Devatering of barite clay wastewater by inorganic coagulants and co-polymer flocculants
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Hitit University
Vedat Deniz   

Department of Polymer Engineering, Hitit University, Corum, Turkey
Publication date: 2015-01-01
Physicochem. Probl. Miner. Process. 2015;51(1):351–364
This work is focused on dewatering of barite-containing clay waste from a barite beneficiation plant by coagulation and flocculation to enhance the dewatering rate and recycling of process water. A flocculation performance of co-polymers (Superfloc A-130 and A-100) was compared with coagulants (Al2SO4.18H2O, CaCl2 and FeCl3.6H2O). The best results were obtained with an anionic co-polymer, i.e. Superfloc A-130. The settling rate increased 635-fold in the case of using anionic co-polymer Superfloc A-130 in comparison with the natural settling rate of the same wastewater. In laboratory tests, an optimum thickener design was developed for the barite clay wastewater. In this paper, sedimentation studies on the barite clay wastes are presented for the first time, both as the laboratory studies and industrial applications.