Liquid-liquid extraction is a complex separation process in which the components are extracted from the feed stream with the help of an extractant, or solvent. The components to be extracted have a different solubility in the two immiscible, or partially miscible, liquids. Both liquids have to be thoroughly contacted and subsequently separated. The liquids flow counter-currently and the required purity and yield determines the number of separation stages. In the field of liquid-liquid extraction, Sulzer Chemtech’s range of equipment covers many industrial applications and is based on a number of modern and more efficient types of extractors.