Purification treatment process of an acid pickling bath used steel substrates.

摘要

This invention relates to a method of treating purification BATHROOM acid used pickling steel substrates, CONTAINING iron ions, making debugging by separation of the compounds contained in said bath and, in particular, silicon compounds , aluminum or chrome. THIS PROCEDURE IN WHICH enters the pickling bath a metal or metal alloy, neutralize the free acidity of the bath and the precipitated solids in the bathroom, is characterized according to the invention FILTRAN, that steel is added BATH USED ARE neutralizes acidity pickling bath by stirring CITED bath under NEUTRAL GAS ATMOSPHERE, THE DECREASE OF ACID BATH IS CONTROLLED, AND THE BATHROOM WHEN INGRESS has reached a certain acidity.