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Frysgranulering för tillverkning av homogena granuler (in Swedish)

PowderPro har i samarbete med Swerea IVF (då Svenska Keraminstitutet) under 1980-talet vidareutvecklat en alternativ granuleringsteknik – frysgranulering (Freeze Granulation) – vilken möjliggör konservering av homogeniteten från suspension till torrt granulat. Genom att spreja en pulversuspension ner i flytande kväve sker en momentan frysning av dropparna (granulerna). I den efterföljande frystorkningen sublimeras isen utan risk för segregeringseffekter som lätt sker vid konventionell torkning i luft. Resultatet blir sfäriska och friflytande granuler med optimal homogenitet lämpliga för t ex pressning av keramiska komponenter.
Freeze granulation illustration
Freeze granulation illustration

LED photoluminescence granulation

Freeze Granulation is today used for commercial production of homogeneous granules for the production of oxides used as a ceramic phosphor plate for white illumination in LED Lighting. By using Freeze Granulation of the powder and binder mixture, compared with spray drying, it is possible to manufacture a homogeneous phosphor plate with optimal properties for to generate a soft and warm white light from high power LEDs.

Ultrasonic atomisation

Freeze Granulation can be made using ultrasonic atomisation of the droplets. The resulting granules have a narrow granule size distribution and the granule size is in general smaller (average 120 micron) compared to a regular spray nozzle. The granulation speed is also slow with about 0.3 to 0.5 litre/h. 

 

 

 

Abrasive granulation

Freeze Granulation is today beeing used for commercial mixing, granulation and drying of different abrasive products. The resulting products have a homogeneous distribution of all active material, like superabrasive particles, resulting in improved milling performance and long tool life.

Please contact us and we will further discuss the opportunities with Freeze Granulation on your powder system and read more on technology and we propose a Granulation Test of your powder system.

LEAN Granulation

Freeze Granulation for LEAN Granulation of your powders and chemicals for optimal homogeneity, improved properties and it saves time and money in lab and production.

12th International Conference and Exhibition of the European Ceramic Society (ECerS XII)

19-23 June, 2011
Stockholm, Sweden

PowderPro AB thank you for visiting our stand C9 at the Congrss Center in Stockholm!
http://www.ecers2011.se/?type=static&id=1&mo=1

  

PowderPro AB stand C9 June 20
PowderPro AB stand C9 June 20
Iwamoto-san from Nagoya visited our stand June 21

 

PowderPro AB stand C9 at ECerS 2011 in Stockholm

 

PowderPro AB stand C9 at ECerS 2011 in Stockholm
PowderPro AB stand C9 at ECerS 2011 in Stockholm

Welcome to PowderPro’s stand at the Ceramic Congress ECerS 2011 in Stockholm!

Today we have opened our stand C9 for to market Freeze Granulation at the European Ceramic Society Congress ECerS 2011 in Stockholm – Welcome!

PowderPro AB stand C9 at ECerS 2011 in Stockholm
PowderPro AB stand C9 at ECerS 2011 in Stockholm

Homogeneous composite powders

Cross section of ganule
Cross section of homogeneous ganule

Homogeneous composite powders are beeing made by Freeze Granulation of a homogeneous composite powder slurry.

How to avoid doughnut or donut shaped granules?

By using Freeze Granulation – Spray Freeze Drying – you will be able to avoid donut-shaped granules.

Please contact us and we will further discuss the opportunities with Freeze Granulation on your powder system and read more on technology and we propose a Granulation Test of your powder system.

Granule shape, size and density

Spherical granules by freeze granulation
Spherical granules by freeze granulation

Freeze Granulation provides spherical free-flowing dust-free granules without cavities in the size range of 20-500 micron. The solids content of the suspension (slip) and the processing parameters (pump speed and airflow) control the granule density and size.

 

 

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Please contact us and we will further discuss the opportunities with Freeze Granulation on your powder system and read more on technology and we propose a Granulation Test of your powder system.