EP 0119685 B1 19880803 - HYDROMETALLURGICAL ARSENOPYRITE PROCESS
Title (en)
HYDROMETALLURGICAL ARSENOPYRITE PROCESS
Publication
Application
Priority
US 45884683 A 19830118
Abstract (en)
[origin: EP0119685A1] A process for the hydrometallurgical recovery of gold from arsenical pyrite concentrate. The process comprises decomposing the concentrate by using a leach composed of higher valence nitrogen oxides present in acidic solution; subjecting the decomposed product to a solid-liquid separation to produce a residue and a liquid fraction; recovering gold from the residue by conventional means; and precipitating dissolved arsenic, iron and sulphur from the liquid fraction before recycling the liquid fraction in the process.
IPC 1-7
IPC 8 full level
C22B 11/00 (2006.01); C22B 11/06 (2006.01); C22B 11/08 (2006.01)
CPC (source: EP)
C22B 11/04 (2013.01); C22B 11/06 (2013.01); C22B 11/08 (2013.01)
Designated contracting state (EPC)
BE DE FR GB LU NL SE
DOCDB simple family (publication)
EP 0119685 A1 19840926; EP 0119685 B1 19880803; AU 2351584 A 19840719; AU 566135 B2 19871008; CA 1219132 A 19870317; DE 3473163 D1 19880908; ZA 84153 B 19850424
DOCDB simple family (application)
EP 84300292 A 19840118; AU 2351584 A 19840116; CA 443728 A 19831220; DE 3473163 T 19840118; ZA 84153 A 19840109