Zinc recovery process.
Abstract
A process for the recovery of zinc metal from a zinc mineral includes the steps of leaching the zinc mineral in a solution including a halide species formed from two or more different halides, to leach the zinc into the solution. The zinc-bearing solution is then electrolysed to yield zinc metal and to generate the halide species. The electrolysed solution including the halide species is then returned to the leaching step. A portion of the electrolysed solution can be removed as a bleed stream from a cathode compartment of an electrolytic cell of the electrolysis process and processed to remove manganese as manganese dioxide precipitate by adding thereto limestone, and the halide species from an anode compartment of the electrolysis process. In this regard, the pH and Eh of the solution can be regulated in a manner that favours the formation of the manganese dioxide precipitate over the formation of a precipitate of zinc.
Term
No projected expiry on record.
- Priority
- Filed
- Granted
- Today
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| WO0061826A1 | Cites | World Intellectual Property Organization (WIPO) | Search report |
| US4071421A | Cites | United States of America | Search report |
| WO9400606A1 | Cites | World Intellectual Property Organization (WIPO) | Search report |
28 members in 18 offices
Priority claims16
| Document | Office | Kind | Date |
|---|---|---|---|
| PR766701 | Australia | A | |
| PR766701 | Australia | A | |
| PR766901 | Australia | A | |
| PR766901 | Australia | A | |
| PR767001 | Australia | A | |
| PR767001 | Australia | A | |
| 0201260 | Australia | W | |
| 0201260 | Australia | W | |
| AU2001PR07667 | – | – | – |
| AU2001PR07669 | – | – | – |
| AU2001PR07670 | – | – | – |
| PCTAU0201260 | – | – | – |
| PR7667 | – | – | – |
| PR7669 | – | – | – |
| PR7670 | – | – | – |
| WO2002AU01260 | – | – | – |
Members28
| Document | Office | Kind | |
|---|---|---|---|
| CA2459899A1 | Canada | A1 | |
| WO03023077A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AP2004003004A0 | African Regional Intellectual Property Organization (ARIPO) | A0 | |
| KR20040040460A | Republic of Korea | A | |
| NO20041446L | Norway | L | |
| EP1434893A1 | European Patent Office (EPO) | A1 | |
| BR0212518A | Brazil | A | |
| ZA200402131B | South Africa | B | |
| MXPA04002380A | Mexico | A | |
| US2004237720A1 | United States of America | A1 | |
| EP1434893A4 | European Patent Office (EPO) | A4 | |
| JP2005501973A | Japan | A | |
| CN1571852A | China | A | |
| PL369574A1 | Poland | A1 | |
| RU2004111286A | Russian Federation | A | |
| RU2298585C2 | Russian Federation | C2 | |
| AP1757AThis record | African Regional Intellectual Property Organization (ARIPO) | A | |
| RU2298585C9 | Russian Federation | C9 | |
| CN1332046C | China | C | |
| EP1434893B1 | European Patent Office (EPO) | B1 | |
| AT386825T | Austria | T | |
| ATE386825T1 | Austria | T1 | |
| DE60225161D1 | Germany | D1 | |
| ES2300469T3 | Spain | T3 | |
| AU2002328671B2 | Australia | B2 | |
| US7465334B2 | United States of America | B2 | |
| PL201418B1 | Poland | B1 | |
| CA2459899C | Canada | C |
Numbers
- Publication
- AP 1757
- Publication, DOCDB
- 1757
- Publication, EPODOC
- AP1757
- Application
- 2004003004
- Application, DOCDB
- 2004003004
- Application, EPODOC
- AP20040003004
Titles
- English
- Zinc recovery process.
Classification
- CPC, 6
- C22B19/26
- C22B3/04
- C22B3/10
- C22B19/22
- C25C1/16
- Y02P10/20
- IPC, 13
- C22B3 04
- C22B19 00
- C22B1 16
- C22B3 06
- C22B3 10
- C22B3 12
- C22B3 20
- C22B3 44
- C22B3 46
- C22B15 00
- C22B19 20
- C25C1 06
- C25C1 16