NIOSHTIC-2 Publications Search

Cyanide leaching method for recovering platinum group metals from a catalytic converter catalyst.

Authors
Atkinson GB; Kuczynski RJ; Desmond DP
Source
US Pat 5,160,711 1992 Nov; :1-4
NIOSHTIC No.
10011625
Abstract
A method for recovering platinum group metals from a catalyst material comprises leaching the material with a cyanide solution at a temperature greater than about 100 degrees C. to form soluble platinum group metal-cyanide complexes in solution. Solids are removed from the resulting pregnant leach solution, and the pregnant leach solution is then heated to a temperature sufficient to decompose the platinum group metal-cyanide complexes and precipitate the platinum group metals.
Keywords
Cyanides; Platinum; Metallurgical processes; Metallurgy; Metals
CAS No.
7440-06-4
Publication Date
19921103
Document Type
Patent
Fiscal Year
1993
Identifying No.
PA 5,160,711
NIOSH Division
RERC
Source Name
United States Patent 5,160,711
State
NV
Page last reviewed: June 16, 2022
Content source: National Institute for Occupational Safety and Health Education and Information Division