Silo and Bunker Activator

Key Benefits

Effective material activation and discharge
Safe, careful material handling
Easy maintenance and operation

What we offer

Optimise your material discharge with Silo and Bunker Activators

Optimised material transport begins with specially designed discharge systems, which can only be achieved by the use of specifically designed material activation equipment.

First-in – first-out

In order to achieve the best material discharge performance, you need a system that guarantees an optimum material flow, from top to bottom. Our activators largely eliminate problems associated with core flow and material segregation. We ensure the “first-in – first-out” principle with activators that provide discharge from the entire silo or bunker bottom area.

We custom design activation systems for circular silo and rectangular bunker installations to make sure they are ideally suited to the specific task. Our systems afford a maximum of flexibility for storage capacities in the range of 10 m³ to 1,000 m³ (11 yd³ to 1,094 yd³). They are designed for materials having a solids content from 20% to 100%.

Proven activator solutions include the following systems:

Sliding frame activator – providing low installation height, a powerful drive and easy maintenance
Rotor activator – offering a variety of rotor types and electric or hydraulic drive
Twistex® – eliminating bridging with movable, swinging arms and an electromechanical drive; provides easy maintenance
Push-floor activator – delivering economical discharge for rectangular bunkers

All types of activators operate in combination with one or several extraction and metering units (screw conveyors or TKF drag chain conveyors).

Metered extraction

With all of our activator systems, discharge takes place via screw conveyors that feature a progressive pitch for volumetric pre-metering. Because of this, the screw conveyors remove the material over the whole length of the silo or bunker opening at a constant or variable speed.

Complete silo and bunker systems

We offer complete systems that are ideal for sewage treatment, incineration, drying, processing (including wood processing), paper and chemical industries, and pyrolysis plants for refuse-derived and substitute fuels. Our turnkey solutions are the result of years of experience and know-how in plant and processing technology, engineering and production, and internationally experienced erection and servicing.

Key Benefits

Handle with care - Silo and Bunker Activators

Effective material activation and discharge: With several options for activator types, we custom design an activation system that is best-suited for your non-free-flowing material to ensure that it meets your goals, include first-in – first-out discharge.
Safe, careful material handling: Our field-tested and proven systems are suitable in all application areas and industries. Built for circular silo and rectangular bunker systems, they allow for efficient, dust-free, odourless, gentle handling of your sensitive materials.
Easy maintenance and operation: We design all of our activator systems to be operator- and maintenance-friendly, with few moving parts. Any substantial mechanical parts that require maintenance are designed for easy access.

Product Features

Application-specific Silo and Bunker Activators

Our silo and bunker activation systems are specifically designed to handle a variety of bulk materials, with the goal of achieving safe discharge and low energy consumption.

All of our activator types operate in combination with one or several extraction and metering units. They feature fixed or infinitely variable speed electric or hydraulic drives.

Typical industries and applications

Processing plants: Silo storage and loading of compost, lightweight waste components, and slag
Wood processing industry: Storage, conveying and metered feeding of woodchips and bark
Paper industry: Silo storage and conveying of paper pulp
Sewage treatment plants: Transport, silo storage, and truck loading of pre-dewatered sludges from filter presses, screen belt presses, or centrifuges
Incineration plants: Receiving stations tor predewatered sludqes, Surge storage and spreading of sewage sludges. Silo storage, transport, and truck loading of fly ash and residual materials
Drying plants: Sludge receiving stations, surge capacity storage, metered feeding of dryers; in-plant handling, silo storage and loading of dried sludges

Activator types

Sliding Frame Activator
Features	System integration into the circular silo Low installation height Powerful drive Optimum activation performance Easy maintenance
Applications	Slurries, pasty materials; industrial, municipal and dried sewage sludge, etc.
Silo capacity	20 m³ to 1,000 m³ (22 yd³ to 1,094 yd³)
Silo diameter	2,600 mm to 8,000 mm (102-in to 315-in)
Drive	Hydraulic station with frequency-controlled drive
Discharge	Volumetric metering via discharge screw

Rotor Activator
Features	Various rotor types Variable arrangement for the discharge screw Electric or hydraulic drive System-specific integration into the circular silo
Applications	Wood shavings, wood chips, pellets, slurries, pasty materials, coal, ash, dust and much more
Silo capacity	20 m³ to 200 m³ (22 yd³ to 219 yd³)
Silo diameter	2,600 mm to 4,700 mm (102-in to 185-in)
Drive	With planetary gear and hydraulic or electric motor
Discharge	Volumetric metering via discharge screw

Twistex® Activator
Features	Ideal for non-free-flowing materials from large silos Control of the discharge arm via specially developed, low-wear mechanics Modular system for different silo volumes and diameters Fits into existing drive units from other manufacturers
Applications	Wood shavings, wood chips, alternative fuels, pellets and much more
Silo capacity	100 m³ to 800 m³ (131 yd³ to 1,046 yd³)
Silo diameter	4,000 mm to 7,000 mm
Drive	With planetary gear and hydraulic or electric motor
Discharge	Volumetric metering via discharge screw

Push-floor Activator
Features	Activation and discharge from rectangular bunkers Appropriate for above- and below-ground Suitable for installation in reception and metering bunkers Configurations dependent on bunker size Standardised sizes for cost savings
Applications	Wood shavings, wood chips, wood pellets, compost, waste, filter cake, dewatered sludge and much more
Bunker size	10 m³ to 1,000 m³ (11 yd³ to 1,094 yd³)
Push-pull activator length	5 m to 30 m (5.5 yd to 33 yd)
Bunker width	Multiple of the line width of 1,500 mm
Drive	Hydraulic station with frequency-controlled drive
Discharge	Volumetric metering via discharge screw or metering roll