Christopher J Knapp

US Patent:

6444130, Sep 3, 2002

Filed:

Oct 30, 2000

Appl. No.:

09/699762

Inventors:

James L. Manganaro - Princeton NJ
Henry A. Pfeffer - Mercerville NJ
Jay R. Brummer - Pocatello ID
Bert D. McMunn - Naples FL
Christopher M. Knapp - Wausau WI
William M. Copa - Schofield WI

Assignee:

FMC Properties,LLC. - Philadelphia PA

International Classification:

C02F 102

US Classification:

210750, 210761, 210766, 210806, 210906, 210912

Abstract:

The invention is a process for treating waste slurry generated in the electric furnace production of phosphorus in which a superatmospheric reactor is operated at an elevated temperature to destroy cyanides, phosphorus, and phosphides present in the waste. The process transforms wastes from the phosphorus electric furnace process into non-hazardous solid, liquid, and gaseous wastes that meet environmental regulatory requirements regarding solids for phosphorous, cyanide, phosphine and cyanide flux, and TCLP metals, and regarding the filtrate for UTS metals.