A mixer is a mechanical device that uses mechanical force and gravity to mix two or more materials evenly. In the process of mixing, it can also increase the contact surface area of materials to promote chemical reactions; it can also accelerate physical changes. There are many types of mixers. Let's learn how to correctly choose the type of mixer?

When selecting the type of mixer equipment, the type of mixer is determined according to the quality of the mixture obtained in a series of independent experiments. Generally, it is necessary to comprehensively consider the quality of the mixture and the compatibility of different types of mixing equipment to the process, and the incompatible mixing equipment needs to be eliminated during the initial selection. These compatibilities mainly refer to the following:

product purity

In multi-industrial processing, product purity is important, and to avoid contamination between batch operations, mixing equipment needs to be thoroughly cleaned after each use. In order to adapt to this condition, the internal shape of the mixer should be smooth, the inner surface should be polished with high precision, and it should be easy to clean. To avoid possible contamination of the lubricating oil, bearings and seals should not come into direct contact with or rest on the mixture. Drum mixers—that is, common double-cone mixers, V-type mixers, two-dimensional motion mixers, etc., can meet all the above requirements, have a simple shape, and the inside of the mixer has no contact with the rotating part.

The low-speed convective mixing equipment with complex impeller device not only has cleaning problems, but also all convective mixing equipment has the possibility of contact between the mixture and the lubrication surface, such as horizontal ribbon mixers, conical mixers, etc. In addition, many mixers are not suitable for processing environments where product specifications change frequently and require thorough cleaning.

Mixer Containment

When choosing the type of mixer, in addition to the purity of the product, environmental issues such as dust spillage and environmental pollution also need to be considered. From a health, safety and economic point of view, dust spillage should be minimized, and all powders should be sealed in a closed mixing container for operation. However, during feeding and unloading operations, the airtight container needs to be opened. At this time, some fine dust will overflow and disperse into the surrounding air, and corresponding measures should also be taken to minimize pollution.