Title:
METHOD FOR RECOVERING SODIUM, IRON AND TITANIUM FROM RED MUD AND DIRECTLY CEMENTING MOLTEN SLAG
Document Type and Number:
WIPO Patent Application WO/2020/206830
Kind Code:
A1
Abstract:
Disclosed is a method for recovering sodium, iron and titanium from red mud and directly cementing molten slag, comprising the following steps: (1) preparing red mud having high contents of iron and titanium as a raw material; (2) dehydrating and mixing the raw material with a solid-state carbonaceous reducing agent and a slagging agent to form a mixed material, and blowing the mixed material into the center of a vortex in a vortex-mixing high-temperature furnace and subjecting the mixed material to vortex-mixing reduction; (3) separating, from a titanium-containing molten slag, the molten iron formed after reduction, and casting the molten iron into a wear-resistant cast iron product; and (4) cooling the titanium-containing molten slag to allow titanium-containing components to enrich into a titanium-containing phase and separate from a residual slag, adjusting the composition of the residual slag, and crushing and grinding the same to prepare cement clinker, and recovering sodium by means of a flue gas dust collection system. The method can achieve extraction of sodium, iron and titanium from red mud all at the same time, with high extraction rates of sodium, iron and titanium.
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Inventors:
ZHANG TINGAN (CN)
LIU YAN (CN)
DOU ZHIHE (CN)
LV GUOZHI (CN)
ZHAO QIUYUE (CN)
FU DAXUE (CN)
ZHANG WEIGUANG (CN)
ZHANG ZIMU (CN)
LIU YAN (CN)
DOU ZHIHE (CN)
LV GUOZHI (CN)
ZHAO QIUYUE (CN)
FU DAXUE (CN)
ZHANG WEIGUANG (CN)
ZHANG ZIMU (CN)
Application Number:
PCT/CN2019/090838
Publication Date:
October 15, 2020
Filing Date:
June 12, 2019
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
C22B7/00; C22B1/00
Foreign References:
| CN102344982A | 2012-02-08 | |||
| CN106435080A | 2017-02-22 | |||
| CN107083485A | 2017-08-22 | |||
| US20190040494A1 | 2019-02-07 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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