EXTRACTION METHODS FROM REFRACTORY ORES
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
N/A
Issued Date -
Feb 20, 2020
app pub date -
Nov 10, 2017
filing date -
Nov 10, 2017
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A method for extracting and separating Gold, Silver, Copper, Zinc and/or Lead from an Arsenic-containing ore, concentrate or tailings characterized in that the extraction is carried by roasting in the presence of a calcium-containing material and at least one of an alkali metal halide and alkaline metal halide. In the method, Arsenic remains immobilized in the extraction residue.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully