EP 0171845 B1 19880921 - PROCESS AND APPARATUS FOR THE CONTINUOUS PYROMETALLURGICAL TREATMENT OF A COPPER-LEAD MATTE
Title (en)
PROCESS AND APPARATUS FOR THE CONTINUOUS PYROMETALLURGICAL TREATMENT OF A COPPER-LEAD MATTE
Publication
Application
Priority
DE 3429972 A 19840816
Abstract (en)
[origin: US4614541A] A method for the continuous pyrometallurgical processing of copper-lead matte having a high lead content relative to copper. In order to ensure an economical and ecologically satisfactory processing, the following steps are performed in a continuous sequence: (a) In one processing stage a suitable atmosphere is provided and temperatures above 1250 DEG C. and a high turbulence are maintained in a molten bath, volatile lead components are incorporated in a fine dust and liquid matte having a decreased lead content and metallic lead included in a copper-containing lead alloy are produced; (b) in another processing stage, gases which contain free oxygen are blown into or onto the liquid matte which has been produced in stage (a) and is at a temperature above 1250 DEG C. whereby a high-oxygen converter slag and a converter copper containing less than 1% by weight lead are produced and volatilizable impurities contained in the matte are incorporated in a fine dust; and (c) in a third processing stage the converter copper, which contains less than 1% by weight Pb and other impurities, such as Ni, As, Sb, is refined in that a gas which contains free oxygen is blown into or onto the molten bath. The impurities are slagged by a selective oxidation, and a prerefined copper is formed.
IPC 1-7
IPC 8 full level
C22B 13/02 (2006.01); C22B 15/00 (2006.01); C22B 15/06 (2006.01); C22B 15/14 (2006.01)
CPC (source: EP US)
C22B 15/0041 (2013.01 - EP US); C22B 15/006 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0171845 A1 19860219; EP 0171845 B1 19880921; AU 4624085 A 19860220; AU 568280 B2 19871217; DD 238398 A5 19860820; DE 3429972 A1 19860227; DE 3565125 D1 19881027; FI 78506 B 19890428; FI 78506 C 19890810; FI 852316 A0 19850611; FI 852316 L 19860217; JP S6156258 A 19860320; PL 140608 B2 19870530; PL 254667 A2 19860617; US 4614541 A 19860930; YU 108585 A 19880229
DOCDB simple family (application)
EP 85201189 A 19850713; AU 4624085 A 19850815; DD 27963485 A 19850813; DE 3429972 A 19840816; DE 3565125 T 19850713; FI 852316 A 19850611; JP 17924685 A 19850814; PL 25466785 A 19850724; US 76675685 A 19850816; YU 108585 A 19850628