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[Chemical Knowledge]：Manufacturing method and process flow of industrial basic zinc carbonate

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Industrial basic zinc carbonate manufacturing method

1. Introduction

basic zinc carbonate is an important inorganic chemicals, widely used in rubber, plastics, ceramics, glass, medicine, food and other fields. As an important chemical raw material, the production method of basic zinc carbonate has attracted much attention. This article will introduce a manufacturing method of industrial basic zinc carbonate.

2. materials and equipment

1. materials: zinc salt (such as zinc sulfate, zinc chloride, etc.), alkaline absorbent (such as sodium hydroxide, potassium hydroxide, etc.), carbonate (such as sodium carbonate, potassium carbonate, etc.).
2. Equipment: reaction kettle, agitator, filter, dryer, etc.

3. manufacturing method

1 ingredients: according to a certain proportion of zinc salt, alkaline absorbent and carbonate ingredients added to the reactor.
2. Stirring reaction: start the stirrer to fully mix the materials in the reactor, and react to generate basic zinc carbonate under appropriate temperature and pH conditions.
3. Filtration and washing: After the reaction is completed, the generated basic zinc carbonate is separated from the mother liquor through a filter, and then washed with clean water until it is neutral.
4. Drying: The washed basic zinc carbonate is placed in a desiccator and dried at an appropriate temperature to a constant weight.
5. Crushing and packaging: The dried basic zinc carbonate is crushed and then packaged as required.

4. precautions

1. Control the reaction temperature and pH value: The reaction temperature and pH value have an important influence on the formation and properties of basic zinc carbonate and need to be strictly controlled.
2. Washing to neutrality: In order to ensure product quality, basic zinc carbonate needs to be washed to neutrality to avoid the influence of residual alkaline or acidic substances on product properties.
3. Drying temperature and time: Drying temperature and time also have a certain influence on the properties of basic zinc carbonate, and need to be adjusted according to product requirements.

5. Conclusion

Through the above steps, we can produce industrial basic zinc carbonate that meets the requirements. This manufacturing method has the advantages of simple operation, high production efficiency and stable product quality, and can be widely used in the field of chemical production raw materials.

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