Polycrystalline silicon industry acid treatment technology

About Polycrystalline silicon industry acid treatment technology

Polysilicon is the main raw material for manufacturing monocrystalline silicon, solar cells and high purity silicon products. A large amount of waste acid is produced in the production of polysilicon. The waste acid is recovered by diffusion dialysis and then returned to the system for use, which not only saves resources for enterprises, but also solves the problem of environmental pollution.

Efficient Impurity Removal

This technology employs a wet acid treatment process using a mixture of hydrochloric, sulfuric, and nitric acids to remove boron, phosphorus, aluminum, and other metallic impurities from polycrystalline silicon. Its high impurity removal efficiency is achieved through customizable, process-driven parameters, ensuring consistently pure silicon for downstream industrial applications.


Customizable for Your Facility

With a design that supports both batch and continuous processes, this acid treatment technology adapts to various plant requirements. Processing capacity and automation level can be configured as needed, making it scalable for growing operational demands and diverse facility layouts.


Environmental and Safety Control

Equipped with integrated effluent and fume treatment systems, the solution ensures regulatory compliance while reducing emissions. Key safety features, such as leak detection, emergency shutdown, and advanced ventilation controls, provide a secure operational environment. Turnkey installation is complemented by round-the-clock technical support.