CN101892391A - Method for leaching anode-cathode mixed material of waste nickel-cadmium battery - Google Patents
Method for leaching anode-cathode mixed material of waste nickel-cadmium battery Download PDFInfo
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- CN101892391A CN101892391A CN2010102383611A CN201010238361A CN101892391A CN 101892391 A CN101892391 A CN 101892391A CN 2010102383611 A CN2010102383611 A CN 2010102383611A CN 201010238361 A CN201010238361 A CN 201010238361A CN 101892391 A CN101892391 A CN 101892391A
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- waste nickel
- leach liquor
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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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- 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
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Abstract
The invention discloses a method for leaching an anode-cathode mixed material of a waste nickel-cadmium battery, comprising the following steps: firstly, crushing the waste nickel-cadmium battery, carrying out magnetic separation and sieving; then preparing lixivium in a dissolving kettle, wherein the solute of the lixivium contains sulphuric acid and oxidizer, and the solvent is water; and throwing the sieved material into the lixivium, stirring and leaching, wherein the ratio of the lixivium volume to the sieved material mass is 1-6 :1 L/kg, and the leaching rates of nickel, cadmium and cobalt reach above 99.5%. The process of the invention has short recovering path, low equipment investment, high economic benefit and lower pollution level.
Description
Technical field
The present invention relates to a kind of leaching method of waste nickel-cadmium batteries anode and cathode mixed materials.
Background technology
The history of nickel-cadmium cell existing last 100 years since invention, because its internal resistance is very little, quickly-chargeable, can be load again big electric current is provided, and when discharge voltage change very little, be a kind of very ideal direct current supply battery, can be widely used in many aspects such as mobile communication, household electrical appliance and power tool.Yet abandoned nickel and cadmium cell can produce very big pollution to environment, and wherein topmost objectionable impurities is a cadmium, secondly is nickel and cobalt.Cadmium is easily by plant absorbing, and the cadmium of high density can cause growth and development of plants slow, if cadmium enters human body and through long-term accumulation, finally may injure the kidney organ and the bone of human body; The toxicity of nickel is only second to cadmium, but greater than lead, it can cause that also plant-growth is slow, and may bring out the human canceration.
Yet, the a large amount of NI-G cobalts that contained in the abandoned nickel and cadmium cell positive and negative pole material etc. are again a kind of good resources, therefore, it is great to reclaim these resource significances, recovery method mainly comprises pyrometallurgy and hydrometallurgy at present, pyrometallurgy mainly utilizes reductive agent at high temperature to reduce the compound of elements such as NI-G and obtains metal simple-substance, utilize the difference of each metal simple-substance boiling point to separate then, this kind method can obtain the simple substance cadmium, but often also can obtain iron-nickel alloy, and added value is low, facility investment simultaneously is very big, it is longer to reclaim the path, and the energy consumption height can produce secondary pollution to environment; Hydrometallurgy then is in acidity or basic solution or other solvents with the metal in the abandoned nickel and cadmium cell and compound dissolution thereof, utilize methods such as extraction, electrolysis to reclaim resource then, in the wet processing, leaching is an important step, present technology is to utilize the solution of chloride ion-containing and nitrate ion to leach basically, but these two kinds of solution volatilize hydrogenchloride and oxides of nitrogen gas easily in the process of redox reaction, thereby cause very big pollution.
In sum, present recovery technology most equipment investment is big, reclaims path length, and economic benefit is low, can cause more serious pollution simultaneously.
Summary of the invention
The leaching method that the purpose of this invention is to provide a kind of waste nickel-cadmium batteries anode and cathode mixed materials.
The technical scheme that the present invention takes is:
A kind of leaching method of waste nickel-cadmium batteries anode and cathode mixed materials comprises the steps:
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) prepare leach liquor in dissolution kettle, the solute of leach liquor contains sulfuric acid and oxygenant, and solvent is a water;
3) according to the leach liquor volume: the ratio of sieved material quality=1～6L:1kg drops into sieved material in leach liquor, stirs and leaches.
Leaching selected oxygenant is hydrogen peroxide or water-soluble persulphate, the vitriolic starting point concentration is 1～5mol/L in the dissolution kettle leach liquor, the initial mass per-cent of hydrogen peroxide is 5%～10%, the starting point concentration of water-soluble persulphate is 0.5～5mol/L, extraction time is 1～3 hour, and extraction temperature is 50 ~ 100 ℃.
The invention has the beneficial effects as follows: the leaching yield of nickel, cadmium and cobalt all reaches more than 99.5%, reclaims the path weak point, and facility investment is little, the economic benefit height, and pollution level is lower.
Embodiment
Be further described below in conjunction with embodiment.
Embodiment 1
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 1mol/L, and the initial mass per-cent of hydrogen peroxide is 10%;
3) in leach liquor, add the 500kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 100 ℃ and leached 1 hour.
The leaching yield of nickel is 99.7%, and the leaching yield of cadmium is 99.6%, and the leaching yield of cobalt is 100%.
Embodiment 2
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 3mol/L, and the initial mass per-cent of hydrogen peroxide is 5%;
3) in leach liquor, add the 3000kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 80 ℃ and leached 2 hours.
The leaching yield of nickel is 99.6%, and the leaching yield of cadmium is 99.8%, and the leaching yield of cobalt is 100%.
Embodiment 3
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 4mol/L, and the initial mass per-cent of hydrogen peroxide is 6%;
3) in leach liquor, add the 1000kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 75 ℃ and leached 2.5 hours.
The leaching yield of nickel is 99.8%, and the leaching yield of cadmium is 99.9%, and the leaching yield of cobalt is 100%.
Embodiment 4
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 5mol/L, and the initial mass per-cent of hydrogen peroxide is 7.5%;
3) in leach liquor, add the 2500kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 50 ℃ and leached 3 hours.
The leaching yield of nickel is 99.9%, and the leaching yield of cadmium is 99.9%, and the leaching yield of cobalt is 100%.
Embodiment 5
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is that the starting point concentration of 2.5mol/L Sodium Persulfate is 0.5mol/L;
3) in leach liquor, add the 2750kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 60 ℃ and leached 1.5 hours.
The leaching yield of nickel is 99.8%, and the leaching yield of cadmium is 99.7%, and the leaching yield of cobalt is 100%.
Embodiment 6
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 4.5mol/L, and the starting point concentration of Potassium Persulphate is 2mol/L;
3) in leach liquor, add the 1500kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 90 ℃ and leached 3 hours.
The leaching yield of nickel is 99.5%, and the leaching yield of cadmium is 99.9%, and the leaching yield of cobalt is 100%.
Embodiment 7
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 2.5mol/L, and the starting point concentration of Potassium Persulphate is 5mol/L;
3) in leach liquor, add the 2200kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 90 ℃ and leached 3 hours.
The leaching yield of nickel is 99.8%, and the leaching yield of cadmium is 99.6%, and the leaching yield of cobalt is 100%.
Embodiment 8
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 3mol/L, and the starting point concentration of Sodium Persulfate is 3.5mol/L;
3) in leach liquor, add the 1750kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 95 ℃ and leached 2.5 hours.
The leaching yield of nickel is 99.7%, and the leaching yield of cadmium is 99.7%, and the leaching yield of cobalt is 100%.
Embodiment 9
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) the preparation cumulative volume is the leach liquor of 3000L in dissolution kettle, and wherein the vitriolic starting point concentration is 4mol/L, and the starting point concentration of Sodium Persulfate is 1.5mol/L;
3) in leach liquor, add the 1500kg sieved material, start and stir and allow rotating speed reach 80r/min, be warming up to 85 ℃ and leached 1.5 hours.
The leaching yield of nickel is 99.6%, and the leaching yield of cadmium is 99.7%, and the leaching yield of cobalt is 100%.
Claims (7)
1. the leaching method of a waste nickel-cadmium batteries anode and cathode mixed materials comprises the steps:
1) the broken also magnetic separation of waste nickel-cadmium batteries is sieved;
2) prepare leach liquor in dissolution kettle, the solute of leach liquor contains sulfuric acid and oxygenant, and solvent is a water;
3) according to the leach liquor volume: the ratio of sieved material quality=1～6L:1kg drops into sieved material in leach liquor, stirs and leaches.
2. the leaching method of a kind of waste nickel-cadmium batteries anode and cathode mixed materials according to claim 1 is characterized in that: the vitriolic starting point concentration is 1～5mol/L in the dissolution kettle leach liquor.
3. the leaching method of a kind of waste nickel-cadmium batteries anode and cathode mixed materials according to claim 1 is characterized in that: oxygenant is hydrogen peroxide or water-soluble persulphate.
4. the leaching method of a kind of waste nickel-cadmium batteries anode and cathode mixed materials according to claim 3 is characterized in that: the initial mass per-cent of hydrogen peroxide is 5%～10% in the dissolution kettle leach liquor.
5. the leaching method of a kind of waste nickel-cadmium batteries anode and cathode mixed materials according to claim 3 is characterized in that: the starting point concentration of water-soluble persulphate is 0.5～5mol/L in the dissolution kettle leach liquor.
6. the leaching method of a kind of waste nickel-cadmium batteries anode and cathode mixed materials according to claim 1 is characterized in that: extraction time is 1～3 hour.
7. the leaching method of a kind of waste nickel-cadmium batteries anode and cathode mixed materials according to claim 1 is characterized in that: extraction temperature is 50 ~ 100 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102383611A CN101892391B (en) | 2010-07-28 | 2010-07-28 | Method for leaching anode-cathode mixed material of waste nickel-cadmium battery |
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| CN2010102383611A CN101892391B (en) | 2010-07-28 | 2010-07-28 | Method for leaching anode-cathode mixed material of waste nickel-cadmium battery |
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| CN101892391A true CN101892391A (en) | 2010-11-24 |
| CN101892391B CN101892391B (en) | 2012-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117467856A (en) * | 2023-11-01 | 2024-01-30 | 北京市弘洁蓝天科技股份有限公司 | Equipment for recovering heavy metal from nickel-cadmium battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383440A (en) * | 2007-11-16 | 2009-03-11 | 佛山市邦普镍钴技术有限公司 | Method for recycling and preparing superfine nickel powder from nickel-hydrogen cell |
| CN101624653A (en) * | 2009-06-23 | 2010-01-13 | 四川师范大学 | Method for leaching mixed cathode and anode materials from waste nickel-cadmium batteries |
| CN101624652A (en) * | 2009-06-23 | 2010-01-13 | 四川师范大学 | Method for leaching mixed cathode and anode materials from waste nickel-cadmium batteries |
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- 2010-07-28 CN CN2010102383611A patent/CN101892391B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383440A (en) * | 2007-11-16 | 2009-03-11 | 佛山市邦普镍钴技术有限公司 | Method for recycling and preparing superfine nickel powder from nickel-hydrogen cell |
| CN101624653A (en) * | 2009-06-23 | 2010-01-13 | 四川师范大学 | Method for leaching mixed cathode and anode materials from waste nickel-cadmium batteries |
| CN101624652A (en) * | 2009-06-23 | 2010-01-13 | 四川师范大学 | Method for leaching mixed cathode and anode materials from waste nickel-cadmium batteries |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117467856A (en) * | 2023-11-01 | 2024-01-30 | 北京市弘洁蓝天科技股份有限公司 | Equipment for recovering heavy metal from nickel-cadmium battery |
| CN117467856B (en) * | 2023-11-01 | 2024-04-09 | 北京市弘洁蓝天科技股份有限公司 | Equipment for recovering heavy metal from nickel-cadmium battery |
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| CN101892391B (en) | 2012-07-25 |
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