Title:
BENEFICIATION METHOD FOR STEPPED RECOVERY AND SEGMENTED TAILING DISCARDING OF LOW-GRADE CHROMITE ORE
Document Type and Number:
WIPO Patent Application WO/2023/060890
Kind Code:
A1
Abstract:
A beneficiation method for stepped recovery and segmented tailing discarding of a low-grade chromite ore, specifically comprising a technological process of high-pressure roller grinding — coarse grain wet-type strong magnetic pre-concentration — ore grinding — wet-type strong magnetic tailing discarding — strong magnetic concentrate thickness grading — spiral chute refining — middling table re-concentration. A high-pressure roller mill is used as an ultrafine crushing device, which has the characteristics of a large crushing ratio, a low energy consumption, a high product fine fraction content, etc.; the tailing after the pre-concentration can be sold as a building material product due to a relatively large granularity; and a wet-type strong magnetic one-roughing and one-scavenging pre-concentration process is used, such that the treatment granularity is fine, the adaptability is high, the tailing discarding yield is high, and the metal loss ratio is low. When the method is used to process a low-grade chromite ore with a Cr2O3 grade of 19.44%, a chromium concentrate with a Cr2O3 grade of 43.87% and a Cr2O3 recovery rate of 67.28% can be obtained. The method has the advantages of a large system processing capacity, a large coarse grain tailing discarding yield, a high adaptability, being capable of saving on energy and environmentally friendly.
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Inventors:
CHEN ZHOU (CN)
YANG RENXIN (CN)
TIAN YI AN (CN)
YUAN QIDONG (CN)
WANG YAQIN (CN)
LIU JUN (CN)
WANG JU (CN)
ZHANG YONG (CN)
LI LIANG (CN)
LIN XIAOFENG (CN)
GE XINFENG (CN)
YANG RENXIN (CN)
TIAN YI AN (CN)
YUAN QIDONG (CN)
WANG YAQIN (CN)
LIU JUN (CN)
WANG JU (CN)
ZHANG YONG (CN)
LI LIANG (CN)
LIN XIAOFENG (CN)
GE XINFENG (CN)
Application Number:
PCT/CN2022/092443
Publication Date:
April 20, 2023
Filing Date:
May 12, 2022
Export Citation:
Assignee:
SINOSTEEL MAANSHAN GENERAL INSTITUTE OF MINING RES CO LTD (CN)
HUAWEI NATIONAL ENGINEERING RES CENTER OF HIGH EFFICIENT RECYCLE AND UTILIZATION FOR METALLIC MINERA (CN)
ENGINEERING INVESTIG & DESIGN INSTITUTE OF SINOSTEEL MIMR CO LTD (CN)
HUAWEI NATIONAL ENGINEERING RES CENTER OF HIGH EFFICIENT RECYCLE AND UTILIZATION FOR METALLIC MINERA (CN)
ENGINEERING INVESTIG & DESIGN INSTITUTE OF SINOSTEEL MIMR CO LTD (CN)
International Classes:
B03B9/00
Foreign References:
| CN113941433A | 2022-01-18 | |||
| CN113941441A | 2022-01-18 | |||
| CN104399578A | 2015-03-11 | |||
| CN101927236A | 2010-12-29 | |||
| CN104923386A | 2015-09-23 | |||
| CN103878111A | 2014-06-25 | |||
| IN202041033971A | ||||
| US20170326559A1 | 2017-11-16 |
Attorney, Agent or Firm:
MA'ANSHAN CITY JINQIAO PATENT AGENT LTD. (CN)
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