Fmc Corporation

Astaris LLC

Richard R Severns

Joseph H Finley

Robert M Zakotnik

A method of producing phosphorus in which a mixture of phosphoric acid and carbon reductant is exposed to microwaves at a power level sufficient to heat the mixture to a temperature at which phosphorous is produced. This method can be carried out at lower temperatures than conventional phosphorous production and does not give rise to the solid waste normally formed in conventional phosphorous production. The phosphorus thus formed can be converted back to phosphoric acid, thus effecting purification of the phosphoric acid.

Method of preparing phosphorus

Formcoke is produced by introducing feedstocks of calcined coal particles, bituminous binder, an aqueous carbohydrate and phosphoric acid into a mixing zone. The resulting mixture is compacted into shapes, such as briquettes, which are then cured in an oxygen-containing atmosphere and optionally heated to coking temperatures.

Formcoke having modified bituminous binder

Formcoke is produced by separately introducing feedstocks of calcined coal particles, bituminous binder and a carbohydrate, preferably an aqueous sugar, into a mixing zone. The resulting mixture is compacted into shapes, such as briquettes, which are then cured in an oxygen-containing atmosphere and optionally heated to coking temperatures.

Growing community of inventors

Kemmerer, WY, United States of America

Richard R Severns