A smelting furnace for smelting a nickel matte and a production method for a low nickel matte. The smelting furnace comprises: a first region (1) for melting and slagging an object to be smelted;a second region (2) fo...
标准号:
WO2023/077641(A1)
A smelting furnace for smelting a nickel matte and a production method for a low nickel matte. The smelting furnace comprises: a first region (1) for melting and slagging an object to be smelted;a second region (2) for carrying out reduction and sulfidation on the object subjected to melting and slagging in the first region (1), so as to generate a target product;and a third region (3) for separating the target product, wherein the first region (1), the second region (2) and the third region (3) are communicated with each other, and a partition wall (7) is provided between the first region (1) and the second region (2) to separate the first region (1) and the second region (2);the smelting furnace comprises a first furnace body (20) and a second furnace body (30) which are independent of each other;the first furnace body (20) and the second furnace body (30) are arranged corresponding to the first region (1) and the second region (2);uptake flues for jointly discharging smoke are provided above the first region (1) and the second region (2).
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 h...
标准号:
WO2022/252374(A1)
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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