A Reactor System for Mineral Leaching Investigations

1980 ◽  
pp. 563-572 ◽  
Author(s):  
T. Babij ◽  
R. B. Doble ◽  
B. J. Ralph
Keyword(s):  
Reactor System ◽  
Mineral Leaching

A Reactor System for Mineral Leaching Investigations

1980 ◽  
pp. 563-572
Author(s):  
T. Babij ◽  
R. B. Doble ◽  
B. J. Ralph
Keyword(s):  
Reactor System ◽  
Mineral Leaching

scholarly journals A versatile ceramic capillary membrane reactor system for continuous enzyme‐catalyzed hydrolysis

2021 ◽  
Author(s):  
Lorn Messner ◽  
Marieke H. Antink ◽  
Tongwei Guo ◽  
Michael Maas ◽  
Sascha Beutel
Keyword(s):  
Membrane Reactor ◽  
Reactor System ◽  
Capillary Membrane

Autoheated thermophilic aerobic sludge digestion and metal bioleaching in a two-stage reactor system

2010 ◽  
Vol 22 (2) ◽  
pp. 230-236 ◽  
Author(s):  
Rohan Jain ◽  
Ashish Pathak ◽  
T.R. Sreekrishnan ◽  
M.G. Dastidar
Keyword(s):  
Reactor System ◽  
Two Stage ◽  
Sludge Digestion ◽  
Aerobic Sludge

Thermodynamic Simulation of Sulphide Mineral Leaching

2009 ◽  
Vol 71-73 ◽  
pp. 437-440
Author(s):  
Lasse Ahonen ◽  
Pauliina Nurmi ◽  
Olli H. Tuovinen
Keyword(s):  
Acid Solution ◽  
Ferric Iron ◽  
Geochemical Modeling ◽  
Thermodynamic Simulation ◽  
Sulphide Mineral ◽  
Solution Ph ◽  
Dissolved Iron ◽  
Iron Precipitation ◽  
Oxidative Leaching ◽  
Mineral Leaching

Geochemical modeling program PHREEQC was used to simulate generic bioleaching processes. Carbonate minerals (e.g., calcite) dissolve in acid solution, increasing the solution pH and Ca concentration while the concentration of CO2 may be controlled by the equilibrium with the atmospheric CO2. Non-oxidative dissolution of Fe-monosulphides was demonstrated to release H2S and increase the pH. In the absence of ferric iron precipitation (goethite), the oxidation of pyrite decreased the solution pH from 2 to ~1.4, while the oxidation of Fe-monosulphide and chalcopyrite increased the solution pH to ~3.2-3.4. Assuming equilibrium precipitation of goethite, oxidative leaching decreased the solution pH for all three minerals from pH ~2 to ~0.9-1.2. Adjustment of the solution pH to 1.8 or 2.0 with KOH with concurrent equilibrium precipitation of K-jarosite resulted in low dissolved iron concentrations.

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