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Subsequent to treatment in a pulverising
dryer, PVC (E-PVC) is discharged as a powder. The main
application areas for E-PVC are plastisols and calendered
articles, sections, floor coverings, wall coverings, coated
materials and sealing compounds.
E-PVC is required as an end product with finenesses of
between > 63 µm and > 40 µm with as
little residue as possible. And because this is not possible
to achieve by means of pulverising dryers alone, grinding
and classifying technologies are also employed. |
The example shows a specially designed system for the following
feed/end fineness:
Feed material of atomising fineness:
approx. 90% < 63 µm
System end-product efficiency for finenesses: 0.1% > 63 µm
approx. 1600 kg/h
System end-product efficiency for finenesses: 1% > 40 µm
approx. 1200 kg/h
1 = Feed bin
2 = Dosing device
3 = Rotary valve
4 = Circoplex-Classifier mill ZPS
5 = Hydraulic pump
6 = Suction filter
7 = Air intake silencer / exhaust silencer
8 = Automatic filter with fluidisation
9 = Fan
10 = Control cabinet
A = Feed product
B = End product
A Zirkoplex®
Classifier Mill Type 630 ZPS is used for the grinding and
classifying process. The classifier is integrated into the top
section of the mill. The machine has special fluidising equipment
which reliably prevents coating formation at all critical points.
Zirkoplex® classifier mills are ideal for these applications
because they offer optimum accessibility, cool grinding, excellent
precision of cut, and are furthermore easy to clean.
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