Washability Curves for Pyrite Removal in Coal Using Perchloroethylene as Heavy Medium
Abstract
Pyritic sulfur is removed from raw, high sulfur coal by gravitational separation using a suitable solvent, or heavy medium. This is possible due to the inherent difference in the specific gravity of clean coal and the mineral matter in it. The effectiveness of perchloroethylene (PCE) as a heavy medium was experimentally evaluated. The most important factors governing the efficiency of this process are the quantity of clean coal yield and depyriting efficiency. It was found that the pyritic sulfur removal efficiency as well as the clean coal yield depended strongly on its particle size distribution and mineral matter content. This paper presents valuable data on the effect of particle size of coal on clean coal yield as well as pyritic sulfur removal efficiency. A "master" curve is obtained to determine a workable size range which gives the most optimal yield of clean and depyrited coal.
Recommended Citation
P. Vishnubhatt and S. Lee, "Washability Curves for Pyrite Removal in Coal Using Perchloroethylene as Heavy Medium," Fuel Science and Technology International, Taylor & Francis, Jan 1993.
The definitive version is available at https://doi.org/10.1080/08843759308916105
Department(s)
Chemical and Biochemical Engineering
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1993 Taylor & Francis, All rights reserved.
Publication Date
01 Jan 1993
