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1 Miller, Jan D.; Lin, Chen-Luh3D analysis of particulates in mineral processing systems by cone beam X-ray microtomographyIn general, x-ray computed tomographic (CT) techniques are able to provide 3D images of the internal structure of opaque materials in a nondestructive manner. The unique cone beam geometry allows acquisition of all 2D projections with only one rotation of the sample thus providing for fast data acqu...X-ray microtomography; Liberation; Heap leaching; Exposure analysis; Coal washability2003
2 Miller, Jan D.A new cone beam X-ray microtomography facility for 3D analysis of multiphase materialsThree-dimensional x-ray microtomography offers a unique imaging capability. Spatial resolution on the order of ten microns can be achieved with the use of microfocus x-ray generators. Recently, a state-of-the-art, flexible cone beam x-ray microtomography system has been installed at the University o...2001-01-01
3 Miller, Jan D.Adsorption mechanisms in nonmetallic activation systemsAdsorption of lead and ferric iron on quurtz and alumina is presented as a function of pH. Only the hydrolyzed species of these metal ions, FeOHt+ and PbOH', adsorb significantly on each of these minerals. Zeta potentials of quartz were measured as a function of pH in the presence of various additio...Ferric iron; Quartz; Lead; Alumina; Adsorption; pH (Chemistry)1970
4 Rajamani, RajAdvances in discrete element method application to grinding millsDiscrete element method (DEM) has made significant impact in the design and operation of grinding mills. The internal charge motion of grinding balls and ore can be readily examined. As a result, this method enables one to design and examine mill internals via simulation. This manuscript details es...2014-01-01
5 Miller, Jan D.Agglomeration and magnetic deinking for office paperMagnet 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 susceptibility2000
6 Miller, Jan D.; Niewiadomski, Marcin M.; Hupka, Jan; Nalaskowski, JakubAir bubble and oil droplet interactions in centrifugal fields during air-sparged hydrocyclone flotationThe interactions of air bubbles and oil droplets in centrifugal flotation have been considered with respect to process conditions present during Air-sparged Hydrocyclone (ASH) flotation. Encounter efficiency of oil droplets with air bubbles has been found to be significantly smaller when compared t...Centrifugal flotation; Froth flotation; Oil flotation; Dispersed oil; Air-sparged hydrocyclone; ASH2007
7 Miller, Jan D.Air sparged hydrocyclone for fine coal flotationThe 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; Bituminous1988
8 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
9 Miller, Jan D.Analysis of the surface potential developed by non-reactive ionic solidsThe 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 constants1976
10 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
11 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
12 Miller, Jan D.Applications of X-ray computed tomography in particulate systemsX-ray computed tomography (CT) is an ideal technique for investigating the internal structure of multiphase materials in a noninvasive and nondestructive manner. CT technology used in conjunction with specialized algorithms and advanced computer facilities can be used to provide quantitative informa...Algorithms; Beam; Intensity1992
13 Miller, Jan D.Arsenic removal from contaminated watersArsenic is a contaminant at 781 of 1,430 sites identified on the National Priorities List and in mining and mineral processing wastewaters, smelter wastes, and sites for manufacture of semiconductors, petroleum products, wood preservatives, animal feed additives, and herbicides. Arsenic affects abo...arsenic; arsenate; arsenite; microbial; activated carbon; magnetic activated carbon; biomac2005
14 Miller, Jan D.Atomic force microscopy investigation of interaction forces between polyethylene and asphaltene surfacesMany petroleum-derived asphalts used for road construction exhibit poor rheological properties. These properties of asphalt can be improved by addition of various polymer fillers to the asphalt blend. Recycled polyolefines, especially polyethylene and polypropylene have been used as the asphalt mo...asphalt; rheology; polyolefins2006
15 Miller, Jan D.Axial flow reversal and its significance in air-sparged hydrocyclone (ASH) flotationIn recent years the potential of air-sparged hydrocyclone (ASH) flotation for fine coal cleaning has been demonstrated both in pilot plant testing and in a plant-site demonstration program. Further improvements in the ASH technology will depend, to some extent, on improved understanding of the co...Flotation; zero axial velocity; computational fluid dynamics1995
16 Miller, Jan D.The behavior of arsenic trioxide in non-ferrous extractive metallurgical processingStudy of the acid bake-leach process has shown potential advantages for the treatment of enargite (Cu3AsS4) concentrates. Among the most important advantages of the process is the transformation of enargite to water-soluble copper sulfate and highly soluble arsenic trioxide (arsenolite). Because ars...acid bake; enargite; vapor pressure; arsenolite; claudetite; copper sulfate2014-01-01
17 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
18 Miller, Jan D.Bench scale flotation of sedimentary phosphate rock with hydroxamic acid collectorsIt has been discovered that water insoluble alcoholic solutions of alkyl hydroxamic acids serve as selective collectors for the flotation of phosphate mineral resources. The effectiveness of the new collector chemistry has been demonstrated by the results from single stage bench scale flotation exp...flotation; insoluble collectors; hydroxamic acid; alcohol; phosphate rock; high solids conditioning; particle size2002
19 Miller, Jan D.Bismuth dissolution from smelter flue dust residuesEffective bismuth removal from flue dust residues has been accomplished for flue dusts from both zinc and copper smelters. Selective dissolution of bismuth, with respect to silver and lead, can be achieved by the proper manipulation of temperature, sulfuric acid addition and sodium chloride addition...technique; distribution; chloride1976
20 Miller, Jan D.Bubble attachment time and FTIR analysis of water structure in the flotation of sylvite, bischofite and carnalliteWater structure is a most important parameter that influences the flotation of soluble salts. In this paper bubble attachment time measurements and FTIR analyses were performed to investigate the effect of water structure on the flotation behavior of sylvite (KCl), bischofite (MgCl2•6H2O) and carn...2010-01-01
21 Miller, Jan D.Bubble generation in swirl flow during air-sparged hydrocyclone flotationAir-sparged hydrocyclone (ASH) flotation is a new, promising technology, and, since its conception, numerous applications have been successfully tested. Nevertheless, research and development efforts have continued to improve the technology with respect to operating conditions and design considerati...Air-sparged hydrocyclone flotation; bubble size; process variables1996
22 Miller, Jan D.; Lin, Chen-LuhCapillary network model for filter cake based on pore structure analysisDewatering of fine coal by continuous filtration involves filter cake formation and removal of surface moisture by drawing air through the capillaries of the cake. In order to gain a better (understanding of the complex transport phenomena that occur in the filter cake, analysis of the effect of t...pore geometry; transport properties; microtomography1996
23 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
24 Miller, Jan D.; Fang, Zhigang Zak; Lin, Chen-LuhCharacterization of powder injection molded components using X-ray CTA 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 molding2003
25 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
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