Introduction to high-efficiency cycle energy-saving dryer

Efficient cycle energy-saving dryerIt is one of the main equipment in current mineral processing equipment, mainly used for drying granular materials within a certain humidity and particle size range, such as yellow sand used in the dry powder mortar industry, various specifications of molding sand used in the casting industry, blast furnace slag used in the building materials and cement industry, small particle clay, and small particle materials used in the chemical industry that do not undergo chemical changes, are not afraid of high temperature and smoke pollution. According to the final moisture requirements of different industries for dried materials, the moisture content of the materials dried by this equipment can reach 1-5% or below

Main features of high-efficiency and energy-saving circulating dryer:

• 1. The investment required for equipment is 1/6 of that for imported products from abroad.
• 2. Ensuring a final moisture content of less than 0.5% is the preferred product for dry mixed mortar and slag powder production lines.
• 3. The self insulation thermal efficiency of the cylinder can reach over 70% (the thermal efficiency of traditional single cylinder dryers is only 35%), increasing the thermal efficiency by 35%.
• 4. Fuel can adapt to coal, oil, and gas. Capable of drying block, granular, and powdered materials below 20mm.
• 5. Reduce land occupation by about 50% compared to a single drum dryer, lower civil engineering investment by about 50%, and reduce electricity consumption by 60%.
• 6. The final moisture content can be easily adjusted according to user requirements.
• 7. Low exhaust temperature and long usage time of dust removal equipment.
• 8. No need for gear transmission, using idler transmission.

Main technical parameters of high-efficiency cycle energy-saving dryer

Scope of application of high-efficiency cycle energy-saving dryer

Rotary high-efficiency circulating energy-saving dryerMainly used for drying granular materials within a certain humidity and particle size range. Yellow sand used in the dry powder mortar industry, various specifications of molding sand used in the casting industry, blast furnace slag used in the building materials and cement industry, small particle clay, and small particle materials used in the chemical industry that do not undergo chemical changes, are not afraid of high temperatures, and are not contaminated by smoke and dust. According to the final moisture requirements of different industries for dried materials, the moisture content of the materials dried by this equipment can reach 1-5% or below.

Working principle of high-efficiency cycle energy-saving dryer

After starting and entering a stable rotation, the rotary high-efficiency energy-saving circulating dryer enters the inner cylinder 4 of the dryer through the feeding cover 1 on the left end. The material enters the inner cylinder through the spiral guide plate at the front end of the inner cylinder, and is continuously lifted and moved longitudinally by the lifting plate through the rotation of the cylinder. The material reaches the right end of the inner cylinder and falls into the middle cylinder through the gap between the inner cylinder and the middle cylinder 3 under its own weight The material moves to the left under the action of the lifting plate in the middle cylinder until it reaches the left end of the middle cylinder. It falls into the outer cylinder through the gap between the middle cylinder and the outer cylinder 2 under its own weight. The material is folded back and moves to the right under the action of the lifting plate in the outer cylinder until it reaches the right end of the outer cylinder. Under the action of blocking the outer guide cone, it enters the discharge cover and falls into the conveying equipment that receives the material through the discharge port.

Inside the 2, 3, and 4 concentric cylinders of the dryer body, there are different numbers and angles of curved spiral lifting plates, and each cylinder end is equipped with a guide plate. The main body of the sleeve dryer is driven by four reduction motors on the transmission device 5, which respectively drive the four supporting wheels at both ends to make the two apertures 6 fixed on the cylinder body rotate at a constant speed around the center. At the same time, the wet material entering the cylinder is continuously lifted, flipped, scattered, and moves longitudinally towards the discharge end. Meanwhile, the hot air flow entering from the hot blast stove, under the negative pressure generated by the fixed induced draft fan, moves with the material and undergoes strong heat exchange with it. Due to the faster thermal conductivity of metal steel plates compared to the material being dried, the steel plates and lifting plates of the cylinder are first heated and quickly conducted to the material. The temperature of the material increases under the direct action of metal thermal conduction and hot air flow. When the temperature rises to the temperature at which water evaporates, water vapor is separated from the material and discharged into the atmosphere along with the dust after passing through the dust collector, thus achieving the purpose of material drying.

Working characteristics of high-efficiency cycle energy-saving dryer

The rotary high-efficiency circulating energy-saving dryer has the characteristics of compact structure, small footprint (half of the footprint of a single drum dryer with the same output), reliable operation, low energy consumption, high thermal efficiency, good material drying effect, easy automation control, and few operators.

The auxiliary equipment that can be equipped with a rotary high-efficiency circulating energy-saving dryer includes: electromagnetic vibration feeder or disc feeder, bucket elevator, hot blast stove, transmission system, dust removal device, vibrating screen, conveying equipment, etc. The burners supplied to the hot blast stove come in various forms such as fuel, gas, coke, coal, etc. Among them, coal is the most common, and users must indicate it when placing orders.