Retsch SK 100 - Manual (Page 17)

05/04/2012
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Retsch GmbH
17
0002
Working instructions
Target group: Laboratory personnel
General
The SK 100 is a highly modern, efficient product from Retsch
GmbH.
Thanks to a large selection of accessories, the SK 100 is a unit with
versatile practical possibilities mainly in the chemical and ceramic
fields, in mining and in metallurgy, as well as in the preparation of
soil samples etc. in laboratories and in industry.
The SK 100 is mainly used for the precrushing and fine crushing of
medium-hard to hard and brittle materials to approx. 6 according to
Mohs.
End fineness
The achievable end fineness depends on the hole width of the bot-
tom sieve and the crushing properties of the material. In favourable
cases, finenesses of < 100µm are possible.
The SK 100's mode of working
Crushing in the SK 100 cross beater mill takes place through beat-
ing, impact and shearing action.
Once the material as been fed into the feeding funnel, it passes into
the grinding chamber, where the crushing process takes place be-
tween the cross beater, the grinding insert and the bottom sieve.
As soon as the material being crushed has reached the relevant end
fineness, it passes through the bottom sieve and into the collecting
vessel.
With the use of a fabric filter hose between the SK 100 and the col-
lecting vessel, any build-up of the air flow caused by the rotating
cross beater is prevented and the material throughput is partly ac-
celerated.
This ensures a gentle crushing process.