Selective Flocculation of Chrysocolla Fines with Anionic Polyacrylamide/Acrylate Polymer

1990 ◽  
pp. 285-297
Author(s):  
Y. Ye ◽  
M. C. Fuerstenau
Keyword(s):  
Selective Flocculation ◽  
Acrylate Polymer ◽  
Anionic Polyacrylamide

scholarly journals Silylated Thiol-Containing Cellulose Nanofibers as a Bio-Based Flocculation Agent for Ultrafine Mineral Particles of Chalcopyrite and Pyrite

2021 ◽  
Author(s):  
Ana Luiza Coelho Braga de Carvalho ◽  
Feliciana Ludovici ◽  
Daniel Goldmann ◽  
André Carlos Silva ◽  
Henrikki Liimatainen
Keyword(s):  
Ultrafine Particles ◽  
Fine Particles ◽  
Cellulose Nanofibers ◽  
Aqueous Alkaline Medium ◽  
Selective Flocculation ◽  
Turbidity Removal ◽  
Floc Size ◽  
Mineral Particles ◽  
Tailing Ponds ◽  
Anionic Polyacrylamide

AbstractA considerable amount of very fine particles can be found, e.g., stored in tailing ponds, and they can include valuable or hazardous minerals that have the potential to be recovered. Selective flocculation, i.e., the formation of larger aggregates from specific minerals, offers a promising approach to improve the recovery of ultrafine particles. This study focuses on the use of a new bio-based flocculation agent made of silylated cellulose nanofibers containing a thiol-functional moiety (SiCNF). Flocculation was performed in separated systems of ultrafine mineral dispersions of pyrite, chalcopyrite, and quartz in aqueous alkaline medium. The flocculation performance of SiCNF was addressed in terms of the turbidity reduction of mineral dispersions and the floc size, and the results were compared with the performance of a commercial anionic polyacrylamide. SiCNF exhibited a turbidity removal efficiency of approximately 90%–99% at a concentration of 4000–8000 ppm with chalcopyrite and pyrite, whereas the turbidity removal of quartz suspension was significantly lower (a maximum of approximately 30%). The sulfide particles formed flocs with a size of several hundreds of micrometers. The quartz in turn did not form any visible flocs, and the dispersion still had a milky appearance after dosing 12,000 ppm of the flocculant. These results open a promising path for the investigation of SiCNF as a selective flocculation agent for sulfide minerals. Graphical Abstract

Selective flocculation applied to Barsuan iron ore tailings

1985 ◽  
Vol 14 (1) ◽  
pp. 67-75 ◽  
Author(s):  
K. Hanumantha Rao ◽  
K.S. Narasimhan
Keyword(s):  
Iron Ore ◽  
Selective Flocculation ◽  
Iron Ore Tailings

Stabilization Effect of Anionic Polyacrylamide on Marine Clay Treated with Lime

2020 ◽  
Vol 20 (6) ◽  
pp. 04020050
Author(s):  
Huayang Lei ◽  
Jinfeng Lou ◽  
Xin Li ◽  
Mingjing Jiang ◽  
Cike Tu
Keyword(s):  
Marine Clay ◽  
Stabilization Effect ◽  
Anionic Polyacrylamide

scholarly journals Silicon Nitride Capacitive Chemical Sensor for Phosphate Ion Detection Based on Copper Phthalocyanine - Acrylate-polymer

2017 ◽  
Vol 29 (6) ◽  
pp. 1586-1595 ◽  
Author(s):  
Lassaad Barhoumi ◽  
Abdoullatif Baraket ◽  
Naglaa Mohammed Nooredeen ◽  
Mounir Ben Ali ◽  
Mohammed Nooredeen Abbas ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Chemical Sensor ◽  
Copper Phthalocyanine ◽  
Ion Detection ◽  
Phosphate Ion ◽  
Acrylate Polymer

Results from a study on the biodegradation behaviour of a clariant fluorotelomer-based acrylate polymer coated on polyester and cotton fabric under landfill simulation conditions

2009 ◽  
Vol 27 (3-4) ◽  
pp. 421
Author(s):  
Volker Koch ◽  
Wolfgang Knaup ◽  
Henrich Roeper ◽  
Rainer Stegmann ◽  
Silke Fiebig ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Acrylate Polymer

Synthesis of functionalized benzenesulphonyl monomers, polymers and copolymers designed for the selective flocculation of aqueous smithsonite dispersions

1992 ◽  
Vol 28 (10) ◽  
pp. 1225-1229 ◽  
Author(s):  
V. Bertini ◽  
M. Pocci ◽  
N. Picci ◽  
A. De Munno ◽  
F. Lucchesini
Keyword(s):  
Selective Flocculation

Apatite-staffelite ore flotation efficiency improvement using two-stage slurry thickening

2022 ◽  
pp. 121-131
Author(s):  
Valery Morozov ◽  
Polivanskaya Valeriya
Keyword(s):  
Caustic Soda ◽  
Liquid Glass ◽  
Efficiency Improvement ◽  
Selective Flocculation ◽  
Two Stage ◽  
Flotation Process ◽  
Apatite Concentrate ◽  
P2o5 Content ◽  
Condensed Product ◽  
Mode A

The studies were performed suggesting that the cause of P2O5 losses during apatite-staffelite ores (ASO) treatment are due to non-selective flocculation of fine classes during flotation. When using strong flocculants, special preparation of condensed slurries is necessary, ensuring their deflocculation before the flotation process. A scheme and mode of preparation of fine classes for the flotation process have been developed, including thickening of the classification overflows using strong anionic flocculants and deflocculation of the thickened product before the flotation process with reagents-dispersants used in the basic flotation mode. A mode of preparation of slimes of ASO ores for flotation is proposed, including thickening of the discharge of the classification operation using the anionic flocculant “Praestol-2540”, conditioning of the condensed product with additions of liquid glass and caustic soda in a ratio of 1 : 1, dilution and re-thickening of deflocculated slimes, consolidation and flotation thickened sludge and sand. The big laboratory tests have shown that the application of the developed regime provides a total increase in the extraction of P2O5 from ore from 70,1 to 71,5 % with an increase in the P2O5 content in apatite concentrate from 37,1 to 37,8 %, which makes the developed technology promising for processing refractory ASO at Kovdorsky GOK.

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