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Alpine supplies complete grinding-classifying systems
for fine grinding both low-fat (10-14%) and high-fat (18-24%)
cocoa press cakes.
Cocoa powder finenesses of at least 99.9% < 75µm
or finer are achieved! This cocoa powder fineness is recognised
as being unparalleled on the market. |
The systems used for fine-grinding are:
Contraplex cocoa mills
Features: wide-chamber housing, self-supporting pin discs, housing
without cooling.
The cocoa powder fineness of 99.9% < 75 µm or finer
is achieved by combining the Contraplex cocoa mill with the
Alpine cocoa classifier, which is operated as an in-line classifier.
System cooling ensures the following temperature level in continuous
operation:
- Feed temperature of press cakes approx. 80°C
- Cocoa powder end-product temperature approx. 17°C
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Legend
1 = Feed metering channel
2 = Hammer mill Ha
3 = Rotary valve
4 = Metal separator
5 = Contraplex wide
chamber mill CW
(Cocoa design)
6 = Jacketed cooling tube system
7 = Stream classifier STS (Cocoa design)
8 = Autom. filter
9 = Control cabinet
A = Product feed:
Cocoa presscake < 100 mm
B = End product
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Reference values:
| Type 250 CW |
approx. 200 kg/h |
approx. 100-150 kg/h |
| Type 400 CW |
approx. 400 kg/h |
approx. 300 kg/h |
| Type 630 CW |
approx. 1200 kg/h |
approx. 900 kg/h |
| Type 800 CW |
approx. 2000 kg/h |
approx. 1500 kg/h |
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*18%
fat content.
The mills operate with cooled intake air (approx. 5-10°C). |
Zirkoplex classifier mills ZPS, especially optimised for the
confectionery industry, offer new and cost-effective advantages
for fine grinding fatty materials which deposit readily.
Among the typical products used in the confectionery industry
are cocoa press cakes, chocolate crumb, sugar-lactose mixtures,
mixtures of sugar and skimmed milk powder or full-fat milk powder,
etc.
Use of the ZPS systems for these products (cocoa press cakes,
chocolate crumb) constitutes a major step forward; the high
powder fineness, e.g. 98% < 50 µm, is achieved in one
pass. Over and above this, deposit-free and trouble-free continuous
operation is possible over extremely long time periods.
Empirical values of powder fineness
98% < 50 µm
| classifier mill ZPS |
approx. 12% fat |
approx. 18% fat* |
| Type 315 ZPS |
450 -500 kg/h |
400 kg/h |
| Type 500 ZPS |
950 kg/h |
800 kg/h |
| Type 750 ZPS |
2100 kg/h |
1800 kg/h |
Powder fineness: 99.9% < 75 µm
Type 500 ZPS, 700-900 kg/h, 500-700 kg/h
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