The Size of Silicon Metal

The size is the size of silicon metal particles，big or small，this parameter is crucial for the application and processing of silicon metal.

Silicon metal (Si metal), also known as crystalline silicon or industrial silicon, is mainly used as an additive in non-iron-based alloys. In its production process, the particle size is an important process factor in smelting, and the appropriate particle size is influenced by various factors, including the type of silica, furnace capacity, operating conditions, and the type and particle size of reducing agents.

In practical applications, the particle size of silicon metal needs to be determined according to specific requirements:

lFor example, in the solar energy industry, controlling the particle size range of silicon metal between 50-120mm is to avoid poor permeability of the furnace material and unreacted silica settling at the bottom of the furnace or entering the silicon solution, causing an increase in slag content and thus reducing power consumption.

lIn aluminum alloy enterprises, due to the limitations of smelting furnaces and processes, there are specific particle size requirements for silicon blocks, generally ranging from 10 to 100mm. It is alsp a typical granularity requirement.

In addition, during the processing of metal silicon powder, different particle sizes of silicon metal powder will also be produced according to different production processes and requirements:

lThe particle size of silicon metal powder is usually between 10 - 100 µm. Special specifications of silicon metal powder, customized according to customer needs, can reach 45-325 mesh, with an average particle size of 120-200 µm.

lFor example, for applications that require high precision, finer granularity may be chosen, such as 1µm or smaller; For situations where granularity requirements are not as strict, larger granularity may be chosen, such as -200 mesh or larger.

Therefore, the commonly used particle size of metal silicon powder does not have a fixed range, but varies according to different application requirements.

The national standard also has clear requirements for the particle size of industrial silicon, andeach batch of industrial silicon should undergo particle size inspection. This indicates that the particle size ofsilicon metal is not only related to its application effectiveness in specific industries, but also constrained by national regulations.

In summary, the particle size of silicon metal can be adjusted according to specific application requirements and production conditions, ranging from extremely fine powders (such as 100 mesh, 325 mesh) to larger block like substances (such as 6-20mm). This wide particle size range enables silicon metal to meet the needs of different industries and processes.

The selection and control of silicon metal particle size is a complex process that requires comprehensive consideration of production conditions, application requirements, and national standards. Through reasonable particle size control, the use effect of silicon metal can be optimized, and product quality and production efficiency can be improved.