A method for predicting equilibrium values in the solvent extraction of copper in ammoniacal systems
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

Add terms to the query box

Query box

Help
Clear All
i

A method for predicting equilibrium values in the solvent extraction of copper in ammoniacal systems

Filetype[PDF-1.90 MB]


  • English

  • Details:

    • Description:
      "A mathematical modeling method was developed by the Bureau of Mines for the prediction of the principal equilibrium species in the solvent extraction of copper. The use of models for predicting the amount of metal extracted can reduce the amount of experimental work required to characterize a system for purposes such as optimization studies. Models were developed for the extraction of copper from ammoniacal sulfate and carbonate solutions with commercially available extractants commonly used by industry. Results from laboratory shakeout tests compared well with predictions of the equilibrium concentrations of copper and ph values. For example, the loading of copper onto the solvent was predicted for most cases within +/-5 pct of the measured values, and the ph to within +/-0.1 Ph unit in sulfate systems and +/-0.2 Ph unit in carbonate systems. Both mechanistic and empirical extraction equations were developed from laboratory data for copper and ammonia. The empirical-based models were slightly more accurate than the mechanistic-xdsed models. Industrial-level concentrations of the aqueous and organic constituents were used in this work. Independent variables included copper concentration, ionic strength, and initial ph of the aqueous phase; extractants, diluents, and their concentration in the organic phase; and temperature." - NIOSHTIC-2 NIOSHTIC no. 10006174
    • 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