| Quantity: | |
|---|---|
| Product Overview |
The principle of slag cooling: The dry slag conveyor operates continuously, and high-temperature slag continuously falls on the belt of the slag conveyor. The high-temperature ash moves at low speed on the conveyor belt, and under the action of negative pressure (for coal powder boilers, the normal operating state of the furnace is negative pressure), a controlled small amount of ambient cold air enters the interior of the air-cooled dry slag conveyor in the opposite direction, gradually cooling the ash on the conveyor belt and completing combustion. Cold air and high-temperature ash undergo sufficient heat exchange, and the air absorbs the radiation heat of the boiler and the sensible heat of the ash. The air temperature rises to around 300-400 ℃ (equivalent to the secondary air supply temperature of the boiler) and enters the furnace. The cooling temperature of the slag drops to around 100 ℃. Dry slag conveyor, designed to meet the demanding needs of power generation and mining industries. With its modular and automated features, this conveyor system is built to deliver exceptional performance in even the harshest environments. Crafted with high-strength materials, our Dry Slag Conveyor ensures maximum durability and longevity. Its wear-resistant design guarantees smooth operation, minimizing downtime and maintenance costs. Additionally, the heat-resistant properties of this conveyor make it ideal for handling hot slag, providing a reliable and efficient solution for your operations. Our Dry Slag Conveyor is engineered to enhance productivity and streamline your processes. Its automated functionality allows for seamless integration into your existing systems, enabling efficient material handling and minimizing manual labor. With its modular design, this conveyor can be easily customized to fit your specific requirements, ensuring optimal performance and flexibility. Trust in our Dry Slag Conveyor to deliver exceptional results, offering a reliable and efficient solution for your power generation and mining needs. Experience the power of automation, strength, and heat resistance in one robust system. |
| Model series | DSJ series |
| Max handling capacity | 1-60 t/h/ 1-60 |
| Steel belt width | 500-1600 mm |
| Conveying length | 5-60 m customized |
| Lifting angle | 0-45° adjustable |
| Slag inlet temperature | ≤950℃ / |
| Slag outlet temperature | ≤200℃ (ambient air cooling) |
| Main motor power | 2.2-22 kW / 2.2-22 |
| Belt speed | 0.05-0.3 m/s adjustable |
| Body material | Q235B carbon steel, optional stainless steel |
| Electrical protection rating | IP55 / IP55 |
| Noise level | ≤75 dB (A) at 1m |
| Applicable boiler capacity | 35-1000 t/h/ |
| Control mode | Manual /semi-auto/full-auto PLC |
| Dust leakage rate | <0.1% sealed structure |
| Main structure service life | ≥15 years |
| Conveyor belt service life | ≥80000 working hours |
| Operating ambient temperature | -30℃ ~ +45℃ |
| Color option | Custom RAL color, standard industrial grey |
| Package type | Export wooden case + steel frame |
| 1 | This air-cooled dry slag extractor continuously transports and cools high-temperature boiler bottom slag without water consumption, cutting wastewater discharge and operating cost for thermal power plant slag handling. |
| 2 | The sealed steel belt structure prevents dust leakage, meeting strict urban power plant environmental emission requirements without extra dust collection equipment. |
| 3 | Ambient air flows through the sealed shell to cool slag from 950℃ to below 200℃, making the discharged slag directly transportable for building material recycling. |
| 4 | The main steel belt adopts high-temperature resistant alloy steel, with service life over 80000 hours, reducing replacement frequency and long-term maintenance cost. |
| 5 | We provide turnkey solutions including design, manufacturing, on-site installation guidance and commissioning, saving project coordination time for EPC contractors. |
| 6 | This equipment is suitable for retrofit projects of old hydraulic slag removal systems, adapting to existing site space without large-scale civil works. |
| 7 | The automatic belt tensioning and deviation correction system ensures stable long-term operation, reducing manual adjustment workload for on-site operators. |
| 8 | Compared with traditional wet slag removal, this system saves 95% of water, ideal for power plants located in arid or water-scarce regions. |
| 9 | All electrical components use IP55 protection grade, adapting to dusty, high-temperature industrial plant environments without frequent failure. |
| 10 | We support custom length from 5m to 60m, and lifting angle from 0 to 45 degrees, to perfectly match different site layout and slag discharge height. |
| 11 | The modular assembled design reduces on-site installation time by 40% compared with welded integrated structure, shortening project construction period. |
| 12 | Residual heat in cooling air can be recovered and fed back to the boiler combustion system, improving overall plant thermal efficiency. |
| 13 | Low operating noise below 75dB meets factory area noise control standards, suitable for power plants near residential zones. |
| 14 | We provide 12 months warranty and 24-hour technical response, with common spare parts in stock for fast global delivery. |
| 15 | The equipment is compatible with 35t/h to 1000t/h coal-fired boilers, biomass boilers, and waste incineration boilers for multi-scenario use. |
| 16 | No water contact avoids slag quenching hardening, making the discharged dry slag easier for subsequent crushing and recycling processing. |
| 17 | The fully sealed structure prevents outdoor rainwater from entering, avoiding slag caking and blockage during long-term outdoor operation. |
| 18 | Optional PLC control system supports remote monitoring via mobile or PC, allowing operators to check equipment status without entering the plant. |
| 19 | Wear-resistant lining plates are installed at the slag inlet area, resisting high-temperature slag impact and extending shell service life. |
| 20 | Standard export wooden frame packaging ensures no damage during long ocean transportation, suitable for global project delivery. |
| 21 | The conveyor belt speed is adjustable from 0.05m/s to 0.3m/s, matching different slag output and cooling effect requirements. |
| 22 | This dry slag system avoids the problem of sluice pipe scaling common in hydraulic slag removal, reducing annual cleaning and maintenance workload. |
| 23 | Optional explosion-proof electrical components are available for special working conditions with combustible gas in the plant. |
| 24 | The equipment structure uses Q235B carbon steel with anti-rust painting, with optional stainless steel material for highly corrosive ash conditions. |
| 25 | Our engineering team will provide free on-site measurement and layout design for large power plant projects within 7 working days. |
| 26 | The discharged dry slag has stable quality, can be sold directly to brick factories or cement plants, creating extra revenue for power plant owners. |
| 27 | No slag water pond is required, saving large land area for new power plant construction projects and reducing land acquisition cost. |
| 28 | The equipment operates stably in -30℃ to +45℃ ambient temperature, suitable for both frigid northern regions and hot tropical areas. |
| 29 | We provide English operation manual and on-site operation training for local plant workers, ensuring smooth handover after installation. |
| 30 | Multiple safety protection devices are installed: belt slip alarm, over-temperature alarm, emergency stop button for safe on-site operation. |
| 31 | This system eliminates the need for slag water pump, slag water filter and water treatment equipment, reducing initial investment for new projects. |
| 32 | The side roller support structure reduces belt running resistance, cutting main motor power consumption by 15% compared with traditional conveyor. |
| 33 | We support custom color matching to RAL standard, aligning the equipment appearance with your factory overall color system. |
| 34 | For retrofit projects, we can reuse existing supporting steel structure on site, further reducing customer retrofit cost. |
| 35 | The ash leakage rate of the fully sealed shell is below 0.1%, meeting the highest industrial dust emission standard in global markets. |
| 36 | Optional frequency conversion drive is available, adjusting belt speed automatically according to boiler slag output, saving more power. |
| 37 | All spare parts are standard universal size, easy to source locally for customers in most countries, reducing spare parts purchase lead time. |
| 38 | The equipment is pre-assembled and tested in factory before delivery, reducing on-site debugging time to less than 3 days for standard models. |
| 39 | We have rich export experience to Southeast Asia, Middle East, Africa and South America, familiar with local customs clearance and project installation requirements. |
| 40 | Long-term technical support is provided after project handover, our engineers can solve equipment operation problems within 48 hours globally. |
FAQ
| 1 | What is an air-cooled dry bottom ash conveyor? | It is a boiler ash handling equipment that uses ambient air to cool hot bottom ash from 900°C to below 200°C while continuously conveying it out of the boiler, without any water. It replaces traditional wet slag system. |
| 2 | How does the dry ash conveyor work? | Hot bottom ash falls from boiler outlet onto the scraper chain bed. Ambient air enters through controlled vents, absorbs ash heat, and returns to furnace. The scraper chain slowly moves cooled ash out to discharge. |
| 3 | Which types of boilers is your dry ash conveyor suitable for? | It fits pulverized coal boilers, CFB boilers, biomass boilers, waste incineration boilers and industrial steam boilers with bottom ash discharge temperature up to 950°C and capacity 5-100 t/h. |
| 4 | Does the dry ash conveyor really need no water? | Yes, 100% waterless. It eliminates slag pool, slurry pump, dewatering bin and water treatment, saving huge water cost especially for power plants in arid regions. |
| 5 | Can the dry ash conveyor recover heat from bottom ash? | Yes. The cooling air absorbs heat from hot ash and returns to boiler furnace as preheated combustion air, typically improving boiler efficiency by 0.3-0.8% and reducing coal consumption. |
| 6 | What is the handling capacity range of your dry ash conveyor? | Standard range is 5 to 100 tons per hour, adjustable by VFD according to boiler load. Larger capacity can be customized for utility boiler projects. |
| 7 | What is the maximum ash temperature your conveyor can handle? | Design inlet temperature is up to 950°C. Contact parts use heat-resistant alloy steel and refractory insulation to withstand thermal shock from hot bottom ash. |
| 8 | What is the ash discharge temperature after cooling? | Outlet ash temperature is controlled below 200°C, making ash safe for operators and suitable for direct belt conveyor, silo storage or truck loading. |
| 9 | What material is the scraper chain made of? | We use high-alloy wear-resistant roller chain (MnB / 40Cr / special heat-treated steel) with hardened pins and bushings, designed for abrasive bottom ash with 24/7 continuous duty. |
| 10 | Which drive brands do you use? | Standard drives are from SEW, Siemens or ABB gear motors with variable frequency control. Domestic Chinese brand (BONENG, TENCH) is available for cost-sensitive projects. |
| 11 | Can the dry ash conveyor integrate into our DCS system? | Yes. Our PLC control cabinet (Siemens / Mitsubishi) supports Modbus, Profibus or Ethernet communication, integrating speed, temperature, vibration and fault signals into plant DCS. |
| 12 | Do you accept OEM and custom design based on our drawings? | Yes. We accept customer drawings, boiler parameters and site conditions. Our engineering team provides general arrangement, foundation drawing and electrical schematic within 7 days. |
| 13 | Can you replace our existing wet slag system with dry conveyor? | Yes, we provide retrofit service: on-site measurement, reverse engineering, keeping existing foundation and silo interface, minimizing civil work and plant shutdown during conversion. |
| 14 | What are the standard dimensions of the conveyor? | Standard length 5-40 m, housing width 800-2000 mm, inclined angle 0-30°. All dimensions are customized per boiler outlet and plant layout. |
| 15 | How much power does the dry ash conveyor consume? | Drive power is 4-37 kW depending on capacity, and electricity consumption is typically below 2 kWh per ton of ash, much lower than wet slag system including slurry pump. |
| 16 | What is the noise level of the equipment? | Noise level is below 85 dB(A) measured at 1 meter from housing. Sound insulation cover is available for plants with strict environmental requirements. |
| 17 | Can the cooled bottom ash be reused? | Yes. With moisture below 5%, dry bottom ash is widely used as cement additive, road base material, concrete aggregate and construction brick raw material, improving ash disposal revenue. |
| 18 | How do you pack the dry ash conveyor for export? | We use export-standard sealed wooden cases with vacuum anti-rust film for machined parts, container loading by forklift or crane, suitable for ocean freight to all over the world. |
| 19 | What is your warranty period and after-sales support? | We provide 12 months warranty after commissioning. Spare parts are in stock for fast delivery, and experienced engineers are available for on-site installation and commissioning. |
| 20 | What certifications does your dry ash conveyor have? | We have ISO 9001 quality system and CE certification. Design complies with GB, ASME and DIN standards, meeting international power plant project procurement requirements. |
| 21 | What is the delivery time for a dry ash conveyor order? | Standard model lead time is 35-45 days. Custom or large capacity equipment takes 60-90 days, depending on technical drawing confirmation and material preparation. |
| 22 | What is your minimum order quantity? | MOQ is 1 set. We support single prototype order, small batch and mass production for EPC projects, with flexible cooperation terms. |
| 23 | How can we get a detailed quotation? | Please provide boiler model, ash discharge rate, site layout drawing and required brand preference. We will send technical proposal, drawing and competitive quotation within 7 working days. |
| 24 | What payment terms do you accept? | Standard: 30% T/T deposit upon contract, 70% balance before shipment. L/C at sight is acceptable for large orders. We also support OA for long-term strategic customers. |
| 25 | Which Incoterms do you use for export? | We support FOB Qingdao, CIF destination port, CFR and DDP terms. We have rich experience in sea freight, rail freight to Central Asia and trucking to Russia. |
| 26 | Which spare parts should customers keep in stock? | Recommended wear parts: scraper flight, chain link, track roller, seal strip and drive coupling. We provide spare parts list with the machine and offer 24-hour delivery for urgent orders. |
| 27 | Do you provide on-site installation service? | Yes. We send 1-2 experienced engineers to customer site for installation supervision, commissioning and operator training, with visa and round-trip flight arranged. |
| 28 | Can we inspect the equipment before shipment? | Yes. We welcome customer or third-party inspection (SGS, BV, TUV) at our factory. We run factory load test, chain running test and pressure test, and provide detailed test report. |
| 29 | How do you protect the conveyor from ash jam and overload? | Equipped with torque limiter, safety clutch, current monitoring and VFD auto-reverse function. If ash jam occurs, system alarms, stops and reverses automatically to protect chain and motor. |
| 30 | Why should we choose your dry ash conveyor over other suppliers? | We have 15+ years experience, exported to 30+ countries, provide complete engineering package, factory direct price, strict quality control and 12-month warranty, with proven references in thermal power sector worldwide. |
