Results 251 to 260 of about 4,276 (298)

The difference in flotation kinetics of various size fractions of bituminous coal between rougher and cleaner flotation processes

Powder Technology, 2016
In order to investigate the difference in flotation kinetics of various size fractions of bituminous coal between rougher and cleaner flotation processes, clean coal was collected as a function of time in both rougher and cleaner flotation processes. The
Guangyuan Xie, Wencheng Xia
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

On the kinetics of froth flotation

International Journal of Mineral Processing, 1990
Abstract The problem of froth flotation kinetics is treated as a transport phenomenon. Two coupled equations of balance are formulated which concern the particles attached upon the bubbles and the free particles in the pulp. The combined equations are solved and an analytical expression for the recovery as a function of time is obtained.
B.P. Radoev, L.B. Alexandrova, S.D. Tchaljovska   +2 more
openaire   +1 more source

Flotation characteristics and flotation kinetics of fine wolframite

Powder Technology, 2017
Abstract The flotation characteristics and kinetics of fine wolframite from Shizhuyuan Mine, Hunan, China were studied. Coarse and middle particles entered the concentrate easily. However, because of the reduction of middle particles as carriers and the poor collision and attachment between fine particles and air bubbles, it was difficult to float ...
Guanghua Ai, Xiuli Yang, Xiaobo Li
openaire   +1 more source

Wetting film stability and flotation kinetics

Advances in Colloid and Interface Science, 2002
Single bubble experiments performed with different size fractions of quartz particles and different, but known, contact angles revealed two modes of flotation dynamics in superclean water. (1.) A monotonic increase of collection efficiency Ecoll with increasing particle size was observed at high particle hydrophobicity and, correspondingly, a low ...
J, Ralston, S S, Dukhin, N A, Mishchuk
openaire   +2 more sources

Kinetics and mechanism of coal flotation

Colloid & Polymer Science, 2002
The flotation kinetics of coarse coal particles was studied in a modified version of the Hallimond tube at 25 °C using nitrogen as the carrier gas, in the pH range 2–12. The kinetics was followed by measuring the volume of the particles accumulated in the collector tube as a function of time.
Eduardo Humeres, N.A. Debacher
openaire   +1 more source

Application of flotation kinetics models to chalcopyrite flotation: determination of optimum flotation times

Journal of Dispersion Science and Technology
This study advances the field of flotation kinetics by deriving and comparing optimum flotation time equations for eight different kinetic models in chalcopyrite beneficiation. While Agar (1985) established the method for finding the optimum flotation time for his specific model, this research extends the application to multiple established flotation ...
Simsek, Selma, Kilinc, Turan, Cebeci, Yakup, Abbaker, Ahmed   +3 more
openaire   +2 more sources

Effect of temperature on the kinetics of froth flotation

Minerals Engineering, 1994
Abstract The kinetics of froth flotation and the three-phase contact (TPC) parameters are studied at temperatures varying from 20°C to 40°C. The material floated consists of glass spheres (ballotini) and quartz particles with various diameters. Dodecylamine hydrochloride (DDAHCl) as a collector is used.
D. Lazarov, L. Alexandrova, I. Nishkov
openaire   +1 more source

Kinetic considerations in the flotation of phosphate ore

Advanced Powder Technology, 2005
Abstract A study was conducted on the flotation with oleic acid of sedimentary phosphates from Sierra Espuna, in the province of Murcia (Spain), also comprising an analysis of the kinetic considerations governing the operation. Two different flotation cells were used for this purpose, i.e. a Hallimond tube and a subaeration cell (Denver D-12).
F. Hernáinz, M. Calero, G. Blázquez
openaire   +1 more source

Thermodynamic and Kinetic Flotation Criteria

Mineral Processing and Extractive Metallurgy Review, 1989
Abstract Flotation thermodynamics and notation kinetics are discussed and compared with chemical thermodynamics and chemical kinetics. While chemical thermodynamics can predict whether a reaction will take place under a given set of conditions (temperature and pressure), and can also predict the direction in which the equilibrium will be shifted in ...
openaire   +1 more source

Flotation Kinetics and Fine Particle Flotation

2004
As with all physical and chemical processes flotation is a rate process governed by kinetic parameters, which are determined by several factors including the chemistry of the mineral-water interface, particle-bubble collision efficiency, and the strength of attachment of particles to the bubbles.
openaire   +1 more source