(1. 昆明理工大學 機電工程學院，昆明 650550；
2. 昆明理工大學 固體廢棄物資源化工程研究中心，昆明 650033；
3. 昆明理工大學 云南省特種冶金重點實驗室，昆明 650093；
4. 成都興原再生資源股份有限公司，成都 630000)
摘 要: 隨著報廢汽車的迅猛增長，高效、低耗的破碎分離技術將成為其未來資源化的主流發(fā)展方向之一。渦電流分離技術在有色金屬顆粒料分選方面優(yōu)勢明顯，但在報廢汽車破碎銅鋁件的高效分離方面仍有待進一步研究。通過建立單個永磁體磁場的計算模型結合仿真工具研究得到扇形、矩形永磁體以兩種方式排布于磁輥上時的磁場強度及其空間分布規(guī)律。結果表明：Halbach陣列排布較N-S交替排布更適合于大尺寸異形薄壁銅鋁件的分離；通過渦流力計算模型，計算得到渦電流分離過程中銅鋁件理想運動狀態(tài)下的最大分選尺寸。研究結果為報廢汽車破碎銅鋁件的有效分離提供一定的理論依據。
關鍵字: 有色金屬；永磁體；Halbach陣列；渦電流；分離
（1. Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650550, China;
2. National Engineering Research Center for Waste Resource Recovery, Kunming University of Science and Technology, Kunming 650033, China;
3. Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;
4. Chengdu Xingyuan Renewable Resources Investment Co., Ltd., Chengdu 630000, China）
Abstract:With the rapid growth of end-of-life vehicles (ELVs), the efficient and low-cost crushing and separation technology will become one of the mainstream development directions for its future. The eddy current separation technology has obvious advantages in the sorting of non-ferrous metal particles, but it still needs further research on the efficient separation of scrapped copper-aluminum parts for ELVs. By calculating the magnetic field of a single permanent magnet and the simulation tool, the magnetic field strength and spatial distribution of the fan-shaped and rectangular permanent magnets arranged on the magnetic roller in two ways are obtained. The results show that the Halbach array is arranged alternately with N-S. The cloth is more suitable for the separation of large-sized and shaped thin-walled copper-aluminum parts. The maximum sorting size of the copper-aluminum parts under the ideal motion state is calculated by the eddy current force calculation model. The research results provide a theoretical basis for the effective separation of scrapped copper-aluminum parts for ELVs.
Key words: non-ferrous metal; permanent magnet; Halbach array; eddy current; separation
