20TPH-30TPH Sand Dryer Machine Three Pass Rotary Drying Equipment

The 20-30 TPH dry mortar dryer is a heavy-duty ultra-large three-pass rotary drying equipment tailor-made for super-large-scale intelligent dry mortar production bases. As a high-end upgraded version of medium-capacity dryers, it adopts an enlarged reinforced three-layer nested rotary drum structure and full-circulation waste heat recovery drying system, specially designed for high-volume continuous drying of river sand, manufactured sand, quartz sand and fine aggregate for commercial dry mortar. This equipment efficiently processes high-humidity raw materials with initial moisture up to 20%, stably reducing the final moisture to 0.5%-1% with ultra-high thermal efficiency. It completely solves common industrial problems such as insufficient drying capacity, unstable moisture control, high energy consumption and easy material blockage of conventional medium-sized dryers. With a stable rated output of 20-30 tons per hour, it fully supports 24-hour uninterrupted heavy-load operation, perfectly matching super-large automatic batching, mixing, packaging and palletizing full-line production. It is the core front-end drying equipment for standardized, high-efficiency and energy-saving large-scale dry mortar industrial parks.

• Ultra-Large Capacity & Heavy-Duty Continuous Operation: Adopts fully enlarged and optimized three-pass drum structure and enhanced heat exchange system, achieving a stable hourly output of 20-30 tons. It completely breaks the capacity limit of 15-20TPH dryers, fully adapting to long-term high-intensity continuous production of super-large dry mortar production lines and meeting ultra-large batch order production demands.
• Superior Energy-Saving & Ultra-High Thermal Efficiency: Equipped with upgraded multi-layer lifting plate structure and full closed waste heat recovery circulation system, the comprehensive thermal efficiency reaches over 90%. Compared with traditional single-cylinder and conventional three-pass dryers, it reduces unit energy consumption by 50%-65%, greatly lowering long-term fuel and power consumption costs for mass production with remarkable energy-saving benefits.
• Ultra-Stable High-Precision Moisture Control: Matched with industrial-grade intelligent PLC constant temperature control and high-precision frequency conversion speed regulation system. It dynamically adjusts drum rotating speed, feeding volume and hot air circulation volume in real time according to raw material humidity, particle size and feeding fluctuation. The finished material moisture is stably locked at 0.5%-1%, ensuring zero batch difference of mortar raw materials and consistent finished product quality.
• Reinforced Wear-Resistant & Anti-Corrosion Structure: The inner drum and lifting plates adopt thickened high-manganese alloy wear-resistant steel, with 2 times higher abrasion resistance than ordinary upgraded models. The whole machine adopts integral high-temperature anti-corrosion spraying and full welding reinforcement technology, resisting long-term high-temperature scouring and strong sand abrasion, with ultra-long service life and extremely low failure rate.
• Multi-Scenario Heat Source Adaptation & Green Environmental Protection: Widely compatible with multiple heat sources including natural gas, diesel oil, biomass, coal and electric heating, supporting flexible switching according to factory energy conditions and environmental protection policies. Equipped with large-caliber reserved dust removal interface, supporting matching pulse dust removal equipment to realize zero dust overflow, fully meeting national industrial environmental protection emission standards.
• Full Intelligent Unmanned Operation & Strong Versatility: Integrated humanized touch screen intelligent control system, realizing one-key start-stop, automatic constant temperature operation, real-time fault self-diagnosis and production data statistics. It supports stable drying of various mortar raw materials with particle size below 25mm, covering all dry mortar formula aggregates, with strong adaptability to diversified production formulas.

• Comprehensive Pre-Startup Inspection: Conduct full inspection on the rotary drum, support rollers, transmission system, sealing components and heat source pipeline before startup. Strictly check the operating status of temperature control system, frequency conversion system and dust removal equipment. It is forbidden to start the machine with faults or run overload to avoid mechanical damage and production safety accidents.
• Standard Preheating & Feeding Management: Perform 15-25 minutes constant-temperature preheating to balance internal heat before formal feeding, ensuring uniform drying foundation. Prohibit instantaneous large-volume feeding and mixing of metal sundries, oversized stones and hard impurities to prevent drum blockage, transmission overload and abnormal equipment wear.
• Strict High-Temperature Safety Protection: The equipment operates under long-term high-temperature and high-load conditions. It is strictly prohibited to touch the drum shell, combustion chamber and hot air pipeline during operation to prevent scalding. Keep the workshop well ventilated, stay away from flammable and explosive materials, and standardize heat source operation procedures to eliminate fire hazards.
• Professional Parameter Adjustment Specification: Only professional and trained technicians are allowed to adjust drying temperature, drum speed and feeding parameters. Unauthorized modification of operating parameters is forbidden to avoid material over-drying, insufficient dehumidification, equipment overheating alarm and system disorder faults.
• Scientific Daily Maintenance & Cleaning: Thoroughly clean residual caked materials and internal dust after daily shutdown to prevent accumulated materials from affecting heat exchange efficiency and drying uniformity. Regularly lubricate transmission components, inspect wear of lining plates and lifting plates, and replace aging sealing strips and vulnerable parts in a timely manner.
• Standard Shutdown & Emergency Handling: Stop feeding first before shutdown, keep the drum running until all internal materials are completely discharged, then turn off the heat source and cut off power supply. In case of abnormal noise, high-temperature alarm, material blockage or system failure, stop feeding immediately, cool down the equipment gradually and troubleshoot completely before restarting production.

The 20-30 TPH dry mortar dryer is exclusively developed for super-large dry mortar industrial bases and high-yield building material raw material processing plants. It is the core front-end supporting equipment for large-scale full-automatic dry mortar production lines, widely suitable for raw material drying of tile adhesive, interior and exterior wall putty powder, waterproof mortar, thermal insulation mortar, self-leveling mortar, masonry plastering mortar, repair mortar and other high-standard dry mortar products. It perfectly matches large-capacity batching and mixing systems and multi-station full-automatic packaging and palletizing lines, fully adapting to 24-hour uninterrupted super-large batch industrial production. It is the preferred drying equipment for intelligent upgrading and high-efficiency production of large dry mortar enterprises.

Q1: What is the maximum adaptable raw material moisture?
A1: This heavy-duty upgraded model supports ultra-high humidity raw sand with initial moisture up to 20%, which can handle wetter raw materials than conventional dryers. It stably controls finished material moisture within 0.5%-1%, fully meeting the highest production standards of commercial dry mortar.

Q2: What are the core advantages compared with 15-20TPH dryer?
A2: It features larger processing capacity, higher thermal efficiency, upgraded reinforced wear-resistant structure and stronger overload resistance. It solves the output bottleneck of medium-capacity dryers in super-large production lines, with lower unit energy consumption, more stable long-term heavy-load operation and higher comprehensive cost performance.

Q3: How to avoid uneven drying of mass materials?
A3: Uneven drying is mainly caused by insufficient preheating, unstable heat source temperature, excessive instantaneous feeding or blocked internal lifting plates. Extend preheating time properly, maintain uniform feeding volume, and clean internal sundries regularly to ensure consistent drying effect of batch materials.

Q4: Does it support multi-heat source flexible switching?
A4: Yes. The equipment is universally compatible with natural gas, diesel, biomass, coal and electric heating. Users can flexibly select and switch heat sources according to factory environmental protection requirements, energy cost and on-site actual conditions.

Q5: Is the equipment operation difficult for new workers?
A5: It adopts industrial-grade PLC intelligent touch screen control with preset professional drying recipes. It realizes automatic constant temperature operation and real-time fault self-detection. Operators can master daily operation and simple maintenance skills after short-term training.

Q6: Why is the three-pass structure more energy-saving and efficient?
A6: The optimized nested three-pass structure greatly extends the heat exchange stroke and contact time between materials and hot air, with higher heat utilization rate and more uniform drying. It avoids the defects of low thermal efficiency, high energy consumption and large floor space of traditional single-cylinder dryers.

Q7: Can it support long-term 24-hour super-high load production?
A7: Absolutely. The whole machine adopts heavy-duty industrial design with upgraded wear-resistant and high-temperature resistant structure. It can stably maintain 20-30TPH ultra-high output for 24-hour uninterrupted operation, fully adapting to super-large batch intensive production modes of large mortar industrial parks.