DOE-energy related inventions program. Final report

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About five years ago development work began on a new concept for processing metal powders at high temperature under various special atmospheres, The process was called mechanical fluidization. The machine which performs the process is known as a Mechanical Fluidized Vacuum (MFV) machine because it is possible to fluidize material in a vacuum, something that heretofore was impossible. In an MFV machine, a horizontally disposed retort is two-thirds filled with material and rotated at a speed that keeps the material in a fluffed up or fluidized state. It`s turning a lot faster than a kiln, but not fast enough to ... continued below

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12 p.

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Kemp, W.E. May 13, 1998.

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Description

About five years ago development work began on a new concept for processing metal powders at high temperature under various special atmospheres, The process was called mechanical fluidization. The machine which performs the process is known as a Mechanical Fluidized Vacuum (MFV) machine because it is possible to fluidize material in a vacuum, something that heretofore was impossible. In an MFV machine, a horizontally disposed retort is two-thirds filled with material and rotated at a speed that keeps the material in a fluffed up or fluidized state. It`s turning a lot faster than a kiln, but not fast enough to cause the material to centrifuge outward and stick to the walls. In this mechanically fluidized state it was discovered that the thermal transfer rate between powders and amongst parts immersed in those powders is extremely fast, faster even than a gas fluidized bed despite the total lack of gas in the retort. Figure 1 compares the heat transfer rate in air, in a vibratory bed, in a gas fluidized bed and a rotary fluidized bed. As shown, the rotary fluidized bed heat transfer is much faster than all the others. Fluidization is entirely mechanical so no gas at all is required for fluidization; only the gas required for processing need be directed to the retort. It is possible to fluidize material in a vacuum - a feat heretofore impossible.

Physical Description

12 p.

Notes

OSTI as DE98005592

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  • Other Information: PBD: 13 May 1998

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  • Other: DE98005592
  • Report No.: DOE/EE/15666--T9
  • Grant Number: FG01-96EE15666
  • DOI: 10.2172/607514 | External Link
  • Office of Scientific & Technical Information Report Number: 607514
  • Archival Resource Key: ark:/67531/metadc692284

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 13, 1998

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 15, 2015, 5:05 p.m.

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Kemp, W.E. DOE-energy related inventions program. Final report, report, May 13, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc692284/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.