Title:
BENEFICIATION METHOD FOR STEPWISE CLASSIFICATION AND COMPREHENSIVE RECOVERY OF VALUABLE ELEMENTS IN PRIMARY VEIN PLATINUM MINE TAILINGS
Document Type and Number:
WIPO Patent Application WO/2021/212595
Kind Code:
A1
Abstract:
A beneficiation method for stepwise classification and comprehensive recovery of valuable elements in primary vein platinum mine tailings, comprising the steps of spiral fast harvesting, strong magnetic shunt, chromite flotation, ore grinding and preparing slurry, and platinum palladium flotation. Coarse-grained high-quality chromite is preferentially obtained by means of screw reselection, so as to achieve early collection and fast harvesting. Magnetic separation realizes the separation of weak magnetic minerals and platinum and palladium minerals to facilitate subsequent separation. The weakly magnetic minerals are used for recovering chromite, thereby further improving the utilization rate of tailings resources. The minerals loaded with platinum and palladium are fully dissociated by means of fine grinding, and platinum and palladium minerals are effectively recovered by means of flotation. The platinum palladium concentrate finally obtained has a platinum+palladium grade greater than 60g/t, an enrichment ratio greater than 60, and a content of impurity Cr2O3 less than 3%. The chromite Cr2O3 grade is greater than 41%, and the recovery rate is greater than 70%. The present method has a simple process flow, a high technical index, is easy to be industrialized, and realizes the comprehensive recovery of valuable elements in primary vein platinum mine tailings.
Inventors:
LI QIANG (CN)
HU ZHEN (CN)
QIU XIANYANG (CN)
LI HANWEN (CN)
YAO YANQING (CN)
WANG CHENGHANG (CN)
WANG TAI (CN)
ZOU JIANJIAN (CN)
LI PEILUN (CN)
YANG KAIZHI (CN)
QIU SHICHENG (CN)
SHI HAN (CN)
HU ZHEN (CN)
QIU XIANYANG (CN)
LI HANWEN (CN)
YAO YANQING (CN)
WANG CHENGHANG (CN)
WANG TAI (CN)
ZOU JIANJIAN (CN)
LI PEILUN (CN)
YANG KAIZHI (CN)
QIU SHICHENG (CN)
SHI HAN (CN)
Application Number:
PCT/CN2020/092230
Publication Date:
October 28, 2021
Filing Date:
May 26, 2020
Export Citation:
Assignee:
INST OF RESOURCES COMPREHENSIVE UTILIZATION GUANGDONG ACADEMY OF SCIENCES (CN)
International Classes:
B03B9/00; B03B1/00
Foreign References:
| CN105032621A | 2015-11-11 | |||
| CN102341512A | 2012-02-01 | |||
| CN103212483A | 2013-07-24 | |||
| US20180369869A1 | 2018-12-27 | |||
| US4685963A | 1987-08-11 |
Other References:
JINAG, HELIN ET AL.: "Treatment of Platinum-Bearing Ore", PRECIOUS METALS, vol. 9, no. 02, 30 June 1988 (1988-06-30), pages 46 - 53, XP055860722
U.ATALAY ET AL.: "Separation of chromite tailings by wet-type strong magnetic separation", METALLIC ORE DRESSING ABROAD, vol. 46, no. 3, 31 March 1989 (1989-03-31), pages 19 - 21,18, XP055860727
U.ATALAY ET AL.: "Separation of chromite tailings by wet-type strong magnetic separation", METALLIC ORE DRESSING ABROAD, vol. 46, no. 3, 31 March 1989 (1989-03-31), pages 19 - 21,18, XP055860727
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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