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[Chemical Knowledge]：Production and manufacturing method and process flow of potassium alum

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Potassium alum, also known as potassium aluminum sulfate, is an important inorganic salt chemical, widely used in papermaking, pharmaceutical, water purification, ceramics and other fields. The following is a method of manufacturing potassium alum:

1. raw materials to prepare

1. Sulfuric acid: industrial grade sulfuric acid with a concentration of about 98%.
2. Aluminum hydroxide: aluminum hydroxide powder with high purity.
3. Potassium carbonate: industrial grade potassium carbonate.

2. Manufacturing Steps

1. Dissolving aluminum hydroxide: Aluminum hydroxide powder was added to deionized water, stirred and heated until completely dissolved to prepare an aluminum hydroxide solution.
2. Acidolysis: Sulfuric acid is slowly added to the aluminum hydroxide solution while stirring and controlling the reaction temperature to react aluminum hydroxide with sulfuric acid to produce aluminum sulfate.
3. adding potassium carbonate: potassium carbonate is added to the reaction solution, and aluminum sulfate reacts with potassium carbonate to generate aluminum potassium sulfate and carbon dioxide.
4. Filtration and washing: Impurities in the reaction solution were removed by filtration equipment, and then the filter cake was washed several times to ensure the purity of the product.
5. Drying and Packaging: The washed filter cake is dried and then packaged to give the final potassium alum product.
Precautions for
3.

1. During the entire production process, it is necessary to strictly control the reaction temperature and pH value to ensure the smooth progress of the reaction and the quality of the product.
2. Strict quality control of raw materials is required to ensure that the purity and quality of raw materials meet production requirements.
3. In the process of filtration and washing, it is necessary to select appropriate filtration equipment and washing methods to ensure the purity and yield of the product.

above is a manufacturing method of potassium alum, and the specific production process and equipment may vary from manufacturer to manufacturer and process conditions. In the actual production process, it needs to be optimized and adjusted according to the specific situation.

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