OPTIMIZATION OF COMMINUTION CIRCUIT THROUGHPUT AND PRODUCT SIZE DISTRIBUTION BY SIMULATION AND CONTROL

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Description

The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing the product size distribution, so that the amount of excessively fine material produced can be minimized. The goal is to save energy by reducing the amount of material that is ground below the target size, while simultaneously reducing the quantity of materials wasted as ''slimes'' that are too fine to be useful. This is being accomplished by mathematical modeling of the grinding circuits to determine how to correct this ... continued below

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10 pages

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Walqui, H.J.; Eisele, T.C. & Kawatra, S.K. July 1, 2004.

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Description

The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing the product size distribution, so that the amount of excessively fine material produced can be minimized. The goal is to save energy by reducing the amount of material that is ground below the target size, while simultaneously reducing the quantity of materials wasted as ''slimes'' that are too fine to be useful. This is being accomplished by mathematical modeling of the grinding circuits to determine how to correct this problem. It has been determined that, for mixtures of approximately equal quantities of high-density minerals (such as iron oxides) and low-density minerals (such as quartz), existing hydrocyclone models fail to accurately predict the hydrocyclone behavior. Since the hydrocyclone is the key unit controlling the particle size, an accurate model of these units is required and is being fully developed. Experimental work has demonstrated that the previous models are inaccurate due to incorrect assumptions concerning the change in hydrocyclone cut size as a function of changing particle density.

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10 pages

Notes

OSTI as DE00831080

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  • Other Information: PBD: 1 Jul 2004

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  • Report No.: NONE
  • Grant Number: FC26-01NT41062
  • DOI: 10.2172/831080 | External Link
  • Office of Scientific & Technical Information Report Number: 831080
  • Archival Resource Key: ark:/67531/metadc784734

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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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  • July 1, 2004

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

Description Last Updated

  • Feb. 20, 2017, 1:42 p.m.

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Walqui, H.J.; Eisele, T.C. & Kawatra, S.K. OPTIMIZATION OF COMMINUTION CIRCUIT THROUGHPUT AND PRODUCT SIZE DISTRIBUTION BY SIMULATION AND CONTROL, report, July 1, 2004; [Houghton, Michigan]. (digital.library.unt.edu/ark:/67531/metadc784734/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.