
                         Roanoke Times
                 Copyright (c) 1995, Landmark Communications, Inc.

DATE: FRIDAY, April 20, 1990                   TAG: 9004200126
SECTION: BUSINESS                    PAGE: A7   EDITION: STATE 
SOURCE: 
DATELINE:                                 LENGTH: Short

PA. COMPANY MARKETS TECH COAL SCRUBBER

A Pittsburgh company has licensed a process developed at Virginia Tech for cleaning sulfur dioxide and other impurities from coal.

ICF Kaiser Engineers Inc. is selling the technology under the trade name of Microcel TM. ICF is a subsidiary of American Capital and Research Corp. of Fairfax.

Microcel TM technology was developed by Roe-Hoan Yoon, director for the Virginia Center for Innovative Technology's Virginia Center for Coal and Minerals Processing at Tech, and his associates, Greg Adel and Jerry Luttrell. The three spent most of a decade developing the process, called microbubble flotation, in which fine coal particles attach themselves to air bubbles and are separated from impurities.

The process can be used in other industries, including those producing kaloin clay, copper, lead and zinc. A model of the flotation column will be on exhibit at Environtech at CIT headquarters in Herndon on Earth Day Sunday. - Staff report

by CNB