Yuanyuan Dong

Title: Yuanyuan Dong and E-Waste-Recycled Brazing Materials.

Introduction

Yuanyuan Dong is an inventor associated with Zhengzhou Research Institute of Mechanical Engineering in Henan, China. His listed patent focuses on producing copper-tin-nickel brazing material from alloys recovered from electronic waste.

Latest Patents

Dong is credited with 1 patent: “Copper-tin-nickel Brazing Material Prepared by Alloys Recycled from E-Waste, Preparation Method Therefor, and System Thereof.” The invention describes a process for refining recycled copper-tin-iron-nickel alloy and converting it into brazing material.

The method uses nano-silicon dioxide in a crucible to help remove zinc and lead as slag during melting. Refining gas is introduced into the molten metal to remove impurities and gases associated with lead, iron, sulfur, and oxygen. Directional solidification then concentrates iron and antimony at one end for removal, producing a copper-based intermediate alloy that is subsequently smelted and powdered.

Career Highlights

Dong’s listed work connects materials processing with the recovery and reuse of metals from electronic waste. The patent’s approach aims to refine recycled alloy into a copper-based material suitable for brazing applications.

Collaborations

Dong is associated with Zhengzhou Research Institute of Mechanical Engineering. His listed coworker is Tianran Ding, who is identified as a woman.

Conclusion

Yuanyuan Dong’s patent describes a method for turning recycled electronic-waste alloys into copper-tin-nickel brazing material through impurity removal, directional solidification, and further processing.