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Creator | Title | Description | Subject | Date |
| 76 |
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Miller, Jan D. | Atomic force microscopy investigation of interaction forces between polyethylene and asphaltene surfaces | Many 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; Polyolefins | 2006 |
| 77 |
 |
Miller, Jan D. | Removal of volatile organic compounds from contaminated water using air-sparged hydrocyclone stripping technology | The air-sparged hydrocyclone (ASH) technology offers the unique opportunity to achieve efficient removal of volatile organic compounds (VOCs) from contaminated water at a high specific capacity, more than 100 times that of conventional air stripping technologies. VOC stripping is the first applicati... | Air-sparged hydrocyclone; Air stripping; Contaminated water | 1997 |
| 78 |
 |
Miller, Jan D. | Structure and composition of commercial copper chelate extractants | The structure, properties, and composition of commercial chelating-type copper extractants are examined. Characterization of these extractants was accomplished using organic separation techniques and analytical tools such as NMR and infrared spectroscopy. Results indicate that only the trans isomer ... | LIX® reagents; stoichiometry; reaction mechanism | 1973 |
| 79 |
 |
Miller, Jan D.; Lin, Chen-Luh | 3D analysis of particulates in mineral processing systems by cone beam X-ray microtomography | In 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 washability | 2003 |
| 80 |
 |
Miller, Jan D. | Methodology for detailed liberation analysis in mineral processing technology | A transformation equation can be used to describe the relationship between the one, two and three dimensional information regarding the composition of mineral particles of specified size. Linear or areal grade distributions f(gi) can be transformed to an estimate of the volumetric grade distribution... | Volumetric grade; Grade; Distribution | 1986 |
| 81 |
 |
Miller, Jan D. | Dispersed oil impact on froth stability in flotation | Foam stability in flotation has been studied for more than half of the last century, however, the mechanisms responsible for the defoaming action of many presently used reagents are not completely understood. This research presents oil flotation data, which may be used in the evaluation of aqueous ... | Particles; Defoaming; Surfactants | 2001 |
| 82 |
 |
Miller, Jan D. | Effect of ink types and printing processes on flotation deinking | Examination of ink types reveals that newsprint oil-based offset-cold and offset-heat inks contain substantial oil (45 to 60%) and resin (5 to 35%), water-based ink contains water (40%) and resin (polystyrene, 30%). These inks are liquids with densities around 1 g/cm3, having various viscosities... | Toners; Inks; Photocopying; Laser printing; Flotation; Deinking; Recycling; Office waste; Hyrdophobicity | 1997 |
| 83 |
 |
Miller, Jan D. | Metal ion activation in xanthate flotation of quartz | Quartz cannot be floated with potassium amyl xanthate as collector at any pH. Complete flotation is achieved with certain minimal additions of amyl xanthate and Pbtt from pH 5.8 to 8.5 and with amyl xanthate and Znt+ from pH 7.5 to 8.1. The active species of these metal ions responsible for activ... | pH (Chemistry); Xanthate flotation; Metal ions | 1965 |
| 84 |
 |
Miller, Jan D.; Lin, Chen-Luh | Particle size distribution for copper heap leaching operations as established from 3D mineral exposure analysis by X-ray microCT | The particle size distribution (PSD) for copper heap leaching is an important consideration in the design and operation of any copper heap leaching facility. High-resolution 3D X-ray microtomography (XMT) can be used for the direct determination of the percentage of exposed valuable mineral grains i... | Particle size distribution; Leaching; X-ray microtomography | 2003 |
| 85 |
 |
Miller, Jan D. | Hydrophobicity and elemental composition of laser-printed toner films | Laser-printed toner films on a polymer support were treated with alkaline (NaOH) aqueous solutions at elevated temperature (80-85° C). These toner films were examined with a sessile-drop contact-angle measurement technique in order to establish the hydrophobicity of the toner surface. Also, X-ray p... | Ink; Fibers; Deinking | 1996 |
| 86 |
 |
Miller, Jan D. | Bench scale flotation of sedimentary phosphate rock with hydroxamic acid collectors | It 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 size | 2002 |
| 87 |
 |
Miller, Jan D. | Pilot-plant evaluation of a water insoluble hydroxamic acid collector for single stage flotation of Florida phosphate rock | Recent laboratory results have demonstrated that selective flotation of phosphate rock can be achieved in a single stage with improved separation efficiency when compared to the standard double float process. The new reagent chemistry is based on the use of a water insoluble alcoholic solution of ... | Phosphate rock; Flotation; Double float; Separation | 2006 |
| 88 |
 |
Rajamani, Raj | Online SAG mill pulse measurement and optimization semi-annual technical progress report | The 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 |
| 89 |
 |
Miller, Jan D. | Evaluation of a CT-based coal washability analysis system under simulated on-line conditions | The appropriate software and hardware necessary to adapt an X-ray CTanalyzerfor the determination of coal washability was developed and successfully tested for well-characterized samples under laboratory conditions. Evaluation of the CT-based analyzer under simulated on-line conditions is also prese... | Coal washability; Computer simulation; X-ray CT analysis | 2002 |
| 90 |
 |
Miller, Jan D. | Toner ink particle morphology in air-sparged hydrocyclone flotation deinking | A series of pulping and flotation deinking tests were performed using a pilot-scale air-sparged hydrocyclone (ASH) flotation cell and a toner ink printed furnish. Microscopy studies indicate ink particles in both the flotation accepts and rejects are relatively flat. Many of the ink particles ap... | Elongation; Cyclone; Particles | 1996 |
| 91 |
 |
Miller, Jan D. | Bubble generation in swirl flow during air-sparged hydrocyclone flotation | Air-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 variables | 1996 |
| 92 |
 |
Miller, Jan D. | Arsenic removal from contaminated waters | Arsenic 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; Biomac | 2005 |
| 93 |
 |
Miller, Jan D. | Direct three-dimensional liberation analysis by cone beam x-ray microtomography | Liberation of valuable minerals during size reduction is an important aspect of mineral processing technology. In practice, most quantitative information on liberation is based on the application of stereological theorems for the analysis of image data from two-dimensional polished sections. On th... | Mineral processing; Cone beam x-ray; Microtomography | 1997 |
| 94 |
 |
Miller, Jan D.;Yu, Qiang | Solvent refining of coal resin concentrates | Certain bituminous coals of the western United States are known to contain appreciable quantities of macroscopic resinite (fossil resin). Such resinous coals are found in the states of Arizona, Colorado, New Mexico, Utah, Washington, Wyoming, etc. Among these, the Wasatch Plateau coal field in ce... | | 1994 |
| 95 |
 |
Miller, Jan D. | Microscopic observations of bitumen spreading at gas bubble surfaces | Bitumen spreading at gas bubble surfaces was observed through a stereoscopic microscope for Whiterocks oil sand samples submerged in alkaline solutions. This phenomenon was also observed for model systems where air bubbles were placed al the surface of bitumen-coated quartz slide. Finally, the film ... | Hydrophobic minerals; Oil sand; Gas bubbles | 1995 |
| 96 |
 |
Chandran, Ravi | Microstructure and thermal conductivity of thermal barrier coatings processed by plasma spray and physical vapor deposition techniques | The temperature dependence of the thermal conductivity of multilayer coatings made by a plasma spray technique as well as some coatings made by physical vapor deposition (PVD) was investigated. The multilayer coatings consisted of a varying number of layers of AI2O3 and Zr02 stabilized by 8%Y203. Pl... | Thermal barrier coatings; Multilayer coatings; Plasma spray technique | 1996 |
| 97 |
 |
Miller, Jan D.; Wan, Rong Yu | Significance of carbon properties in the enhanced ferric sulfate leaching of CuFeS2/C aggregates | Acid 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 carbon | 1984 |
| 98 |
 |
Chandran, Ravi | Evolution of microstructure and phases in in-situ processed Ti-TiB composites containing high volume fractions of TiB whiskers | A series of titanium composites, with varying volume fractions of titanium monoboride (TiB) whiskers, were made by mixing various proportions of titanium (Ti) and titanium diboride (TiB2) powders followed by hot pressing. The phases present were identified by x-ray diffraction. | Morphology; diffraction; relative intensity | 1999 |
| 99 |
 |
Miller, Jan D. | Study of particle-bubble interaction using atomic force microscopy: current possibilities and challenges | Study of interaction forces between mineral particles and air bubbles is a key to understanding flotation processes. Measurement of such interaction forces has only recently been made possible with the introduction of the atomic force microscope (AFM) and the colloidal probe technique. Using AFM, in... | Particle-bubble interaction; Atomic Force Microscopy (AFM); Hydrophobic force; Contact angle; Hydrodynamic force | 2002 |
| 100 |
 |
Miller, Jan D. | Minerals beneficiation in '69 steps up tonnage, engineering, environmental control and automation: size analysis and flotation chemistry highlighted by basic science researchers | The application of computers to the control and study of mineral processing operations such as grinding, classification and notation has created an interest in simulation studies of these operations with mathematical models. Evidence of this interest is confirmed by papers presented at the 1969 Int... | Mineral processing; Computer simulations; Mathematical models | 1970 |
