Title:
METHOD FOR RECOVERING SILICON AND IRON FROM IRON TAILINGS
Document Type and Number:
WIPO Patent Application WO/2023/092331
Kind Code:
A1
Abstract:
Provided is a method for recovering silicon and iron from iron tailings. The component of the iron tailings comprises silicon and iron. The recovering method comprises the steps of: subjecting iron tailings to pre-classification, primary grinding, primary classification, secondary grinding and classification, tertiary grinding and classification, primary weak magnetic separation, primary strong magnetic separation, secondary weak magnetic separation, secondary strong magnetic separation, tertiary weak magnetic separation, tertiary strong magnetic separation, quaternary strong magnetic separation, a roughing spiral chute, a concentrating spiral chute, a scavenging spiral chute, coarse-grain flotation, a coarse-grain leaching device, iron extraction flotation, fine-grain flotation and a fine-grain leaching device to obtain a flotation concentrate, a high-purity silica micropowder product and a coarse-grain silica product. In the present invention, high value-added recycling of iron tailings can be achieved, a coarse-grain silica product, an iron ore concentrate and a high-purity silica micropowder product can be recycled according to market demands, which fully realizes efficient development and utilization of resources and has important practical and strategic significance.
Inventors:
YANG XIAOFENG (CN)
LIU WENSHENG (CN)
XU LIANSHENG (CN)
YAO QIANG (CN)
CHEN YU (CN)
CAO ZHE (CN)
LIU SHUANGAN (CN)
CHAI QINGPING (CN)
ZHI HUI (CN)
LIU JIANJUN (CN)
FU YAFENG (CN)
DONG ZHENHAI (CN)
MAN XIAOFEI (CN)
LIU WENSHENG (CN)
XU LIANSHENG (CN)
YAO QIANG (CN)
CHEN YU (CN)
CAO ZHE (CN)
LIU SHUANGAN (CN)
CHAI QINGPING (CN)
ZHI HUI (CN)
LIU JIANJUN (CN)
FU YAFENG (CN)
DONG ZHENHAI (CN)
MAN XIAOFEI (CN)
Application Number:
PCT/CN2021/132786
Publication Date:
June 01, 2023
Filing Date:
November 24, 2021
Export Citation:
Assignee:
ANSTEEL GROUP MINING CORPORATION LTD (CN)
International Classes:
B03D1/00; B03B7/00; C01B33/18; C22B1/00
Foreign References:
| CN102259053A | 2011-11-30 | |||
| CN101716551A | 2010-06-02 | |||
| CN108636591A | 2018-10-12 | |||
| CN102259059A | 2011-11-30 | |||
| US20200157696A1 | 2020-05-21 | |||
| CN101428248A | 2009-05-13 |
Attorney, Agent or Firm:
DALIAN EAST PATENT AGENT LTD. (CN)
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