ATRITOR DRYER-PULVERISER

The Atritor Dryer-Pulveriser. A long established product for the simultaneous drying and milling of minerals, chemicals, waste materials etc. It is also capable of blending materials and of surface modifying performance minerals. It is a compact flash dryer with a high evaporation capacity and drying efficiency.

Inlet temperatures as high as 600° C are used and evaporating capacities up to 6000 kg/hour are achievable from a single unit.

The Atritor Cell Mill is a  recent development of a multi-rotor vertical shaft mill for producing very fine powders by the utilization of impact, shear and attrition forces. Modular in construction, it can be tailored to the specific need of a project. It can be fitted with an integral classifier for control of product top-size. It is an efficient dryer with inlet temperatures up to 4 00 º C. Special designs are available for the efficient application of surfactants to modify the surface chemistry of products.

ATRITOR DCM MILL

The Atritor DCM Mill (Dynamic Classifier Mill). A high speed grinding mill with an integral, independently driven dynamic classifier, producing a narrow size distribution. The feed first enters the classifier to remove in-specification material before the oversize enters the grinding zone.

INTERNAL FAN ATRITOR

Size reduction occurs in three stages. The material to be processed is delivered to the Atritor by suitably designed feeding equipment and is immediately entrained in the incoming air stream.

It first enters the swing hammer zone where it is reduced from 50 mm to 5 mm by the action of swing hammers attached to the main rotor centre and operating inside a ring of screens. The lower section of the screen ring provides a receptacle where foreign contaminants in the feed can be rejected. This swing hammer section is omitted for certain applications. Secondary size reduction occurs in the first pulverizing zone of the Atritor by the action of fixed hammers on the main rotor.

Passing over the periphery of the rotor, the material enters the main pulverising chamber where it is subjected to a combination of opposing centrifugal and centripetal forces, superimposed on intensely turbulent air patterns generated by alternate rings of rotating and stationary pegs. As the size of the particle is reduced the centripetal air drag forces become dominant and draw the material towards the size control zone at the centre of the rotor, where rotating rejectors intercept and return larger particles to the attrition zone, whilst permitting the free passage of finer particles from the Atritor. The number of rejectors thus controls ultimate particle size.

TURBO SEPARATOR

The Atritor Turbo separator is the most versatile packaging separation machine capable of separating liquids and solids from numerous types of packaging and containers.

Custom manufactured with various inlet and discharge designs to meet specific separation requirements

• Variable shaft speeds of 100 rpm to 2,500 rpm to enhance separation efficiency.
• Models available in carbon steel or grade 304 stainless steel.
• Sanitary design version available.
• Available in capacity from 1 tonne per hour to 39 tonne per hour.
• CIP (clean in place) versions available
• Up to 99% efficient in product recovery.

Applications

Separation of products from packaging, Separation of paper from gypsum in plasterboard

Typical materials

Cereals, Cans, Household products, Pet foods, Plasterboard, Potato crisps, Sachets, Sandwiches, Supermarket waste

Range information

Available in 4 sizes with many configurable options

Air-Swept Tubular (AST) Dryer

Cutaway view of AST Dryer plant

Typical AST Dryer plant

1	Hot air generator	5	Cyclone
2	Mass flow feeder	6	Filter
3	AST Dryer	7	System fan
4	Optional gravity discharge

 

Applications

Drying

Typical materials

Brewer’s grains, Alumina trihydrate, Chicken manure, Coal fines, Iron oxides, Kaolin, Titanium dioxide

Range information

Available in 9 sizes with more than 40 possible configurations

Microniser

Applications

Ultra-fine grinding

Typical materials

Cocoa, Fine powders, Lactose, Pharmaceuticals, Titanium dioxide

Range information

Available in 12 sizes with many possible configurations