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

Lignite recovery of cobalt [3-plus] from an ammoniacal ammonium sulfate solution

Filetype[PDF-918.05 KB]


  • English
    • Details You May Also Like

    Details:

    • Alternative Title:
      Lignite Recovery of Cobalt3+ from an Ammoniacal Ammonium Sulfate Solution
    • Personal Author:
      Slavens, G. J. (Gregory J.)
    • Corporate Authors:
      United States. Bureau of Mines.
    • Description:
      "The Bureau of Mines has devised technology to recover cobalt, nickel, and byproduct copper from domestic lateritic material using an oxidative, ammoniacal ammonium sulfate leach. Nickel, cobalt, and copper were recovered by solvent extraction and electrowinning. To reduce the cost and complexity of cobalt recovery, an alternate method using lignite to extract co3+ was investigated as reported herein. In the first 25 bv (bed volumes) of solution contacted with lignite, 97 wt pct of the co3+ was extracted in a downflow column of ph 9.3. After 85 bv, the lignite was loaded to 1.5 Wt pct co3+ and further extraction was minimal. The lignite extracted cobaltic ammine complexes rather than cobalt ions and was nonselective as to other metal cations and ammonium ions. Deleterious cations and 80 wt pct of the nonammine ammonium ions were removed prior to acid elution of the lignite. The removal of the ammines prior to elution to produce an ammonium-ion-free co3+ eluate was only partially successful. Thus co3+ removal from ammoniacal solutions by lignite is technically difficult and economically unfeasible. It was also determined that reduction of co3+ to co2+ occurred during the extraction-elution process." - NIOSHTIC-2

      NIOSH no. 10003494

    • Subjects:
    • Series:
      Report of investigations (United States. Bureau of Mines) ; 8870
    • Document Type:
      Report
    • Collection(s):
    • Main Document Checksum:
    • Download URL:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

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