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[Chemical Knowledge]：Production and manufacturing method and process of sodium metasilicate

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Overview of the manufacturing method
of sodium metasilicate
1.

Sodium metasilicate is a common chemical raw material, widely used in washing, ceramics, building materials, metallurgy and other fields. This article will introduce the manufacturing method of sodium metasilicate, including raw material preparation, reaction process, post-treatment and other links.

2. raw material preparation

1. Sodium silicate: Sodium silicate is the main raw material of sodium metasilicate. Generally, industrial grade sodium silicate is used, which requires high purity and less impurities.
2. Sodium hydroxide: Sodium hydroxide is used to adjust the pH of the solution to promote the formation of sodium metasilicate.
3. Water: Deionized water or distilled water is generally used to ensure the purity of the product.

3. reaction process

1 ingredients: according to a certain proportion of sodium silicate, sodium hydroxide and water into the reaction kettle.
2. Stirring: Turn on the stirrer to mix the raw materials in the reaction kettle.
3. heating: heating reaction kettle, the reaction system to reach a certain temperature, promote the reaction.
4. pH adjustment: During the reaction, the pH value of the system was adjusted with sodium hydroxide to promote the formation of sodium metasilicate.
5. Aging: at a certain temperature, maintain a certain reaction time, so that sodium metasilicate is fully generated.

4. Post-Treatment

1. Filtration: After completion of the reaction, impurities and unreacted raw materials in the reaction system were filtered off.
2. Washing: The filter cake was washed with deionized water to remove impurities remaining on the surface of the product.
3. Drying: The washed product is dried to obtain a finished product of sodium metasilicate.
Precautions for
5.

1. Strictly control the quality and proportion of raw materials to ensure product quality and yield.
2. During the reaction, the uniformity of stirring and heating should be maintained to avoid local overheating and agglomeration.
3. When adjusting the pH value, pay attention to controlling the speed and amount of sodium hydroxide to avoid the impact of pH fluctuations on product quality.
4. In the post-treatment process, the effect of filtration, washing and drying must be ensured to avoid product loss and quality degradation.

6. Conclusion The manufacturing method of

sodium metasilicate includes raw material preparation, reaction process and post-treatment. It is necessary to strictly control the operating conditions and parameters of each link to ensure the quality and yield of the product. At the same time, it is necessary to pay attention to safety production and environmental protection requirements to ensure the sustainability and economy of the production process.

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