Global Patent Index - EP 0506000 A3

EP 0506000 A3 19930224 - APPARATUS FOR CHEMICAL TREATMENT OF METAL

Title (en)

APPARATUS FOR CHEMICAL TREATMENT OF METAL

Publication

EP 0506000 A3 19930224 (DE)

Application

EP 92105107 A 19920325

Priority

DE 4110423 A 19910329

Abstract (en)

[origin: EP0506000A2] An apparatus for chemical treatment of metal, in particular for pickling or etching raw metallic products and semifinished and finished products, in which the flow of the chemicals and rinsing water used is designed so as to result in a circulatory system without effluent water or waste, is characterised by a pretreatment station (1) in which coarse scale, rust and other oxide layers are removed from the metal surface, a metal treatment station (3) in which the metallic product to be treated is processed chemically, in particular etched or pickled, by means of iron(III) chloride solution and the desired processing finish is achieved, a regeneration plant (4) in which the iron chloride solution used in the metal treatment station is chemically or, in particular, electrochemically regenerated without residue, a rinsing station (6) in which the chemicals used to treat the product chemically are removed without residue from its surface, and a rinsing water concentrating system (7) in which the concentration of the chemicals rinsed off is increased to the desired specified value. <IMAGE>

IPC 1-7

C23G 1/36; C23F 1/46; C23G 3/00; C23F 1/08

IPC 8 full level

C23F 1/08 (2006.01); C23F 1/46 (2006.01); C23G 1/36 (2006.01); C23G 3/00 (2006.01)

CPC (source: EP)

C23F 1/08 (2013.01); C23F 1/46 (2013.01); C23G 1/36 (2013.01); C23G 3/00 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT DE DK FR GB IT SE

DOCDB simple family (publication)

EP 0506000 A2 19920930; EP 0506000 A3 19930224; DE 4110423 A1 19921001

DOCDB simple family (application)

EP 92105107 A 19920325; DE 4110423 A 19910329