Screw Conveyor | Kiln ESP Dust Extraction Screw Conveyor for Cement Kiln Electrostatic Precipitator

Application

This screw conveyor is specially designed for dust discharge under cement kiln ESP hoppers, collecting fine kiln dust and transporting it to downstream conveying system.

• Cement rotary kiln ESP 1st stage dust collection
• Cement rotary kiln ESP 2nd stage dust collection
• ESP reserve / standby dust evacuation unit
• Also suitable for baghouse hopper dust, fly ash, raw meal dust

Working condition: fine abrasive cement dust, residual high temperature, continuous 24h running.

Key Features

• Fully enclosed trough design, dust tight, no fugitive dust emission
• Continuous low-speed conveying, minimize dust re-entrainment
• Wear-resistant flight design for abrasive kiln dust
• Multiple material options for high temperature and abrasion
• Variable speed drive to match ESP dust generation rate
• Flange connection directly matched with ESP hopper outlet
• Optional blockage detector, overload protection
• Split casing for easy maintenance of screw flight and shaft
• EN ISO welding standard, WPQ, WPS, QAP and material certificates available
• Factory FAT test with report, photos and video for witness inspection

Technical Specifications

Parameters customized per stage (1st stage / 2nd stage / reserve unit) according to ESP dust load Items below are general baseline; final data based on your P&ID and dust flow rate

Material & Optional Configurations

• Screw flight: hardfaced wear overlay, replaceable flight segments
• Sealing: gland packing seal, air purge anti-dust seal
• Safety instruments: choke / blockage switch, temperature sensor
• Surface finish: heavy anti-high-temperature paint
• Optional: standby interlock control for reserve conveyor

Reference Projects

Cement kiln ESP screw conveyor references

1. Cement plant rotary kiln ESP 1st stage screw discharge system
2. Cement kiln ESP 2nd stage fine dust extraction screw conveyors
3. ESP reserve standby screw conveyor for maintenance and redundancy

Site photos, FAT videos and GA drawings can be shared upon request.

Standards & Our Service

• Design & welding standard: EN ISO, ISO 9001
• Deliverable documents: GA drawing, assembly drawing, spare parts list, MTC, QAP, WPQ & WPS
• Pre-delivery: Factory FAT test with formal report, photos and video
• Technical support: Installation guidance, commissioning assistance, operator training
• Warranty: 12 months after commissioning or 18 months after delivery
• Long-term supply of spare parts: screw flight, shaft, seal, bearing assembly

FAQ

Q1: What is the difference between 1st stage, 2nd stage and reserve ESP screw conveyor?

A: 1st stage handles higher dust load with coarser kiln dust; 2nd stage carries lower dust load with finer dust. The reserve unit is standby for maintenance or emergency replacement. We adjust capacity, wear protection and drive accordingly.

Q2: Can it run continuously 24 hours for cement kiln ESP?

A: Yes. Designed for continuous duty under cement kiln operating cycle.

Q3: Is hardfacing wear protection available for the screw flight?

A: Yes, hardfacing overlay is optional for high abrasive kiln dust.

Q4: Can we attend FAT inspection?

A: Yes, witness FAT is available. Full test documentation will be provided.

Q5: What information do you need for quotation for these ESP screw conveyors?

A: Dust flow rate for 1st stage, 2nd stage, reserve unit; dust temperature, bulk density, conveying length, layout, flange interface size, required material and wear requirement.

Request Custom Technical Proposal

Fill in the form below, or send your requirement directly to our email . Our bulk solids engineer will reply within 24 working hours with layout drawing and formal offer.

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:

Step 2: Define Your Working Conditions

Please prepare the following parameters before contacting us:

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

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