Granular material drying solutionBrief introduction:
Granular materials generally refer to materials with good fluidity, uneasy bonding and low initial water content, such as yellow sand used in dry mortar industry, foundry industry for various specifications of molding sand, blast furnace slag, small grain clay used in building materials and cement industry, small particle material, stone, and stone, which can not be used for chemical change and not afraid of high temperature. Gray stone, stone sand, water slag, iron powder, sulphuric acid residue, iron ore powder, bentonite, fly ash, quartz sand, sand, pomegranate sand and so on. According to the requirements of the final moisture content of the material after drying, the moisture content of the material can reach 0.5-1%.System advantage:
High thermal efficiency of the system
The heat insulation material with high resistance and heat, combined with the heat utilization characteristics of the three cylinder dryer's own cylinder, has remarkable energy saving effect.
Low investment in equipment
The discharging temperature is <50 degrees, which can be directly fed into the storage without cooling device. The exhaust gas temperature is low and the dust removal equipment has a longer life.
Small area and convenient installation
Compared with the single cylinder dryer, it reduces the occupation area by about 50%, reduces the civil construction investment by 50%, and reduces the electricity consumption by 60%. The drying system is compact in layout and simple in process flow.
1. After a period of free dehydration, the sand is fed into the silo by the loader, then the feeder at the bottom of the silo is given to the conveying equipment, and then the conveyor is sent to the feed head of the dryer.
2, when the material enters the dryer, in order to minimize the mixing of cold air, the special feeder is specially used.
3, the material enters the dryer, and heat exchange is introduced from the superheated tube. The material is pushed forward repeatedly with the rotation of the dryer, and is pushed forward from the inner cylinder into the middle cylinder and then retracked, and then enters the outer cylinder and flows to the discharge head. When the material is discharged from the dryer, the special unloader is still used to lock the wind, reducing the mixing of the cold air to the maximum, improving the efficiency of the dryer, reducing the pressure burden of the fan, and reducing the dust burden in the later period.
4. After discharge from the dryer, the material can be sent to the finished goods bin or packed according to the need.
5. Through the heat exchange air, the temperature is reduced to 80-120 degrees centigrade at the discharge end, and the humidity is increased at the same time. Under the action of the rear fan, after the treatment of the first stage dust collector and the two stage dust collector, it is emptied through the chimney.
6. Control of the whole drying system can be controlled by automatic PLC. The front and rear head of the dryer is equipped with a temperature measuring device, which can link the hot air stove, feeder, air guide, and dryer of the dryer, so that the efficiency of the dryer is the best, the output reaches the maximum and the manual use reaches the least.
Pictures of dried products: