Company cases about High-Efficiency Dry Powder Electromagnetic Filter Enhances Silicon Material Purification for a PV Wafer Manufacturer

High-Efficiency Dry Powder Electromagnetic Filter Enhances Silicon Material Purification for a PV Wafer Manufacturer

2026-01-27

The Challenge: Impurity Bottlenecks in PV Wafer Manufacturing

A leading PV wafer manufacturer was facing significant bottlenecks in its polysilicon material purification process. Residual ferromagnetic impurities were causing micro-cracks and defects in wafers, leading to a substantial product rejection rate.

Product rejection rate: 6.5%
Traditional magnetic separation system capture limit: ≥1 μm
Iron impurity content in final material: 105 ppb
Production line availability rate: 79% (due to frequent manual cleaning)

The Solution: TMY Machinery’s High-Efficiency Dry Powder Electromagnetic Filter

To effectively address these critical challenges, the manufacturer adopted TMY Machinery’s advanced High-Efficiency Dry Powder Electromagnetic Filter. This innovative device was engineered to significantly enhance purification capabilities and operational efficiency.

Impurity capture capability: As small as 0.2 μm
Removal efficiency: Over 99.3%
Automated pulse cleaning system: Eliminates manual intervention
Continuous operation: Up to 35 days without interruption
Material loss: Less than 0.3% (due to fully enclosed structure)

The Impact: Enhanced Quality and Operational Excellence

Following the successful implementation of TMY Machinery’s solution, the manufacturer experienced dramatic improvements across key operational and quality metrics, solidifying its market position.

Production line availability rate increased to: 95%
Wafer rejection rate dropped to: 1.2%
Iron impurity content in polysilicon fell to: Below 12 ppb
Achieved: Strict quality standards of high-efficiency solar cells
Result: Secured long-term supply contracts with global PV module suppliers, strengthening market position.

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