Search
Now showing items 1-9 of 9
Optimization of Pb flotation using statistical technique and quadratic programming
(ELSEVIER SCIENCE BV, 2008)
A three-level Box-Behnken factorial design combining with a response surface methodology (RSM) was employed for modeling and optimizing three operations parameters of the flotation on lead flotation. The flotation studies ...
Increasing selectivity in coal flotation by controlling impeller speed and collector concentration
(TAYLOR & FRANCIS INC, 2005)
Batch flotation experiments were conducted using a bituminous coal. It was found out that pulp density and especially impeller speed had significant influences on coal flotation performance, selectivity and rate. Products ...
Predicting the efficiencies of 2-mercaptobenzothiazole collectors used as chelating agents in flotation processes: a density-functional study
(SPRINGER, 2006)
In recent years, several new chelating reagents have been synthesized and tested for their collecting power in sulfide and non-sulfide minerals flotation. Many researchers have indicated that chelating reagents have the ...
A density functional study on the efficiencies of 2-mercaptobenzoxazole and its derivatives as chelating agents in flotation processes
(ELSEVIER SCIENCE BV, 2006)
By using the density functional theory (DFT), we calculated some properties such as the energies of highest occupied molecular orbital (HOMO) orbitals and the atomic charges which are related to the reactive behavior of ...
Reactivities of some thiol collectors and their interactions with Ag (+1) ion by molecular modeling
(ELSEVIER SCIENCE BV, 2004)
The most commonly used collectors for sulfide minerals in the mining industry are the thiol collectors for the recovery of these minerals from their associated gangues by froth flotation. For this reason, a great deal of ...
Effect of flotation reagents on the wet grinding of celestite concantrate
(NATL INST SCIENCE COMMUNICATION-NISCAIR, 2004)
In this study, the grinding of celestite concentrate in presence of grinding aids, used for celestite ore, flotation has been investigated in a laboratory wet-ball mill as a function of time and concentration of grinding ...
Molecular modeling study on the relative stabilities of the flotation products for arsenic-containing minerals: dixanthogens and arsenic(III) xanthates
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2005)
The interactions of As(III) ion with C2H5OCS2- and C2H5SCS2-, known as the most popular collector ions, were studied by density functional theory (DFT) at the B3LYP/6-31G** level in connection with the arsenic-containing ...
Characterisation of surface roughness and wettability of salt-type minerals: calcite and barite
(MANEY PUBLISHING, 2004)
Salt-type minerals of calcium (calcite) and barium (barite) are important raw materials for metallurgical. chemical and algricultural industries. Flotation is the primary process for recovering these minerals from ores. ...
Effects of the shape properties of talc and quartz particles on the wettability based separation processes
(ELSEVIER SCIENCE BV, 2004)
Shape properties of talc and quartz particles ground by a laboratory size ball, rod, and autogenous mills were studied using scanning electron microscope (SEM). More than 100 particles were measured to do the shape analysis ...