National Technical Reports Library - NTRL

National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.




Details
Actions:
Download PDFDownload PDF
Download

Cobalt and Nickel Removal from Zinc Sulfate Electrolyte by Solvent Extraction and Precipitation Techniques.


PB289773

Publication Date 1978
Personal Author Sandberg, R. G.; Hebble, T. L.
Page Count 28
Abstract Sphalerite concentrates prepared during processing of Missouri lead ores contain small percentages of cobalt and nickel which adversely affect zinc electrolysis. The Federal Bureau of Mines has evaluated solvent extraction and precipitation techniques to remove and recover cobalt and nickel from zinc sulfate solutions prior to zinc electrolysis. Prepared zinc sulfate solutions containing about 190 gpl of zinc and 50 ppm of both cobalt and nickel were treated using combinations of complexing reagents, solvent, pH, concentration, time, and temperature. The following complexing reagents gave the best results: alpha-nitroso-beta-naphtol; beta-nitroso-alpha-naphtol; 1,2 cyclohexane dione dioxime (nioxime); di-2-pyridyl ketone oxime; and dimethylglyoxime. These reagents in appropriate solvent lowered the cobalt and nickel levels to less than 0.1 ppm using solvent extraction or precipitation techniques. Several flowsheets are presented for the removal and recovery of cobalt and nickel. Prepared zinc sulfate solutions purified by solvent extraction and precipitation techniques were successfully electrowon to produce good deposits.
Keywords
  • Cobalt
  • Nickel
  • Solvent extraction
  • Extractive metallurgy
  • Precipitation(Chemistry)
  • Zinc sulfates
  • Activating reagents
  • Zinc
  • Electrowinning
  • Nitroso compounds
  • Oxygen organic compounds
  • Naphtol/nitroso
  • Cyclohexane dione
  • Quinolinol/dipyridyl
  • Glyoxime/dimethyl
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 71N - Nonferrous Metals & Alloys
Corporate Authors Bureau of Mines, Rolla, MO. Rolla Metallurgy Research Center.
Document Type Technical Report
Title Note Rept. of investigations.
NTIS Issue Number 197910
Cobalt and Nickel Removal from Zinc Sulfate Electrolyte by Solvent Extraction and Precipitation Techniques.
Cobalt and Nickel Removal from Zinc Sulfate Electrolyte by Solvent Extraction and Precipitation Techniques.
PB289773

  • Cobalt
  • Nickel
  • Solvent extraction
  • Extractive metallurgy
  • Precipitation(Chemistry)
  • Zinc sulfates
  • Activating reagents
  • Zinc
  • Electrowinning
  • Nitroso compounds
  • Oxygen organic compounds
  • Naphtol/nitroso
  • Cyclohexane dione
  • Quinolinol/dipyridyl
  • Glyoxime/dimethyl
  • Bureau of Mines
  • 71N - Nonferrous Metals & Alloys
Loading