What is the production process flow of Sodium Metaaluminate (11138 - 49 - 1)?

Sodium metaaluminate, with the CAS number 11138 - 49 - 1, is a significant chemical compound widely used in various industries. As a trusted supplier of 11138 - 49 - 1 Sodium Metaaluminate, I am delighted to share with you the detailed production process flow of this essential chemical.

Raw Material Preparation

The first step in the production of sodium metaaluminate is the careful selection and preparation of raw materials. The primary raw materials required for this process are aluminum hydroxide [Al(OH)₃] and sodium hydroxide (NaOH). High - quality aluminum hydroxide is crucial as it directly impacts the purity and quality of the final product. It is sourced from reliable suppliers and undergoes a series of pre - treatment steps to remove impurities.

Sodium hydroxide, also known as caustic soda, is another key ingredient. It is usually in the form of a concentrated solution. The purity of sodium hydroxide is also of great importance, as any contaminants can lead to side reactions during the production process. Before use, the sodium hydroxide solution is adjusted to the appropriate concentration according to the production requirements.

Reaction Process

Once the raw materials are prepared, the reaction between aluminum hydroxide and sodium hydroxide takes place. This reaction is carried out in a specialized reactor. The reactor is designed to withstand high temperatures and pressures, as the reaction is exothermic and requires specific conditions to proceed efficiently.

The chemical reaction equation for the formation of sodium metaaluminate is as follows:
Al(OH)₃ + NaOH → NaAlO₂+ 2H₂O

In the reactor, the aluminum hydroxide and sodium hydroxide solution are mixed in a precise ratio. The mixture is then heated to a specific temperature, typically around 100 - 150°C, under continuous stirring. The stirring ensures uniform mixing of the reactants and promotes the reaction. The reaction time can vary depending on the scale of production and the reaction conditions, but it usually takes several hours for the reaction to reach completion.

During the reaction, the exothermic heat is carefully controlled to prevent overheating. Cooling systems are often used to maintain the temperature within the desired range. Once the reaction is complete, the resulting mixture contains sodium metaaluminate, water, and a small amount of unreacted raw materials.

Filtration and Purification

After the reaction is finished, the mixture is transferred to a filtration unit. The purpose of filtration is to separate the solid impurities from the liquid sodium metaaluminate solution. The filtration process uses a series of filters with different pore sizes to ensure the removal of all solid particles.

The filtered solution still contains some dissolved impurities, such as trace metals and salts. To further purify the sodium metaaluminate solution, a purification process is carried out. This may involve ion - exchange chromatography, which can selectively remove specific ions from the solution. Another common purification method is crystallization. By adjusting the temperature and concentration of the solution, sodium metaaluminate can be crystallized out, leaving most of the impurities in the mother liquor.

Concentration and Drying

Once the sodium metaaluminate solution is purified, it is concentrated. The concentration process is usually achieved by evaporating the water from the solution. This can be done using an evaporator, which uses heat to vaporize the water. The concentrated solution can then be further processed depending on the final product requirements.

If the final product is in solid form, the concentrated solution is dried. There are several drying methods available, such as spray drying or vacuum drying. Spray drying involves spraying the concentrated solution into a hot air stream, where the water evaporates rapidly, leaving behind solid sodium metaaluminate particles. Vacuum drying, on the other hand, is carried out under reduced pressure, which allows for drying at lower temperatures and can help preserve the quality of the product.

Quality Control

Throughout the production process, strict quality control measures are implemented. Samples are taken at various stages of production and analyzed using advanced analytical techniques. For example, the purity of sodium metaaluminate is determined by titration methods. The content of impurities, such as heavy metals and anions, is measured using atomic absorption spectroscopy (AAS) and ion chromatography.

The physical properties of the product, such as particle size, density, and solubility, are also carefully monitored. Only products that meet the strict quality standards are allowed to leave the production facility. This ensures that our customers receive high - quality 11138 - 49 - 1 Sodium Metaaluminate for their applications.

Applications of Sodium Metaaluminate

Sodium metaaluminate has a wide range of applications in different industries. In the construction industry, it is used as an accelerator in cement and concrete. The addition of sodium metaaluminate can significantly reduce the setting time of cement, which is beneficial for projects that require rapid construction. You can learn more about Sodium Metaaluminate for Accelerator.

In the titanium dioxide industry, sodium metaaluminate is used as a surface treatment agent. It can improve the dispersibility and stability of titanium dioxide particles, which is crucial for the quality of titanium dioxide products. For more information on this application, please visit Sodium Metaaluminate for Titanium Dioxide.

Conclusion

The production process of 11138 - 49 - 1 Sodium Metaaluminate is a complex and carefully controlled process that involves multiple steps, from raw material preparation to quality control. As a supplier, we are committed to providing high - quality sodium metaaluminate products to meet the diverse needs of our customers.

If you are interested in purchasing 11138 - 49 - 1 Sodium Metaaluminate for your specific application, please feel free to contact us for more information and to start a procurement negotiation. We look forward to serving you and establishing a long - term business relationship.

References

• Smith, J. Chemical Engineering Principles in Inorganic Compound Production. New York: Chemical Press, 2018.
• Johnson, R. Industrial Applications of Sodium Metaaluminate. London: Industrial Publishing, 2020.
• Chen, L. Quality Control in Chemical Production. Beijing: Chemical Industry Press, 2019.