PART IX
LEAD REFINING
THE REFINING OF LEAD BULLION[49]
By F. L. Piddington
(October 3, 1903)
In presenting this account of the Parkes process of desilverizing and refining lead bullion no originality is claimed, but I hope that a description of the process as carried out at the works of the Smelting Company of Australia may be of service.
Introductory.—The Parkes process may be conveniently summarized as follows:
1. Softening of the base bullion to remove copper, antimony, etc.