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Size reduction

Size reduction

Product catalog summary

Overview: The document provides detailed information on the Gericke Nibbler, a piece of equipment designed for size reduction and reprocessing of agglomerates and lumps. It replaces the previous leaflet No. 586/1/e and offers specifications for screen sizes ranging from 1 to 25 mm.

Applications: The Nibbler can be installed after processes such as drying, filter pressing, liquid addition, and storage, and before processes like pneumatic conveying, mixing, and recycling. It is suitable for breaking up filter cakes and can be mounted onto skid frames.

Advantages: Key benefits include improved process efficiency, flexible handling, minimized dust, reduced component wear, energy savings, and prevention of overheating. The final particle size is adjustable using different screen or mesh sieve basket assemblies.

Operation Principle: The Nibbler operates with 3 or 4 paddles on a rotating shaft, sweeping the product against a serrated screen. Size reduction is achieved through cutting action and breaking brittle materials, with adjustable gaps between rotor blades and screens.

Specifications: Available in carbon and stainless steel, the Nibbler features large inspection doors, quick removal of basket and screen assemblies, and adjustable rotor-paddle gaps. It is ATEX compliant for zones 21 or 22.

Models and Throughput: Various models are available with different inlet sizes and throughputs, ranging from 1,500 l/h to 24,000 l/h, depending on the product properties and screen assembly.

Particle Size Reduction Examples: The document lists examples of products and their size reduction capabilities, such as activated carbon, chocolate blocks, and milk powder, with specific before and after sizes.

Additional Equipment: The Gericke GCN Cone Nibbler is mentioned for applications requiring very fine particle sizes or increased bulk density, with screen sizes from 2000 to 150 μ.

Contact Information: Contact details for Gericke offices in Switzerland, Germany, the UK, Singapore, France, and the Netherlands are provided for further inquiries.

Catalog excerpts

Powder Processing Equipment & Systems Screen sizesfrom 1 to 25 mm S creen s i zes > Leaflet No. 634 enReplaces No. 586/1/e size="-2">

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Type 1) Inlet size (mm) Rotor 2) Max. throughput 3)NBS 200/200 200x200 1,1 kW 1.500 l/h NB 300/350 300x350 2,2 kW 7.000 l/h NBS 300/450 300x530 4,0 kW 12.000 l/h NB 300/800 300x800 4,0 kW 18.000 l/h NB 450/800 450x800 5,5 kW 24.000 l/h > 1) Other models on request2) Speed 60 - 80 RPM; optional and special rotors available 3) The effective throughput depends on the product properties as well as the basket and screen assembly Pharmaceutical execution for exacting requirements,special requirements available Picture left: Nibbler installed after filterpress for breaking up filter cakePicture right:Nibbler...

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Maximum particle sizeProduct (Example) Before Nibbler (mm) After Nibbler (mm) Activated carbon, 4,5 Ֆ 6 0,5 1,5briquettesAlu-magnesium Fragments 10 x 90 x 150 < 6Baked products 80 x 80 x 300 < 10(incl. fresh dough)Biscuits 20 ֖ 100 < 2 3Breakfast beverage Chips 40 - 50 1 - 5 Carbamide Large hard 2 - 3 agglomerates Ceramic waste, pre kiln ֢ȅ 70 x 200 3 - 5Charcoal Blocks 20 x 30 x 50 < 6 Chocolate, blocks 150 x 25 x 250 5 - 6 Chocolate, powder mix Agglomerates up to 20 - 30 up to 2Cocoa Agglomerates % 1 Crystal sugar Hard granules < 3 due to storage Disulphide Granules 60 x 60 x 10 ca. 3 Dyestuffs...

Open the catalog to page 4

Size reduction

Size reduction

Catalog excerpts

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