A new physical process for desulfurization of low-rank coals


Celik M., Yildirim I.

FUEL, vol.79, no.13, pp.1665-1669, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 13
  • Publication Date: 2000
  • Doi Number: 10.1016/s0016-2361(00)00013-2
  • Title of Journal : FUEL
  • Page Numbers: pp.1665-1669

Abstract

A processing route involving low temperature carbonization followed by dry magnetic separation is put forward for the desulfurization and deashing of typical low-rank lignitic coals. The -3 mm lignite samples were subjected to low temperature carbonization at 600 degrees C for 15 min and then upgraded by magnetic separation. Under optimum conditions, a remarkable decrease in both ash and more importantly in total and particularly organic sulfur was achieved. A systematic study of the mechanism of the sulfur removal together with the literature findings reveals the formation of an iron-sulfur coordination compound in coal. (C) 2000 Elsevier Science Ltd. All rights reserved.