Date of Award


Degree Name

Bachelor of Science


Paper Science and Engineering


The object of this thesis is to determine whether flotation will succeed as a method of separating shot from mineral wool fibers. The methods of manufacturing mineral wool are explored in detail. Also the three types of mineral wool (dark wool, white wool and ceramic fiber) are examined for properties. Various current and possible methods of separation are explored and discussed. The fibers were floated in a Voith flotation cell, and the floated fibers, as well as some of the virgin fibers, were classified in a Clark classifier. This was done in order to attempt to determine the effect of the process on the fiber length of the fibers. It was not possible to determine much about the feasibility of the process, but the process does work for separating shot from fibers. The thesis also lays down a lot of groundwork from which further work may be suggested.