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[Chemical Knowledge]:Manufacturing method and process of nickel oxide

The manufacturing method
of nickel oxide
1. Introduction

Nickel oxide is an important raw material for the production of chemical products, widely used in ceramics, pigments, catalysts and other fields. This article will introduce the manufacturing method of nickel oxide, including raw material preparation, chemical reaction control, product post-treatment and so on.

2. Raw Material Preparation

The first step in the manufacture of nickel oxide is to prepare the raw materials. In general, the production of nickel oxide requires the use of a nickel salt and an alkaline absorbent. Nickel salt can choose nickel nitrate, nickel sulfate, etc., alkaline absorbent is commonly used sodium hydroxide, potassium hydroxide, etc. In order to ensure product quality, it is necessary to select raw materials with higher purity.

3. chemical reaction control

After preparing the raw materials, the next step is to control the chemical reaction process. The reaction principle of making nickel oxide is usually through the neutralization reaction of alkaline absorbent and nickel salt in aqueous solution to generate nickel hydroxide precipitate, and then through roasting to obtain nickel oxide. The pH value, reaction temperature and time and other factors need to be controlled during the reaction to ensure that the resulting nickel hydroxide precipitate has a high purity.

4. product post-treatment
After the nickel hydroxide precipitate is generated by the
reaction, post-treatment steps such as washing, filtering, and drying are required to obtain a relatively pure nickel hydroxide product. The washing process needs to be washed repeatedly with pure water to remove the impurity ions remaining on the surface of the product; the filtration is usually carried out by filter paper or filter cloth to ensure the uniform particle size of the product; the drying process needs to control the temperature and time to prevent the product from caking and deformation. The nickel hydroxide product obtained by post-treatment is

the nickel oxide
prepared
5. roasting, and further needs to be roasted to prepare nickel oxide. It is necessary to control the temperature and atmosphere during the roasting process, and it is usually necessary to roast at a high temperature to ensure that the nickel hydroxide is completely decomposed into nickel oxide. At the same time, it is also necessary to introduce an appropriate amount of air or oxygen to ensure the oxidation reaction during the roasting process.

6. precautions

In the manufacturing process of nickel oxide, the following points need to be paid attention to: First, the selection and storage of raw materials must ensure its purity and quality; secondly, the pH value and reaction temperature need to be strictly controlled during the reaction. Factors such as time to ensure the purity and particle size of the nickel hydroxide precipitate generated by the reaction; finally, the product post-treatment and roasting process also need to control appropriate conditions, to ensure that the final quality of nickel oxide products meet the requirements.

7. conclusion

nickel oxide is an important raw material for chemical production, and its manufacturing method needs to be controlled and processed by multiple links. Through reasonable selection and storage of raw materials, strict chemical reaction control, appropriate product post-treatment and roasting treatment, nickel oxide products with high purity and stable quality can be prepared, which provides strong support for applications in related fields.
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