WILLIAM H JOHNSON
Vehicle Board in Yardley, PA
License number
Pennsylvania MV000847L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Yardley, PA 19067
Professional information
Method For Treating Tailing Slurries With Caro's Acid
US Patent:
6090297, Jul 18, 2000
Filed:
Jul 30, 1997
Appl. No.:
8/903180
Inventors:
Harry M. Castrantas - Newtown PA
James L. Manganaro - Princeton NJ
Ralph S. Mikida - West Seneca NY
William Johnson - Yardley PA
James L. Manganaro - Princeton NJ
Ralph S. Mikida - West Seneca NY
William Johnson - Yardley PA
Assignee:
FMC Corporation - Philadelphia PA
International Classification:
C02F 172, C01B 1506
US Classification:
210759
Abstract:
A process for treating precious metal tailing slurries with Caro's acid, in which the Caro's acid is accompanied by reduced amounts of Caro's acid mist, is disclosed. The hot Caro's acid-containing mixture, formed by reaction of concentrated sulfuric acid and hydrogen peroxide, is quenched with water to reduce or eliminate the Caro's acid mist. The resulting cooled and diluted mixture is introduced into a precious metal tailings slurry to reduce the amount of cyanide values in the slurry.
Method For Producing Caro's Acid
US Patent:
5879653, Mar 9, 1999
Filed:
Nov 4, 1997
Appl. No.:
8/963745
Inventors:
Harry M. Castrantas - Newtown PA
James L. Manganaro - Princeton NJ
Ralph J. Mikida - Seneca NY
William Johnson - Yardley PA
James L. Manganaro - Princeton NJ
Ralph J. Mikida - Seneca NY
William Johnson - Yardley PA
Assignee:
FMC Corporation - Philadelphia PA
International Classification:
C01B 1506
US Classification:
423513
Abstract:
A process for reducing or eliminating Caro's acid mist, created when producing a hot mixture containing Caro's acid by reaction of sulfuric acid and hydrogen peroxide, is carried out by quenching the hot Caro's acid mixture with water to both cool and dilute the Caro's acid.