Bobby E Faulkner

US Patent:

41824989, Jan 8, 1980

Filed:

Aug 25, 1978

Appl. No.:

5/936979

Inventors:

William M. Goldberger - Columbus OH
Bhupendra K. Parekh - Columbus OH
Bobby P. Faulkner - New Berlin WI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B02C 2300

US Classification:

241 24

Abstract:

Metal beads, e. g. , magnesium beads, or Mg alloy beads, having a high degree of rotundity, and having a thin coating of sludge or slag ingredients, are recovered from entrapment in a friable contiguous material of sludge or slag material by (a) a primary milling of the friable matrix in a hammer mill or impact mill, (b) screening the material to collect the desired particle sizes, (c) attriting the material in a secondary milling operation to further, and gently, grind sludge material from around the beads, and (d) separating the rotund beads from the pulverized matrix material by using a shape-classifier, such as a slanted shaker table. The material may be treated beforehand by melting the metal-containing sludge or slag, adding a flux or emulsifier material with stirring to cause dispersion of the metal into a relatively narrow particle size range and then freezing the molten mixture. The invention is especially useful in the case of Mg beads, since Mg beads are malleable and pyrophoric.

US Patent:

40123146, Mar 15, 1977

Filed:

Sep 5, 1975

Appl. No.:

5/610639

Inventors:

William M. Goldberger - Columbus OH
Bobby P. Faulkner - Columbus OH

Assignee:

Battelle Memorial Institute - Columbus OH

International Classification:

C10G 3110

US Classification:

208251R

Abstract:

Methods of treating an oil derived by liquefaction of coal particles to separate unreacted solid matter therefrom and collect it in water or other aqueous medium, which comprise controlling the specific gravity of the oil to provide an oleaginous fluid having a substantially lower specific gravity than the aqueous medium, as by mixing the oil with a liquid that is miscible therewith and has a lower specific gravity, or by controlling the temperature of the oil, or both; contacting the fluid with the aqueous medium; moving the fluid in such a manner as to provide a substantial acceleration thereto in a direction to drive most of the solid matter away from the fluid and into the aqueous medium as by moving the fluid in a swirling path around an axis while maintaining a portion of the aqueous medium around at least a portion of the periphery of the path; and separating the aqueous medium with the solid matter contained therein from the fluid. Typically a layer of the aqueous medium is formed with a layer of the fluid contiguous thereto, and the fluid layer is accelerated (as by centrifuging) to generate a force which acts to drive the particles from the fluid layer toward the aqueous layer; or the layers may be formed by injecting the fluid and the aqueous medium through separate, adjacent passageways into a cyclone separator whereby the layers are accelerated.