Alumina granulator is a kind of equipment used to process alumina powder into granular materials. It is widely used in chemical, metallurgical, ceramic and other industries. Granulator is a kind of equipment used to make alumina powder into granular products. The following are some common types and their characteristics:

Inclined mixing granulator

Working principle: The inclined design is adopted to make the material move up and down, left and right and radially during the mixing process, so as to avoid the accumulation of materials at the bottom of the container, reduce dead angles, and achieve efficient mixing and granulation.

Rolling granulation: The powder rolls in the rotating drum and gradually forms particles.

Advantages: It can adapt to various types of alumina raw materials, including powder, granules, etc., and can also be applied to different production processes such as Bayer process and sintering process; equipped with advanced control system, it can automatically operate and intelligently adjust parameters such as mixing speed, tilt angle, feeding speed, etc.

Pressure spray granulator

Working principle: The liquid material is fed into the pressure atomizer through a high pressure of 2-20MPa to be atomized into small droplets. The droplets are fully in contact with the hot air, and the drying process is quickly completed to obtain powder or fine particle finished products.

Extrusion granulation: The powder is extruded into strips through a die and then cut into particles.

Advantages: Fast drying speed, especially suitable for drying heat-sensitive materials; the resulting product is spherical particles with uniform particle size, good fluidity, good solubility and high product purity; simple and stable operation, convenient control, and easy to realize automated operation.

Centrifugal granulation spray dryer

Working principle: After mixing gaseous and liquid materials, the centrifugal force is generated by a high-speed rotating centrifugal mechanism to spray the mixed material into fine droplets, and then dry it through a hot air flow.

Advantages: Compact structure, easy operation, and can prepare microparticles with high uniformity requirements; the characteristics of high-speed rotation and high-speed spraying can greatly improve the preparation speed of alumina particles, shorten the production cycle, and have low energy consumption.

Extrusion granulation: The powder is extruded into strips through a die and then cut into particles.

2. Main structure

Feeding system: used to convey alumina powder.

Granulation device: the core part, completing the conversion of powder to particles.

Drying system: used for drying particles after wet granulation.

Screening system: Separate the particles that meet the requirements.

Control system: Automatically control the granulation process.

3. Application areas

Catalyst carrier: used for catalyst carriers in petrochemical industry.

Ceramic materials: used for the production of ceramic products.

Refractory materials: used for high-temperature refractory materials.

4. Equipment selection

Considerations when selecting:

Production requirements: Select the appropriate model according to the production scale.

Particle size: Different equipment is suitable for different particle size requirements.

Process requirements: Choice of dry or wet granulation.

5. Maintenance and care

Clean the equipment regularly to prevent powder accumulation.

Check the wearing parts and replace them in time.

Lubricate the moving parts to ensure the normal operation of the equipment.

6. Common problems and solutions

Uneven particles: adjust the feed speed or granulation parameters.

Equipment blockage: Check the feed system to ensure the fluidity of the powder.

Insufficient particle strength: optimize the granulation process or adjust the formula.