rotary drying equipment

Rotary drying equipment is a professional and high-efficiency industrial drying solution tailor-made for dry mortar production lines. It is primarily designed for continuous dehydration and drying of river sand, manufactured sand, quartz sand and other fine mortar aggregates. In dry mortar manufacturing, high-moisture sand easily causes material agglomeration, uneven batching, poor mixing performance and unstable finished mortar strength. Adopting advanced three-pass rotary drying structure and counter-current hot air circulation technology, this equipment achieves full heat exchange between materials and hot airflow. It steadily processes wet sand with 15%–20% initial moisture content and reduces the final moisture to ≤0.5%, fully complying with strict raw material standards for high-quality dry mortar production. Featuring high thermal efficiency, stable continuous operation and eco-friendly design, it serves as indispensable front-end core equipment for standardized, large-scale and intelligent dry mortar factories.

• Three-Pass Rotary Structure, Uniform & Thorough Drying

  Equipped with inner, middle and outer three-layer nested rotary cylinders, the equipment extends material heat exchange time effectively. Sand materials form a uniform floating material curtain inside the drum, achieving full contact with hot air without dead drying zones. It completely eliminates wet cores, uneven moisture and material caking defects common in traditional single-cylinder dryers, ensuring consistent drying quality.

• High Thermal Efficiency & Remarkable Energy Saving

  Built with an integral thermal insulation layer and waste heat recovery system to minimize heat loss. The comprehensive thermal efficiency reaches over 80%, reducing overall energy consumption by more than 30% compared with conventional drying equipment. It effectively cuts long-term fuel and power operating costs for mortar production enterprises.

• Heavy-Duty Wear-Resistant & Durable Design

  The cylinder adopts thickened high-strength steel plates, while internal lifting plates are made of high-performance wear-resistant materials. The whole structure resists long-term impact, friction and abrasion from high-hardness sand aggregates, featuring low deformation rate, low failure rate and long service life, perfectly adapting to 24-hour high-intensity industrial continuous production.

• Closed Negative Pressure Dust Removal, Green & Clean Production

  The full-closed operating structure matches a professional pulse bag dust removal system. Negative pressure dust suction effectively prevents dust overflow during the drying process, improves workshop working conditions, reduces raw material waste, and fully meets international environmental protection emission standards for building material production.

• Stable Operation & Low Maintenance Cost

  Optimized transmission and support roller structure ensures stable rotation, low vibration and low noise. The mature and simplified mechanical structure avoids frequent material blockage, supporting long-term stable operation of large-scale dry mortar production lines and reducing daily maintenance frequency and cost.

• Strong Compatibility & Seamless Line Matching

  It supports multiple flexible heat source options including natural gas, diesel, biomass and coal-fired hot blast stoves. The equipment can be perfectly connected with upstream screening and batching systems and downstream mixing and packaging equipment to form a fully automatic closed-loop dry mortar production line.

• Pre-Operation Inspection

  Before startup, inspect the tightness of all connecting components, wear condition of internal lifting plates, operating status of motors and reducers, and the patency of hot air and dust removal pipelines. Never start the equipment with faulty parts or blocked pipelines to avoid mechanical damage.

• Standardized Feeding Management

  Maintain continuous and uniform feeding speed during operation. Overfeeding will cause internal material accumulation and blockage, while intermittent feeding leads to unstable temperature and uneven drying effect. Remove oversized hard impurities in advance to prevent cylinder abrasion and equipment jamming.

• Reasonable Parameter & Temperature Control

  Adjust drying temperature and cylinder rotation speed according to the actual moisture of raw sand materials. Prolonged ultra-high temperature operation is prohibited to prevent cylinder deformation and material scorching. Monitor finished sand moisture in real time to ensure stable product quality.

• Safety Operation Specifications

  It is strictly forbidden to touch rotating components and high-temperature pipelines during equipment operation. All maintenance, cleaning and fault troubleshooting work must be carried out after complete power cut to ensure personal and equipment safety.

• Daily Maintenance & Cleaning

  Clean residual sand and dust inside the cylinder and dust removal system after daily shutdown. Regularly lubricate transmission bearings and reducers, and inspect and replace worn parts timely to guarantee long-term stable equipment operation.

• Timely Fault Troubleshooting

  Immediately stop the equipment once abnormal noise, sudden temperature surge, material blockage or air leakage occurs. Conduct thorough inspection and troubleshooting before restarting. Operating the equipment with hidden faults is strictly prohibited.

• Dry Mortar Production Industry

  Professional aggregate drying equipment for full-range dry mortar production lines, including masonry mortar, plastering mortar, bonding mortar, waterproof mortar, thermal insulation mortar and anti-crack mortar.

• Sand Washing & Aggregate Processing Plants

  Suitable for deep dehydration and drying of washed wet sand, providing high-quality dry sand aggregates for building material processing and finished sand sales.

• General Building Materials Manufacturing

  Ideal for drying quartz sand, manufactured sand and other granular raw materials for putty powder, ceramic adhesives and various powder building materials.

• New Material & Refractory Industry

  Used for pretreatment drying of granular raw materials for thermal insulation materials, refractory powder and inorganic new building materials.

• Infrastructure & Municipal Engineering

  Supporting specialized aggregate drying for large-scale municipal construction, road engineering and industrial building mortar supporting projects.

• Q1: What materials can this rotary drying equipment process?

  A1: It is specially designed for granular building materials, mainly including river sand, manufactured sand and quartz sand. It meets the aggregate drying demands of all conventional and functional dry mortar products.

• Q2: What is the final moisture standard after drying?

  A2: The equipment can stably process wet sand with 15%–20% initial moisture and control the final moisture content below 0.5%, fully meeting the strict raw material standards for industrial dry mortar production.

• Q3: What causes unstable drying effect?

  A3: Unstable drying quality is mainly caused by uneven feeding speed, blocked hot air pipelines, damaged lifting plates or unreasonable temperature parameters. Regular equipment inspection and parameter calibration can effectively solve this problem.

• Q4: Does the equipment support multiple heat sources?

  A4: Yes. It is highly adaptable to various heat sources including natural gas, diesel, biomass and coal, allowing customers to select the optimal heating mode based on local energy conditions and environmental policies.

• Q5: Is the equipment environmentally friendly?

  A5: Absolutely. Adopting full-closed negative pressure dust removal design, the equipment realizes zero dust overflow during operation, complying with international environmental protection standards and achieving clean and green production.

• Q6: Can the production capacity be customized?

  A6: Yes. We provide customized models with hourly output ranging from 3t/h to 30t/h. Equipment structure, size and operating parameters can be adjusted according to customers’ site conditions and production scale.

• Q7: How to reduce equipment energy consumption effectively?

  A7: Maintain stable and uniform feeding volume, set scientific and reasonable drying temperature according to material moisture, and regularly clean dust and blockages in the heat exchange system. These operations maximize thermal efficiency and effectively reduce comprehensive operating energy consumption.