Sand dryer work Principle:
Sand from the belt conveyor or bucket elevator to the hopper, then through the hopper of the feeder pipe by feeding into the feeding end.Feeding pipe slope is greater than the natural inclination of the material, in order to smooth the material into the dryer sand (yellow sand dryer) inside.Dryer cylinder is tilted slightly into the horizontal rotating cylinder.Material from the higher end of the joined body heat from the low-end entry into countercurrent contact with the material, but also body heat and material together and flow into the cylinder.With the rotating cylinder by gravity material than the end of the run to the end.Wet material in the cylinder body to move forward the process, either directly or indirectly, the body heat of heat transfer, the wet material to dry, then the discharge end by the belt or screw conveyor sent.Dryer in the sand (yellow sand dryer) cylinder wall with the body copy board, its role is to copy the material up and planted to make contact with the surface of materials and increases air flow to improve drying rate and to promote material progress .Heat carrier is generally divided into hot air, flue gas.After the heat-carrier through the dryer, the general need within the gas cyclone trap material brought down.To further reduce exhaust gas dust content, but also through bag filters or wet dust collector and then put emissions.
Slime dryer composition:
Coal slime dryer system are heat systems, feed systems, conveyor systems, drying systems, dust removal system, electrical control system.
Coal and slime Dryer Application
Coal slime dyer is a new type of drying machine, which is designed on the base of roller dryer. It is widely used in:
1.Coal industry to dry coal slime, raw coal, cleaned coal by flotation and other materials;
2.Construction industry to dry blast furnace slag, clay, limestone, sand, quartz and other materials;
1.Coal industry to dry coal slime, raw coal, cleaned coal by flotation and other materials;
2.Construction industry to dry blast furnace slag, clay, limestone, sand, quartz and other materials;
3.Mineral processing industry to dry various metallic headings, slag, tailings and other materials;
4.Chemical industry to dry substance with little heat sensitivity.
4.Chemical industry to dry substance with little heat sensitivity.
Characteristics of coal slime dryer:
1.Supper overload capacity, large handling capacity, low fuel consumption and low drying cost;
2. Adopts down-flow drying method; gas and wet materials will enter into the dryer from the same side and extremely high evaporation intensity can be achieved because of high-temperature gas; low outlet temperature and high thermal efficiency.
3. Operation parameters can be changed according to different properties of different materials, which will make sure fully heat exchange of material and hot air;
4. New type of feeding device and discharging device put an end to such material feeding problems as blocking, discontinuous feeding, uneven feeding and back feeding. Moreover, they will also lessen the load of dust collection system;
5. New internal structure has intensified cleaning effect and heat conduction of distributed materials, solved the problem of residue on inside dryer and had better adaptability to material moisture and stickiness;
6. Zero horizontal thrust has greatly decreased the wear of drag roller and the machine has achieved stable and reliable operation;
7. Aligning riding wheel device is adopted by the machine, which has greatly decreased the wear and power loss;
8. Granularity and moisture of product can be controlled at users request: moisture of coal slime after drying can be controlled to not more than 8% and granularity not more than 8mm.
2. Adopts down-flow drying method; gas and wet materials will enter into the dryer from the same side and extremely high evaporation intensity can be achieved because of high-temperature gas; low outlet temperature and high thermal efficiency.
3. Operation parameters can be changed according to different properties of different materials, which will make sure fully heat exchange of material and hot air;
4. New type of feeding device and discharging device put an end to such material feeding problems as blocking, discontinuous feeding, uneven feeding and back feeding. Moreover, they will also lessen the load of dust collection system;
5. New internal structure has intensified cleaning effect and heat conduction of distributed materials, solved the problem of residue on inside dryer and had better adaptability to material moisture and stickiness;
6. Zero horizontal thrust has greatly decreased the wear of drag roller and the machine has achieved stable and reliable operation;
7. Aligning riding wheel device is adopted by the machine, which has greatly decreased the wear and power loss;
8. Granularity and moisture of product can be controlled at users request: moisture of coal slime after drying can be controlled to not more than 8% and granularity not more than 8mm.