Electrochemical polarisation techniques can be successively applied to maintain clean surfaces in process environments. The applications are the result of extensive knowledge of the electrochemical nature of process environments, an innovative approach to problem solving and shared can do' attitudes between the supplier and process owner. Initial identification of suitable applications is based on over 20 years of process and electrochemical experience. The technologies discussed in this paper include Electrochemical Anti-Scaling [EAS], Electrochemical Protection Systems with both anodic [EPSA] and cathodic [EPSC] protection and Electrochemical Flocculation [EF]. Examples of industrial applications are reviewed._x000D_
Good examples of metallurgical processes which can benefit greatly from an advanced electrochemical treatment are the wet processes involving precipitation, crystallisation and evaporation. Eliminating corrosion and scaling which would otherwise cause process disruptions and quality problems can make a big difference in process profitability. Clear advantages in both cost efficiency and environment friendliness are easily demonstrated. Continuous processing with minimum downtime is one clear advantage. In comparison to the use of corrosion inhibitors, anti-scaling agents and flocculants, the electrochemical polarisation does not increase the environmental load from the process as no additives of any kind are used. In most cases the cost benefits from pro-actively keeping surfaces clean with the help of advanced electrochemistry are substantial when compared to traditional re-active methods and other active treatments._x000D_
FORMAL CITATION:Eskelinen, P, Ortiz, P, Totsuka, S and Prokkola, E, 2004._x000D_
Electrochemical polarisation technologies and services, in Proceedings Metallurgical Plant Design and Operating Strategies 2004, pp 365-374 (The Australasian Institute of Mining and Metallurgy: Melbourne).