Selective Recycling of Cu Alloys from Metal-Rich Particles of Crushed Waste Printed Circuit Boards by High-Temperature Centrifugation

被引：0

作者：

Meng, Long ^{[1
,2
,3
]}

Zhong, Yiwei ^{[1
]}

Wang, Zhe ^{[1
]}

Guo, Zhancheng ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, 30 Xueyuan Rd, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China

来源：

11TH INTERNATIONAL SYMPOSIUM ON HIGH-TEMPERATURE METALLURGICAL PROCESSING | 2020年

基金：

中国国家自然科学基金;

关键词：

Printed circuit boards; High-temperature centrifugation; Recovery; Copper alloys; SUPERGRAVITY SEPARATION; RECOVERING PB; COPPER; PHASE;

D O I：

10.1007/978-3-030-36540-0_88

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-temperature centrifugation is an efficient and environmentally friendly method for separating and recycling comminuted waste printed circuit boards (WPCBs). In this research, it was used to recover copper (Cu) from metal-rich particles of WPCBs. Two steps separation process were conducted, and two alloys (Sn-Cu and Cu-Zn) were obtained at different temperatures. The results indicate that temperature has a great influence on the composition of Cu alloy, while the gravity coefficient only affects the recovery rate. At an optimized temperature of 1300 degrees C and a gravity coefficient of 1000, the total recovery values of Cu, Zn, Pb, and Sn were 98.84%, 86.96%, 98.33%, and 92.62%, respectively. By a combination of appropriate hydrometallurgical process and centrifugal separation of metals, this clean and efficient technology achieved a new way of recycling valuable metals from PCBs and effectively preventing environmental pollution of WPCBs.

引用

页码：987 / 1000

页数：14