Figure 4-32. Recirculation pump on top of
Figure 4-29. Slurry mixing tank using recirculating pump
6,000-gallon wagon agitates the slurry.
for mixing hydrate and water.
Figure 4-30. Jet slurry mixing plant.
Figure 4-33. Grader-scarifier cutting slurry into stone base.
Figure 4-34. Portabatch lime slaker.
exothermic action of quicklime in water, the slurry
is produced at a temperature of about 185 degrees
of lime slurry.
Figure 4-31. Spreading
(g) Some of the advantages and disadvan-
tages of dry hydrated lime are as follows:
(f) Slurry made with quicklime. A recent
unit developed for making lime slurry from quick-
Dry lime can be applied two or three
lime is the Portabatch Slaker (fig 4-34). This unit
times faster than a slurry.
consists of a lo-foot diameter by 40-foot tank that
Dry lime is very effective in drying out
incorporates a 5-foot diameter single shaft agitator
turned by a 100-horse power diesel engine. The
batch slaker can handle 20 to 25 tons of quicklime
Dry lime produces a dusting problem
that makes its use undesirable in
and about 25,000 gallons of water, producing
the slurry in about 1 to 1.5 hours. Because of the