华选智能

Special Material Crushing and Sorting

Built a fully automated sorting line for a Japanese national-level waste electrical and electronic equipment processing fund-subsidized enterprise, increasing dismantling efficiency by 300%.

Industry Pain Points


Complex Raw Materials: 

Processing mixed waste circuit boards, discarded mobile phones, and fragments of disassembled TVs, refrigerators, and washing machines.


High Dependence on Manual Labor:

 Traditional methods rely on manual dismantling and coarse crushing, resulting in low efficiency, significant production bottlenecks, and exposing workers to toxic and hazardous environments.


Low Metal Recovery Rate: 

Traditional crushing and gravity sorting methods yield low recovery rates for precious metals, especially gold and palladium, leading to significant value loss in tailings.


Extremely High Environmental Risks: 

Dust contains heavy metals and brominated flame retardants; irregular purification processes like acid washing cause secondary pollution, risking license revocation.


Difficulty Meeting Fund Subsidy Audits:

 Strict requirements for material flow and product purity make traditional processes difficult to trace.


Solution

We designed and built a "Smart Crushing, Liberation, and Multi-Dimensional Precision Sorting System for Electronic Waste."


Solution


Automated Dismantling: Whole modules are fed in and crushed to prepare for subsequent sorting.

Eddy Current Sorting: Recovers remaining non-ferrous metal particles from non-metallic materials.

Sensor-Based Sorting: Identifies and sorts specific types of plastics or components containing precious metals.

Airflow Sorting: Further purification.
Output: High-purity metal concentrates (copper, gold, silver, palladium), high-value plastic pellets, glass, and harmless residues.



Technical Highlights
    • Intelligence and Automation

      Reduces manual contact, with full PLC control and traceable data.

    • Efficient Liberation Technology

      Ensures effective separation of components and substrates, metals and non-metals, which is essential for improving recovery rates.

    • Processing Scale

      Annual processing capacity of 5,000 tons of waste circuit boards or 10 million discarded mobile phones.

Quantitative Results
Total Metal Recovery Rate98% (with copper recovery >99%, and gold/palladium recovery increased from <60% to >95%).
Plastic Sorting Purity > 95%,Can be directly sold as recycled plastic pellets.
Harmful Substance Isolation Rate100%, ensuring environmentally compliant materials for subsequent metallurgical processes.

Cost Reduction and Efficiency Improvement

Purity of non-ferrous metals drastically increases, leading to a significant rise in value.

Labor costs reduced by 70%.

Investment Payback Period

1.5-2.5 years (due to the high value of precious metals, returns are rapid).

Environmental and Social Benefits

Safely disposes of tens of thousands of tons of toxic and hazardous electronic waste annually, preventing environmental pollution.

Reduces the need for primary mining, significantly saving energy and reducing carbon emissions.

Application Scenarios
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