Title:
閃亜鉛鉱を含む鉱石または精鉱から亜鉛を回収する方法
Document Type and Number:
Japanese Patent JP3899428
Kind Code:
B2
Abstract:
PCT No. PCT/EP97/01115 Sec. 371 Date May 13, 1999 Sec. 102(e) Date May 13, 1999 PCT Filed Mar. 6, 1997 PCT Pub. No. WO97/33007 PCT Pub. Date Sep. 12, 1997A process for recovery of zinc from sphalerite containing ores or concentrates, whereby, in a first step, these ores or concentrates are submitted to a thermal treatment consisting essentially of a heating cycle performed under non-oxidizing conditions above 900 DEG C. thereby at least partly transforming the sphalerite to wurtzite, and subsequently the wurtzite is quenched in such conditions as to retain at least partly the wurtzite after quenching. In a second step zinc is leached out of the converted ore or concentrate, and in a third step zinc is recovered from the leaching solution by electrolysis.
Inventors:
Blower, Siebold
Dirk, van Hütte
Dirk, van Hütte
Application Number:
JP53146797A
Publication Date:
March 28, 2007
Filing Date:
March 06, 1997
Export Citation:
Assignee:
Nve Umicore Society Anonym
International Classes:
C22B3/04; C22B1/02; C22B19/20; C22B3/06; C22B19/00; C22B19/02; C25C1/16
Domestic Patent References:
| JP5061305A | ||||
| JP5171310A |
Foreign References:
| WO1990013679A1 | ||||
| EP0195650A1 |
Attorney, Agent or Firm:
Calyx
Toshio Nakamura
Toshio Nakamura