2 edition of Physical desulfurization of fine-size coals on a spiral concentrator found in the catalog.
Physical desulfurization of fine-size coals on a spiral concentrator
John E Zeilinger
Based on work in cooperation with the Office of Air Programs, Environmental Protection Agency
|Statement||by J. E. Zeilinger, Pittsburgh Energy Research Center, ERDA, and A. W. Deurbrouck, Coal Preparation and Analysis Group|
|Series||Report of investigations - Bureau of Mines ; 8152|
|Contributions||Deurbrouck, A. W., jt. auth, United States. Bureau of Mines|
|The Physical Object|
|Pagination||, ii, 18 p. :|
|Number of Pages||18|
Spiral concentrators have been widely used in coal preparation plants in Illinois and elsewhere to clean 1 mm × μm particle size coal fraction. The major factors which have made spiral concentrator so popular include its low capital and operating cost, no chemical reagent or dense medium requirement, and the ease of operation/maintenance. The two coal samples are selected to represent two categories: one with high organic sulfur and low ash (Baragolai) and the other with low organic sulfur and high ash (Ledo) coals of the region The desulfurization routes are comprised of oxidation of two coal samples of various size fractions in an oxidative medium (H2O2 and HCOOH) followed by solvent extraction (dimethyl formamide, .
As stated in the conclusion of the Bureau of Mines Report of Investigations (RI ) J. E. Zeilinger and A. W. Deurbrouck entitled "Physical Desulfurization of Fine Size Coals by a Spiral Concentrator", "The spiral, although not generally considerd as a coal-washing device, deserves further investigation because of" its apparent economic advantages. Coal before utilization is subjected to some physical, chemical and biological desulfurization methods. However, physical and biological methods are ineffective and time consuming and they can be applied only on the bench scale. Most of the effective coal desulfurization techniques are based on chemical methods.
Spiral Concentrator Application for Ultrafine Coal Cleaning Recent studies have found that spirals such as the SX7 can provide an effective gravity-based separation performance for mesh coal. Required volumetric flow rate is around 15 gpm/start and feed solids content should be nearly 15% by weight. Currently, two U.S. coal. Coal is the primary source of energy for most of the countries in the world. Although the main use of coal is in the generation of electricity, recently synthesis of liquid fuel from coal is becoming attractive, although coal liquefaction is a very old and well known process that was developed just after World War I.
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Physical desulfurization of fine-size coals on a spiral concentrator. [Washington]: U.S. Dept. of the Interior, Bureau of Mines,  (OCoLC) Online version: Zeilinger, John E. Physical desulfurization of fine-size coals on a spiral concentrator.
[Washington]: U.S. Dept. of the Interior, Bureau of Mines,  (OCoLC) Material Type. This Bureau of Mines study was conducted to determine the sulfur reduction potential attainable when washing fine-size coal on a spiral concentrator. Crushed samples of Middle Kittanning and bakerstown bed coals washed on the spiral provided pyritic sulfur reductions of up to 90 percent for the plus mesh material.
A study was conducted to determine the sulfur reduction attainable by washing fine-size coal on a spiral concentrator. Crushed samples of Middle Kittanning and Bakerstown bed coals washed on the spiral provided pyritic sulfur reductions of up to 90 percent for the plus mesh material.
Physical desulfurization of fine-size coals on a spiral concentrator / By John E. Zeilinger, joint author. Physical Desulfurization of Fine-size Coal on a Spiral. This Bureau of Mines study was conducted to determine the sulfur reduction potential attainable when washing fine-size coal on a spiral concentrator.
Crushed samples. Get Price. This book was written to provide a comprehensive survey of the current state-of-the-art information in coal preparation, with particular emphasis on coal desulfrization.
The primary audience for this book will be practising coal preparation engineers who need complete information about all of the coal preparation and desulphurization technologies that are available now, or that may be 5/5(1).
(). Spiral Concentrators for Fine Coal Treatment. Coal Preparation: Vol. 1, No. 2, pp. Several chemical and physical cleaning methods for removing sulfur and ash-forming mineral matter from various kinds of bituminous coal were investigated. These methods involved grinding coal to a fine size to expose or liberate the mineral matter and either physical separation or chemical leaching of the resulting particles.
By combining these. In coal combustion, to generate electric power and process heat, the sulfur is emitted as SO2, which is seen as one of the main causes of acid rain. This effect has led to an interest in the three main methods of removing coal sulfur: coal cleaning, in-bed desulfurization, and flue gas desulfurization.
Coal cleaning includes physical, chemical. Spiral Concentrator Iron Ore Flow Sheet. Spiral Concentrator For Fines Material. Spiral concentrator iron ore flow sheet the sample particle distribution across the trough in every turn of spiral concentrator the material was plant spiral hc1rs and fine mineral spiral online spiral concentrator.
Uslu, Sahinoğlu, and Yavuz () investigated the desulfurization and cleaning of oxidized fine coals in the Knelson Concentrator. They achieved %, %, and % of combustible. Coal before utilization is subjected to some physical, chemical and biological desulfurization methods.
However, physical and biological methods are ineffective and time consuming and they can be. Physical desulfurization of fine-size coals on a spiral concentrator [Washington]: US Dept of the Interior, Bureau of Mines,  (OCoLC) Online version: Zeilinger, John E, WorldCat is the world's largest library catalog, helping you find library materials online.
Multotec has designed and optimised both single (SX4) and double (SX7 and MX7) coal spiral concentrators that are supplied with steel rubber-lined or PVC/polyurethane pipe launder spiral models each have different combinations and have been developed to suit the coal quality. As stated in the conclusion of the Bureau of Mines Report of Investigations (RI ) J.
Zeilinger and A. Deurbrouck entitled "Physical Desulfurization of Fine Size Coals by a Spiral. Spiral concentrators are normally used in banks of multiple spirals. Typical capacities for spirals run from tons per hour of feed for minerals and tons per hour for coal.
Typical construction of a spiral concentrator is fiberglass and urethane to reduce wear from abrasion. Journals & Books; Register Sign in. Coal Prep., 6(1/2): Zeilinger, J.E.
and Deurbrouck, A.W., Physical Desulfurization of Fine Size Coals on a Spiral Concentrator. Report of Investigation USBM Recommended articles A.W. DeurbrouckPhysical Desulfurization of Fine Size Coals on a Spiral Concentrator.
Report of. This book was written to provide a comprehensive survey of the current state of the art in coal preparation, with particular emphasis on coal desulfurization. Such a book has not been available since Robert Meyers wrote Coal Desulfurization inand considerable advances have been made in the more than 20 years since then.
Coal combustion is the largest single source of sulfur oxide pollution. Treatment of some major representative U.S. coals with aqueous ferric solution removes 40 to 75 percent of the sulfur content through near quantitative oxidation of the pyritic sulfur contained in the coal matrix.
Elemental sulfur and iron sulfate are recovered as products of the reaction. The Spiral concentrator has performed better at feed pulp density of 30% by producing concentrate of high grade (%) and with highest recoveries of 96%.
The desliming of raw sand has been done using using hydrocyclone. When the deslimed feed is fed to the spiral, high concentrate grades has been produced with very high recoveries as high as 98%.
Zeilinger, J.E. & Deurbrouck, A.W., Physical desulfurization of fine size coals on a spiral concentrator, Report of h~vestigation USBM().
Geer, M.R., et. al., Performance of dense medium cyclone in cleaning fine coal, Report of b~vestigation USBM 5().double stage (MX7 and SX7) Coal Spiral Concentrators to treat a size range of to mm. The Multotec two-stage spirals (MX7 and SX7) incorporate two stages of spiralling into a single spiral assembly.
This has the advantage of reduced plant height and floor space requirements, as well as reduced capital and operating costs.The paper mainly introduces the desulfurization technology before coal combustion and gives a brief analysis of principles, advantages and disadvantages of the three current coal desulfurization technologies: physical desulfurization, chemical desulfurization and biological desulfurization.
Finally, this paper puts forward some views on the development trend of coal desulfurization .