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Development of a dynamic mill model structure for tumbling millsBy Weiguo Xie, Malcolm Powell, Lian Liu, Ping Yu
"In order to develop a common mathematical and simulation platform for tumbling mills, a review of existing mechanistic models was made identifying the key aspects of grinding and slurry transport whi
Jan 1, 2014
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Hydrophobicity and Flotation of Quartz and Feldspar in Presence of Monoalkyl of Polyethylene Glycol Ethers (ebc086ec-a6cb-485e-9402-92194f32bdc9)By Elzbieta Mielczarski, Jerzy Mielczarski, Jan Drzymala, Yann Duvalm
Polyethylene glycol monoalkyl ethers (CnEm) render quartz hydrophobic while feldspar remains hydrophilic. As a result quartz can be separated from feldspar in small frothless flotation devices such as
Jan 1, 2003
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The use of esterification to create hydrophobic quartz particles for flotationBy Ghislain Bournival, Cagri Emer, Seher Ata
"It is well known among flotation practitioners that the contact angle can be correlated with the amount of material recovered from feed by flotation. The contact angle of solids can easily be modifie
Jan 1, 2014
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Economic Production of Feldspar for the Ceramic IndustryBy Paolo Bevilacqua, Paolo Antonini, Lorenzo De Lorenzi
"Ceramic production requires large quantities of K-feldspar, which is commonly sourced from granites, alkali-granites, and feldspathic sands. These rocks contain other minerals, such as quartz and pla
Jan 1, 2003
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Mineralogical Insight into the Copper Selective Flotation at “DPM Chelopech“ ConcentratorBy L. Stamenov, H. Bouzahzah, S. Gaydardzhiev, D. Naumov
"The Chelopech epithermal arsenic bearing high-sulphidation, copper-gold deposit located in Bulgaria is often referred as the richest European gold deposit currently under exploitation. Key points fro
Jan 1, 2018
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Plant engineering and design experiences with the TankCell® e300By Ben Murphy, Alejandro Yanez, Tatu Miettinen
"Flotation using large volume cells has grown in importance during recent years, particularly given the increasing demand for minerals whilst ore grades are decreasing. Outotec introduced the TankCell
Jan 1, 2014
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Inert Gas Flotation TechnologiesBy John C. Gathje, Rick Moritz, Wilhelm de Beer
"Froth flotation has a long history of success for the recovery and concentration of a wide variety of minerals of commercial interest. Both the art and science of flotation have progressed greatly, a
Jan 1, 2003
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Aspects Of Flotation In A Fluidized BedBy Cagri Emer
In conventional mechanical flotation cells, when the size of particles exceed a particular value, that is of the order of 100 µm for metal sulphides, the recovery of particles decline rapidly. It appe
Sep 1, 2012
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Column Flotation of Coals and Minerals with Oscillatory Air Supply"This research aims at improving the beneficiation of coals and minerals in fine and ultrafine size fractions. A widely used method for upgrading fine and ultrafine particles is froth flotation, which
Jan 1, 2018
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Iron Removal of Yaliköy Sand Dunes (10886b65-8653-411d-a43d-c1682f2c69e7)By Güven Önal, Zeki Dogan, Neset Acarkan
In this study, it was aimed to produce glass sand with less than 0.15% Fe2O3 for window glass manufacture and glass ware grade with less than 0.05% Fe2O3 from Yalõköy sand dunes having 0.48% Fe2O3. In
Jan 1, 2003
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Jojoba oil as an alternative collector in the selective flotation of apatite and calcite at slightly acid conditionsBy Achilles Dutra, Everton Santos, José Oliveira
The beneficiation of phosphate ores by froth flotation is the most efficient process used to separate apatite from gangue minerals like calcite, dolomite and quartz. However, the similarity of surface
Jan 1, 2014
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The Development And Pilot Plant Testing Of Valuable Metals Recovery Technology From Pyrite CindersBy V. Dementiev
Pyrite cinders is a complex raw material, in which the valuable metals are: Au(2.04 g/t), Ag(35.0 g/t), Cu(0.38%), Zn(1.1%) and Fe(56.0%). In this case high costs for mining and ore processing are not
Sep 1, 2012
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Electrochemistry of Pyrite Flotation: Evaluation of Length of Hydrophobic Interactions between Mineral and Air Bubble from the Induction Time MeasurementBy V. E. Vigdergauz
The work presented shows results of electrochemical study of pyrite hydrophobicity evaluated by air bubble induction time (IT) measurements. On the basis of measured IT?s an average thickness of the t
Jan 1, 2014
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The Separation of Pentlandite from Serpentine Using Selective Magnetic Coating-Magnetic SeparationBy Z. T. Yuan, S. L. Qi, Q. Y. Meng, G. X. Zou, L. X. Li, J. W. Lu
"The selective separation of pentlandite from serpentine was investigated using the magnetic coating-magnetic separation by conditioning slurry pH value, stirring speed, magnetic field intensity and c
Jan 1, 2018
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A frother characterization technique using a lab mechanical flotation cellBy 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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Positron Emission Particle Tracking of Near Gravitational Material inside a Dense Media CycloneBy I. Govender, M. C. Richter, N. Mangadoddy
"We present an analysis of trajectory and time averaged data of near gravitational material (NGM) representative coal tracer particles within a magnetite medium passing through a 100mm diameter hydroc
Jan 1, 2018
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Using Geochemical Barriers For Additional Recovery Of Nonferrous Metals And For Water TreatmentBy Valentine Chanturiya1
We have developed a classification of geochemical barriers according to their origin, i.e. natural and artificial, and according to methods and areas of application. There has been an examination of
Sep 1, 2012
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A Modelling Study of the Dynamics of Sulphide Heap Leach Processes With a View to Improved and Novel Applications (94c1e0ad-31b6-423d-9e18-a597fc71f7da)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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Non Contact Acoustics Measurement and Validation of SAG Mill Operation (9e67a48f-a988-4e1a-b466-2b273ec64d48)By Rod Hocking, Nenad Djordjevic, Randolph Pax
"Semi Autogenous (SAG) mills exhibit complex interactions between the competing processes occurring inside them. Traditional practice is to measure the operation of the SAG mill at an operating point
Jan 1, 2003
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An Investigation Into The Role Of The Froth Phase In The Flotation Of Ug2 Ore Using A Laboratory Column Flotation CellBy M. Alvarez-Silva
The control of the amount of chromite reporting to the concentrate during the flotation of UG2 ore is of critical importance since its presence affects the downstream smelting process. It is generally
Sep 1, 2012