Title:
硫化亜鉛精鉱から出発して硫黄媒体内の亜鉛を回収する湿式製錬法
Document Type and Number:
Japanese Patent JP2014510841
Kind Code:
A
Abstract:
The zinc concentrate is subjected to the following stages:
a. Roasting of at least part of the zinc concentrate.
b. Neutral leaching where zinc oxide is dissolved.
c. Acid leaching where zinc ferrites are leached.
d. Reduction of the Fe +++ contained in the solution to Fe ++ by means of the addition of zinc concentrate.
e. Neutralization of the acidity in the solution with calcine.
h. Oxidation of iron and precipitation of jarosite, free of contaminating solids, by means of the injection of oxygen or oxygen-enriched air and the addition of an alkali or an alkaline salt. Additionally, following the neutralization stage (e), it is possible to incorporate a stage (f) to re-leach the residue for the precipitation of arsenic and allied impurities, and a stage (g) of cementation of Cu, and following stage (c) a stage (i) of reduction of iron and direct leaching.
Inventors:
Francisco Jose Tamargo Garcia
Application Number:
JP2014504361A
Publication Date:
May 01, 2014
Filing Date:
April 15, 2011
Export Citation:
Assignee:
TAM 5,S.L.
International Classes:
C22B19/20; C22B1/06; C22B3/04; C22B3/44; C22B3/46; C22B19/34
Domestic Patent References:
| JP2006519309A | 2006-08-24 | |||
| JPH0790404A | 1995-04-04 | |||
| JPS58164737A | 1983-09-29 | |||
| JPS503918A | 1975-01-16 | |||
| JP2004515439A | 2004-05-27 | |||
| JP2002053310A | 2002-02-19 | |||
| JPS493370B1 | 1974-01-25 | |||
| JPH05171310A | 1993-07-09 |
Foreign References:
| US4128617A | 1978-12-05 |
Attorney, Agent or Firm:
Samejima Mutsumi
Kyousei Tamura
Keiichi
Yoshida Tamaki
New exemption victory
Kyousei Tamura
Keiichi
Yoshida Tamaki
New exemption victory