Polycrystalline Silicon Microwave Drying Equipment

Polycrystalline Silicon Microwave Drying Equipment

Polycrystalline silicon is a form of simple silicon. When molten silicon solidifies under supercooled conditions, silicon atoms are arranged into many nuclei in the form of diamond lattices. If these nuclei grow into crystalline grains with different orientations on the crystal plane, then these grains combine to form polycrystalline silicon.

Polycrystalline silicon microwave drying equipment adopts unique microwave source and its control technology to ensure that the microwave source system works continuously and steadily in all kinds of complex environments, in which the normal service life of magnetron is longer than one year; Polycrystalline silicon drying equipment adopts a high-efficiency microwave transmission system specially designed according to the standard, which feeds materials evenly, ensures that materials are dried evenly and effectively avoids materials. The phenomenon of excessive local temperature.

Characteristics of Polycrystalline Silicon Microwave Drying Equipment:

1. Conventional thermal drying with short time and fast speed transmits heat from the surface to the interior by means of heat conduction, convection or radiation. Often it takes a long time to achieve the required dryness within the object. The heating treatment time of microwave polysilicon dryer is greatly shortened. Under a certain power density intensity, it usually takes only tens of seconds and minutes to achieve satisfactory results.

2. Low temperature drying keeps microwave heating and non-thermal effects. Compared with conventional thermal drying, polycrystalline silicon microwave drying equipment can achieve the desired drying effect at lower temperature and in shorter time.

3. Energy-saving microwave power conversion efficiency is generally more than 70%. Microwave polycrystalline silicon drying equipment is directly processed, the heating box itself is not heated, so there is no additional heat loss, so energy-saving, power-saving, generally can save 30-50%.

4. Homogeneous and thorough conventional thermal drying starts from the surface of the material and then transfers to the interior of the material through heat conduction. There is temperature difference between inside and outside material, and the consistency of drying effect between inside and outside material is poor. To shorten the treatment time, the drying effect is often affected by insufficient internal temperature. This phenomenon can be improved by increasing the treatment temperature. Microwave has penetration performance, surface and internal simultaneously, and can ensure that both internal and external temperatures meet the required values, so the drying is uniform and thorough.

5. Easy to control, easy to realize automatic production of microwave polysilicon drying treatment equipment is simple to operate, easy to control, no thermal inertia, can be processed according to different process specifications, reduce production operators, reduce production costs.

Professional technical parameters of polysilicon microwave drying equipment:

Polycrystalline silicon can be used as raw material for drawing crystalline silicon. The difference between polycrystalline silicon and monocrystalline silicon is mainly manifested in physical properties. For example, the anisotropy of mechanical, optical and thermal properties of polycrystalline silicon is far less obvious than that of monocrystalline silicon, and the conductivity of polycrystalline silicon is far less significant than that of monocrystalline silicon, or even almost no conductivity. In terms of chemical activity, there is little difference between them. Polycrystalline silicon and monocrystalline silicon can be distinguished from each other in appearance, but the real identification must be based on the determination of crystal plane orientation, conductive type and resistivity by analysis. Polycrystalline silicon is the direct raw material for the production of monocrystalline silicon. It is the basic electronic information material for semiconductor devices such as artificial intelligence, automatic control, information processing, photoelectric conversion and so on.