Publications and Patents
Selected Publications – MagMill
R. R. Oder, R. Hurst and R. E. Jamison, "Emissions Reduction and Plant Efficiency Improvement Using the MagMill", CD Proceedings, 25th Annual International Pittsburgh Coal Conference, Pittsburgh, PA (September 29-October 2, 2008).
R. R. Oder, R. Hurst and J. N. Ralston, Slide Presentation, "MagMill Processing of Coals at the DTEES Vicksburg Facility," Coal-Gen, Louisville, KY (August, 2008).
R. Hurst, R. R. Oder and J. Ralston, Slide Presentation: "Integrating Magnetic Separation into an Existing Pulverizer to Clean Coal," Coal-Gen, Milwaukee, WI (August, 2007).
R. R. Oder, Slide Presentation: "Reduction of Multi-Pollutant Emissions Using Existing Pulverizers," CD Proceedings, 10th Annual EUEC Conference, Tucson, AZ (January 2007).
R. R. Oder, Slide Presentation: "MagMill -- Emissions Reductions with Existing Pulverizers," Council of Industrial Boiler Owners, CD Proceedings, Industrial Emissions Control Technology IV, Toledo, OH (July 31-August 3, 2006).
R. R. Oder, "The Co-Benefits of Pre-Combustion Separation of Mercury at Coal-Fired Power Plants," Proceedings of the 98th Annual Conference and Exhibition, Air & Waste Management Association, Minneapolis, MN (June, 2005).
R. R. Oder, "The Use of Magnetic Forces to Upgrade Low Rank Coals," Upgrading Low Rank Coals Symposium, 2005 Coal & Aggregate Processing Exhibition and Conference, Lexington, KY (May, 2005).
R. R. Oder, Slide Presentation: “Dry Magnetic Separation of Ash, Sulfur and Mercury From a Southwestern Wyoming Coal,” 18th International Low-Rank Fuels Symposium, Billings, MT (June 24-26, 2003).
R. R. Oder, “Dry Magnetic Separation of Ash, Sulfur and Mercury From a Southwestern Wyoming Coal,” 18th International Low-Rank Fuels Symposium, Billings, MT (June 24-26, 2003).
R. R. Oder, "An Evaluation of the Alpha Prototype MagMill for Dry Coal Cleaning," Coal Preparation 22, No. 6 (2003) pp. 1-19.
R. R. Oder, "Dry Coal Cleaning in a MagMill™", Proceedings,19th Annual International Coal Preparation Exhibition and Conference Lexington, KY (April 30-May 2, 2002) pp. 187-200.
R. R. Oder, Slide Presentation: "Non-Hazardous Pre-Combustion Removal of Mercury at the Power Plant" presented at Electric Power 2002, St. Louis, MO, March 19-21, 2002.
R. R. Oder, R. E. Jamison and E. D. Brandner, "Dry Coal Cleaning with a MagMill™," Mining Engineering 53, No. 11, November, 2001, pp. 47-51. Reprinted with permission from SME.
R. R. Oder, E. D. Brandner and R. E. Jamison, "Concentration of Trace Metals Inside Coal Pulverizers," Proceedings of the 11th International Conference on Coal Science, San Francisco, CA (September 30-October 5, 2001) U.S. Department of Energy CD DOE/NETL-2001/1153.
R. R. Oder, E. D. Brandner, and R. E. Jamison, "Removal of Selected Hazardous Air Pollutant Precursors by Dry Magnetic Separation," Final Report, U.S. Department of Energy Contract DE-AC26-99FT40156 (June, 2001).
R. R. Oder, "Pre-Combustion Removal of Ash-Forming Minerals from Coal at Pulverized Coal Fired Power Plants," Appearing in Effects of Coal Quality on Power Plant Management: Ash Problems, Management and Solutions, United Engineering Foundation, Inc., New York, NY, and EPRI, Palo Alto, CA: 2001, 1001402 (March, 2001) pp.1-7 -- 1-21.
E. D. Brandner, R. R. Oder, and R. E. Jamison, "Removal of Selected Hazardous Air Pollutant Precursors by Dry Magnetic Separation," Proceedings of the 25th International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, FL (March 6-9, 2000), pp. 187-194.
R. R. Oder, E. D. Brandner, and R. E. Jamison, "MagMill™ Prototype Testing," Proc., 25th International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, FL (March 6-9, 2000), pp. 51-59.
R. R. Oder, R. E. Jamison and E. D. Brandner, "Preliminary Results of Pre-Combustion Removal of Mercury, Arsenic, and Selenium from Coal by Dry Magnetic Separation," Proc., 24th International Technical Conference on Coal Utilization & Fuel Systems, Clearwater, FL (March 8-11, 1999), pp. 151-158.
R. R. Oder and Y. Feng, "Dry Coal Cleaning in a MagMill™," Proc., U.S. DOE FETC 1997 Coal Liquefaction & Solid Fuels Contractors Conference," Pittsburgh, PA (September 3-4, 1997).
Y. Feng, R.R. Oder, R.W. DeSollar, E.A. Stephens, Jr., G.F. Teacher, and T.L. Banfield, "Dry Coal Cleaning In a MagMill™," in Proc., 22nd International Conference on Coal Utilization & Fuel Systems, March 17-19, 1997, Clearwater, FL (Coal & Slurry Technology Association, Washington, DC) 1997.
Selected Publications – Magnetic Separation
R. R. Oder, "Dry Magnetic Desulfurization of Coal," Proc., EPRI Workshop on Advanced Physical Coal Cleaning: A State-of-the-Art Review, Held in conjunction with the 6th Annual International Pittsburgh Coal Conference, Pittsburgh, PA (September 25, 1989).
R. R. Oder and C. R. Price, "Brightness Beneficiation of Kaolin Clays by Magnetic Treatment," TAPPI 56, 75 (1973).
Selected Publications – Recovery of Nanometer Particles
R. R. Oder, “Magnetic Separation of Nanometer Size Iron Catalyst from Fischer-Tropsch Wax,” Appearing in Fischer-Tropsch Synthesis, Catalysts and Catalysis, ed. B.H. Davis and M. Occelli, Vol. 163 in Studies in Surface Science and Catalysis, Elsevier (Nov. 2006) ISBN-13: 978-0-444-52221-4.
R. R. Oder, "Novel Magnetic Method for Separation of Iron Catalysts from Fischer-Tropsch Wax," CD Proceedings, 23rd Annual Pittsburgh Coal Conference, Pittsburgh, PA (September, 2006) ISBN 1-890977-23-3.
R. R. Oder, "Magnetic Separation of NM Iron Catalyst from Fischer-Tropsch Wax," Proceedings, 2005 Annual Meeting, American Chemical Society, Division of Petroleum Chemistry, San Diego, CA (March, 2005).
R. R. Oder, "Magnetic Separation of Iron Catalysts from Fischer-Tropsch Wax," Proceedings of the 2004 Annual Meeting, American Chemical Society, Division of Petroleum Chemistry, Anaheim, CA (March, 2004).
R. R. Oder and R. E. Jamison, "Magnetic Separation of Catalysts from Fischer-Tropsch Wax," Final Report, U.S. Department of Energy, Small Business Innovation Research Program, Phase II Grant DE-FG02-00ER83008 (December, 2003).
R. R. Oder, R. E. Jamison, and C. A. Znati, “Separation of Iron Catalysts from Fischer-Tropsch Wax,” Proceedings of the 20th Annual Pittsburgh Coal Conference: Coal, Energy and the Environment, Pittsburgh, PA (September 15-19, 2003).
Selected Publications – VacuMag Separator for Fly Ash Separation
E. D. Brandner, R. R. Oder and R. E. Jamison, "A New Fly Ash Separator Combining Magnetic Forces with Air Drag," Proceedings of the International Ash Utilization Symposium, Lexington, KY (October, 2003), ISBN 0-967 4971-5-9, www.flyash.org.
Selected Publications – MagneCoal
R. R. Oder, "Emulsions Breaking with Magnetic Fields," Proceedings of the 18th Annual Conference, American Filtration Society, Atlanta, GA (April, 2005).
Selected Publications – Modified Air Jig
R. R. Oder, R. S. Weinstein and R. J. Snoby, "Combined Air Jig and Dry Magnetic Separator for Cleaning Coal," Proceedings of the 20th Annual Pittsburgh Coal Conference: Coal, Energy and the Environment, Pittsburgh, PA (September 15-19, 2003).
R. Weinstein, R. Snoby and R. R. Oder, “Combining Technologies to Make Lignite into a Premium Fuel,” 18th International Low-Rank Fuels Symposium, Billings, MT (June 24-26, 2003).
Selected Publications – Miscellaneous
R. R. Oder, L. Kulapadithoram, A. K. Lee and E. L. Ekholm, “Technical and Cost Comparisons for Chemical Coal Cleaning Processes,” American Mining Congress Journal 63, No. 8, pp. 42-49 (August, 1977).
Patents
Robin R. Oder and Richard S. Weinstein, "Air Jig for Separation of Minerals from Coal," U.S. Patent 7,367,456 (May 6, 2008).
Abstract: An improved air jig apparatus and method is disclosed in which a dry magnetic separator is used to separate paramagnetic and ferromagnetic minerals from the dust component of coal cleaned with the air jig. The cleaned product of the dry magnetic separator is combined with the cleaned product of the air jig thereby improving both the quality and the quantity of the unmodified air jig product. The dry magnetic separator may be of a variety of types including but not limited to separators made from permanent magnets, electromagnets, and superconducting magnets, each of which may also employ triboelectric and/or aerodynamic means to enhance the separation of the dust material.
Robin R. Oder and Russell E. Jamison, "Continuous Magnetic Separator and Process," U.S. Patent 7,360,657 (April 22, 2008)
Abstract: A continuous magnetic separator and process for separating a slurry comprising magnetic particles into a clarified stream and a thickened stream. The separator has a container with a slurry inlet, an overflow outlet for the discharge of the clarified slurry stream, and an underflow outlet for the discharge of a thickened slurry stream. Magnetic particles in the slurry are attracted to, and slide down, magnetic rods within the container. The slurry is thus separated into magnetic concentrate and clarified slurry. Flow control means can be used to control the ratio of the rate of magnetic concentrate to the rate of clarified slurry. Feed control means can be used to control the rate of slurry feed to the slurry inlet.
Robin R. Oder and Russell E. Jamison, "Method and Apparatus for Separating Material," U.S. Patent 7,124,968 (October 24, 2006).
Abstract: An apparatus for sorting particles composed of a mixture of particles with differing physical and chemical characteristics. The apparatus includes a comminutor for reducing the size of the particles. The apparatus includes a mechanism for removing particles from the inside of the comminutor which are intermediate in size between the feed to the comminutor and the product of comminution. The apparatus includes a mechanism for either discharging particles taken from the comminutor to a reject stream or providing them to a size classification apparatus such as screening, a mechanism for returning the oversize particles to the comminutor or for discharging them to the reject stream, an electric mechanism for separating particles with an electrical force disposed adjacent to a magnet mechanism, a mechanism for providing the particles to the magnet mechanism and the electric mechanism and for providing triboelectric and capacitive charges to the particles, and a mechanism for returning one of the products of electric and magnetic separation to the comminutor while discharging the other to the reject stream. A method for sorting particles composed of a mixture of particles with differing physical and chemical characteristics.
Robin R. Oder and Russell E. Jamison, "Method and Apparatus for Separating Material," U.S. Patent 6,820,829 (November 23, 2004). Also issued in South Africa (South Africa 2002/6310, October 29, 2003); Australia (Australia 2001241659, August 10, 2006); India (India 206729, May 10, 2007).
Abstract: An apparatus for sorting particles composed of a mixture of particles with differing physical and chemical characteristics. The apparatus includes a comminutor or a pulverizer for reducing the size of the particles. The apparatus includes a mechanism for separating undesired material from desired material.
Robin R. Oder and Russell E. Jamison, "Method and Apparatus for Sorting Particles with Electric and Magnetic Forces," U.S. Patent 6,540,088 (April 1, 2003).
Abstract: An apparatus for sorting particles. The apparatus includes a magnet mechanism for separating the particles with a magnetic force. The apparatus includes an electric mechanism for separating particles with an electrical force disposed adjacent to the magnet mechanism. The apparatus includes a mechanism for providing the particles to the magnet mechanism and the electric mechanism. The providing mechanism is engaged with the magnet mechanism and the electric mechanism. A method for sorting particles. The method includes the steps of providing the particles to a magnet mechanism and electric mechanism disposed adjacent to the magnet mechanism. Then there is the step of separating the particles with the magnetic force from the magnet mechanism and the electric force from the electric mechanism.
Robin R. Oder and Russell E. Jamison, "Method and Apparatus for Breaking Emulsions of Immiscible Liquids by Magnetostatic Coalescence," U.S. Patent 5,868,939 (February 9, 1999).
Abstract: A method and apparatus for breaking emulsions using magnetic fields to promote magnetostatic coalescence. The method includes use of a magnetic additive soluble or dispersable in the dispersed phase of the emulsion and a second additive for promoting coalescence of the dispersed phase droplets when acted on by a magnetic field. The apparatus includes a continuously operating high gradient magnetic coalescer having a plurality of magnetic elements therein oriented vertically which are magnetized transverse to their lengths for treating emulsions containing large amounts of internal phase. The magnetized elements serve to attract droplets of the internal phase to their surfaces, where they coalesce under magnetic compression force, and to provide a pathway for drainage of the coalesced droplets from the separator. Additionally the apparatus includes a magnetic field assisted settler for treating emulsions with intermediate water content. The apparatus further includes magnetic filters for removing the final amounts of the internal phase and for recovering the magnetic additives for reuse in the process.
Robin R. Oder, "Method of Magnetic Separation and Apparatus Therefore," U.S. Patent 5,176,260 (January 5, 1993).
Abstract: An improved method of dry magnetic separation for separating materials of different types and levels of magnetism from a raw sample is disclosed. The method includes precleaning the raw sample by first extracting a strongly magnetic fraction from a feebly magnetic fraction, followed by additional processing steps for the extraction of the feebly magnetic fraction and the collection of refined samples for each fraction so separated. The recovered fractions are then analyzed for magnetic susceptibilities and are correlated to at least one identifying physical and/or chemical characteristic in order to determine which fraction or fractions are to be recovered for further processing. Following that determination, the recovered fraction or fractions are processed for an additional magnetic separation step in order to yield a clean fraction.
Sheng-Ming B. Chi and Robin R. Oder, "Particulate Separations by Electrostatic Coalescence," U.S. Patent 5,147,045 (September 15, 1992).
Abstract: The use of electrostatic demulsification methods to separate fine particulates of differing surface characteristics is disclosed. In one example, particles of hydrophobic coal and hydrophilic kaolin clay, each of nominal 3.5 micron mass mean particle diameter, were separated from a variety of stable water-in-oil emulsions. 50/50 blends of coal of 4% ash and kaolin clay of 86.5% ash were used in the experiments. A variety of oils, water concentrations, solids concentrations, and emulsifiers have been used in this work. Externally applied electrostatic fields up to 1.2 kV/cm were used. Greater than 90% rejection of kaolin particles into the separated water phase was achieved with virtually complete recovery of the coal particles uniformly suspended in the oil phase. Under conditions resulting in the most efficient separation, we have observed that the coalesced water phase appeared as intertwined cylindrical tubes extending between electrodes, as opposed to nonconnected and chained droplets which have been reported by others. The fine kaolin particulates were observed to be water-encased while most coal particles remained dispersed in the oil continuum.
Robin R. Oder, "Method of Magnetic Separation and Apparatus Therefore," U.S. Patent 5,127,586 (July 7, 1992).
Abstract: A method and apparatus for magnetically beneficiating a raw sample, such as coal or lunar soil is disclosed. The beneficiation is achieved using a novel method of fractionating the sample into components of different magnetic susceptibilities. The results of the fractionation may be used to determine the type of magnet to be employed for large scale operations, as well as the appropriate fraction or fractions to be recovered for further processing.
Robin R. Oder, "Method of Magnetic Separation and Apparatus Therefore," U.S. Patent 5,017,283 (May 21, 1991).
Abstract: An apparatus for magnetically separating and collecting particulate matter fractions of a raw sample according to relative magnetic susceptibilities of each fraction so collected is disclosed. The separation apparatus includes a splitter which is used in conjunction with a magnetic separator for achieving the desired fractionation.
Robin R. Oder, "Preparation of Coal Substitute of Low Ash and Low Sulfur," U.S. Patent 4,830,634 (May 16, 1989).
Abstract: A process is taught for preparing a coal substitute of low ash level from a composite of coal, mineral matter and pyritic sulfur comprising comminuting the coal composite in an aqueous medium to a size range which promotes the liberation of the mineral matter; subjecting the resulting slurry to fines agglomeration in the presence of a water-insoluble bridging organic liquid; separating the agglomerates from the liquid phase containing the bulk of the mineral matter and a portion of the pyritic sulfur; treating the coal fines by stripping the organic liquid from the fines surface; and redispersing the fines in an aqueous medium having a surface active agent to yield a high solids coal fines slurry so as to permit magnetic separation of residual pyritic sulfur and other magnetic mineral matter.
Contact Dr. Robin R. Oder for copies of the following publications:
Selected Publications – Magnetic Separation
R. R. Oder, "Dry Magnetic Beneficiation of Pennsylvania Coal," Proc., 4th Annual Pittsburgh Coal Conference, 1987, pp. 359-371.
R. R. Oder, "Engineering Aspects of Dry Magnetic Separation," appearing in Novel Concepts, Methods and Advanced Technology in Particulate-Gas Separation, Proc., Workshop held at the University of Notre Dame, Notre Dame, Indiana, April 20-22, 1977. ed. by Teoman Ariman, pp. 108-139, University of Notre Dame (August, 1978).
R. R. Oder, "High Gradient Magnetic Separation: Theory and Applications," IEEE Transactions on Magnetics, Vol. MAG-12, No. 5, pp. 418-425 (September, 1976).
Selected Publications – Lunar Soils
R. R. Oder, J. Graf, L. A. Taylor, and D. S. McKay, "Magnetic Beneficiation of Lunar Material," in the Proc., Third Annual Symposium of the University of Arizona/NASA Space Engineering Research Center for Utilization of Local Planetary Resources, Tucson, AZ (February 20-22, 1992), pp. III-15 to III-23.
R. R. Oder, "Beneficiation of Lunar Soils: Case Studies in Magnetics," Minerals & Metallurgical Processing (August, 1992) pp. 119-130. Reprinted with permission from SME.
R. R. Oder, "Magnetic Separation of Lunar Soils," IEEE Transactions on Magnetics 27, No. 6 (November, 1991), pp. 5367-5370.
R. R. Oder and L. A. Taylor, "Magnetic Beneficiation of Highland and HI-Ti Mare Soils: Magnet Requirements," Engineering, Construction and Operations in Space II, Proc., Space 90, Albuquerque (April, 1990), Edited by S. W. Johnson and J. P. Wetzel (American Society of Civil Engineers, New York, 1990) pp. 133-142.
L. A. Taylor and R. R. Oder, "Magnetic Beneficiation of Highland and HI-Ti Mare Soils: Rock, Mineral and Glassy Components," Engineering, Construction and Operations in Space II, Proc., Space 90, Albuquerque (April, 1990), Edited by S. W. Johnson and J. P. Wetzel (American Society of Civil Engineers, New York, 1990) pp. 143-152.
L. A. Taylor and R. R. Oder, "Magnetic Beneficiation of HI-Ti Mare Soils: Concentrations of Ilmenite and Other Components," Lunar and Planetary Science XXI, Houston, Texas (March, 1990) pp. 1245-1246.
Selected Publications – Pitt Mill
L. A. Borzone and R. R. Oder, "Cost Factors in Fine Grinding of Coal," Coal Preparation 10, (1992) pp. 133-144.
R. R. Oder and R. J. Gray, "The Effects of Coal Characteristics on Fine Grinding in a Pitt Mill," Chapter 48 in Symposium on Comminution -- Theory and Practice, ed. by S. K. Kawatra (SME, Littleton, CO, 1992) pp. 661-675
R. J. Gray and R. R. Oder, "Measurement of Coal Grinding Characteristics in a Pitt Mill," Proc., 9th International Coal Testing Conference, Lexington, KY (March 17-19, 1992) pp. 18-26.
L. A. Borzone, R. R. Oder, and J. T. Hagy, "Fine Grinding of Coal Using the Pitt Mill," Proc. 7th International Pittsburgh Coal Conference, Pittsburgh, PA (September 10-14, 1990), pp. 643-652.
J. T. Hagy and R. R. Oder, "Pitt Mill Demonstration," Proc., 14th International Conference on Coal & Slurry Technology, Clearwater, Florida, April 24-29, 1989 (Coal & Slurry Technology Association, Washington, D.C., 1989), pp. 473-482.
Selected Publications – Electrostatic Coalescence
S-M. B. Chi, J. T. Mang, and R. R. Oder, "Application of Electrostatic Coalescence in Fine Coal Cleaning," Proc., International Conference on Coal Science, Tokyo, Japan (October 23-27, 1989), pp. 991-994.
L. Borzone, R. R. Oder, J. T. Mang, and S-M. B. Chi, "Particle Separations by the ElectroCoal Process," in Solid/Liquid Separation: Waste Management and Productivity Enhancement, ed. by H. S. Muralidhara (Battelle Press, Columbus, 1989), pp. 521-526.
J. T. Mang and R. R. Oder, "Coal Beneficiation by Electrostatic Coalescence," in Processing and Utilization of High Sulfur Coals III, ed. by R. Markuszewski and T.D. Wheelock (Elsevier Science Publishers, B.V., Amsterdam, 1990), pp. 341-350.
Selected Publications – Miscellaneous
R. R. Oder, "Magnetic Desulfurization of Liquefied Coals: Conceptual Process Design and Cost Estimation," IEEE Transactions on Magnetics, Vol. MAG-12, No. 5, pp. 532-537 (September, 1976).