rotary sand dryer

The rotary sand dryer is a professional large-scale drying equipment specially designed for dry mortar production lines, focusing on the dehydration and drying of bulk granular materials represented by river sand, quartz sand and manufactured sand. As the core front-end processing equipment of dry mortar production, it solves the core problem of high moisture content of raw sand that restricts mortar product quality and production efficiency. Adopting advanced triple-pass rotary drum structure and countercurrent heat exchange drying technology, the equipment realizes continuous, uniform and efficient drying of wet sand materials. Compared with traditional single-cylinder dryers, it features higher thermal efficiency, smaller floor space and more stable drying effect. It can stably reduce the moisture content of raw sand to the standard range required for dry mortar production, support continuous feeding for subsequent batching, mixing and packaging processes, and is perfectly compatible with full-automatic and semi-automatic dry mortar production lines to ensure consistent finished mortar quality and stable line operation.

• High Thermal Efficiency & Significant Energy Saving: Adopts triple-pass nested drum self-insulation structure and countercurrent hot air drying process. The thermal efficiency is up to 70%-85%, which is nearly twice that of traditional single-cylinder dryers. It effectively reduces fuel and power consumption, saving 30%-50% of operating energy costs for enterprises. The internal self-heat preservation design avoids heat loss and greatly improves heat utilization rate.
• Uniform Drying & Stable Product Quality: Equipped with multi-layer lifting and material distributing plates inside the drum, which can continuously flip and disperse wet sand materials, making materials fully contact with hot airflow in all directions. The final material moisture can be stably controlled within 0.5%-1%, with no wet core or uneven drying phenomenon, fully meeting the strict raw material standards of high-quality dry mortar, putty powder and thermal insulation mortar.
• Large Capacity & Continuous Operation: Supports large-volume continuous drying production with a wide adjustable range of processing capacity. It can adapt to 24-hour long-term heavy-load operation of large and medium-sized dry mortar production lines. The optimized drum rotating speed and material conveying design ensure smooth material operation without blockage, realizing stable and high-yield production.
• Compact Structure & Low Site Occupation: The integrated triple-pass compact design shortens the equipment length by about 60% compared with ordinary drying equipment with the same output, effectively reducing factory floor space and civil engineering investment. The modular structure is convenient for on-site installation, disassembly and transportation, adapting to various workshop layout conditions.
• Durable & Low Maintenance Cost: The drum and material contact parts are made of high-strength wear-resistant alloy steel, with anti-rust, high-temperature resistant and wear-resistant treatments. The key transmission and support components are reinforced, with low failure rate and long service life. The equipment has few vulnerable parts, simple daily maintenance, and low long-term operation and maintenance costs.
• Environmentally Friendly & Low Pollution: Matched with professional dust removal and waste gas treatment system, it realizes closed drying operation. It effectively suppresses dust overflow and reduces flue gas emission, fully complying with industrial environmental protection standards. The whole operation process is low-noise and low-pollution, improving the on-site production environment.
• Intelligent & Flexible Adjustment: Equipped with independent PLC intelligent control system, which can freely adjust drum rotating speed, hot air temperature and feeding speed according to material moisture and production capacity requirements. It supports one-click parameter setting and real-time operation monitoring, realizing automatic and unattended drying operation.

• Conduct a comprehensive inspection before startup every day, including drum rotating parts, transmission gears, belts, lifting plates and sealing components, to ensure no looseness, wear, deformation or foreign material blockage, and check the normal operation of the heat supply and dust removal system.
• Follow the standard startup sequence: start the equipment first for no-load preheating and stable operation, then start feeding. It is strictly prohibited to start with load to avoid motor overload, drum jamming and equipment damage.
• Control the uniform feeding speed and feeding volume strictly. Avoid excessive feeding causing material accumulation in the drum, drying dead corners and incomplete drying; avoid too little feeding resulting in energy waste and low production efficiency.
• Prohibit hard foreign matters such as iron blocks, stones and steel bars from mixing into wet sand materials to prevent scratching and damaging the drum lifting plates and transmission components during operation.
• Adjust the hot air temperature and drum speed reasonably according to the initial moisture of raw sand and production requirements. Avoid excessive temperature causing material scorching or equipment high-temperature aging, and low temperature leading to unqualified drying effect.
• Regularly clean the residual materials and dust inside the drum, feeding port, discharging port and heat exchange pipeline to prevent long-term material accumulation from affecting heat exchange efficiency and drying quality.
• Regularly lubricate transmission bearings, gears and other moving parts, check the wear degree of belts and lifting plates, and replace severely worn parts in time to ensure stable equipment operation.
• Cut off the total power supply and heat supply completely during equipment maintenance, debugging and cleaning. It is forbidden to open the sealing shell and touch operating components during equipment operation to avoid safety accidents.
• Keep the equipment operating environment dry and ventilated, regularly inspect electrical circuits, sensors and dust removal equipment to ensure sensitive signal response and normal supporting system operation.

• Raw sand drying and processing for full-automatic and semi-automatic dry mortar production lines
• Drying treatment of river sand, quartz sand and manufactured sand for tile adhesive, waterproof mortar, repair mortar and thermal insulation mortar production
• Dehydration and drying of granular building materials such as fly ash, slag and construction recycled sand in building material production workshops
• Standardized raw material pretreatment and drying processing for large-scale mortar factory batch production
• Supporting drying equipment upgrading and transformation for old mortar production lines to improve product qualification rate and production efficiency
• High-standard environmental protection drying projects for powder and granular building materials requiring low dust and low energy consumption

• Q1: What materials can the rotary sand dryer process?
  A1: It is mainly used for drying various granular building materials, including river sand, quartz sand, manufactured sand, fly ash, slag and construction recycled sand. It is widely applicable to raw material drying of various dry mortar products and meets the processing demands of different particle size and moisture materials.
• Q2: What is the final moisture of dried sand after processing?
  A2: The equipment can stably control the final moisture of materials at 0.5%-1%, and the moisture can be adjusted freely according to production process requirements. The dried sand has uniform moisture and no wet core, fully meeting the production standards of high-quality dry mortar.
• Q3: Is the equipment energy-saving compared with traditional dryers?
  A3: Yes. Adopting triple-pass self-insulation structure and countercurrent heat exchange technology, its thermal efficiency is far higher than traditional single-cylinder dryers. It can save 30%-50% of operating energy consumption, with significant energy-saving and cost-reducing effects, suitable for long-term continuous production.
• Q4: Is the equipment prone to material blockage during operation?
  A4: The internal optimized lifting and distributing plate structure and reasonable drum inclination design ensure smooth material operation and thorough flipping. With standardized feeding operation, the blockage rate is extremely low. The whole machine operates stably without material accumulation and drying dead corners.
• Q5: What is the daily maintenance workload of the dryer?
  A5: The equipment has a reasonable and durable structural design with few vulnerable parts. Daily maintenance only needs regular cleaning of residual materials, lubrication of moving parts and inspection of wearing parts. The maintenance difficulty is low, and the comprehensive operating cost is economical.
• Q6: Can the equipment be customized and matched with existing production lines?
  A6: Absolutely. We support personalized customization of processing capacity, equipment size, fuel mode and control parameters according to users' workshop space, production capacity demand and material characteristics. It can be perfectly docked with new and old dry mortar production lines to realize integrated automatic production.
• Q7: Does the dryer cause serious dust pollution during operation?
  A7: No. The whole machine adopts closed drying operation and is equipped with professional dust removal system. It can effectively capture floating dust and flue gas, realizing low-dust and environmentally friendly production, and fully meeting industrial environmental protection emission standards.