Effects of turbomilling parameters on the simultaneous grinding and ferric sulfate leaching of chalcopyrite
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Query Builder

Query box

Help
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Effects of turbomilling parameters on the simultaneous grinding and ferric sulfate leaching of chalcopyrite

Filetype[PDF-1.22 MB]


  • English

  • Details:

    • Description:
      "As part of its mission, the U.S. Bureau of Mines continues to develop technologies that will enable cost-effective compliance with environmental requirements. To this end, investigations to improve the kinetics to chalcopyrite dissolution by simultaneous grinding- leaching in ferric sulfate solution were conducted using the Bureau- designed turbomill. The development of such a hydrometallurgical process would provide a nonpolluting alternative to conventional smelter technology. The effects of mill rotational speed and volume percent solids on the leaching time and energy required for copper extraction from chalcopyrite were evaluated. The results of this laboratory study have shown that the simultaneous grinding-leaching of chalcopyrite concentrate using the turbomill is technically feasible with essentially 100-pct extraction of copper being possible at 90 deg C. An optimal energy consumption of 1,153 kw.h/st of copper leached was found in batch testing with the mill operating at 400 rpm with a slurry containing 35 vol pct chalcopyrite. This energy consumption, while higher than other proposed leaching processes (about 600 kw.h/st), is of the same order of magnitude. Further refinement of the energy requirements would require additional testing using a continuous circuit. Leaching times of less than 1 h, for 80-pct copper extraction, are achievable using the turbomill grind-leach process." - NIOSHTIC-2

      NIOSH no. 10008561

    • Document Type:
    • Main Document Checksum:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at stacks.cdc.gov