Application Type
Patents
Application SubType
PCT
(10) Registration Number and Date
Status
Filed-Formality Examination
(180) Expiration Date
(20) Filing Number and Date
PG P/2023/000049 2021.07.28
(40) Publication Number and Date
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
CN 202110604271.8
2021.05.31
(72) Inventor
(EN) Demao FENG : c/o CNGR Changsha Office, Yunda Central Plaza, B Block, 15th Floor Changsha Avenue 567, Yuhua District Changsha, Hunan 410000 (CN)
(EN) Guosheng RU : c/o CNGR Changsha Office, Yunda Central Plaza, B Block, 15th Floor Changsha Avenue 567, Yuhua District Changsha, Hunan 410000 (CN)
(EN) Sanshuang KUANG : c/o CNGR Changsha Office, Yunda Central Plaza, B Block, 15th Floor Changsha Avenue 567, Yuhua District Changsha, Hunan 410000 (CN)
(EN) Shuo YIN : c/o CNGR Changsha Office, Yunda Central Plaza, B Block, 15th Floor Changsha Avenue 567, Yuhua District Changsha, Hunan 410000 (CN)
(EN) Wu, TAO : c/o CNGR Changsha Office, Yunda Central Plaza, B Block, 15th Floor Changsha Avenue 567, Yuhua District Changsha, Hunan 410000 (CN)
(EN) Yanting LIU : c/o CNGR Changsha Office, Yunda Central Plaza, B Block, 15th Floor Changsha Avenue 567, Yuhua District Changsha, Hunan 410000 (CN)
(74) Representative Name
(EN) VAI IP LIMITED : PO BOX 27, KONEDOBU, NATIONAL CAPITAL DISTRICT
(54) Title
(EN) METHOD FOR PRODUCING LOW NICKEL MATTE BY SMELTING, REDUCTION AND SULFIDATION OF NICKEL OXIDE ORE
(57) Abstract
(EN)

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.

(58) Citations
Document Type Date Action
Event NameDateStatus
Filing2021.07.28Filed
PCT National Phase Entry2021.07.28PCT National Phase
Filing2024.01.16Filed