Title:
Froth flotation of copper sulfide ores with lignin sulfonates
United States Patent 2485083

Inventors:
Booth, Robert B.
Pickens, Roy A.
Publication Date:
10/18/1949
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Assignee:
AMERICAN CYANAMID CO
Primary Class:
Other Classes:
209/901
International Classes:
B03D1/012; B03D1/004