assonic Dorstener Siebtechnik GmbH

High performance rotary screener with ultrasound stimulation for high performance screening of organic and inorganic powder material.

Screening processes play an important part in the primary industry’s quest for improvement of the end product. Achieving a high level of quality and increased screening yield with low space requirements and energy consumption motivated us to develop the assonic SONIC SPEED SCREEN™ RoSM700 high performance continuous screening machine.

Features and advantages at a glance:

• Optimized screening performance for fine screenings due to screen baskets made of sintered stainless steel mesh or stainless steel screen cloth from 20 – 5,000 μm
• Elimination of the boundary layer resistances between powder and screen basket fabric
• Self-cleaning effect (ultrasound and medium frequency)
• Throughput rate increase by a factor of 1.5 - 10 by ultrasound and lower frequency stimulation of the screen basket
• Comminution of agglomerates and thus more complete reduction of oversized particles
• Adjustment to the rheology of the screened product by suitable lower-frequency screen basket stimulation and the use of digital ultrasound generators
• Easy change of color or product due to pull-out and swivel unit
• Low space requirement, uncomplicated integration into existing systems
• Flexible and complete control, possibility of integration into existing control systems 
• Food compliant (EHEDG) and ATEX version (zone 20, 22) available

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Our expertise together with the critical certificates make us an extremely competent partner.
 

With our certifications and partners we are building a competence network, offering 
full sifting and sizing service.

Our newest development: The MINI SONIC SCREEN MSS 150 is perfectly suitable for batch-wise processing of small powder quantities up to 10 l.

Thanks to our patented SONIC SPEED SCREEN™, even difficult products can be screened.

Features and advantages at a glance:

• Space-saving design
• Mobile use, quick installation
• Easy connection of existing cylinders using ISO-KF40 or DN50 Tri Clamps connections
• Effective and efficient
• Quick change of screen
• Possibility of inerting

Sonic powder conditioner metal screening and preparation for AM

The practical solution for automated preparation and recycling of powders for additive manufacturing.

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Feeding – Mixing – Screening – Loading

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SONIC SPEED SCREEN™

• Screening with ultrasound and low-frequency stimulation
• Use of interchangeable screens or sintered screens 
• Efficient screening with 1 –2 screen decks
• Separation of cuts from 20 μm
• Quick change of jobs
• Tight and safe
• AMP+ - more automated and integrable

Cross-flow screen filtration in a centrifugal field with ultrasonic excitation for high-performance solid-liquid separation

Fields of application

• Clarification of suspension
• Thickening of suspension
• Drainage to recover the dry solid

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Features and advantages

• Continuous processing of large quantities of liquid
• Variable rotor speed generates necessary centrifugal forces to adjust power
• High filtrate throughput due to ultrasound stimulation of the screen basket even with fine mesh sizes
• Additional increase of throughput due to low-frequency stimulation of the basket
• Adjustment of the dwell time of the product by adjusting the inclination of the machine
• Adaption to the product due to different mesh sizes of the screen basket from 20 – 2000 μm
• Speed controlled rotor drives allows individual adjustment 
• High centrifugal forces in the screen basket enable drainage
• Available with and without base

The Compact Screening Machine with ultrasound stimulation for high performance screening of organic and inorganic powder material.

The Compact Screening Machine with ultrasound stimulation for high performance screening of organic and inorganic powder material.

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As it is the case in many industries, batch sizes are getting increasingly smaller in the processing industry. That’s why we developed the new, fast compact screening machine. It is perfect for fine particle screening, for the preparation of individual batches and for use in laboratories as it effectively prepares fine and difficult products.

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Features and advantages at a glance:

• Optimized screening performance for fine sifting with screens made of sintered stainless steel mesh or stainless steel screen cloth from 20 – 1,000 μm
• Elimination of the boundary layer resistances between powder and screen basket fabric
• Self-cleaning effect (ultrasound and medium frequency)
• Adjustment to the rheology of the screened product by suitable low-frequency screen basket stimulation and the use of digital ultrasound generators
• Very low space requirement, uncomplicated integration into existing systems
• Optional basic or automatic full control, possibility of integration into existing control systems
• Food compliant (EHEDG) and ATEX version (zone 20, 22) available

​CSM 500 – compact machine design, high screening capacity for fine screening tasks