Double Mixer Screw Conveyor for Ash Conditioning

Double mixer screw conveyor for ash conditioning manufactured for a power plant for conditioning ash from the boiler.

Main Features of the Mixer Screw for Ash Conditioning

• The two screw rotors run in mesh, separated by a gearbox – read more about screw rotors here
• The mixer screw is equipped with adjustable gland seals at the drive and non-drive end to ensure maximum tightness
• The double mixer screw is fitted with hinged covers for easy inspection and cleaning
• The mixer screw is equipped with four legs, making it easy to install on site

BEMA manufactures double mixer screws in stainless steel 1.4401, ensuring high corrosion resistance and long service life in environments with dust, moisture, and aggressive particles. All surfaces are ground and acid pickled for optimal durability and cleanability.

Designed for Demanding Operating Conditions

Ash handling places special demands on equipment. Therefore, each solution is adapted based on:

• Particle size and moisture content of the ash
• Requirements for mixing degree and homogeneity
• Temperature and process environment
• Capacity requirements and desired flow
• Integration into existing systems

You get a solution built for stable operation – even in continuous operation.

Controlled Conditioning and Dust Reduction

The double mixer screw is equipped with nozzles for water or additive dosing, ensuring that the ash is conditioned precisely and uniformly. This reduces dust, improves handling, and ensures a more stable downstream process.

Minimal Maintenance – Maximum Uptime

The heavy-duty construction, precise tolerances, and thoroughly tested components provide:

• Low wear
• Fewer stoppages
• Reduced energy consumption
• A service life exceeding standard solutions

When downtime is not an option, quality is the best investment.

Complete Consulting and Support

BEMA does not just deliver a mixer screw – we deliver a solution tailored to your process. We provide guidance on sizing, material selection, conditioning, control, and integration. In addition, we offer spare parts and service throughout the lifetime of the system.

BEMA has its own design department. Our technicians and engineers have many years of experience in the design and construction of all types of screw conveyors and mixer screws, particularly for industrial use.

FAQ – Double Mixer Screw Conveyor for Ash Conditioning

What is a double mixer screw conveyor used for?

A double mixer screw conveyor is used for efficient conditioning and homogeneous mixing of ash from boilers. The two screw rotors run in mesh, ensuring a uniform process that reduces dust and improves material handling.

Why choose a mixer screw in stainless steel 1.4401?

Stainless steel 1.4401 provides high corrosion resistance and long service life in environments with moisture, dust, and aggressive particles. The ground and acid pickled surfaces improve durability and make cleaning easier.

How does a double mixer screw conveyor ensure stable operation?

The heavy-duty construction, precise tolerances, and proven components result in low wear, fewer stoppages, and reduced energy consumption. This makes the solution suitable for continuous operation, where stability is crucial for the process.

Can the mixer screw be adapted to different ash types and process requirements?

Yes, the solution is adapted based on ash particle size, moisture content, temperature, desired mixing degree, and capacity requirements. Nozzles for precise water or additive dosing can be integrated, and the system can be designed to fit existing installations.

What advantages does a double mixer screw conveyor offer compared to a single screw?

A double mixer screw provides more intensive and uniform mixing because the two screw rotors work against each other. This ensures better conditioning, reduced clumping, and a more stable process, especially when handling dry or fine ash.