BG49893A1 - Method for processing of paste by waste lead- acid battery - Google Patents
Method for processing of paste by waste lead- acid batteryInfo
- Publication number
- BG49893A1 BG49893A1 BG8956589A BG8956589A BG49893A1 BG 49893 A1 BG49893 A1 BG 49893A1 BG 8956589 A BG8956589 A BG 8956589A BG 8956589 A BG8956589 A BG 8956589A BG 49893 A1 BG49893 A1 BG 49893A1
- Authority
- BG
- Bulgaria
- Prior art keywords
- percent
- duration
- carried out
- current pulse
- desulphurisation
- Prior art date
Links
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
The method will be used for high-productivity lead extraction in hydrometallurgy. The method uses three processes: desulphurisation, leaching and electro winning. Desulphurisation is carried out in an inert or reducing gas medium at pressures of 2-6 MPa in two stages: at 30-35 and 55-75 degree C, respectively, each of the stages lasting 20-40 minutes, using a stoichiometric quantity of a saturated solution of sodium carbonate and adding, in equal portions, sodium hydrogen carbonate and sodium hydrogen sulphite at liquid/solid phase ratios between 4:1 and 8:1. Leaching is carried out using silicofluoric acid and phosphorous acid in the amount of 40 percent of the plumbous oxide in the desulphurised product. Electrowinning extraction is carried out finally with the electrolyte containing, in g/l: lead 30-80 and silicofluoric acid 8-120, using graphite anodes and a periodic reverse current with density of the normal current pulse 200-300 A/m<2> and duration 10-60 seconds, while the density and duration of the reversed current pulse are, respectively, 5-100 percent and 1-2 percent of the normal current pulse with a duration of the cathode cycle 48-96 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG8956589A BG49893A1 (en) | 1989-08-17 | 1989-08-17 | Method for processing of paste by waste lead- acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG8956589A BG49893A1 (en) | 1989-08-17 | 1989-08-17 | Method for processing of paste by waste lead- acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG49893A1 true BG49893A1 (en) | 1992-03-16 |
Family
ID=3922245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG8956589A BG49893A1 (en) | 1989-08-17 | 1989-08-17 | Method for processing of paste by waste lead- acid battery |
Country Status (1)
| Country | Link |
|---|---|
| BG (1) | BG49893A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009068988A3 (en) * | 2007-11-30 | 2009-11-12 | Engitec Technologies S.P.A. | Process for producing metallic lead starting from desulfurized pastel |
| CN109778230A (en) * | 2019-01-22 | 2019-05-21 | 河套学院 | A kind of method of high lead copper matte electrolytic separation lead and copper |
-
1989
- 1989-08-17 BG BG8956589A patent/BG49893A1/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009068988A3 (en) * | 2007-11-30 | 2009-11-12 | Engitec Technologies S.P.A. | Process for producing metallic lead starting from desulfurized pastel |
| CN101918600B (en) * | 2007-11-30 | 2013-03-13 | 恩吉泰克技术股份公司 | Process for producing metallic lead starting from desulfurized pastel |
| US8409421B2 (en) | 2007-11-30 | 2013-04-02 | Engitec Technologies S.P.A. | Process for producing metallic lead starting from desulfurized pastel |
| CN109778230A (en) * | 2019-01-22 | 2019-05-21 | 河套学院 | A kind of method of high lead copper matte electrolytic separation lead and copper |
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