METHOD FOR DECAPING PRODUCTS OF A METALLIC ALLOY, IN THE ABSENCE OF NITRIC ACID, AND FOR THE RECOVERY OF SOLD OUT SOLUTIONS FROM DECAPING, AND APPLIANCES FOR IT.

摘要

THE INVENTION REFERS TO THE DECAPING OF PRODUCTS BASED ON A METAL ALLOY CONTAINING IRON, AND TO TITANIUM PRODUCTS AND ALLOYS OF THE SAME, IN THE ABSENCE OF NITRIC ACID AS AN OXIDIZING AGENT. THIS PROCEDURE IS INTENDED TO ASSUME THE RECOVERY OF SOLDED SOLUTIONS, AND IT IS CHARACTERIZED BECAUSE THE RECOVERY OF SOLDED SOLUTIONS DERIVED FROM THE DECAPING UNDERSTANDS THE FOLLOWING PHASES: SEND THE DECAPING SOLUTION, AS A CATHOLIT AND AS A MEMORY OF A TYPE , TO SEPARATE THE IONS FE 2 (OR IT 2) THAT WILL BE DELETED, FROM THE IONS FAITH SUP, 3 + (OR IT 3+) DESTINED TO BE RECOVERED, OBTAINED BY REDUCTION IN THE CATOMO OF THE IONS FE 3 + THAT ARE IN THE CATHOLIT, TO IONS FAITH 2+ (OR OF THE IONS TI 3+ AND IT 4+ IN IONS IT 2+), AND BY OXIDATION IN THE IODE OF IONS FAITH 2+ OR IT 2+ THAT ARE IN THE ANOLITO, A FE 3+ (TO YOU 3+ AND TO YOU 4+); TREAT THE CATHOLITIC SOLUTION THAT COMES OUT OF THE CELL, ENRICHED IN IONS FE2 + (OR TI 2+), TO ALLOW SEPARATION IN TWO PHAS IS, A FIRST PHASE THAT CONTAINS METAL CATIONS FE SUP, 2 +, CR 3+, NI 2 + (OR TI 2+) THAT THEY WANT TO ELI MINAR AND A SECOND PHASE DISPROVISED OF THESE METAL CATIONS, WHICH IS FORWARDED TO THE BATH OF DECAPADO; AND SEND THE ANOLYTE SOLUTION THAT COMES OUT OF THE CELL AND ENRICHED IN IONS FAITH 3+ (OR IT 3+ AND IT 4+), TO THE DECAPADO BATH. THE INVENTION REFERS ALSO TO AN APPLIANCE TO THE EFFECT.