The comminution of multicomponent feeds under batch and locked-cycle conditions: Kinetics, simulation and energy distribution

Details

• Personal Author:
  Fuerstenau DW ; Venkataraman KS
• Description:
  The results of a detailed investigation of batch and locked-cycle dry grinding of quartz-calcite mixtures in a laboratory ball mill are presented. Batch grinding tests showed that the breakage rate function of the components is time-independent but composition-dependent and is normalizable with specific energy. Locked-cycle tests on the mineral mixtures revealed that approximately 25 2-min cycles are required before the composition of the circuit product and the recycle material attains steady state. The circulating load, after steadily increasing during the first 15 cycles, continued to fluctuate over a narrow range. These findings indicate that industrial-scale grinding circuits may also have long transient periods as the grindability of the ore changes and that circuits might be in transience perpetually. [Description provided by NIOSH]
• Subjects:
  Laboratories Minerals Occupational Health Quartz Safety Silicon Dioxide
• Keywords:
  Calcium Carbonate Grinding Mills Kinetics Laboratory Testing Milling Industry Mineral Processing Simulation Methods
• Series:
  Mining Publications
• ISSN:
  0301-7516
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  California ; District of Columbia ; OSHA Region 3 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  WO - Washington Office
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  105-118
• Volume:
  22
• Issue:
  1
• NIOSHTIC Number:
  nn:10008576
• Citation:
  Int J Miner Proc 1988 Apr; 22(1-4):105-118
• Contact Point Address:
  K. S. Venkataraman, Department of Materials Science and Mineral Engineering, University of California, Berkeley, CA 94720 USA
• CAS Registry Number:
  Calcium carbonate (CAS RN 471-34-1) ; Quartz (SiO2) (CAS RN 14808-60-7)
• Federal Fiscal Year:
  1988
• Performing Organization:
  University of CA--Berkeley
• Peer Reviewed:
  False
• Source Full Name:
  International Journal of Mineral Processing
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c2e3ee1c160bc1fe84828bc965b10fa6cd4ee5e53d6c9c794cb460b0e8ba1008f8195f546b55345e2e8a678ba79b9b8e0d67ecb2ea0fc4a9a8aefbbe041c3854
• Download URL:
  https://stacks.cdc.gov/view/cdc/219866/cdc_219866_DS1.pdf
• File Type:
  [PDF - 739.58 KB ]