Method for producing nickel carbonyl powder from nickel hydroxide
A technology of nickel hydroxide and nickel carbonyl powder, which is applied in the field of powder metallurgy, can solve the problems of limited production cost of carbonyl nickel powder, low degree of automation, and high raw material cost, and achieve high roasting and synthesis efficiency, simple production process, and low roasting temperature Effect
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[0026] Example 1
[0027] Raw material composition of nickel hydroxide:
[0028] Ni
[0029] The raw material of nickel hydroxide is added into the rotating roaster at a speed of 1000kg per hour, the moisture of the raw material is 50%, the revolution of the reactor is set at 1 revolution / min, and the residence time of the material is 1.5 hours. During the reaction, hot gas and air are introduced. The reaction temperature is controlled at 450℃; the nickel oxide obtained by the reaction is transported to the hydrogen reduction furnace, the reaction temperature is 350℃, the reaction pressure is 0.06kpa, and the reduction is carried out in a hydrogen atmosphere to generate elemental active nickel; elemental active nickel is passed through a screw conveyor It is sent to the rotating nickel carbonyl synthesis reactor to undergo carbonylation reaction with CO gas. The reaction time is 18 hours, the reaction pressure is 0.005MPa, and the CO and the material are in countercurrent contac...
Example Embodiment
[0030] Example 2
[0031] Raw material composition of nickel hydroxide:
[0032] Ni
[0033] The raw material of nickel hydroxide is added into the rotating roaster at a speed of 1000kg per hour, the moisture content of the raw material is 60%, the speed of the reactor is set at 1.5 revolutions per minute, and the residence time of the material is 1 hour. During the reaction, hot gas and air are introduced. The reaction temperature is controlled at 450°C; the nickel oxide obtained by the reaction is transported to the hydrogen reduction furnace at a reaction temperature of 400°C, and the reaction pressure is 0.1kpa. The reduction is carried out in a hydrogen atmosphere to generate elemental active nickel; elemental active nickel is passed through a screw conveyor It is sent to the rotating nickel carbonyl synthesis reactor for the carbonylation reaction with CO gas. The reaction time is 30 hours, the reaction pressure is 0.005MPa, and the CO and the material are in countercurren...
Example Embodiment
[0034] Example 3
[0035] Raw material composition of nickel hydroxide:
[0036] Ni
[0037] The raw material of nickel hydroxide is added into the rotating roaster at a speed of 1000kg per hour, the moisture of the raw material is 50%, the revolution of the reactor is set to 1 revolution / min, and the residence time of the material is 1.5 hours. During the reaction, hot gas and air are introduced. The reaction temperature is controlled at 450°C; the nickel oxide obtained by the reaction is transported to the hydrogen reduction furnace, the reaction temperature is 400°C, the reaction pressure is 0.1kpa, and the reduction is carried out in a hydrogen atmosphere to generate elemental active nickel; elemental active nickel is passed through a screw conveyor It is sent to the rotating nickel carbonyl synthesis reactor to undergo carbonylation reaction with CO gas. The reaction time is 24 hours, the reaction pressure is 0.01MPa, and the CO and the material are in countercurrent contac...
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