Arsenic is one of the most dangerous inorganic pollutants and thus a penalty element in many base metal
concentrates. Arsenic removal in sulphide flotation has been studied extensively with various approaches,
including pre-oxidation of flotation pulp, Eh control during flotation and the use of selective depressants/
collectors. Pre-oxidation of flotation pulp using oxidizing agents or aeration conditioning represents a simple
approach in arsenic removal and was found effective in many cases. Selective flotation of arsenic minerals
through Eh control has made significant advances in recent years with promising results achieved. In
addition, various depressants and collectors have also been studied in arsenic removal. In this
communication, the various approaches used in selective flotation of arsenic minerals are reviewed with
emphasis on the development in recent years.