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 AXT1M0XY.<br />
The prodticts of roasting (Sb2O3) are:—<br />
1st condensing chamber .<br />
2nd<br />
3rd<br />
4th<br />
5th<br />
6t-h<br />
7th<br />
8th<br />
9th<br />
5 J3<br />
> ><br />
><br />
76 kgs.<br />
. . . 65 „<br />
65 „<br />
48 „<br />
49 ,.<br />
44 ,,<br />
34 „<br />
• • • 24 „<br />
. . 19 ,,<br />
Total = 424 kgs.<br />
101<br />
It should he noted that the cleaning of the chambers and pipes for<br />
the removal of all the oxide was carried out in the next experiment.<br />
(b) Second Experiment—The first charge in the second experiment<br />
commenced at 11.5 a.m. on the 25th of April, and the last charge<br />
stopped at 10.30 p.m. of the same day, thus giving a total of 11<br />
hours 25 minutes working time. Each charge consisted of 50 kgs.<br />
of ore mixed with 4 per cent, of charcoal. The total charges<br />
amounted to 2725 kgs. of ore.<br />
The products of roasting (Sbo03) are :—<br />
1st condensing chamber .<br />
2nd<br />
3rd<br />
,.<br />
4th ,<br />
5th<br />
6th ,<br />
7th ,<br />
8th<br />
9th ,<br />
. 176 kgs.<br />
103 .,<br />
96 ,,<br />
61 ,<br />
45 „<br />
38 ,<br />
32 ,.<br />
28 „<br />
23 „<br />
Total = 602 kes.<br />
These numbers represent the actual amount of oxide extracted<br />
from the ore, plus the cleanings of oxide, due in part to the first<br />
experiment<br />
Further cleaning of the pipes and chambers gave 32 kgs. The<br />
condensing tanks, n, in fig. 4 of fig. 45, gave 1V8 kgs. of dried oxide.<br />
Now, if all had been thoroughly cleaned up—the pipes, the condensing<br />
chambers of the coke-tower, and the precipitating tanks—there would<br />
have resulted at least 5 kgs. of oxide more.<br />
(c) Conclusion.—The ore treated contained 19*5 per cent, of<br />
antimony.<br />
The oxide found in the first chamber contained 23 per cent, of<br />
impurities.