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Preparation method of micron-sized nickel protoxide

A nickel oxide, micron-scale technology, applied in the direction of nickel oxide/nickel hydroxide, etc., can solve the health threats of on-site personnel, equipment corrosion, environmental pollution and other problems, and achieve environmental friendliness, process controllable and simple process Effect

Pending Publication Date: 2021-11-12
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solution atomization roasting method is used to prepare nickelous oxide, which flows the prepared nickel chloride solution into the liquid inlet of the spray nozzle, and the compressed carrier gas enters the air inlet of the spray nozzle, and the nickel chloride solution and compressed air are fully mixed in the nozzle. Mixing, the nickel chloride solution is atomized by high-pressure gas into uniform fine droplets and sprayed into a special reactor for continuous atomization and roasting to obtain the target product nickelous oxide; After water is absorbed, hydrochloric acid is formed, and the hydrochloric acid is stored in the hydrochloric acid storage tank, and the volatilization of the tail gas of the hydrochloric acid in the hydrochloric acid storage tank not only pollutes the surrounding environment, but also seriously corrodes the equipment on site, and also affects the health of the personnel on site. threaten

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1, a preparation method of micron-sized nickelous oxide, the method steps include: Step 1: Weigh a certain amount of carbonyl nickel powder and put it into a box-type protective atmosphere resistance furnace; Step 2: Turn on the power of the air compressor , set the compressed gas flow rate to 10-50L / min, and then pass the compressed gas into the box-type protective atmosphere resistance furnace; Step 3: Turn on the power supply of the box-type protective atmosphere resistance furnace, set the roasting temperature to 700-1000°C, and the heating rate The temperature is 10-30°C / min, and the roasting holding time is 2-6h; Step 4: After the roasting is completed, the furnace temperature of the box-type protective atmosphere resistance furnace is naturally cooled to below 100°C, and the furnace door is opened to take out the corundum sagger, and the prepared Nickel oxide; step 5: place the nickel oxide prepared in step 4 in a ball mill tank, use zirconia grinding b...

Embodiment 2

[0010] Embodiment 2, a method for preparing micron-sized nickelous oxide, the method steps include: weighing a certain amount of carbonyl nickel powder and putting it into a box-type protective atmosphere resistance furnace. Turn on the power of the air compressor, set the flow rate of compressed air to 30L / min, and then pass the compressed air into the box-type protective atmosphere resistance; turn on the power of the box-type protective atmosphere resistance furnace, set the roasting temperature to 800°C, and the heating rate to 20°C / min, the roasting holding time is 4h. After the calcination, the furnace temperature of the box-type protective atmosphere resistance furnace is naturally cooled to below 100°C, and the furnace door is opened to take out the corundum sagger to prepare nickelous oxide; the nickelous oxide is placed in a ball mill jar, and zirconia grinding balls are used Cover the bottom of the ball mill tank, the ball mill time is 2h, the frequency of the ball ...

Embodiment 3

[0011] Embodiment 3, a method for preparing micron-sized nickelous oxide, the method steps include: weighing a certain amount of carbonyl nickel powder and putting it into a box-type protective atmosphere resistance furnace. Turn on the power of the air compressor, set the flow rate of compressed oxygen to 10L / min, and then pass the compressed oxygen into the box-type protective atmosphere resistance; turn on the power of the box-type protective atmosphere resistance furnace, set the roasting temperature to 700°C, and the heating rate to be 10°C / min, and the roasting holding time is 2h. After the calcination, the furnace temperature of the box-type protective atmosphere resistance furnace is naturally cooled to below 100°C, and the furnace door is opened to take out the corundum sagger to prepare nickelous oxide; the nickelous oxide is placed in a ball mill jar, and zirconia grinding balls are used Cover the bottom of the ball milling tank, the ball milling time is 1h, the fre...

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Abstract

The invention discloses a preparation method of micron-sized nickel protoxide. The preparation method comprises the following steps: weighing a certain amount of nickel powder and putting the nickel powder into a box-type protective atmosphere resistance furnace; introducing compressed gas into a box-type protective atmosphere resistance furnace, and preparing nickel protoxide by adopting a roasting method; crushing nickel protoxide into particles with the particle size of 0.3-50 [mu] m through a ball milling method. According to the method, the nickel carbonyl powder is used as the raw material, the nickel protoxide is prepared through the roasting method, the method for crushing the nickel protoxide into the micron particles through the ball milling method has the advantages of being simple in technology, controllable in process, environmentally friendly, free of greenhouse gas emission and the like, and the method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of inorganic functional materials, and in particular relates to a preparation method of micron-sized nickel oxide. Background technique [0002] Nickel oxide (NiO) is an important inorganic functional material widely used in catalysts, battery cathodes, gas sensors, electrochromic films, magnetic materials and other fields, and it is also a raw material for the manufacture of nickel salts and nickel catalysts. The solution atomization roasting method is used to prepare nickelous oxide, which flows the prepared nickel chloride solution into the liquid inlet of the spray nozzle, and the compressed carrier gas enters the air inlet of the spray nozzle, and the nickel chloride solution and compressed air are fully mixed in the nozzle. Mixing, the nickel chloride solution is atomized by high-pressure gas into uniform fine droplets and sprayed into a special reactor for continuous atomization and roasting to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04
CPCC01G53/04C01P2004/61C01P2004/62
Inventor 衣淑立陈大林刘世和丁勇刘爱春李芬霞陈兴纲马婷
Owner JINCHUAN GROUP LIMITED