It Adopts Dual-energy X-ray Transmission Technology (de-xrt). Based On The Differences In Absorption And Penetration Of Dual-energy X-rays Between Light Metals And Heavy Metals

Donar Dual-Energy X-Ray Sorter

The Donar Dual-Energy X-Ray Sorter utilizes dual-energy X-ray transmission technology (DE-XRT), which leverages the differences in absorption and penetration of low- and high-energy X-rays between light metals and heavy metals. It accurately detects and removes heavy metal contaminants from scrap, enabling efficient purification and recovery of aluminum scrap.

The equipment is based on the principle of dual-energy X-ray transmission imaging. By measuring the absorption and penetration characteristics of different materials under dual-energy X-rays, it achieves precise separation of aluminum from heavy metal impurities in mixed non-ferrous metal scrap. The system is equipped with two sets of X-ray sources:

• Low-energy X-rays: 20–50 keV

• High-energy X-rays: 80–150 keV

The Dual Energy Ratio (DER) characteristics for different materials are as follows:

• Aluminum: Moderate absorption of low-energy X-rays (medium penetration) and low absorption of high-energy X-rays (high penetration). DER range: 1.5–2.5.

• Heavy metals (e.g., copper, zinc, stainless steel): Very high absorption of low-energy X-rays (low penetration) and moderate absorption of high-energy X-rays (medium penetration). DER > 2.5.

Thanks to the significant difference in DER, the Donar Dual-Energy X-Ray Sorter can accurately distinguish aluminum from heavy metal contaminants in mixed non-ferrous metal scrap.

Technical Features

Advanced Dual-Energy X-Ray Transmission System
Based on differences in material absorption and penetration of dual-energy X-rays, the system precisely identifies and efficiently separates aluminum from heavy metal impurities.

High-Performance Pneumatic Ejector System
Utilizes a self-developed, high-strength, high-response pneumatic ejector valve, ensuring precise rejection and long-term stable operation even under high throughput conditions.

Flexible Modular Design
Offers modular solutions with belt widths of 1200 mm, 1800 mm, and 2800 mm, suitable for various applications such as building window frames, beverage cans, and electronic scrap recycling.

Typical Applications

• Accurate detection of heavy metal contaminants in aluminum scrap

• Building window frame recycling

• Beverage can recycling

• Aluminum recycling from electronic scrap