Retsch DM 200 - Manual (Page 6)

16.11.2006 Retsch GmbH
6
Doc.Nr. GB 98.740.9999
Technical Data
machine model designation: DM200
Use as intended
The DM200 laboratory disk mill is suited for finely
milling soft to hard materials (up to 8 Mohs) in sets or
continuously from the fields of mining and metallurgy,
rocks and earth, the glass industry or soil research.
Our applications laboratory would be glad to give you
further information upon request.
The DM200 is designed for quantities from 20 to ap-
proximately 150 Kg/h depending upon the setting of
the discharge gap and the piled density and crushing
behaviour of the sample. The feed size may not ex-
ceed an edge length of a maximum of 20 mm.
!
The DM200 is not designed to be explosion pro-
tected and therefore it is not suited to milling ex-
plosive self-igniting or fire-promoting substances.
!
If oxidised materials are milled such as metals,
organic materials, wood, plastics, etc., there is the
danger of self-ignition (dust explosion) if the pro-
portion of fines exceeds a certain percentage. It is
necessary to observe the appropriate safety
guidelines when materials such as these are
crushed.
Do not modify the machine and only use the spare
parts and accessories approved by Retsch.
Otherwise the conformity with European di-
rectives declared by Retsch shall be rendered
invalid.
Furthermore, this leads to a loss of all war-
ranty claims.
Functional Description
The material sample is crushed by two milling
discs coarsely meshed on the inside working
against one another in a milling space sealed
against dust from the outside. One of these is
driven by a powerful and slow moving gear motor.
The material to be milled is filled into the centre
of the stationary milling disc through a closable
funnel and it escapes from the gap between the
two disks after being crushed by compressing and
shearing force. The width of the gap can be ad-
justed and controlled from outside and determines
the mean granulation of the material to be milled.