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"N-carboxymethyl chitosan in differential flotation ofgalena and chalcopyrite"
By Kaioeng Wang, Qi Liu, Yahui Xiang
"In the differential metal sulfide ore flotation it is desirable to replace the toxic inorganic depressants with environmentally benign chemicals. Chitosan, as a natural and non-toxic polymer, has bee
Jan 1, 2014
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1+1/4 Necessary and Sufficient Conditions of Organic Che-lating Agents as Depressors or Activators
By W. G. Wu
More and more researches and applications of organic chelating agents as depressors or activators are carried out in the course of research and application of modern flotation. The paper puts forward
Jan 1, 2014
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A CFD Simulation of the Hydrodynamics of a Reactor With and Without a Draft Tube
By H. Pearce, A. E. Lewis, A. Ochieng
Hydrodynamics and mixing are fundamental to the operation of mineral process systems such as flotation cells and metal precipitation reactors. The computational fluid dynamics (CFD) technique has been
Jan 1, 2003
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A crystal ball vision of innovation in mineral processing
By Jannie van Deventer
"Innovation in the minerals industry has been lagging behind comparable industries like oil and gas. An incremental innovation culture that tolerates long lead times between invention and adoption has
Jan 1, 2014
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A frother characterization technique using a lab mechanical flotation cell
By Paulo Castillo, Cesar Gomez, Jaime Alvarez
Operations using flotation to produce mineral concentrates require testing of frothers to characterize their ability to preserve bubble formation size and to build a stable froth. Many techniques have
Jan 1, 2014
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A Generic Approach to the Development of Semi-Empirical Predictive Models for Bath-Type Furnaces
By Markus A. Reuter, Jacques J. Eksteen
The modelling of bath type furnaces tends to be either fundamental in nature or total empirical "black box models". While models of the first kind are robust, they tend to lack accuracy, in cases wher
Jan 1, 2003
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A mechanistic study of arsenic (V) removal from artificially contaminated clay soils by electrokinetic remediation
By Masakazu Niinae, Tasuma Suzuki, Mai Moribe, Yohhei Okabe
Bench-scale electrokinetic experiments were performed to elucidate the electrokinetic remediation mechanisms of arsenate from artificially contaminated kaolinite. The electrokinetic experiments in whi
Jan 1, 2014
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A Microblal Pretreatment for Double Refractory Gold Ores
By J. K. Afidenyo
Microbial pretreatment of a double refractory gold ore was investigated using a white rot fungus, Coriolus versicolor (ATTC 20869) to improve gold extraction. A series of preliminary tests were conduc
Jan 1, 2014
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A Modelling Study of the Dynamics of Sulphide Heap Leach Processes with a View to Improved and Novel Applications
By Jochen Petersen, David G. Dixon
"Although heap leaching may be perceived as a somewhat low-tech route for the extraction of low-grade minerals, the underlying physical, chemical and biological processes are in fact extremely complex
Jan 1, 2003
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A Molecular Modeling Study of Oleate Monolayers Adsorbed at Calcium Mineral Surfaces
By Pradip, Beena Rai
A molecular modeling study was carried out on an adsorbed oleate monolayer on the surfaces of three calcium minerals, fluorite, calcite and fluorapatite using Universal Force Field (UFF) potentials. T
Jan 1, 2003
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A new insight into oxidation mechanisms of sulphide minerals
By Alireza Javadi Nooshabadi, Kota Hanumantha Rao
Formation of hydrogen peroxide (H2O2), an oxidizing agent stronger than oxygen, by sulphide minerals during grinding was examined. It was found that pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite ((
Jan 1, 2014
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A Novel Adsorbent Synthesized From Blast Furnace Slag With Phosphate Sorption Capacity
By Takaaki Wajima
The slag was attempted to be converted into the adsorbent for phosphate removal from aqueous solution using the alkali fusion method. The slag was mixed with NaOH powder (NaOH / Slag = 1.6), and then
Sep 1, 2012
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A novel, energy efficient, two stage heap leach process for the extraction and recovery of PGMs
By Jochen Petersen, Steven Bradshaw, Guven Akdogan, Ngoie Mpinga, James Mwase, Jacques Eksteen, Cornelius Snyders
"The platinum group metals (PGMs) and associated minerals are particularly refractory to most traditional direct leach processes. However, the remoteness of many new ore deposits, socio-political risk
Jan 1, 2014
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A Perspective Of Growth Of Mining Industry In India
By Sudhir Srivastava
India hosts a wide range of globally significant mineral resources, including four fuel minerals; 11 metallic minerals; 22 minor minerals and 52 non-metallic minerals. The country ranks among world?s
Sep 1, 2012
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A Practical Model for Industrial Flotation Banks
By J. B. Yianatos
A practical an interactive model to describe the operation of a flotation bank of mechanical cells was developed based on the hydrodynamic and metallurgical characterization of large industrial flotat
Jan 1, 2014
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A Predictive Model For Solution Composition, Neutralizer Dosage, And Sludge Generation In The Treatment Of Acid Mine Drainage From Abandoned Mines
By Chiharu Tokoro
Acid Mine Drainage (AMD), high acid water containing heavy metals discharged from mines, has been recognized as major cause of mine pollution. In Japan, the government spends billions of yen every yea
Sep 1, 2012
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A quantitative modeling for coprecipitation of arsenic with ferrihydrite in treatment of acid mine drainage
By Shuji Owada, Shinya Suzuki, Chiharu Tokoro, Daisuke Haraguchi, Sayaka Izawa
"Coprecipitation with ferrihydrite has been one of the major treatment method for As(V) removal from wastewater such as acid mine drainage. We already confirmed coprecipitation of As(V) with ferrihydr
Jan 1, 2014
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A Simulation Methodology for the Design of Eco-efficient Comminution Circuits
By Z. Pokrajcic
The traditional comminution circuit is a major consumer of energy ? both as electrical energy and through consumption of media and wear resistant liners. Up to 40% of electrical energy con-sumed at a
Jan 1, 2014
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A Study of Platinum Adsorption on Amine-treated Activated Carbons
By H. Kasaini
Batch wise adsorption tests for platinum (Pt) on the surface of activated carbon pellets (Norit RO 0.8 BET surface area 1100 mg/g) were carried out in mixed chloride solution. The purpose of this stud
Jan 1, 2014
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A Study on Mineral Eco-materials
By F. Q. Dong
According to the principle that should be originated from nature, compatible with nature, used in nature and back to nature and based on conception of designing of eco-material, the author combined th
Jan 1, 2014