Affordable Access

Publisher Website

Coagulation of red mud suspensions with an inorganic coagulant

Authors
Journal
Powder Technology
0032-5910
Publisher
Elsevier
Publication Date
Volume
54
Issue
1
Identifiers
DOI: 10.1016/0032-5910(88)80045-7

Abstract

Abstract This paper deals with the coagulation of red mud (a waste product from the Bayer process to produce alumina) in water with an inorganic coagulant (FeCl 3·6H 2O). The coagulative state is evaluated by measuring the transmittance of supernatant liquid and/ or the specific volume of the sediment in suspensions after standing for 24 h. It is found that the most important factor in coagulating red mud is maintaining the pH of solutions in suspensions within the range of 7 to 8 regardless of red mud concentration, because the zeta potential of red mud in this pH range is less than approximately |13| mV, which is already known as the potential range necessary to coagulate fine particles in general.

There are no comments yet on this publication. Be the first to share your thoughts.