scholarly journals Buffering of pulp pH and its influence on process water chemistry during iron ore flotation

2021 ◽  
Vol 57 (4) ◽  
pp. 157-167
Author(s):  
Min tang ◽  
Qingfei Xiao
Keyword(s):  
Water Chemistry ◽  
Iron Ore ◽  
Process Water

scholarly journals Probing the Effect of Water Recycling on Flotation through Anion Spiking Using a Low-Grade Cu–Ni–PGM Ore: The Effect of NO3−, SO42− and S2O32−

Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 340
Author(s):  
Mathew Dzingai ◽  
Malibongwe S. Manono ◽  
Kirsten C. Corin
Keyword(s):  
Water Chemistry ◽  
Froth Flotation ◽  
Water Source ◽  
Threshold Concentration ◽  
Process Water ◽  
Low Grade ◽  
Unit Operations ◽  
Flotation Performance ◽  
Anion Distribution ◽  
Nickel Grade

Water scarcity necessitates the recycling of process water within mineral processing practices. This may however come with its disadvantages for unit operations such as froth flotation as this process is water intensive and sensitive to water chemistry. It is therefore important to monitor the water chemistry of the recycle stream of process water and any other water source to flotation. Monitoring the concentrations of the anions in recycled process water is therefore important to consider as these are speculated to impact flotation performance. Batch flotation tests were conducted using synthetically prepared plant water (3 SPW) with a TDS of 3069 mg/L as the baseline experiment. 3 SPW contained 528 mg/LNO3− and 720 mg/L SO42−, other anions and cations, and no S2O32−. Upon spiking 3 SPW with selected anions, viz, NO3−, SO42− and S2O32−, it was noted that NO3− and SO42− exhibited threshold concentrations while S2O32− did not show a threshold concentration for both copper and nickel grade. Spiking 3 SPW with 352 mg/L more of NO3− to a total 880 mg/L NO3− concentration resulted in the highest copper and nickel grade compared to 3 SPW while increasing the S2O32− from 60 to 78 mg/L increased nickel and copper grade. 720 to 1200 mg/L SO42− and 528 to 880 mg/L NO3− were deemed the concentration boundaries within which lies the threshold concentration above which flotation performance declines with respect to metal grades, while for S2O32− the threshold concentration lies outside the range considered for this study. Anion distribution between the pulp and the froth did not seem to impact the recovery of copper or nickel. Notably, the correlation between the concentrate grades and anion distribution between the froth and the pulp seemed to be ion dependent.

WATER CHEMISTRY EFFECTS IN IRON ORE CONCENTRATE AGGLOMERATION FEED

2005 ◽  
Vol 26 (3-4) ◽  
pp. 295-305 ◽  
Author(s):  
T. C. Eisele ◽  
S. K. Kawatra ◽  
S. J. Ripke
Keyword(s):  
Water Chemistry ◽  
Iron Ore ◽  
Iron Ore Concentrate

Effect of process water chemistry and particulate mineralogy on model oilsands separation using a warm slurry extraction process simulation

Fuel ◽  
2008 ◽  
Vol 87 (7) ◽  
pp. 1394-1412 ◽  
Author(s):  
S. Wik ◽  
B.D. Sparks ◽  
S. Ng ◽  
Y. Tu ◽  
Z. Li ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Process Simulation ◽  
Extraction Process ◽  
Process Water

Effect of bitumen composition and process water chemistry on model oilsands separation using a warm slurry extraction process simulation

Fuel ◽  
2008 ◽  
Vol 87 (7) ◽  
pp. 1413-1421 ◽  
Author(s):  
S. Wik ◽  
B.D. Sparks ◽  
S. Ng ◽  
Y. Tu ◽  
Z. Li ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Process Simulation ◽  
Extraction Process ◽  
Process Water

Bitumen recovery from model systems using a warm slurry extraction process: effects of oilsands components and process water chemistry

Fuel ◽  
2004 ◽  
Vol 83 (14-15) ◽  
pp. 1865-1880 ◽  
Author(s):  
Nelson Fong ◽  
Samson Ng ◽  
Keng H. Chung ◽  
Yun Tu ◽  
Zaifeng Li ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Extraction Process ◽  
Model Systems ◽  
Process Water ◽  
Process Effects ◽  
Bitumen Recovery

scholarly journals Treatment and Recycling of the Process Water in Iron Ore Flotation of Yuanjiacun Iron Mine

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Wen-li Jiang ◽  
Hai-feng Xu
Keyword(s):  
Sodium Hypochlorite ◽  
Iron Ore ◽  
Process Water ◽  
Iron Recovery ◽  
Oxidation Treatment ◽  
Flotation Recovery ◽  
Diallyldimethylammonium Chloride ◽  
Iron Mine ◽  
Settling Performance ◽  
Better Than

Coagulating sedimentation and oxidation treatment of process water in iron ore flotation of Yuanjiacun iron mine had been studied. The process water of this mine carried residual polyacrylamide (PAM), poly(diallyldimethylammonium chloride) (PDADMAC), and Ca2+ from the flotation and caused decrease of the iron flotation recovery or grade of the concentrate. The studies on high-intensity magnetic separation (HIMS) tailings for coagulating sedimentation showed that the settling performance of coagulant (named CYH) was better than that of PDADMAC. The analyses of FTIR spectra and zeta potential demonstrated that CYH is adsorbed mainly through electrostatic attraction onto HIMS tailings. Sodium hypochlorite was adopted to oxidize the residual organics in tailings wastewater. When sodium hypochlorite is at the dosage of 1.0 g/L, reaction temperature is of 20°C, and reaction time is of 30 minutes, the removal rates of PAM, COD, and Ca2+ were 90.48%, 83.97%, and 85.00%, respectively. Bench-scale flotation studies on the treated tailings wastewater indicated that the iron recovery and grade of concentrate were close to those of freshwater.

The influence of process water chemistry on coal thermoplastic properties

2019 ◽  
Vol 345 ◽  
pp. 468-477 ◽  
Author(s):  
Feng Zhang ◽  
Ghislain Bournival ◽  
Seher Ata
Keyword(s):  
Water Chemistry ◽  
Process Water ◽  
Thermoplastic Properties
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