We design and deliver production-scale
systems tailored to individual requirements for the wax
processing industry.
The following two examples show systems which were designed
to suit the requirements of the respective customer both
in terms of technology and cost-effectiveness.
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System with Zirkoplex classifier mill
200/4 ZPS
End-product finenesses of d
= = 4 - 20 µm and d
= 6 - 100 µm, dependent on product and grindability.
1 = Volumetric or gravimetric feed
metering station
2 = Metal separator
3 = Rotary valve
4 = Circoplex classifier mill ZPS with integral multi-wheel
Turboplex classifier
5 = Hydraulic system to open and close the mill and classifying
unit
6 = Explosion protection valve
7 = Air intake filter with silencer
8 = Cooling unit for the rinsing air supply
9 = Autom. reverse jet filter with fluidisation device
10 = Intake valve with fan
11 = Fan with exhaust silencer
12 = Control cabinet
A = Feed product
B = End product
Process sequence
The different types of wax are fed continuously to the ZPS
classifier mill by means of gravimetric or volumetric feed
metering units. A metal separator is positioned between feed
metering unit and mill inlet to remove any metallic contaminants
which might be present in the feed material. A rotary valve
provides an airtight seal.
The wax processed in the Zirkoplex classifier mill is filtered
out of the grinding/classifying air by an automatic reverse
jet filter and is discharged from the filter vessel via a
rotary valve. An ex-protected safety valve with downstream
fan and silencer is located at the filter's clean air outlet.
Another ex-protected safety valve with upstream silencer is
located at the air inlet to the classifier mill. Cooled and
compressed air is used to rinse the classifier and mill bearing
as well as the classifying wheel gaps.
The system is in pressure-shock-proof design to 10 bar overpressure.
The protection class of the electric system components is
IP 54 or explosion-protected, dependent on the individual
requirements. The dust content in the clean gas downstream
of the automatic filter is < 20 mg/m³.
System with fluidised bed opposed
jet mill 710/4 AFG
Wax can be ground to an end-product fineness of
= 3 - 20 µm and d
= 40 µm with this grinding system. The throughput is
between 100 and 1000 kg/h, dependent on the required fineness.
The process sequence of the AFG system is shown in the following
flowchart:
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1 = Volumetric or gravimetric feed metering station
2 = Metal separator
3 = Conveying screw
4 = Flap valve
5 = Fluidised bed opposed jet mill AFG
6 = Gas distribution device
7 = Cooling unit for the rinsing air supply
8 = Autom. reverse jet filter with fluidisation device
9 = Explosion protection valve
10 = Fan with exhaust silencer
11 = Rotary valve
12 = Intake valve with fan
13 = Control cabinet
A = Feed product
B = End product
C = Air supply (on site)
After the different wax types have been weighed and metered,
they are fed to the classifier mill in the same way as to
the ZPS system, i.e. via a metal separator and flap valve.
Subsequent to the grinding-classifying process, the wax is
discharged via an automatic filter with flanged material collection
bin and rotary valve.
Because the system is in pressure-shock-proof design to 10
bar overpressure and moreover is explosion-protected, there
is an ex-protected safety valve located between the automatic
filter and the fan.
Cooled and compressed air is used to rinse the classifier
gaps and the classifier bearing.
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