The company is a sand and gravel factory in Baoding, Hebei province, mainly engaged in sand and gravel mining, processing and sales. Due to business needs, it needs to replace a sand drying production line. After understanding our company and field investigation, they were attracted by Kolev's professional technology and fine craftsmanship and purchased a complete set of sand drying production line.

The main components of sand dryer are: conveyor, feeder, hot-blast stove, biomass burner, three cylinder dryer, discharge device, air extraction system, dust collector equipment, electric control system and so on. Detailed technological process is as follows: after the materials are put in from one end of the dryer, the materials are evenly distributed and dispersed in the dryer under the turning of the uniformly distributed copying plate in the inner cylinder, and they are in full contact with the hot air in Z-shaped reciprocating movement, which accelerates the drying heat transfer. In the drying process, the materials are moved to the dryer discharge port in a controlled manner under the action of the tilted copying plate and the hot air flow.

1: High technical content, cylinder self-insulation, high thermal efficiency. 2: Compared with the single cylinder dryer, the floor space is reduced by about 50%, the civil construction investment is reduced by about 50%, and the electricity consumption is reduced by more than 60%. 3: Low outlet temperature, long service time of dust collector equipment. 4: Frequency control is adopted to adjust the cylinder speed, and appropriate speed is adopted according to the moisture and output requirements to ensure the requirements of the next process. 5: Less basic input, the investment is only one half of the same output single cylinder dryer.