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[Chemical Knowledge]：Production and manufacturing method and process flow of basic zinc carbonate

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Manufacturing Method
of Basic Zinc Carbonate
Basic zinc carbonate is an important inorganic chemical product, which is widely used in rubber, plastics, ceramics, glass, medicine, pigments and other fields. There are many production methods of basic zinc carbonate, this paper mainly introduces the method of generating basic zinc carbonate by carbonation reaction with zinc sulfate as raw material.

1. raw materials and equipment

1 raw materials: zinc sulfate, sodium bicarbonate, activated carbon.
2. Equipment: reaction kettle, agitator, filter, dryer, packaging machine.

2. manufacturing steps

1 ingredients: according to a certain proportion of zinc sulfate, sodium bicarbonate added to the reaction kettle, while adding the right amount of activated carbon as a decolorant.
2. Stirring and reaction: start the stirrer, the raw materials are fully mixed in the reaction kettle, and the reaction temperature is controlled within a certain range, and the carbonation reaction is carried out to generate basic zinc carbonate.
3. Filtration and washing: After the end of the reaction, the product is separated from the mother liquor by means of a filter and washed neutral with clean water.
4. Drying: The washed product is placed in a desiccator and dried to constant weight at an appropriate temperature.
5. Packaging: The dried basic zinc carbonate is packaged as required.
Precautions for
3.

1. Strictly control the reaction temperature to avoid too high or too low temperature affecting product quality.
2. During the filtration and washing process, ensure that the product is fully washed to avoid residual mother liquor or impurities affecting product quality.
3. During the drying process, the drying temperature and time should be controlled to avoid overheating of the product or drying for too long to cause product performance degradation.

4. product quality and standard
The basic zinc carbonate produced by the
shall comply with relevant industry standards, such as the quality indicators specified in Industrial Basic Zinc Carbonate HG/T 2572-2012, such as appearance, purity, particle size, etc.

5. safety and environmental protection

1. In the production process, strictly abide by the safety operation procedures to ensure the safety of employees and equipment.
2. Strengthen the ventilation and dust prevention measures at the production site to reduce the dust concentration and reduce the impact on the environment and employee health.
3. Effectively treat the waste water, waste gas and other pollutants generated in the production process to ensure that the discharge meets the standards and protect the environment.

6. optimization and improvement

In order to further improve the production efficiency and product quality of basic zinc carbonate, the production process can be optimized and improved, such as:

1. Adopt more advanced mixing equipment and mixing technology to improve mixing uniformity and mass transfer efficiency.
2. Optimize the reaction temperature and time to improve the reaction rate and product purity.
3. Adopt more efficient filtration and drying equipment to improve production efficiency and product quality.
4. Strengthen the automation and intelligent control of the production process to improve production stability and efficiency.

In short, the production process of basic zinc carbonate needs to pay attention to the detailed management of raw material selection, equipment configuration, operation steps, quality control, etc., to ensure product quality and production safety. At the same time, continuous optimization and improvement of the production process can improve production efficiency and reduce production costs, and create greater economic and social benefits for enterprises.

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