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screw-reclaimer

Short Description:

Reclaimer Screw Shaft is the core heavy-duty component for ash silo reclaimers and bulk solid reclaiming systems. Specially designed for continuous scraping, stirring and conveying of compacted fly ash, dry powder and granular materials, this robust screw shaft solves material bridging, compaction and dead zone accumulation. Featuring high hardness, anti-wear performance and strong torque resistance, it ensures stable, uniform and efficient material reclaiming for power plant ash silos and industrial bulk storage systems.

Product Detail

FAQ

How to Choose the Right Conveyor

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Detailed Product Overview

Reclaimer Screw Shaft is a customized heavy-duty spiral shaft exclusively matched with silo reclaimer equipment. Different from ordinary conveyor screw shafts, it adopts an optimized wide-pitch spiral structure and thickened integrated shaft body, focusing on breaking compacted dry ash and stagnant materials while completing quantitative conveying. The integral forging shaft body eliminates shaft bending and deformation under long-term heavy-load and torsion working conditions.
All screw shafts undergo overall quenching and hardening treatment, with wear-resistant surfacing welding on spiral blade surfaces to resist long-term scouring and friction of fly ash and fine powder. The precision machined shaft head and spline structure ensure perfect matching with reclaimer drive devices, realizing stable torque transmission and low-noise operation. It effectively solves common silo problems such as material hardening, uneven discharging and silo blockage, supporting 24-hour continuous automatic reclaiming operation.

Core Product Advantages

  • Heavy-duty Torsion Resistance: Integral thickened shaft body and optimized structural design withstand strong torque and heavy load, no bending or fracture during long-term operation.
  • Superior Wear Resistance: Overall heat treatment + blade wear-resistant welding process greatly extends service life, adapting to long-term dry ash abrasion.
  • Anti-blocking & Stirring Function: Professional wide-pitch spiral design breaks compacted ash layers, eliminates bridging and dead zones, ensuring uniform silo discharging.
  • Stable Torque Transmission: Precision spline and shaft head machining ensures high matching accuracy with driving equipment, stable operation and low vibration.
  • Customized & High Adaptability: Customizable length, diameter, spiral pitch and blade thickness to fit different sizes of ash silo reclaimers and conveying systems.
  • Low Maintenance & High Stability: Integrated solid structure with low failure rate, reducing frequent replacement and downtime maintenance costs.

 Application Scope

Mainly applied in thermal power plant ash silo reclaiming systems, large dry ash storage silos, cement powder silos, metallurgical bulk material warehouses and environmental protection dust removal systems. It is the core spare part for fly ash reclaimer machines, responsible for breaking up compacted materials and continuous uniform ash reclaiming and conveying.

 Technical Specifications (Marketing Version)

Main Material: 45# Steel, 40Cr Alloy Steel, Wear-resistant Alloy Steel
Shaft Diameter Range: DN80–DN300 (Customized Length & Pitch Available)
Surface Treatment: Overall quenching, wear-resistant surfacing welding
Working Condition: Dry fly ash, compacted powder, negative/normal pressure silo system
 Features: Torsion-resistant, anti-wear, anti-blocking, high strength, stable transmission, customized support


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  • SELECTION & TECHNICAL QUESTIONS

    Q1: How do I select the right conveyor model? What information should I provide?

    > To recommend the most suitable solution, please provide the following details:

    > 1. Material type: What material are you conveying? (e.g., fly ash, wood chips, biomass pellets, bottom ash, etc.)

    > 2. Material properties: Particle size, temperature, moisture content, abrasiveness

    > 3. Capacity requirement: How many tons per hour (t/h) do you need?

    > 4. Installation conditions: Conveying distance, incline angle, space limitations

    > 5. Application industry: Which industry is this for? (e.g., waste-to-energy plant, biomass power plant, cement plant)

    > You can also email us or contact us via WhatsApp. Our engineers will get back to you within 24 hours.

    Q2: What is the difference between screw conveyors and chain conveyors? Which one should I choose?

    > Both types have different applications:

    > – Screw Conveyors: Best for powdery and small-grain materials (e.g., fly ash, cement powder). Good sealing performance, simple structure, low maintenance cost.

    > – Chain Scraper Conveyors: Best for bulky, highly abrasive materials (e.g., bottom ash, municipal solid waste, biomass fragments). Supports multiple inlet and outlet points.

    > – Bucket Elevators: Ideal for vertical or steep-incline material lifting.

    > If you are not sure, tell us your material and working conditions, and our engineers will help you choose.

     

    Q3: Can your equipment handle high-temperature materials? What is the maximum temperature?

    > We can customize equipment according to material temperature:

    > – Standard type: 0~80°C, carbon steel

    > – Medium temperature type: 80~200°C, thickened wear-resistant liner

    > – High temperature type: 200~400°C, special heat-resistant steel, optional cooling jacket

    > Please tell us your material temperature, and we will recommend the most suitable material solution.

    Q4: Are there any limits on conveying distance and lifting height?

    > Standard design range:

    > – Screw conveyor: Single section up to 70 meters; multiple sections can be connected for longer distances

    > – Chain conveyor: Single machine up to 60 meters

    > – Bucket elevator: Lifting height up to 50 meters

    > We can also customize for extra-long distances or special angles. Contact us for detailed solutions.

    Q5: Do you provide explosion-proof design?

    > Yes. For explosive and flammable conditions such as pulverized coal and biomass dust, we offer:

    > – Explosion-proof motors (Ex d IIB T4 standard)

    > – Reserved openings for explosion vents / rupture discs

    > – Fully sealed structure to prevent dust leakage

    > Please specify your explosion-proof rating requirements.

    CUSTOMIZATION & MANUFACTURING

    Q6: Do you support customization? What is the lead time?

    > Over 90% of our equipment is customized according to customer working conditions. Standard models take about 90–120days. Special customizations take 120–180 days, depending on configuration complexity.

    Q7: What material options do you offer?

    > Common materials include:

    > – Carbon steel (Q235B): Standard working conditions

    > – Wear-resistant steel (NM400/NM500): Highly abrasive materials

    > – Stainless steel 304/316L: Food, chemical, corrosion-resistant requirements

    > – Bi-metal wear-resistant composite plate: Extreme abrasion conditions

    > We will recommend the most cost-effective material solution based on your material properties.

    Q8: What certifications do you have?

    > We hold the following certifications:

    > – ISO 9001:2015 Quality Management System

    > – ISO 14001 Environmental Management System

    > – ISO 45001 Occupational Health & Safety Management

    > – CE Certification (EN 1090 Steel Structure)

    > If you need scanned copies of specific certificates, please contact us.

     

    DELIVERY & LOGISTICS

    Q9: Which countries do you export to? Do you have export experience?

     

    > Our equipment has been exported to more than 20 countries worldwide, including:

    > – Europe: Germany, France, Poland, Turkey, etc.

    > – Southeast Asia: Singapore, Thailand, Indonesia, Vietnam, etc.

    > – Middle East: Saudi Arabia, UAE, etc.

    > – South America**: Brazil, Chile, etc.

    > We are familiar with the full export process: packaging, customs declaration, and ocean freight. We can provide FOB, CIF, and other trade terms.

     

    Q10: What is your packaging method? Is it suitable for long-distance ocean shipping?

     

    > Export-standard packaging:

    > – Large items / complete machines**: Rust prevention + waterproof film + fumigated solid wood pallet

    > – Precision components: Wooden case with shock-absorbing filling

    > – Random accessories: Categorized packing with detailed packing list

    > All wooden packaging meets IPPC fumigation standards for direct customs clearance.

     

    Q11: What is your minimum order quantity?

    > We do not have a strict minimum order quantity. Single-unit orders are welcome. Bulk orders can enjoy more favorable pricing.

     

    INSTALLATION & AFTER-SALES

     

    Q12: Do you provide installation guidance? Do engineers need to come to site?

     

    > We offer two service options:

    > 1. Remote guidance: Detailed installation drawings and operation manuals, video guidance for installation (free of charge)

    > 2. On-site service: Dispatch engineers to site for installation and commissioning (travel costs are additional)

    > Most customers choose remote guidance. Our equipment is designed as a modular structure for easy installation.

     

    Q13: What is the warranty period? What are the wearing parts?

    > Standard warranty period is 12 months (from the date of arrival at port).

    > Wearing parts list:

    > – Chain / screw flights: Approximately 1–3 years, depending on material abrasiveness

    > – Liners: Approximately 2–4 years

    > – Bearings: Approximately 2–3 years

    > We recommend ordering a wearing-parts spare kit together with your first order.

     

    Q14: How do you solve problems during operation?

     

    > We provide 7×24 technical support:>

    > – Response within 24 hours for technical issues

    > – Remote video troubleshooting guidance

    > – Engineer on-site service when necessary

    > – Common spare parts in stock for fast delivery

     

    QUOTATION & COOPERATION

    **Q15: How can I get a quote? How long does it take?

    > Quotation process:

     

    > 1. You provide material parameters, capacity, installation conditions, and other requirements

    > 2. Our engineers evaluate and select the appropriate model

    > 3. Formal quotation and technical proposal provided within 7 working days

    > You can contact us via email, or the online inquiry form.

     

    Q16: What are your payment terms?

    > Standard payment terms:

    > – 30% advance payment: After contract signing, to start production

    > – 70% balance: Before shipment, or against copy of Bill of Lading

    For long-term cooperative customers, more flexible payment terms can be negotiated.

    Follow these 3 steps to find your ideal conveyor solution


    Step 1: Identify Your Material Type

    Different materials require different conveyor designs. Tell us what you are conveying:

     

    Material Category Examples Recommended Conveyor Type
    Powder / Fine Granules Fly ash, cement powder, lime powder Screw Conveyor
    Small Granules / Pellets Biomass pellets, plastic granules, grain Screw Conveyor / Belt Conveyor
    Fragments / Chips Wood chips, bark, agricultural residues Chain Scraper Conveyor
    Bulky / Abrasive Bottom ash, slag, MSW, clinker Chain En-Masse Conveyor
    Vertical Lift Any bulk material needs vertical transport Bucket Elevator

    Step 2: Define Your Working Conditions

    Please prepare the following parameters before contacting us:

     

    Parameter Why It Matters Example
    Capacity (t/h) Determines conveyor size and power 10 t/h, 50 t/h, 100 t/h
    Conveying Distance (m) Determines machine length 15m horizontal, 30m incline
    Incline Angle (°) Affects capacity and design 0° horizontal, 30° incline
    Material Temperature (°C) Determines material grade Ambient, 150°C, 300°C
    Moisture Content (%) Affects discharge design Dry, damp, wet (needs dewatering)
    Abrasiveness Determines liner thickness Low, medium, high
    Application Industry Determines certification needs Power plant, cement, mining, recycling

    Step 3: Choose Configuration Options

    Based on your answers above, our engineers will recommend:

    Material grade — carbon steel / wear-resistant steel / stainless steel

    Sealing type — open trough / fully enclosed / gas-tight

    Drive system — motor power, gearbox brand, speed range

    Auxiliary options — explosion-proof motor, cooling jacket, cleaning device, level sensors


     Not Sure Where to Start?

    Send us your basic requirements, and our engineers will design a customized solution for you — completely free.

    Email: bootec@bootecgroup.com  Response time: Within 24 hours

    [REQUEST A FREE QUOTATION →]

     

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