EP 0119685 A1 19840926 - Hydrometallurgical arsenopyrite process.
Title (en)
Hydrometallurgical arsenopyrite process.
Title (de)
Verfahren zur nassmetallurgischen Behandlung von Arsenopyriten.
Title (fr)
Procédé hydrométallurgique pour traiter des arsénopyrites.
Publication
Application
Priority
US 45884683 A 19830118
Abstract (en)
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)
Citation (search report)
- US 2805936 A 19570910 - SCHAUFELBERGER FELIX A
- DE 744120 C 19440110 - AUREL BOGNAR DR
- US 2805940 A 19570910 - OLUF BENNEDSEN HANS
- FR 1058809 A 19540319 - CHEMICAL CONSTRUCTION CORP
- US 2951741 A 19600906 - SILL HARLEY A
- US 3793429 A 19740219 - QUENEAU P, et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI 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