EP 0006832 A1 19800109 - A method of refining crude lead.
Title (en)
A method of refining crude lead.
Title (de)
Verfahren zum Reinigen von Rohblei.
Title (fr)
Procédé pour le raffinage de plomb brut.
Publication
Application
Priority
SE 7807358 A 19780629
Abstract (en)
A method of refining crude lead from copper-containing lead raw-materials which possibly also contain arsenic and which are of a metallic, oxidic, sulphatic or sulphidic type, in a furnace in which the contents thereof can be subjected to turbulence, preferably in a top blown rotary converter, for example, of the Kaldotype. According to the invention, subsequent to chemical reduction and tapping-off of the slag, the crudelead melt is cooled to a temperature beneath about 700 DEG C whilst strongly agitating said melt, in order to separate out a copper phase or a copper speiss. The coolant used may be an oxidic or sulphatic lead raw-material, a crushed iron-silicate slag, a slag former, and, preferably, water in liquid finely-divided form, Large quantities of arsenic can be removed prior to said cooling, by forming an iron speiss, by adding iron to the crude-lead melt or forming iron in situ therewith.
IPC 1-7
IPC 8 full level
C22B 13/06 (2006.01)
CPC (source: EP)
C22B 13/06 (2013.01)
Citation (search report)
- SE 7317219 A
- SE 7317217 A
- DE 2459756 B2 19770331
- DE 2459832 B2 19780202
- DE 1189279 B 19650318 - BREVETS METALLURGIQUES
- US 3666441 A 19720530 - MILNER GEOFFREY
- DE 1174511 B 19640723 - BROKEN HILL ASS SMELTER
- DE 1199003 B 19650819 - METALLGESELLSCHAFT AG
Designated contracting state (EPC)
AT BE CH DE FR GB IT LU NL
DOCDB simple family (publication)
EP 0006832 A1 19800109; DK 271579 A 19791230; FI 792061 A 19791230; NO 792175 L 19800103; PL 117460 B1 19810831; PL 216722 A1 19800324; SE 413105 B 19800414; SE 7807358 L 19791230
DOCDB simple family (application)
EP 79850059 A 19790615; DK 271579 A 19790627; FI 792061 A 19790629; NO 792175 A 19790628; PL 21672279 A 19790629; SE 7807358 A 19780629