HGMS COAL DESULFURIZATION WITH MICROWAVE MAGNETIZATION ENHANCEMENT

被引：10

作者：

KELLAND, DR

LAIFOOK, M

MAXWELL, E

TAKAYASU, M

JACOBS, IS

MCCONNELL, MD

机构：

[1] MIT,NATL MAGNET LAB,CAMBRIDGE,MA 02139

[2] GE,CORP RES & DEV,SCHENECTADY,NY 12301

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1988年 / 24卷 / 06期

基金：

美国国家科学基金会;

关键词：

Electric Heating--Microwaves - Magnetic Materials--Separation - Pyrites - Separators--Magnetic;

D O I：

10.1109/20.92133

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The performance of high-gradient magnetic separation (HGMS) in removing mineral pyrite from coal has been improved by increasing the pyrite's magnetization through selective microwave heating. Separations were carried out on conventional 2-T iron magnet separators and using a superconducting magnet capable of 15 T. A critical temperature for conversion of pyrite to ferrimagnetic monoclinic pyrrhotite was determined by vibrating- sample magnetometer measurements, also used to assess the conversion of pyrite in irradiated coal samples. Thermal analysis demonstrated that temperatures reached after heating were higher in the pyrite than in the coal. Pyrite-coal samples were separated using continuous axial separation and conventional wire- matrix HGMS.

引用

页码：2434 / 2436

页数：3

共 8 条

[1] ENHANCED MAGNETIC SEPARATION OF PYRITE FROM COAL AFTER MICROWAVE-HEATING [J].