be 10h, the temperature of the second stage is set to be 45 ℃, the humidity is 99%, and the curing time is set to be 14 h.
Preferably, the oxidation curing stage in the step b sequentially passes through 3 stages, the temperature of the first stage is set to be 45 ℃, the humidity is 99-95%, the curing time is 8h, the temperature of the second stage is set to be 55 ℃, the humidity is 95-85%, the curing time is 8h, the temperature of the third stage is set to be 65 ℃, the humidity is 85-75%, and the curing time is 12 h.
Preferably, the drying and curing stage in the step c sequentially passes through 3 stages, the temperature of the first stage is set to be 45 ℃, the humidity is 75-55%, the curing time is 4h, the temperature of the second stage is set to be 65 ℃, the humidity is 0%, the curing time is 4h, the temperature of the third stage is set to be 75-115 ℃, the humidity is 0%, and the curing time is 16 h.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention is beneficial to the parameter value of the lead powder to reach a certain standard by controlling the production process of the lead powder, thereby being beneficial to the subsequent work, reducing the production cost and improving the working efficiency.
(2) According to the invention, the content of free metal lead can be controlled by optimizing the existing pole plate curing process, so that the combination of the grid and the active substance is firmer, the interface resistance is reduced, and the charging efficiency is improved.
(3) The invention is beneficial to maintaining the water content in the lead plaster on the polar plate in a dynamic balance through the moisturizing curing stage, the oxidizing curing stage and the drying curing stage, thereby being beneficial to ensuring the capacity of the storage battery and prolonging the service life of the storage battery.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1, the present invention provides a technical solution: an environment-friendly process for preparing a high-energy storage battery plate by using secondary lead comprises the following steps of (1) manufacturing lead powder, namely melting pure lead, casting the lead powder into lead powder with a certain specification by using a lead powder machine, and winnowing to ensure that the parameter value of the lead powder reaches a certain standard; (2) casting a grid, namely casting a lead-antimony alloy, a lead-calcium alloy or other alloys into different types of grids with composite requirements in a gravity casting mode; (3) manufacturing a polar plate, mixing lead powder, dilute sulfuric acid and an additive, smearing lead paste prepared after mixing on the surface of a grid by using a smearing machine, and then drying and curing to obtain a green polar plate; (4) and (3) forming a polar plate, carrying out redox reaction on the polar plate and dilute sulfuric acid under the action of direct current to generate lead oxide, and finally cleaning and drying to obtain the storage battery polar plate.
The specific steps of melting the pure lead in the step 1 are as follows:
a. firstly, when lead is dissolved, pure lead is slowly fed into a lead melting furnace, and electric lead is melted by flame;
b. after the lead liquid covers half of the height of the electric heating tube in the furnace, starting electric heating, and setting a certain heating temperature;
c. and (c) after the lead is melted and reaches the set temperature, heating the lead conveying pipe by using a cutting flame, starting a lead pump, and when a lead strip does not need to be cast, enabling the lead liquid to flow back into the furnace, wherein the temperature in the step b is set to be 390-410 ℃, and the height of the lead liquid level is kept about 10cm away from a lead melting furnace mouth.
In the step 1, the content of elemental metal in the lead powder is 20-30%, the average particle size of particles with the particle diameter larger than 45 micrometers in the lead powder is less than 1%, the surfaces of lead powder particles are PbO and Pb3O4, and the oxidation degree of the lead powder is 73-80%.
The concrete steps of pole plate curing in step 3 are as follows: a. firstly, placing a polar plate in a curing chamber, and enabling the polar plate to firstly pass through a moisturizing curing stage; b. after the polar plate passes through the moisturizing and curing stage, entering an oxidation and curing stage; c. after the polar plate is oxidized and solidified, the polar plate enters a drying and solidifying stage; d. and after drying, carrying out three free drop tests of 1m on the green plate to ensure that the paste dropping of the green plate is not more than 3 lattices, and then discharging the green plate out of the furnace.
Wherein the moisture curing stage in the step a successively passes through a first stage and a second stage, wherein the temperature of the first stage is set to 40 ℃, the humidity is 99%, the curing time is 10h, the temperature of the second stage is set to 45 ℃, the humidity is 99%, and the curing time is 14h, the oxidation curing stage in the step b successively passes through 3 stages, the temperature of the first stage is set to 45 ℃, the humidity is 99% -95%, the curing time is 8h, the temperature of the second stage is 55 ℃, the humidity is 95% -85%, the curing time is 8h, the temperature of the third stage is 65 ℃, the humidity is 85% -75%, and the curing time is 10h, the drying curing stage in the step c successively passes through 3 stages, the temperature of the first stage is set to 45 ℃, the humidity is 75% -55%, the curing time is 4h, and the temperature of the second stage is 65 ℃, the humidity is 0%, the curing time is 4h, the temperature of the third stage is set to be 75-115 ℃, the humidity is 0%, and the curing time is 16 h.
The lead powder control parameters of the lead powder are provided with oxidation degree, apparent density, water absorption and acid absorption value, wherein the calculation formula of the oxidation degree is PbO (%) ═ V multiplied by T/M multiplied by 100%, V is the volume of EDTA standard solution consumed, and the unit is ml; t is the titer of EDTA standard solution to lead oxide, and the unit is g/ml; m is the sample amount and is in g, wherein the water absorption of the lead powder is 11-14%.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. An environment-friendly process for preparing a high-energy storage battery plate by using secondary lead comprises the following steps: (1) the lead powder is manufactured, pure lead is melted firstly, then the lead powder with certain specification is cast by a lead powder machine, and the parameter value of the lead powder reaches certain standard through air separation; (2) casting a grid, namely casting a lead-antimony alloy, a lead-calcium alloy or other alloys into different types of grids with composite requirements in a gravity casting mode; (3) manufacturing a polar plate, mixing lead powder, dilute sulfuric acid and an additive, smearing lead paste prepared after mixing on the surface of a grid by using a smearing machine, and then drying and curing to obtain a green polar plate; (4) and (3) forming a polar plate, carrying out redox reaction on the polar plate and dilute sulfuric acid under the action of direct current to generate lead oxide, and finally cleaning and drying to obtain the storage battery polar plate.
2. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 1, wherein the process comprises the following steps: the specific steps of melting the pure lead in the step 1 are as follows:
a. firstly, when lead is dissolved, pure lead is slowly fed into a lead melting furnace, and electric lead is melted by flame;
b. after the lead liquid covers half of the height of the electric heating tube in the furnace, starting electric heating, and setting a certain heating temperature;
c. after the lead is melted and reaches the set temperature, the lead conveying pipe is heated by cutting flame, then the lead pump is started, and when the lead strip does not need to be cast, the lead liquid flows back into the furnace.
3. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 2, wherein the process comprises the following steps: and in the step b, the temperature is set to be 390-410 ℃, and the height of the lead liquid level is kept to be about 10cm away from the lead melting furnace mouth.
4. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 1, wherein the process comprises the following steps: in the step 1, the content of elemental metal in the lead powder is 20-30%, the average particle size of particles with the particle size of more than 45 micrometers in the lead powder is less than 1%, the surfaces of lead powder particles are PbO and Pb3O4, and the oxidation degree of the lead powder is 73-80%.
5. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 1, wherein the process comprises the following steps: the specific steps of curing the polar plate in the step 3 are as follows:
a. firstly, placing a polar plate in a curing chamber, and enabling the polar plate to firstly pass through a moisturizing curing stage;
b. after the polar plate passes through the moisturizing and curing stage, the oxidation and curing stage is carried out;
c. after the polar plate is oxidized and solidified, the polar plate enters a drying and solidifying stage;
d. and after drying, carrying out three free drop tests of 1m on the green plate to ensure that the paste dropping of the green plate is not more than 3 lattices, and then discharging the green plate out of the furnace.
6. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 5, wherein the process comprises the following steps: the moisture curing stage in the step a sequentially passes through a first stage and a second stage, the temperature of the first stage is set to be 40 ℃, the humidity is 99%, the curing time is set to be 10h, the temperature of the second stage is set to be 45 ℃, the humidity is 99%, and the curing time is set to be 14 h.
7. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 5, wherein the process comprises the following steps: the oxidation curing stage in the step b sequentially passes through 3 stages, the temperature of the first stage is set to be 45 ℃, the humidity is 99-95%, the curing time is 8h, the temperature of the second stage is set to be 55 ℃, the humidity is 95-85%, the curing time is 8h, the temperature of the third stage is set to be 65 ℃, the humidity is 85-75%, and the curing time is 10 h.
8. The environment-friendly process for preparing the high-energy-storage battery plate by using the secondary lead as claimed in claim 5, wherein the process comprises the following steps: and c, sequentially passing through 3 stages in the drying and curing stage in the step c, wherein the temperature of the first stage is set to be 45 ℃, the humidity is 75-55%, the curing time is 4h, the temperature of the second stage is set to be 65 ℃, the humidity is 0%, the curing time is 4h, the temperature of the third stage is set to be 75-115 ℃, the humidity is 0%, and the curing time is 16 h.
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| CN202210092571.7A CN114430025A (en) | 2022-01-26 | 2022-01-26 | Environment-friendly process for preparing high-energy-storage battery plate by using secondary lead |
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| CN202210092571.7A CN114430025A (en) | 2022-01-26 | 2022-01-26 | Environment-friendly process for preparing high-energy-storage battery plate by using secondary lead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889786A (en) * | 2022-09-23 | 2023-04-04 | 湖州德旭科技有限公司 | Preparation process of lead powder for long-life lead-acid storage battery |
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2022
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| CN102610800A (en) * | 2012-03-30 | 2012-07-25 | 山东瑞宇蓄电池有限公司 | Method for solidifying lead-acid battery plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889786A (en) * | 2022-09-23 | 2023-04-04 | 湖州德旭科技有限公司 | Preparation process of lead powder for long-life lead-acid storage battery |
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