What are the performance characteristics of defoamers for alumina?

The defoamer for alumina has the advantages of low dosage, fast defoaming, long foam inhibition time, good water solubility, and no oil spots. It will not affect the film-forming properties and will not cause problems such as craters and fisheyes.

Alumina slurry defoamer is a defoamer compounded by a special process. The characteristics are: widely used in the manufacturing process of various adhesives for adhesive system defoamer, with easy dispersion and easy to use.

It has a fast defoaming effect and antifoaming function over a wide pH and temperature range, and can quickly remove foam, and has the effect of preventing secondary foaming.

It is used in alumina ceramic process, alumina ceramic slurry, alumina adhesive manufacturing, polyvinyl acetate, casein, dextrin, acrylic, natural and synthetic latex (latex), gels and glues, high-viscosity white latex, glue, EVA emulsion, latex, emulsion polymerization, acrylic emulsion, adhesives, white latex, starch glue, polyvinyl alcohol emulsion, and sexual defoaming and foam inhibition. All kinds of emulsions: acrylic resins, adhesives, white latex, polymer glue, water-based color paste, emulsion polymerization, waterproof coatings, printing, synthetic emulsions.

The defoamer for alumina is an improved defoamer according to the characteristics of alumina foaming. Without affecting iron oxides, foam is eliminated and foam is suppressed. Defoaming does not cause other adverse reactions to alumina.

The defoamer for alumina has a relatively large viscosity and is easy to use.

Defoamers for alumina generally have the performance characteristics of good water solubility, stable emulsion, good foam breaking and foam inhibition ability, strong alkali resistance, and low dosage.

Alumina defoamer, a defoamer carefully developed for the foaming characteristics of alumina system, can not only effectively eliminate the influence of foam in the solution on the grading treatment, improve the product particle size and the grading effect of the settling tank, improve the pumping capacity, and reduce the cavitation of the pump, but also does not affect the decomposition efficiency of the species, and the decomposition of the species is obvious, and will not have a negative impact on the product quality and index.

In the process of alumina production, especially in the factory that uses the Bayer method to produce alumina, a large amount of foam is often produced in the slurry, which reduces the decomposition rate of the sodium aluminate solution, weakens the efficiency of the evaporator, causes the increase of sodium carbonate content in the solution, reduces the flow of sand materials, and affects the coordination of production and installation workers. Blistering during the seed grading process in the settling tank will lead to the failure of the classification to achieve the desired effect, and even lead to the inability to use the settling tank for grading, which does not meet the production process standards. Alumina defoamer has the following characteristics:

a. Good dispersion and dynamic defoaming;

b. It has a long-lasting antifoam effect in the whole process;

c. Effective in a wide pH range.