antimony - Sciencemadness.org

THE METALLURGY OF ANTIMONY.
of the filtering chambers. The nmoke from the condensing chamber
is aspirated by a closed ventilator, 6, through the passage, 7, over
which are hung a series of sacks, 8. The oxide, filtered off by moans
of these sacks, falls down into hoppers, 9, and is then discharged
through 10. The remaining gas may then be taken to an ordinary
chimney.
Figs. 39 and 40 represent another form of filtering chambors.
The fume from the condensing chambers is aspirated by a ventilator
(not represented) through tubes, 11, made of sheet-iron. Below
these tubes are suspended the sacks, 12, by means of which the
FIG. 39. FIG. 40.
oxide is filtered off, falls into hoppers, 13, and is then discharged into
15, through 14.
M. Emmanuel Chatillon patented * in 1907 another process which
will be described later on. The main advantages of this process are :- -~
(a) The possibility of treating ore dust.
(?)) The saving of the heat evolved, in the furnace as well as in the
chamber of condensation. In the latter the heat is used to raise the
temperature of tho air before passing into tho furnace.
(c) The complete nitration of the oxide by means of sacks.
Fig. 41 shows a vertical section across A A of fig. 42 and B B
of fig. 43. Figs. 42 and 43 are horizontal sections through CC
and D D of figs. 41 and 44 respectively.
. T
* Frond' patent No. 382 r >04, Oct. 3, 1907.
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