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IMPROVING EFFICIENCY OF THE SHAHRE-BABAK COPPER COMPLEX DEEP CONETHICKENERS
By A R Hasankhoei, M Yahyaei, A Mahdavi, S Banisi
Published in International Mineral Processing Congress (IMPC) at 2012
Direct link: http://kmpchemmat.ir/pii/41374

Abstract
Water recycling is of prime importance in mineral processing due to consumption of a large amount of water. This issue is vital in areas with low rainfall such as Shahre-Babak (Kerman, Iran). Deep cone thickeners, unlike conventional thickeners, have a low diameter to height ratio where large amounts of flocculants are used to increase particle settling rates. The high bed heights (over 10 m) produce enough pressure to create a paste type underflow indicating maximum water recovery. Flocculent preparation, conditioning, and distribution along with bed height are among important factors affecting performance. Four deep cones are used to recover water from tailings of the plant. Plant data indicated that thickener never reached target underflow percent solids (63%) and average underflow concentrations were between 49 and 57%. By modification and optimization of flocculent preparation and distribution methods, underflow percent solids increased by 3-4%. This translated to an increase of water recovery from 67 to 73%. This was equivalent to 53000 m3 saving in monthly water consumption.

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	All Years to Access Full-Text Export citations IMPROVING EFFICIENCY OF THE SHAHRE-BABAK COPPER COMPLEX DEEP CONETHICKENERS By A R Hasankhoei, M Yahyaei, A Mahdavi, S Banisi Published in International Mineral Processing Congress (IMPC) at 2012 Direct link: http://kmpchemmat.ir/pii/41374 Abstract Water recycling is of prime importance in mineral processing due to consumption of a large amount of water. This issue is vital in areas with low rainfall such as Shahre-Babak (Kerman, Iran). Deep cone thickeners, unlike conventional thickeners, have a low diameter to height ratio where large amounts of flocculants are used to increase particle settling rates. The high bed heights (over 10 m) produce enough pressure to create a paste type underflow indicating maximum water recovery. Flocculent preparation, conditioning, and distribution along with bed height are among important factors affecting performance. Four deep cones are used to recover water from tailings of the plant. Plant data indicated that thickener never reached target underflow percent solids (63%) and average underflow concentrations were between 49 and 57%. By modification and optimization of flocculent preparation and distribution methods, underflow percent solids increased by 3-4%. This translated to an increase of water recovery from 67 to 73%. This was equivalent to 53000 m3 saving in monthly water consumption.