Gunpowder Dusting
Reels
and Glazing Barrels, No. 13
DUSTING. -
The dusting reels are of two kinds: - 1st., slope reels. 2nd., horizontal
reels. The grain powder from Granulating Mill, 234, is dusted in the slope
reels (those in the illustration where the feeding hopper is at one end).
A continuous supply of grain powder is thus allowed to pass through these
revolving reels and empty by gravity into receptacles at lower end. The
dust therefrom accumulates within the surrounding box.
THE GLAZING BARRELS,
shown at front of illustration, now come into operation. The grain powder
here, after hours of revolution varying 1-10, has imparted to it a fine
glaze which the friction of grains rolling one over the other produces.
THE HORIZONTAL
REELS (see illustration where the feeding hoppers are central), are
used after the glazed powder has dried in the Drying Stove, No. 10, and
impart a finish and colour to the grain. When the finishing dusting has
been in operation an hour or so, the levers shown in illustration are
manipulated and cause the reel to tilt at such an angle that the finished
grains empty into receptacles at lowered end of reels.
8 h.p. required to
drive above.
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