Characterizing the Role of Organic Additives in Copper Electrowinning

فصل «Characterizing the Role of Organic Additives in Copper Electrowinning» از کتاب «The Minerals, Metals & Materials Series» بر «استخراج حلالی مس» در حوزه «متالورژی مس» تمرکز دارد. مباحث اصلی آن شامل استخراج حلالی و الکترووینینگ است. این فصل برای انتخاب فرایند، طراحی واحد، تحلیل بهره‌برداری و رفع عیب در استخراج و پالایش مس کاربرد دارد و ارتباط میان نظریه، انتخاب روش، شاخص‌های عملکرد و محدودیت‌های صنعتی را روشن می‌کند.

Additives are commonly used in copper electrowinning to improve cathode morphology. Polysaccharides such as guar are generally favoured as additives due to their compatibility with solvent extraction. Understanding the influence of the structural chemistry of additives on electrowinning performance is critical to utilise them efficiently. This paper investigated polyacrylamide additives which are structurally different their effects on copper electrodeposition were characterized and compared to that of guar. Electrochemical impedance spectroscopy (EIS) were used to characterize the effects of molecular weight and ionic charge of the polyacrylamides on electrodeposition.