INTEGRATED PROCESS OF TREATMENT OF BATCHES SOLD OUT OF THE GALVANIZATION INDUSTRY WITH RECOVERY OF FERRIC CHLORIDE AND ZINC CARBONATE

摘要

The present invention relates to an integrated process and to equipment for the treatment of baths drawn from the galvanizing industry with recovery of ferric chloride and zinc carbonate. THE INTEGRATED PROCESS OF TREATMENT OF THE BATCHES SOLD OUT OF THE GALVANIZATION INDUSTRY CONTEMPLATES STAGES OF: PRE-TREATMENT OF THE EFFLUENT, LIQUID-LIQUID EXTRACTION OF ZINC AND CHLORIDINE ACID, REMOVAL OF NICKEL BY IONIC EXCHANGE, CHEMICAL PRECIPITATION, FLOCULATION, CEMENTATION, CHLORINATION, FILTRATION AND THERMAL DEHYDRATION. The present invention presents as final products ferric chloride and basic zinc carbonate. THIS INTEGRATED PROCESS OF TREATMENT OF SOLID CHLORIDINE BATCHES WITH RECOVERY OF BASIC ZINC BASIC CARBONATE AND BASIC CARBONATE APPLIES TO THE INDUSTRY OF METALLURGICAL AND METAL SURFACE TREATMENT THAT USE CHLORIDINE ACID BATHS TO DECAPE METAL PARTS.