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Wet grinding of CaCO3 with a stirred media mill: Influence of obtained particle size distributions on pressure filtration properties
(Elsevier, 2015-03)
Chemical and process industries utilize stirred media mills for efficient fine grinding of solids. Stirred media mills, also referred to as stirred ball or stirred bead mills, generally have a good ability to produce fine ...
Dissolution of sodium, aluminum and caustic compounds from bauxite residues
(Elsevier, 2015-08)
Bauxite residues consist of solid particles and a strongly alkaline liquid. Depending on the selected disposal method, the solids content of washed bauxite residues varies from 30 to 70 w-%. The objective of this study is ...
Recovery of sodium from bauxite residue by pressure filtration and cake washing
(Elsevier, 2015-08-10)
Bauxite residue, the main waste fraction of alumina production, is extremely hazardous to the environment, as well as to human health. After the recovery of the pregnant liquor, the washed and thickened bauxite residue is ...
Enabling safe dry cake disposal of bauxite residue by deliquoring and washing with a membrane filter press
(SAGE Publications, 2015-02-16)
Dry cake disposal is the preferred technique for the disposal of bauxite residue, when considering environmental issues together with possible future utilisation of the solids. In order to perform dry cake disposal in an ...
Ion exchange recovery of rhenium from industrially relevant sulfate solutions: single column separations and modeling
(Elsevier, 2015)
In this study, phenomena behind recovery of Re by weak anion exchangers from sulfate solutions containing Mo and As as impurities were investigated. All the metals exist as different kinds of oxyanions or, at some conditions, ...
Synthesis of hydrometallurgical processes for valorization of secondary raw materials using ant colony optimization and key performance indicators
(Elsevier, 2015-02-16)
An algorithm-based method for synthesis of hydrometallurgical processes using limited amounts of experimental data is presented. The method enables simultaneous selection and sequencing of unit operations and optimization ...
Prediction of pressure filtration characteristics of CaCO3 suspensions ground in a vertical stirred media mill
(Elsevier, 2015-11)
Cake filtration is an important unit operation in the processing of minerals and pigments. The filtration characteristics are strongly dependent on the upstream processing of the ore, such as grinding parameters. This study ...
Ion exchange recovery of silver from concentrated base metal-chloride solutions
(Elsevier, 2015)
Ion exchange has not been extensively studied nor industrially used for recovering small amounts of silver from concentrated base metal-chloride solutions. A novel multistep process utilizing a weak anion exchanger with ...
Reflective practice as a determinant of performance outcomes in services
(Emerald Group Publishing, 2015-11-16)
Purpose
The purpose of this paper is to examine the outcomes of reflective practices in services. The paper contributes to the current understanding of the relationship between reflective practice and outcomes by presenting ...
Managing performance and learning through reflective practices
(Emerald Group Publishing, 2015-12-07)
Purpose
The purpose of this paper is to study the role of performance management (PM) in the use of reflective work practices.
Design/methodology/approach
The empirical evidence was collected during a one-year, ...