Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Extraction of Silver from Refractory Ores.

Authors
Scheiner-BJ; Pool-DL; Sjoberg-JJ; Lindstrom-RE
Source
NTIS: PB 227 190 :11 pages
Link
NIOSHTIC No.
10008983
Abstract
Silver ores from the Candelaria District, Nevada, and Round Mountain District, Colorado, were investigated mineralogically and metallurgically. Silver minerals of four distinct groups were identified: (1) silver sulfide; (2) argentojarosite; (3) silver contained in the iron oxide; and (4) manganese carbonate-oxide minerals. Electrooxidation and acid-chloride leaching techniques were investigated as means of altering silver minerals, and their effects on subsequent silver extraction were determined. Application of the knowledge obtained from mineral leaching studies resulted in development of a sulfur dioxide-sodium chloride leaching sequence for extracting silver from these types of ores. Silver extractions of 80 to 85 percent were obtained by leaching the ores with a sulfurous acid-sodium chloride system. This was an increase of 9 to 61 percent silver extraction over that obtained by conventional cyanidation techniques.
Publication Date
19730101
Document Type
IH; Report of Investigation;
Fiscal Year
1973
NTIS Accession No.
PB-227190
NTIS Price
A03
Identifying No.
RI 7736
NIOSH Division
RERC;
Source Name
NTIS: PB 227 190
State
CO; NV;
TOP