Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same

US8505735B2 · kind B2 · utility

Assignee

• CHINA SHENHUA ENERGY COMPANY LIMITED · CN

Inventors

• Jianguo Han · Beijing, CN
• Zhaohua Guo · Beijing, CN
• Wenhui Zhang · Jiaocheng District, CN
• Cundi Wei · Beijing, CN
• Yongwang Wang · Lo Wu, CN
• Shaonan Xu · Beijing, CN
• Sa Lv · Beijing, CN
• Hong Dong · Diamond Bar, US
• Junzhou Chi · Beijing, CN
• Jianmin Zhang · Greer, US
• Qingan Nan · Beijing, CN

Key dates

• Filing date: Feb 23, 2011
• Grant date: Aug 13, 2013
• Expiry date: Feb 23, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03C2201/18
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A vertical ring magnetic separator for de-ironing of coal ash comprises a rotating ring (101), an inductive medium (102), an upper iron yoke (103), a lower iron yoke (104), a magnetic exciting coil (105), a feeding opening (106), a tailing bucket (107) and a water washing device (109). The feeding opening (106) is used for feeding the coal ash to be de-ironed, and the tailing bucket (107) is used for discharging the non-magnetic particles after de-ironing. The upper iron yoke (103) and the lower iron yoke (104) are respectively arranged at the inner and outer sides of the lower portion of the rotating ring (101). The water washing device (109) is arranged above the rotating ring (101). The inductive medium (102) is arranged in the rotating ring (101). The magnetic exciting coil (105) is arranged at the periphery of the upper iron yoke (103) and the lower iron yoke (104) so as to make the upper iron yoke (103) and the lower iron yoke (104) to be a pair of magnetic poles for generating a magnetic field in the vertical direction, wherein the inductive medium (102) is layers of steel plate meshes, each steel plate mesh is woven by wires, and ridge-shape sharp corners are formed at the …