antimony - Sciencemadness.org
antimony - Sciencemadness.org
antimony - Sciencemadness.org
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THE METALLURGY OF ANTIMONY. 121<br />
(a) The suppression of any loss due to charging and to the<br />
activity of reaction.<br />
(b) The protection of the bed and the wall of the furnace.<br />
(c) The elimination of a great proportion of dirt and residues.<br />
(d) An increased yield of metal.<br />
The substances are mixed in the proper proportions, moulded into<br />
briquettes of a convenient size, dried, and charged into a reverberatory<br />
furnace for the production of the metal.<br />
The ingredients forming the briquettes are mixed in the following<br />
proportions by weight:—<br />
(a) Oxide of <strong>antimony</strong>, powdered . . . . 100<br />
Charcoal, powdered 15<br />
Dried carbonate of soda, powdered . . . 2<br />
Lime, powdered 2<br />
Water 15<br />
(b) Sulphide of <strong>antimony</strong>, powdered . . . . 100<br />
Iron filings or shavings 10<br />
Charcoal, powdered 20<br />
Dried carbonate of soda, powdered . . . 2<br />
Lime, powdered 2<br />
Water . 15<br />
(c) Sulphide of <strong>antimony</strong>, powdered, or oxide of <strong>antimony</strong>,<br />
powdered . . . . . . 35<br />
Anumonate of oxide of <strong>antimony</strong> . . . . 60<br />
Iron filings or shavings . . . . . . 8<br />
Charcoal 20<br />
Carbonate of soda 3<br />
Lime, powdered 2<br />
Water 15<br />
(8) The process * for the extraction of gold from <strong>antimony</strong> ore, as<br />
patented by M. Herrenschmidt, is as follows :—<br />
This process is based upon the principle that, when <strong>antimony</strong><br />
sulphide and the metal itself are melted together, the gold<br />
contained in the sulphide passes into the metal. The direct<br />
use of the metal can be dispensed with by, for instance, melting<br />
<strong>antimony</strong> sulphide and <strong>antimony</strong> oxide together with coal. The<br />
metallic <strong>antimony</strong> formed in this reaction extracts the gold from<br />
the sulphide.<br />
A mixture is made of the <strong>antimony</strong> ore or of <strong>antimony</strong> crude<br />
with the metal or its oxide, in such proportion as will yield one-tenth<br />
of the metal in the ore as charged into a reverberatory furnace, a<br />
rotatory furnace, or a crucible. The auriferous <strong>antimony</strong> thus<br />
* French patent No. 350,013, June 23, 1904,