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1 Miller, Jan D.Equilibrium and kinetics of copper extraction from ammoniacal solutions by hydroxoximes with particular emphasis on transport phenomenaThe chemistry of copper extraction from ammoniacal solutions by hydroxyoxime extractants was studied. Equilibrium measurements were made by shakeout experiments with subsequent analyasis of the aqueous and/or organic phases. The kinetic experiments were carried out in a single drop reaction cell in ...Reactant; Concentration; Dispersed1981
2 Miller, Jan D.Effect of surface oxidation on interfacial water structure at the pyrite (100) surface as studied by MDSFlotation provides a number of alternatives for the processing of gold ores containing sulfide minerals. e.g. flotation of free gold and gold-bearing sulfides to produce a gold-rich concentrate for regrinding, oxidative pretreatment and cyanidation.2014-01-01
3 Miller, Jan D.Anisotropic character of talc surfaces as revealed by streaming potential measurements, atomic force microscopy, molecular dynamics simulations and contact angle measurementsA study of the interfacial properties of the basal plane and the edge surfaces of talc is described in this paper. The isoelectric points measured at two different crystallographic surfaces by the streaming potential method were found to be similar and exist at about pH 3.0. In the case of the edge...Talc; Interfacial properties; Hydration; Atomic force microscopy; Molecular dynamics simulations; Edge surface; Basal plane2007
4 Miller, Jan D.Flotation chemistry of nonsulfide mineralsThe dimensions of nonsulfide flotation technology extend in many different directions, as might be expected from the diversity of t he mineral classes, which include soluble salt minerals (potash, borax, and trona), semi-soluble salt minerals (phosphate minerals, fluorite, calcite, and barite), ins...Nonsulfide minerals; Hydrophobic surface state; Oleate adsorption2002
5 Miller, Jan D.Particle size segregation on a belt conveyorParticle size segregation is a common phenomenon in many particulate processes and has many undesirable effects. The size segregation which occurs on a belt conveyor causes a serious problem for on-line particle size measurement using image-based techniques. Whether particle size distributions mea...Particles; Size; Belt conveyors; Modelling1997
6 Miller, Jan D.Anisotropic character of talc surfaces as revealed by streaming potential measurements, atomic force microscopy, and molecular dynamics simulationsA study of the interfacial properties of the basal plane and the edge surfaces of talc is described in this paper. The isoelectric-point measured at the two different crystallographic planes by the streaming potential method was found to be similar and exists at about pH 3.0. In the case of the edg...Streaming potential; Scanning electron microscope; Atomic force microscope2006
7 Miller, Jan D.Characterization of interfacial water at hydrophilic and hydrophobic surfaces by in situ FTIR/internal reflection spectroscopyIn-situ FTIR/internal reflection spectroscopy (FTIR/IRS) has been used to spectroscopically characterize interfacial water near hydrophilic (silicon single crystal) and hydrophobic (polymer-coated germanium single crystal) surfaces. Interfacial water was examined spectroscopically over certain dista...Interfacial water; hydrophilic surfaces; Hydrophobic surfaces; Internal reflection spectroscopy; Silicon crystals; Germanium crystals1995
8 Rajamani, RajOnline SAG mill pulse measurement and optimization semi-annual technical progress reportThe grinding efficiency of semi autogenous milling or ball milling depends on the tumbling motion of the total charge within the mill. Utilization of this tumbling motion for efficient breakage of particles depends on the conditions inside the mill. However, any kind of monitoring device to measure...2006
9 Miller, Jan D.Understanding the role of ion interactions in soluble salt flotationThere is anecdotal evidence for the significant effects of salt ions on the flotation separation of minerals using process water of high salt content. Examples include flotation of soluble salt minerals such as potash, trona and borax in brine solutions. Although some of the effects are expected, so...2011-01-01
10 Miller, Jan D.Flotation chemistry of soluble salt minerals: from ion hydration to colloid adsorptionIn this paper, recent progress with respect to the flotation chemistry of soluble salt minerals is reviewed, and some of the more relevant issues including the hydration states of ions, the interfacial phenomena of salt surfaces and the flotation behavior of selected soluble salts are discussed. Due...2014-01-01
11 Miller, Jan D.Characterization of spherical alumina particles obtained by melting in a hydrogen-oxygen flameSpherical oxide particles can be used as mineral fillers, paint pigments, polishing materials and catalysts. They can be prepared using various techniques involving precipitation and spray drying. Melting of particles in a high-temperature flame is a simple technique which produces particles with ...Alumina; Oxides; Hydrogen-oxygen flame2003
12 Miller, Jan D.Nonsulfide flotation technology and plant practiceThere are hundreds of nonsulfide mineral flotation plants throughout the United States, and most have a plant design that depends upon the specific ore characteristics and the market specifications for their product. There is no common thread of technology between the design and processing of diffe...Flotation; Minerals; Processing plants2002
13 Miller, Jan D.; Wan, Rong YuSignificance of carbon properties in the enhanced ferric sulfate leaching of CuFeS2/C aggregatesAcid ferric sulfate solution has been used for heap and dump leaching of low-grade chalcopyrite ores and is being considered as a possible lixiviant for the hydrometallurgical processing of copper sulfide concentrates. For many years, researchers have attempted to explain the leaching behavior of ch...Ferric sulfate; CuFeS2; Particulate carbon1984
14 Miller, Jan D.Thiocarbonate collectors in pyrite flotation ? fundamentals and applicationsRecent results from electrochemical measurements demonstrate that trithiocarbonate (TTC) collectors are more readily oxidized to their corresponding dithiolates than the dithiocarbonate/xanthate (DTC) collectors. Based on the traditional analysis of collector adsorption, trithiocarbonates might then...Trithiocarbonate; xanthate; nitrogen2003
15 Miller, Jan D.; Nalaskowski, JakubFlotation chemistry and technology of nonsulfide mineralsThe dimensions of nonsulfide flotation technology extend in many directions, as might be expected from the diversity of the mineral classes, which include soluble salt minerals (potash, borax, and trona), semisoluble salt minerals (phosphate minerals, fluorite, calcite, and barite), and insoluble ox...Flotation; Insoluble collectors; Salt minerals; Nonsulfide minerals2007
16 Miller, Jan D.Surface phase transitions of adsorbed collector molecules as revealed by in-situ FT-IR/IRS spectroscopyIt has been shown by inspection of FT-IR/IRS spectra that the alkyl conformation of adsorbed collectors can be determined. The conformations of adsorbed collectors were interpreted in terms of bulk solution phases of the collectors. Such analysis was performed on the CaF2/oleate, A1203/SDS and KC1/...Oleates; Micellar; In situ analysis; Adsorption1993
17 Miller, Jan D.Zinc-dust cementation of silver from alkaline cyanide solutions - analysis of plant dataThe direct recovery of precious metals from alkaline cyanide solution is frequently accomplished by the well-established Merrill-Crowe process involving zinc-dust cementation. This is particularly true for silver. Plant data from two operations are presented and analyzed in terms of intrinsic reacti...Zinc-dust; Silver; Alkaline cyanide; Merrill-Crowe1988
18 Miller, Jan D.Air-sparged hydrocyclone (ASH) technology for cyanide recoveryAn air-sparged hydrocyclone (ASH) mobile system was evaluated for continuous stripping and recovery of cyanide (the AVR process) from process water at a gold plant site. The ASH unit performed exceptionally well as an absorber. HCN was absorbed from the gas phase in a single pass with an efficiency...Cyanide recovery; Air-sparged hydrocyclone; Gold processing; Process water2005
19 Miller, Jan D.Selective flotation of fossil resin from Wasatch Plateau high-volatile bituminous coalCertain bituminous coals are known to contain appreciable quantities of natural fossil or subfossil resin. Such resinous coals are found in the western US, particularly the Wasatch Plateau coalfield of UT. Some of the seams in this field contain an average of 5% resin. This fossil resin has been r...Bituminous coal; Wasatch Plateau; Resin1989
20 Miller, Jan D.; Deo, Milind; Lin, Chen-LuhDistribution of multiphase fluids in porous media: comparison between lattice Boltzmann modeling and micro-x-ray tomographyA parallel implementation of the three-dimensional Shan-and-Chen multicomponent, multiphase lattice Boltzmann method (LBM) was used to simulate the equilibrium distributions of two immiscible fluids in porous media. The simulations were successfully validated against cone-beam x-ray microtomographi...Multiphase fluid flow; Porous media; X-ray microtomography2008-02
21 Miller, Jan D.Molybdenite flotation from copper/molybdenum concentrates by ozone conditioningTypically, rougher molybdenite flotation and recovery from bulk copper/molybdenum concentrates involves the use of alkalisulfides, Nokes reagents, cyanides, oxidants, and/or thermal treatment to depress copper sulfide minerals. The bulk copper/molybdenum feed generally varies from 0.2% Mo to 1.0% M...Molybdenum; Copper; Flotation; Ozone conditioning1990
22 Miller, Jan D.Surfactant adsorption density calculation from Fourier transform infrared external reflection spectroscopy (FTIR/ERS)An equation to calculate surfactant adsorption density from Fourier transform infrared external reflection spectra was established. The derivation and limitation of this equation are discussed in detail. The validation of the FTIR/ERS adsorption density equation was experimentally verified from t...Surfactant; Adsorption density; Solid film2003
23 Miller, Jan D.Bench scale flotation of alunite ore with oleic acidAlunite [KA13(SO4)2(OH)6] is a promising non-bauxitic aluminum resource, the domestic reserves of which are estimated to be 800 x 106 tons at 35 percent alunite. The major gangue mineral associated with alunite is quartz. The thermochemical process that has been developed for treatment of this ore...Mesh; Separation; Liberation1980
24 Miller, Jan D.Magnetic separation for wastepaper recycle millsAn alternative approach to the conventional washing and flotation techniques for de-inking of mixed office waste (MOW) is magnetic separation. The use of magnetic de-inking has great potential to improve the efficiency of ink removal due to the magnetic content of toners. It is shown experimen...Deinking; Paper pulp; Wastepaper; Magnetic separation1997
25 Miller, Jan D.Thermogravimetric/Mass spectrometric (TG/MS) characterization of toner particles from photocopied wastepaper and the impact of these features on flotation deinkingFlotation deinking of photocopies from office waste is known to be much more difficult than the flotation deinking of newsprint. In this regard, research has been undertaken to better understand the phenomena which account for the poor efficiency in the flotation deinking of such office waste. Durin...Photocopied paper; Recycling; Deinking; Flotation; Thermal decomposition; Thermogravimetry; Mass spectrometry; Differential scanning calorimeter; Toner particles1995
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