Richard D Mohr

US Patent:

49901796, Feb 5, 1991

Filed:

Apr 23, 1990

Appl. No.:

7/513121

Inventors:

Theodore F. Munday - Kendall Park NJ
Richard A. Mohr - Martinsville NJ

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

C22B 400

US Classification:

75 1019

Abstract:

The excessive wear and formation of ring-like cavities in carbon crucibles used to contain iron-based compositions that are heated in a plasma furnace to a temperature of from about 2000. degree. C. to aboout 2700. degree. C. are reduced or eliminated by adding carbon particles to the crucible in amounts of at least about 6 weight percent of the melt, and preferably in amounts exceeding the solubility of carbon in the heated melt.

US Patent:

40201481, Apr 26, 1977

Filed:

Jul 15, 1975

Appl. No.:

5/596200

Inventors:

Richard A. Mohr - Martinsville NJ
Sushil K. Bhalla - Princeton NJ
Peter H. Zeh - Williamsville NY

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

C01B 1510

US Classification:

423415P

Abstract:

Manufacturing dry, free-flowing crystalline sodium carbonate peroxide by passing a gas stream at a temperature between 70. degree. and 150. degree. C into a drying zone containing moist sodium carbonate peroxide while maintaining the exit gas stream temperature between 50. degree. and 130. degree. C until the sodium carbonate contains between 0. 05% and 0. 5% by weight moisture, immediately passing the dried material into a cooling zone where the sodium carbonate peroxide temperature is lowered to between 0. degree. and 40. degree. C, and removing a dry, free-flowing, crystalline sodium carbonate peroxide product containing between 0. 001% and 0. 20% by weight moisture.

US Patent:

43943616, Jul 19, 1983

Filed:

May 24, 1982

Appl. No.:

6/381279

Inventors:

Sidney Berkowitz - Highland Park NJ
Richard A. Mohr - Martinsville NJ

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

C01B 2516

US Classification:

423321S

Abstract:

An organic solvent system, for use in solvent extraction of wet process phosphoric acid, is a mixture of an organic phosphate ester and an essentially water-immiscible organic ketone or alcohol.

US Patent:

48063258, Feb 21, 1989

Filed:

Jul 14, 1988

Appl. No.:

7/219963

Inventors:

Theodore F. Munday - Kendall Park NJ
Richard A. Mohr - Martinsville NJ

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

C01B 2501
C01B 2502
C01B 2504

US Classification:

423322

Abstract:

Ferrophos is treated in a plasma furnace by maintaining an electric arc between a cathode and at least one point on the surface of the ferrophos which serves as the anode in the presence of an inert plasma gas, maintaining the average temperature of the ferrophos at about 2,000. degree. C. to about 2,700. degree. C. , evolving gaseous phosphorus from the ferrophos until it contains less than about 7% by weight phosphorus, removing a purified phosphorus gas as one product and a metal concentrate having a reduced phosphorus content as a coproduct.