Heating Screw Conveyor
Our Heating screw conveyors are often used for the heating, drying, or heat treatment of a wide range of bulk materials, including petroleum coke, pasty media, dust, pastes, and sludges. Our heating screw conveyors introduce a defined quantity of heat into the product to heat or melt it, to evaporate liquid components or to start or end a reaction.
As some bulk products have a strong tendency to stick and bridge, they often form an insulating layer on the hollow flights. Depending on the conditioning of the bulk product, the sludge, or the paste, we have created the tried and proven alternative of a self-cleaning system for equipping the heating screw conveyor in order to guarantee consistently clean surfaces on the heating screw conveyor surface. Because they are the primary surfaces for heat transmission, it is possible to guarantee that the system operates efficiently.
The product range extends from heating screw conveyors and dryers with a throughput rate of a few kg/h up to 60t/h – on request, the delivery is completed by including especially adapted piping with modular insulation, which enables connection to a central inlet and outlet point. All necessary valves, flow meters and temperature measurement devices are optionally already installed upon delivery as part of the scope of supply.
Heating Screw Conveyor - Benefits
A Heating Screw Conveyor combines bulk material conveying and indirect thermal processing in a single compact unit. Using advanced hollow-flight technology, it provides efficient heat transfer while reducing energy consumption, equipment footprint, and process time.
Efficient Heat Transfer −
The hollow-flight design maximizes the heat transfer surface, ensuring rapid and uniform heating of bulk materials.
Conveying and Heating in One System +
Reduced Energy Consumption +
Reliable Product Quality +
Long Service Life +
Compact Process Solution +
Heating Screw Conveyor - Features
A Heating Screw Conveyor combines bulk material conveying and indirect thermal processing in a single compact unit. Using advanced hollow-flight technology, it provides efficient heat transfer while reducing energy consumption, equipment footprint, and process time.
- Hollow-Flight Heat ExchangeHollow screw flights provide efficient heat transfer.
- Single or Twin Screw DesignAvailable in single- or twin-shaft configurations.
- Multiple Heating OptionsCompatible with thermal oil, steam, hot water, or electric heating.
- Self-Cleaning TechnologyPrevents material buildup and maintains heat transfer.
- Modular Insulation & PipingIntegrated insulation, piping, valves, and sensors.
- Custom Engineered DesignConfigured for capacities up to 60 t/h and specific applications.
Heating Screw Conveyor - Technical Specification
Throughput
up to 60 t/hr
Operation temperatures
up to 450°C
Shaft version
Single or multiple
Optional modular insulation
Optional with piping, fittings and valves
Use of proven and tested hollow flights
Heating Screw Conveyor
The challenge mastered by extensive development is compensation of the thermal expansion of the worm shaft, which is completely absorbed by the especially developed our carbon bearings, with the smallest possible maintenance work and costs. The tongue-shaped shaft passages enable individual worm shafts to be replaced easily without dismantling the end wall or the other shafts. This minimizes downtime significantly.
To integrate the heating screw conveyors into the planning of your plant in the best possible way, a large number of heat sources can be used, such as heat transfer oils and steam under various conditions.
We offer innovative solutions for efficient material handling combined with heating capabilities. Our heating screw conveyors are specifically designed to transport materials while providing a controlled heating environment, ensuring optimal temperature conditions for your production processes.
With our heating screw conveyors, you can effectively heat materials such as powders, granules, and bulk solids during transportation. This is particularly beneficial for industries that require heat treatment, drying, or thermal processing of materials. Our conveyors are designed to evenly distribute heat throughout the material, ensuring uniform heating and consistent results.
We understand that each industry has unique heating requirements, and that’s why our heating screw conveyors are customizable to meet your specific needs. From adjustable temperature controls to variable speed options, we can tailor the conveyor to suit your desired heating parameters.
In addition to efficient material heating, our heating screw conveyors offer all the advantages of a standard screw conveyor. They provide smooth and reliable material transportation, whether it’s vertically, horizontally, or at an incline. Our conveyors are built with high-quality materials, ensuring durability and longevity, even in demanding production environments.
By implementing our heating screw conveyors, you can enhance your production processes, improve product quality, and increase efficiency. The controlled heating environment ensures precise temperature control, reducing the risk of material degradation or inconsistencies.
Frequently Asked Questions
A Heating Screw Conveyor is a thermal processing and conveying system designed to heat, dry, melt, or thermally treat bulk materials while transporting them through the screw conveyor. It uses a heated screw flight and shaft to provide efficient heat transfer directly to the product.
A Heating Screw Conveyor transfers heat from a heating medium, such as thermal oil, steam, or electric heating, through hollow screw flights and the shaft into the conveyed material. The product is continuously conveyed while receiving controlled thermal treatment.
Heating Screw Conveyors are suitable for a wide range of bulk materials, including petroleum coke, powders, pastes, sludges, dusts, and other heat-sensitive or temperature-controlled products.
A Heating Screw Conveyor provides uniform heating, high thermal efficiency, compact design, gentle product handling, and reliable continuous operation. The hollow flight design increases the heat transfer surface and improves overall process performance.
A Hollow Flight Heating Screw Conveyor uses hollow screw flights that allow the heating medium to circulate through the flights. Since the screw flight is the main contact surface with the product, it provides efficient heat transfer compared with conventional designs.
A Self-Cleaning Heating Screw Conveyor is designed for sticky, adhesive, or bridging materials that may build up on the screw flights. The special twin-shaft design creates high relative movement between surfaces, continuously removing product buildup and maintaining efficient heat transfer.
A Self-Cleaning Heating Screw Conveyor is recommended when handling materials with high adhesion, pasty consistency, or a tendency to form insulating layers on the heating surfaces. It helps maintain clean heat transfer surfaces and prevents reduced performance caused by product buildup.
Heating Screw Conveyors are commonly used in industries such as aluminum production, chemical processing, food processing, waste treatment, and other applications requiring controlled heating, drying, or thermal conditioning of bulk materials.
Depending on the application requirements, Heating Screw Conveyors can use different heat sources, including thermal oil, steam systems, and electric heating. The selection depends on the required temperature, process conditions, and available utilities.
