Introduction The literature pertaining to (3) was reviewed by
Sobieraj and Farmer [2]. An application of power
This paper focuses on the application of ultrasound ultrasound to the flotation of barytes (a barium sulphate
to the cleaning of silica sand and of heavy mineral sand mineral ) was presented by Farmer [3]. Applications of
concentrates. The use of power ultrasound in the clean- the type (1) and (2) will be discussed here.
ing of surfaces of manufactured objects is well known
[1]. Less well known is its application to cleaning the
surfaces of fine mineral suspensions. Some of the reasons
for cleaning mineral surfaces are: