TITLE:
Selection of Stainless Steel for Cathode Plate in Hydrometallurgical Process
AUTHORS:
Chi Zhang, Junyi Wu
KEYWORDS:
Mining, Pitting Corrosion, Cathode Plate, Hydrometallurgy, Copper Refining
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.3 No.3C,
October
24,
2015
ABSTRACT: Recently, the hydrometallurgy for metal
refining is getting more and more popularin China. During a traditional hydrometallurgical
process sulphuric acid is often used. In many cases, the working conditions in
the solvent extraction and electro winning processes could be very tough for
the commonly used material of different equipment and components, such as,
austenitic stainless steels of 304/304L and 316L. In a copper refinery, a
permanent cathode plate made of 316L was taken out of production due to heavy
corrosion. The samples from the corroded plate were investigated thoroughly,
possible reasons were pointed out and new material was suggested in this work.
It is expected this research could help the copper refineries and Sanmen Sanyou
to select the proper cathode plates in complicated working conditions.