Dispersion
In the specialist area of dispersing, the focus is on:
- Energy-efficient production of dispersions
- Process optimisation and improvement of dispersion quality
Some selected examples of our activities in the field of dispersion processes are:
- Selection and testing of suitable processes depending on the product properties
- Production of suspensions and emulsions
- Carrying out test days to compare different dispersion processes
- Accompanying the upscaling from laboratory to industrial scale
Laboratory
Precision in processing and analysis thanks to state-of-the-art technology
The competences of the EZD are complemented by a close exchange of experience with the application laboratories of equipment manufacturers. This ensures that the equipment in our laboratories is always state-of-the-art.
Technical equipment
Medium pressure homogeniser
Task
- Dispersion of agglomerated particles
- Production of emulsions
Functional principle
- In the dispersing unit, energy is converted into very high velocities (up to 300 m/s) by pressure differences.
- Force effect on the product through turbulence, cavitation and specifically applied shear and impact forces
Parameters
- Working pressure between 10 and 700 bar
- Delivery rate 18 - 60 l/h
- Typical batch size 5 - 100 l
Typical applications
- Paints and coatings
- Resin systems
- Food and beverages
High-pressure homogeniser
Task
- Dispersion of agglomerated particles
- Production of emulsions
Conversion
- In the dispersing unit, energy is converted into very high velocities by pressure differences
- Force effect on the product due to turbulence, cavitation and specifically applied shear forces
Parameters
- Maximum working pressure: 2,000 bar
Typical areas of application
- Coatings and surface systems
- Resin systems
- Food and beverages
Dissolver
Task
- Rapid mixing unit for intensive and time-saving mixing and dispersing
Implementation
- Mixing tool: various toothed rim discs
Parameters
- Speed: 500 - 6,000 min-1
- Typical batch size from 1 - 10 l
Typical applications
- Paints, lacquers and surface systems
- Resin systems and adhesives
Rotor-stator disperser
Task
- Multifunctional laboratory machine for mixing, wet grinding, dispersing and adding powders to liquids
Implementation
- Single-stage dispersing module Ultra-Turrax (rotor-stator)
- Multi-stage high-performance dispersing machine Dispax-Reactor (rotor-stator for fine particle size reduction with narrow particle size distribution)
- CMS module for solid-liquid mixing
- module Colloid Mill for wet or fine grinding of hard and granular raw materials or for the production of very fine emulsions
- Ultra-Turrax as batch disperser
Parameters
- Speed: 3,000 and 26,000 min-1 (depending on the module used)
- Typical batch size from 20 - 2,000 ml
- Can be used for inline, batch or recirculation operation
Typical applications
- Resin systems
- Cosmetics and medicine
- Paints and pigments
Universal mixer
Task
- Mixing and kneading of medium to high viscosity material systems
- Incorporation of high solids content into silicone masses
- Carrying out various process steps in a mixing unit: wetting, plasticising, homogenising, deagglomerating, heating, cooling, degassing
Conversion
- Incorporation and mixing with two counter-rotating Sigma blades
Parameters
- Speed: 10 - 100 min-1
- Batch size: 1 l
- with and without vacuum
- Temperature range: 10 °C - 200 °C
Typical applications
- Highly filled, pasty masses
- Incorporation of solids into rubber, plastics, silicone, adhesives
Agitator ball mill
Task
- Multifunctional laboratory tube mill for scientific academic research and development tasks
- Wet grinding of suspensions
- Scale-up to comparable production machines possible
Implementation
- Process can be mapped as a batch or in a cycle
- Agitator shaft in the grinding chamber ensures movement of the grinding media
- Product stress due to shear, pressure and impact effect of the grinding media
Parameters
- Speed: 1,000 - 4,500 min-1 (peripheral speeds 3.5 - 18 m/s)
- Typical batch size from 0.15 - 15 l
- Shaft and grinding chamber design: Stainless steel, ceramic and PU
- Grinding chamber volume: 240 - 910 ml
- Grinding media:
- Design: Ceramic, steel and glass
- Ø 0.1 - 2.4 mm
Typical applications
- Paints and lacquers
- Pharmaceuticals and cosmetics
- Paper coatings
- Ceramic suspensions
- Food
- Nano suspensions
Tumbling mixer
Task
- Mixing / homogenising powders, granulates and solid/liquid materials
Implementation
- Diagonal arrangement of the mixing vessel ensures a tumbling motion and thus a uniform, three-dimensional material rearrangement
- Different vessels can be used in the mixing vessel
Parameters
- Speed: 5 - 40 min-1
- Batch size: max. 5 kg
Typical areas of application
- Production of homogeneous powder mixtures
Dual asymmetric centrifuge
Task
- Rapid mixing unit for intensive and time-saving mixing of small quantities
- mostly for screening recipes
Implementation
- Combination of centrifugal forces acting in different planes by double rotation of the mixing bowl
Parameters
- Speed: 300 - 3,500 min-1
- Typical batch size from 5 - 100 g
Typical applications
- Paints and lacquers
- Resin systems and adhesives
- Recipe development
Three-roll mill
Task
- Homogenising, deaerating, wetting and fine grinding of suspensions
- A defined upper particle size limit can be achieved by precisely adjusting the gap distances between the rollers
Implementation
- Defined constraint system through set gap distance
Parameter
- Gap widths between 5 - 121 µm
- Speeds between 30 - 600 min-1
Typical applications
- Paints and lacquers
- Resin systems and adhesives
- Coatings
- Highly filled ceramic slurries
- Pigment pastes and masterbatches
Ultrasonic homogeniser
Task
- Dispersing, deagglomerating, wetting and real comminution of solids in suspensions by means of ultrasound
Conversion
- Batch process or in circulation by means of water-cooled flow-through cell
- Stress due to cavitation, impact, turbulence and shear
Parameters
- max. power input: 1,000 W
- Process pressure: max. 5 bar
Typical applications
- Paints and lacquers
- Resin systems and adhesives
- Coatings
Ultra Centrifugal Mill
Task
- Dry fine comminution of soft to medium-hard and fibrous materials
- Material-friendly and analysis-oriented sample preparation in the shortest possible time
Implementation
- Comminution principle: impact, shear
Parameter
- Feed volume: up to 300 ml
- Feed size: < 10 mm
- Final fineness: < 40 µm
- Speed: 6,000 - 18,000 min-1
Typical applications
- Sample preparation of dry solids for analyses
- Size reduction of fibrous solids
- Dry grinding of minerals and ores
Intensive mixer
Task
- Mixing, drying, granulating, agglomerating, plasticising, kneading, compounding, degassing, tempering, dispersing, suspending, coating
Conversion
- Mixer with functional separation of the material movement and the mixing function
- Rotating mixing vessel ensures circulation of the material to be mixed, intensification possible through inclined position
- Batch process
Parameters
- max. mixing volume: 1 l
- Vacuum: 50 - 1,100 mbar
- Speeds:
- Mixer: 300 - 5,000 min-1
- Container: 12 - 65 min-1
- Inclination: 0 - 30°
Typical applications
- Paints and lacquers
- Battery suspensions (Li-Ion)
- Resin systems and adhesives
- Coatings
- Granulation and agglomeration of fine powders
- Production of polymer masterbatches
SKZ · German Plastics Center
Friedrich-Bergius-Ring 22
97076 Würzburg
Telefon: +49 931 4104-0
E-Mail: info@skz.de
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97076 Würzburg
Telefon: +49 931 4104-0
E-Mail: info@skz.de
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SKZ Training Center – Welding
Frankfurter Str. 19 c
97082 Würzburg
Telefon: +49 931 4104-123
E-Mail: training@skz.de
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97082 Würzburg
Telefon: +49 931 4104-123
E-Mail: training@skz.de
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SKZ · Branch office Halle
Training and Research Center
Köthener Str. 33a
06118 Halle (Saale)
Telefon: +49 345 53045-0
E-Mail: halle@skz.de
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Köthener Str. 33a
06118 Halle (Saale)
Telefon: +49 345 53045-0
E-Mail: halle@skz.de
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SKZ · Branch office Horb
Training Center
Rauher Grund 9
72160 Horb am Neckar
Telefon: +49 7451 62457-0
E-Mail: horb@skz.de
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Rauher Grund 9
72160 Horb am Neckar
Telefon: +49 7451 62457-0
E-Mail: horb@skz.de
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SKZ · Branch office Peine
Training Center
Woltorfer Str. 77, Halle G
31224 Peine
Telefon: +49 5171 48935
E-Mail: peine@skz.de
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Woltorfer Str. 77, Halle G
31224 Peine
Telefon: +49 5171 48935
E-Mail: peine@skz.de
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EZD · Branch office Selb
European Center for Dispersion Technologies (EZD)
Weißenbacher Str. 86
95100 Selb
Telefon: +49 9287 99880-0
E-Mail: ezd@skz.de
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Weißenbacher Str. 86
95100 Selb
Telefon: +49 9287 99880-0
E-Mail: ezd@skz.de
Route berechnen
Sales partner – Italy
PROCHEMA S.r.l.
Via Buonarotti 175
20900 Monza, Italy
Telefon: +39 039 281561
E-Mail: info@prochema.it
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Via Buonarotti 175
20900 Monza, Italy
Telefon: +39 039 281561
E-Mail: info@prochema.it
Route berechnen
Sales partner – Romania
Plastics Bavaria Equipment & Systems srl
Str. Iancu Jianu, nr. 26
500178 Braşov, Romania
Telefon: +40 268 412 559
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Str. Iancu Jianu, nr. 26
500178 Braşov, Romania
Telefon: +40 268 412 559
Route berechnen
EZD · Location Selb
European Centre for Dispersion Technologies (EZD)
c/o SKZ – KFE gGmbH
Weißenbacher Str. 86
95100 Selb
Phone: +49 9287 99880-0
eMail: ezd@skz.de
