Title:
METHOD FOR PRODUCING LOW NICKEL MATTE BY SMELTING, REDUCTION AND SULFIDATION OF NICKEL OXIDE ORE
Document Type and Number:
WIPO Patent Application WO/2022/252374
Kind Code:
A1
Abstract:
The present disclosure discloses a method for producing low nickel matte by the smelting, reduction and sulfidation of nickel oxide ore. The method mainly comprises: drying and preheating nickel oxide ore to produce hot nickel oxide ore of a temperature of 600 to 900°C; continuously adding the dried and preheated nickel oxide ore and flux into a molten pool of a smelting furnace; spraying a reducing agent, a sulfidizing agent and oxygen-enriched air into a reaction zone of the molten pool in the smelting furnace, and controlling an oxygen excess coefficient α of the oxygen-enriched air to the reducing agent to be 0.3 to 0.4; and controlling the temperature in the furnace to be 1400 to 1550°C, so that the materials added in the furnace undergo a reduction and sulfidation reaction in a molten state to produce low nickel matte and slag. The described method is used for smelting nickel oxide ore, and has the characteristics of good environmental protection, a short process flow, strong adaptability of raw materials, low production costs, etc.
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Inventors:
TAO WU (CN)
LIU YANTING (CN)
YIN SHUO (CN)
FENG DEMAO (CN)
KUANG SANSHUANG (CN)
RU GUOSHENG (CN)
LIU YANTING (CN)
YIN SHUO (CN)
FENG DEMAO (CN)
KUANG SANSHUANG (CN)
RU GUOSHENG (CN)
Application Number:
PCT/CN2021/108943
Publication Date:
December 08, 2022
Filing Date:
July 28, 2021
Export Citation:
Assignee:
CNGR ADVANCED MAT CO LTD (CN)
CHANGSHA ZHUORUI METALLURGY ENVIRONMENT TECH DEVELOPMENT CO LTD (CN)
CHANGSHA ZHUORUI METALLURGY ENVIRONMENT TECH DEVELOPMENT CO LTD (CN)
International Classes:
C22B5/10; C22B5/08; C22B23/02
Foreign References:
| CN101457302A | 2009-06-17 | |||
| CN103937959A | 2014-07-23 | |||
| CN106609325A | 2017-05-03 | |||
| CN107217136A | 2017-09-29 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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