High temperature alumina, because of its own advantages, is widely used in various occupations, but according to the different needs of application, the types of its process are also different. Today, we will introduce the process types of high temperature alumina.

1. Casting set series.

The high temperature alumina has uniform grain, good filling function and casting activity, which can improve the sintering density, high temperature bending resistance and pressure resistance of castable, and enhance the function of wear resistance, corrosion resistance and scour resistance of castable.

2. Ceramic granulator.

The ceramic granulation powder of high temperature alumina is made up of scientific research ingredients, active grinding, pulping and spray drying. The particle size distribution is uniform, fluidity is good, the strength is moderate, the strength of the green body is high, the demoulding function is excellent, and the firing temperature is low.

3. Dry pressure, isostatic pressure process series.

High temperature alumina is refined by advanced formula and strict technology. The product has reasonable particle size distribution, good particle fluidity, loose intergranular combination, good grindability and easy sintering. Its ceramic parts are smooth and smooth, high mechanical strength and good electrical insulation, which is the ideal material for special ceramics.

4. Fire resistant data series.

The high temperature alumina crystal is stable, which can improve the fire resistance of the product, improve the mechanical function, produce the unfixed refractory data, the fixed refractory data, the furnace laying data, etc. and satisfy the requirements of higher temperature, excellent thermal shock stability and processing characteristics, and extend the service life of the fire resistant data.

In a word, different process types, their production methods are different, so, when producing high temperature alumina, we can choose the appropriate process type according to the production situation.

So what are the ways to regenerate? Today, let's give us a brief introduction.

1. The function of regenerated high temperature alumina is better than that of the new product. This method is to use dilute nitric acid impregnation and calcination to treat the waste activated alumina, which is intended to improve the pore structure, improve the activity and reach the purpose of recycling. Compared with other renewable methods, the treatment method is novel, and the activity of recycled activated alumina is high, and it has environmental protection and economy.

2. A method of regeneration of high temperature alumina by dilute nitric acid impregnation and calcination is to clean, dry and dry the waste activated alumina in the pool, and soak it with 8 to 20% dilute nitric acid solution for 5 to 25 minutes. The impregnated waste active alumina is washed and dried by water and placed in the kiln. It is calcined at 500 to 800 degrees, and kept for 2 to 6 hours. It is self-contained Cool to room temperature.

3. The saturated activated alumina is put into 100g/l aluminum sulfate solution for 30 hours, and the solution is discarded, washed with clean water for 3 to 5 times, and 2L water is used each time. The surface of activated alumina after long-term application will be yellowish brown, and the effect of fluoride removal will also decrease. This is caused by impurities adsorption. After treatment with 3% hydrochloric acid once, the above method can be used for regeneration.

In conclusion, the above-mentioned regeneration methods of high temperature alumina have advantages, which can be selected according to the actual needs. However, after application, they should not be thrown randomly. Not only waste materials, but also form certain dangers. They should be operated with care and safety.