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Creator | Title | Description | Subject | Date |
| 126 |
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Miller, Jan D. | Three dimensional analysis of particulates in mineral processing systems by cone beam X-ray microtomography | In general, X-ray-computed tomographic (CT) techniques are capable of providing three-dimensional images of the internal structure of opaque materials in a nondestructive manner. The unique cone beam geometry allows acquisition of all two-dimensional projections with only one rotation of the sample,... | Cone beam CT; X-ray microtomography; Liberation analysis; Particle shape; Heap leaching; Exposure analysis; Coal washability | 2004 |
| 127 |
 |
Miller, Jan D. | Hydroxamate vs. fatty acid flotation of iron oxide | Data were obtained with hematite with octyl hydroxamate and oleate as collectors to determine the mechanism of collector adsorption and also to establish the roles that conditioning time and temperature assume in this system. The presence of hydroxy complexes of iron are apparently necessary for che... | Iron ore; Iron; Fatty acid; Hydroxy complexes | 1970 |
| 128 |
 |
Miller, Jan D. | Hydrometallurgy | The science and technology of hydrometallurgy and chemical processing continues to advance both at the laboratory level and in plant practice. In past decades, hydrometallurgy was rather limited in scope and received relatively little attention, being largely a laboratory curiosity. But curiosity i... | Hydrometallurgy; Chemical processing; Environment; Laboratory practice; Plant practice | 1972 |
| 129 |
 |
Miller, Jan D. | Analysis of the surface potential developed by non-reactive ionic solids | The sign of the surface potential for complex non-reactive ionic solids cannot be predicted solely from consideration of the hydration energy of gaseous ions which constitute the ionic lattice. Accurate analysis of these systems must involve the hydration energy of surface ions, which requires knowl... | Lattice; dipole; Madelung Constants | 1976 |
| 130 |
 |
Miller, Jan D.; Herbst, John A. | Factors affecting droplet size distributions produced in dispersed phase mixers | Droplet size distributions were determined by stabilizing in gelatin and measurement of the distributions by means of computerized image analysis. Several variables that affect droplet sizes were studied and the resulting size distributions were modeled via a population balance equation. Key paramet... | Gelatin; Phases; Agitating | 1981 |
| 131 |
 |
Miller, Jan D. | Development of the air-sparged hydrocyclone - a swirl-flow flotation column | From laboratory research activities during the past five years, it is now evident that effective flotation separations can be achieved with the high-capacity air-sparged hydrocyclone. | Air-sparged hydrocyclone; Froth core | 1988 |
| 132 |
 |
Miller, Jan D. | Tar sand pretreatment with diluent | Important aspects of kerosene penetration into tar sand have been investigated. The natural tar sand porosity was measured and used to analyze the performance of the hot water process. Subsequently, pretreatment experiments, using 20-kg tar sand samples (Asphalt Ridge and Whiterocks, Utah) and ker... | Tar sand; Kerosene; Porosity; Temperature | 1993 |
| 133 |
 |
Miller, Jan D. | Equilibrium and kinetics of copper extraction from ammoniacal solutions by hydroxoximes with particular emphasis on transport phenomena | The 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; Dispersed | 1981 |
| 134 |
 |
Miller, Jan D. | Flotation of boron minerals: discussion | Experimental flotation/bubble attachment results for 21 different alkali halides (Yalamanchili et al., 1993; Yalamanchili and Miller, 1994b) confirmed that the flotation response of soluble salt minerals with weak electrolyte collectors can best be explained by the adsorption of oppositely charged ... | Flotation; Boron minerals; Salts; Adsorption | 1994 |
| 135 |
 |
Miller, Jan D. | Free and emulsified oil removal by bubble accelerated flotation (BAF) | Operational data from full-scale field applications and pilot tests using the Bubble Accelerated Flotation ( B A R system for the treatment of wastewater are presented. The compact BAF system based on the air-sparged hydrocyclone technology was designed to remove pollutants from industrial waste and... | Bubble accelerated flotation; Air-sparged hydrocyclone; Flocculants; Oil-in-water emulsion | 1999 |
| 136 |
 |
Miller, Jan D. | Water at interfaces - some recent experimental results from surface spectroscopy | Fundamental aspects of interfacial phenomena in aqueous systems are determined by the properties of interfacial water It has become evident that interfacial water must be characterized spectroscopically in order to explain the recently identified non DLVO forces observed by atomic force microscopy a... | Interfacial water; Surface spectroscopy; Hydrophobic surfaces; Hydrophilic surfaces; Hydrogen bonding; FTIR/IRS; SFG; Spectroelectrochemistry; Non-DLVO forces; Atomic force microscopy | 1996 |
| 137 |
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Miller, Jan D.; Lin, Chen-Luh | Scientific visualization in mineral and material processing | Scientific visualization is an ideal methodology for investigating complex phenomena that are characterized by large amounts of data. Furthermore, it is invaluable in the study of processes that evolve in time. Scientific visualization relies heavily on computer graphics, image processing and video... | Air sparged hydrocyclone flotation; Ball mill grinding; Tomography; Computer graphics | 1993 |
| 138 |
 |
Miller, Jan D. | Comparison of process alternatives for gold recovery from cyanide leach solutions | Both conventional and nonconventional process alternatives for gold recovery from cyanide heap leach solutions are discussed in terms of possible flowsheets. Conventional process alternatives include carbon adsorption and zinc dust precipitation, while nonconventional process alternatives include re... | Conventional; Exchange; Flowsheet | 1984 |
| 139 |
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Miller, Jan D. | Bench scale flotation of alunite ore with oleic acid | Alunite [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; Liberation | 1980 |
| 140 |
 |
Miller, Jan D.; Lin, Chen-Luh | On-line washability analysis for the control of coarse coal cleaning circuits | In view of the success of recent laboratory studies using X-ray computed tomography (CT) to determine coal washability and with the availability of high-speed CT systems, it now seems possible to design an on-stream washability system for the control of coarse coal-cleaning circuits. Design features... | On-stream washability; CT analyzer; Coal washability | 1995 |
| 141 |
 |
Miller, Jan D.; Fang, Zhigang Zak; Lin, Chen-Luh | Characterization of powder injection molded components using X-ray CT | A good understanding of the microstructure of powder injection molded (PIM) components during debinding and sintering is essential in designing and optimizing PIM processes and properties. So far we have been limited in our ability to "see" what is going on. Microstructural characterization has cla... | Powder injection molding | 2003 |
| 142 |
 |
Miller, Jan D. | Agglomeration and magnetic deinking for office paper | Magnet deinking of office paper (OP) is a promising technology for the production of high quality secondary fiber. The technique is possible because a significant portion of the toner in OP furnish has a magnetic character. Toner magnetic susceptibility can vary from weakly paramagnetic to ferroma... | Wastepaper; Magnetic deinking; Toner; Magnetic susceptibility | 2000 |
| 143 |
 |
Miller, Jan D. | Chrysocolla flotation by the formation of insoluble surface chelates | Pure chrysocolla is floated with chelating agents that form insoluble complexes with copper at ambient temperature. Complete flotation is obtained with potassium octyl hydroxamate as collector at pH 6. Flotation response is enhanced with increased temperature when low additions of h ydroxamate are ... | Chrysocolla; Copper chelating compounds; Flotation systems | 1965 |
| 144 |
 |
Miller, Jan D. | Air sparged hydrocyclone for fine coal flotation | The cleaning of fine coal to achieve compliance specifications generally is a challenging problem for coal preparation engineers. Gravity separation techniques are limited with regard to capacity/ efficiency considerations, and the most promising process alternative seems to be flotation, the u... | Microbubble; Compliance; Bituminous | 1988 |
| 145 |
 |
Miller, Jan D.; Lin, Chen-Luh | Fine coal washability-liberation analysis by cone-beam X-Ray microtomography | A new method based on cone-beam x-ray microtomography is described for direct determination of the three-dimensional liberation spectrum of multiphase particles 100 microns in size or less. Such a technique may provide the basis for more detailed and accurate washability analysis in fine coal chara... | Spectrum; Sink-float; Density | 1996 |
| 146 |
 |
Miller, Jan D. | Trithiocarbonates for PGM flotation | Small replacements of C12-trithiocarbonate (C12-TTC) for dithiocarbonate DTC)/dithiophosphate (DTP) in a reagent suite for the flotation of platinum group metals (PGM) have significantly improved the rejection of gangue. Coupled to this is an improvement in kinetics, grade and recovery of PGMs. In ... | | 2006 |
| 147 |
 |
Miller, Jan D. | Dimethyl ether - a new synthetic fuel commodity and chemical building block | Dimethyl ether (DME) is recognized as a potential next-generation, environmentally benign commodity for energy storage and distribution, as well as a momentous chemical building block. DME can be produced at a competitive price from synthesis gas conveniently generated from a variety of carbon-cont... | Dimethyl ether; DME; Energy carrier; Energy commodity; Diesel fuel | 2005 |
| 148 |
 |
Miller, Jan D. | Quantitative in-situ analysis of collector adsorption reactions by FTIR internal reflection spectroscopy | Researchers in flotation chemistry have long sought to describe collector adsorption phenomena in greater detail including kinetics, orientation and interactions between adsorbed species. Now a quantitative description can be made in-situ using FTIR internal reflection spectroscopy. Details of the a... | Fourier transform infrared spectrometers | 1989 |
| 149 |
 |
Miller, Jan D. | Air-sparged hydrocyclone (ASH) technology for cyanide recovery | An 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 water | 2005 |
| 150 |
 |
Miller, Jan D. | Preliminary evaluation of air-sparged hydrocyclone technology for scavenger flotation of Western phosphates | The sedimentary western phosphate deposits of Idaho, Montana, Utah, and Wyoming tend to be calcareous and generally carry a significant amount of dolomite along with collophanite. In some cases, such as the Smokey Canyon Mine, Afton, Wyoming, the ore will also contain mudstone, and in this case the ... | Collophanite; hydrosizer; scavenger concentrate | 1993 |
