Development of online soft sensors and dynamic fundamental model-based process monitoring for complex sulfide ore flotation

2018 ◽  
Vol 124 ◽  
pp. 10-27 ◽  
Author(s):  
Khushaal Popli ◽  
Artin Afacan ◽  
Qi Liu ◽  
Vinay Prasad
Keyword(s):  
Process Monitoring ◽  
Soft Sensors ◽  
Fundamental Model ◽  
Model Based ◽  
Complex Sulfide ◽  
Sulfide Ore

Model-based process monitoring using robust generalized linear models

2005 ◽  
Vol 43 (7) ◽  
pp. 1337-1354 ◽  
Author(s):  
D. Jearkpaporn ◽  
D. C. Montgomery * ◽  
G. C. Runger ◽  
C. M. Borror
Keyword(s):  
Process Monitoring ◽  
Generalized Linear Models ◽  
Linear Models ◽  
Model Based

Metal Mobilization from Complex Sulfide Ore Concentrate: Effect of Light and pH

2004 ◽  
Vol 57 (10) ◽  
pp. 971 ◽  
Author(s):  
Jeffrey J. Tsang ◽  
David L. Parry
Keyword(s):  
Metal Sulfides ◽  
Metal Mobilization ◽  
Exchange Reactions ◽  
Complex Sulfide ◽  
Sulfide Ore ◽  
Decreasing Ph ◽  
Effect Of Light

The aim of this study was to determine the influence of photo-irradiation and pH on the mobilization of metals from a complex sulfide ore concentrate containing known semiconductors (PbS, ZnS, CdS, FeS2, and CuFeS2). The mobilization of Zn, Fe, and Cd increased under illumination, which is attributed to the semiconductor nature of ZnS, FeS2, and CdS, respectively. An increase in mobilization of Zn, Fe, and Cd under light is observed with decreasing pH, because of increased surface protonation and the greater oxidizing property of photoholes. The semiconductor nature of PbS and CuFeS2 is observed at pH 2. However, at higher pH the concentrations of mobilized Pb and Cu are greater in darkness than under illumination. This is attributed to the light enhanced exchange reactions involving dissolved Pb and Cu with metal sulfides more soluble than PbS and CuS.

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