A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...
A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...
A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...
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THE METALLURGY OF ANTIMONY. 89<br />
Chatillon, who is now the owner of several large antimony smelting<br />
works in Haute-Loire (France), patented a process* in 1888, which<br />
is briefly thus:—Coke and ore are charged alternately into an ordinary<br />
roasting furnace, from which the volatile oxide thus developed is<br />
aspirated by a series of ventilators—generally three—into which<br />
boiling water is introduced for catching the volatile oxide in the<br />
currents passing through them; the last trace of the oxide is absorbed<br />
by the water contained in a series of basins.<br />
FIG. 26.<br />
A, The inside of the chamber.<br />
B, Pipe for supplying antimony<br />
oxide.<br />
C, Outlet.<br />
D, Water-pipe.<br />
E, Star-shaped piece for sprinkling.<br />
F, Manhole.<br />
G, Protector-piece against the<br />
shower for the pipe.<br />
H, Brick foundation.<br />
J, Plan view of E.<br />
K, Water overflow.<br />
Woolford's process (1889) is very similar to those described above.<br />
M. Plews ; patentt is as follows (1902):—The sulphide mineral is<br />
first broken into pieces not larger than 1 cubic centimetre, and is<br />
then charged into a furnace already heated to dark red by means of<br />
any kind of smokeless combustible material An oxidising flame is<br />
then produced in the furnace, and the temperature is raised to light<br />
red and is so maintained until all the volatile oxide is given off.<br />
With certain minerals, the antimony is not easily volatilised by an<br />
* French patent No. 189,974, April 16,1888.<br />
t Fremh patent Is T o. 318,658, Feb. 13, 1902.