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Creator | Title | Description | Subject | Date |
| 176 |
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Miller, Jan D. | Understanding the agglomeration behavior of nickel laterite and gold ores using statistical design of experiments | The drum agglomeration of nickel laterite and gold ores has been optimized through the design of experiments (DOE) using a Taguchi L16 (45) orthogonal array to determine the optimum conditions for maximizing average agglomerate size and minimizing the amount of fines. The effects of controllable ope... | | 2014-01-01 |
| 177 |
 |
Miller, Jan D. | Significance of electrokinetic characterization for interpreting interfacial phenomena at planar, macroscopic interfaces | Streaming potential measurements provide valuable information for the validation and interpretation of interfacial phenomena that occur at flat macroscopic surfaces. Planar substrates have been extensively used for the interpretation of events, which occur at particulate surfaces; however, these fla... | Interfacial phenomena; Surface charge | 2005 |
| 178 |
 |
Brown, Francis Harold | Observations on the stratigraphy and rediometric age of the omo beds, lower omo basin, southern Ethiopia | During September and October, 1966, the author measured a stratigraphic section for a portion of the Omo Beds, as exposed north of Kalam, Ethiopia. Additional field observations were also made at the time in other parts of the lower Omo Basin. Samples were collected for analysis and for radiometric ... | | 1969 |
| 179 |
 |
Miller, Jan D. | Gold flotation from Colorado River sand with the air-sparged hydrocyclone | Pilot-scale tests indicate that effective concentration of fine gold from Colorado River sands can be achieved by flotation with the air-sparged hydrocyclone. The fine sands (55% -kOQ mesh and 0 01 opt *) from gravity concentration were processed with a 5-cm air-sparged hydrocyclone (capacity -1.0 t... | Gold; Hydrocyclones; Sand; Flotation | 1986 |
| 180 |
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Miller, Jan D. | Importance of bitumen viscosity in the hot-water processing of domestic tar sands | The separation efficiency of the hot water digestion-flotation technique used for bitumen recovery from various domestic tar sands was evaluated. Bitumen viscosity was found to be the most important tar sand property in determining the success of the bitumen separation. Bitumen viscosity of the tar ... | Tar sand; Bitumen viscosity; Flotation; Hot-water processing | 1983 |
| 181 |
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Miller, Jan D. | Selective flotation of fossil resin from Wasatch Plateau high-volatile bituminous coal | Certain 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; Resin | 1989 |
| 182 |
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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 |
| 183 |
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Miller, Jan D.; Nalaskowski, Jakub | Flotation chemistry and technology of nonsulfide minerals | The 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 minerals | 2007 |
| 184 |
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Miller, Jan D. | Characterization of spherical alumina particles obtained by melting in a hydrogen-oxygen flame | Spherical 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 flame | 2003 |
| 185 |
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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 |
| 186 |
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Solomon, Douglas Kip | Evaluating the use of strontium isotopes in tree rings to record the isotopic signal of dust deposited on the Wasatch Mountains | Dust cycling from the Great Basin to the Rocky Mountains is an important component of ecological and hydrological processes. We investigated the use of strontium (Sr) concentrations and isotope ratios (87Sr/86Sr) in tree rings as a proxy for dust deposition. We report Sr concentrations and isotope r... | | 2014-01-01 |
| 187 |
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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 |
| 188 |
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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 |
| 189 |
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Miller, Jan D. | Hydrophobic character of semisoluble salt minerals with oleate as collector | The effects of temperature, oxygen partial pressure, and solution chemistry can have a significant effect on the hydrophobic character of semisoluble salt minerals with adsorbed oleate. Measurements of bubble-attachment time and contact angle reveal the sensitivity of these hydrophobic surfaces to c... | Flotation; Solution; Oleate | 1984 |
| 190 |
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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 |
| 191 |
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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 |
| 192 |
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Miller, Jan D. | Solvent extraction reagents for gold recovery from alkaline cyanide solutions | Three different solvent extraction systems for the recovery of gold from alkaline cyanide solutions are reviewed. These include the modified amine extractants in which the basicity of simple alkyl amines, with respect to the aurocyanide anion, is controlled by the addition of alkyl phosphorous ester... | Solvents; Extraction; Gold; Alkaline cyanide; Amine extractants; Solvating extractants; Substituted guanidines | 1993 |
| 193 |
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Fernandez, Diego P. | Deep-sea scleractinian coral age and depth distributions in the Northwest Atlantic over the last 225,000 years | Deep-sea corals have grown for over 200,000 yrs on the New England Seamounts in the northwest Atlantic, and this paper describes their distribution both with respect to depth and time. Many thousands of fossil scleractinian corals were collected on a series o f cruises from 2003- 2005; by contrast,... | Desmophyllum dianthus; Scleractinian coral; Seamounts; Northwest Atlantic | 2007 |
| 194 |
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Miller, Jan D. | Modulated Cr(III) oxidation in KOH solutions at a gold electrode: competition between disproportionation and stepwise electron transfer | The electrochemical oxidation of aqueous Cr(III) was examined using cyclic voltammetry with a polycrystalline Au electrode in KOH solutions of varying pH and Cr(III) concentration. The mechanism and kinetics for the oxidation of Cr(III) is a quasi-reversible diffusion-controlled reaction and is larg... | | 2011-01-01 |
| 195 |
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Miller, Jan D. | Thermogravimetric/Mass spectrometric (TG/MS) characterization of toner particles from photocopied wastepaper and the impact of these features on flotation deinking | Flotation 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 particles | 1995 |
| 196 |
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Miller, Jan D. | Mineral processing fundamentals | The reported claims in several Russian articles that magnetic fields change the viscosity and other basic properties of water and as a result produce beneficial effects such as increased flotation rate, improved grades and recovery, and increased settling rates appear to be unfounded. This conclusi... | Minerals; Processing; Magnetic fields; Metallurgy; Water | 1971 |
| 197 |
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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 |
| 198 |
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Miller, Jan D. | Flotation behavior of chromium and manganese minerals | Flotation behavior of chromite and manganese-bearing minerals has been reviewed. Flotation of these minerals and ores with fatty acids, amines, sulfates, sulfonates and hydroxamates has been presented and is discussed in terms of surface charge and chemical interaction between the mineral surface ... | Concentration; Chromite; Deposits | 1986 |
| 199 |
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Miller, Jan D. | Treatment of cyanide by using the Mexican modification of the Merrill-Crowe process | Cyanide consumption can be a major factor which contributes to operating cost for cyanidation. Also after extraction and recovery of precious metals substancial amounts of cyanide are delivered to tailings ponds which creates environmental problems due to the toxicity of cyanides. In this regard, th... | Cyanidation; Merrill-Crowe process; Air-sparged hydrocyclone; Cyanide recovery; Cyanide destruction; Chlorine dioxide | 1999 |
| 200 |
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Miller, Jan D. | Concentration | The most startling development in concentration processes this past year would have to be the results obtained after magnetic treatment of aqueous systems. Beneficial effects were reported in both flotation and thickening on an industrial scale following the application of a magnetic field to ... | Concentration; Aqueous systems; Pulp; Magnetic treatment | 1969 |
