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Fly Ash Sorting Series

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Special sorting machine for fly ash
YF high-efficiency vortex fly ash sorting machine is a new type of high-efficiency classifying equipment developed on the basis of our company's introduction of exquisite technology, which has been successfully developed through digestion, absorption, and independent innovation. Its classifying efficiency is high and the material-gas ratio reaches 2.0 ~ 2.5Kg / m3. Compared with current turbine classifiers, dry air has the following outstanding advantages:
1. The turbine classifier has a side wall effect: the current turbine classifier is only equivalent to adding a rotating turbine device in the middle of the cyclone. The dust-containing gas mixed with coal ash enters the cyclone tangentially, which results in high-speed rotation. The particles are thrown down to the wall under the action of centrifugal force. At the same time, due to the effect of the side wall effect, the fine ash close to the cylinder wall is also thrown into the coarse ash and mixed into the coarse ash under the action of centrifugal force, causing the fine ash separation to be unclean.
2. There is a speed gradient in the rotation of the airflow: because the classification area is an annular area between the outer edge of the turbine and the cylinder wall, the airflow enters from only one tangential air inlet, so the gas velocity is higher in the air inlet area, and the air flow is far away from the air inlet. The lower velocity results in an unstable flow field in the annular classification zone, which affects the classification efficiency.
3. Cannot form a plane vortex: The turbine of the current turbine classifier is only a simple straight cage rotor, without horizontal partitions, and the classifying blades are also made of flat steel, so that the rotating airflow formed is not a plane vortex, but a spiral. Air flow, and the speed of the gas sucked into the upper part of the cage is faster, while the speed of the air sucked into the lower part is slower, which affects the classification efficiency.
4. The coarse ash cannot be cleaned effectively. The current turbine classifier has a tangentially-entered secondary air in the lower part of the classifying cylinder to clean the coarse ash. If the secondary air speed is high, it is easy to remove the coarse ash. A large amount of falling coarse ash is raised, thereby classifying the material in the upper part of the anti-interference grading area. If the wind speed is low, the coarse ash cannot be cleaned.
The YF fly ash special sorting machine completely overcomes these shortcomings of the turbine classifier, and its special advantages are:
1.The designed straight-cage rotor is a cage-shaped rotor composed of a multi-layered horizontal partition and vertical special-shaped grading blades. The horizontal partition makes the airflow in the classification area form a stable horizontal vortex. The special-shaped grading blades make it enter the cage from the surface of the cage. The internal classified airflow maintains the same flow velocity at any point, and the relative speed difference is <5%. Therefore, the flow field in the classified area is uniform and stable, so the classification accuracy is very high.
2. Several guide vanes with "concave" -shaped grooves are evenly arranged in the middle part between the cage rotor and the outer casing, and the dust-containing gas must be tangent from several gaps of about 15 mm between the guide vanes. Into the annular classification space composed of the guide blade and the cage rotor, the existence of the guide blade completely eliminates the side wall effect, the content of fine ash in the coarse ash is greatly reduced, and the classification efficiency is greatly improved.
3. The coarse ash falling into the coarse ash bucket is flushed by the lower updraft, and the fine ash in the coarse ash is brought into the classification area again for classification.
4. Because the flow field is uniform and stable, and the rotation speed of the air flow is high, the centrifugal force and the centripetal suction force of the air flow are strong, so the classification accuracy is very high, and the material-gas ratio can reach 2.0 to 2.5, which is higher than the material-gas ratio of the turbine classifier. (0.7 ~ 1.0) is 2 to 3 times higher. The air volume used for classification is only half that of the turbo classifier. Therefore, the energy consumption of the system is greatly reduced. The energy consumption of a classification system with a processing capacity of 60T / H is only 120KW, and the processing capacity is up to The 40T / H classification system consumes only 100KW.
Technical parameters :
model Grade I gray (45um <12%) Air volume (m3 / h) Speed (rpm) Motor power (kw) **** Processing capacity (t / h) Output (t / h)
YF-250 10-12 10000 300-500 15 30 6-12
YF-350 10-12 15000 300-500 18.5 45 10-20
YF-500 10-12 21000 260-450 twenty two 60 15-25
YF-750 10-12 30000 260-450 30 75 20-30
YF-1000 10-12 45000 240-420 37 100 30-45
YF-1250 10-12 60000 240-420 45 140 40-55
YF-1500 10-12 75000 220-400 55 190 50-70
YF-2000 10-12 90000 220-400 75 250 65-90
YF-2500 10-12 10500 200-380 90 320 90-130
Note: According to user requirements, the actual configuration may differ slightly from the configuration in the table.

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