Operating principle
KC complex air classification flow chart
| 1- bin feeder; 2- KC dynamic air classifier; 3- multicyclone arrangement; 4- filter; 5- transportation fan; 6- aspiration fan; 7- control box / panel |
Transportation fan (5) produces rarefaction in all units of the line (classifier, cyclones) with the air inleakage (reversal cyclone) to the large product chute of the complex. Source material is moved to the classifier (2) by the feeder through the inlet chute. KC classifier separates the product into two classes on the basis of the set fineness cut point. Large product is discharged into the classifier, and the underflow is directed to the multicyclone arrangement (3, 4) for separation and further discharge. Air flow returns to the classifier from the multicyclone arrangement. A part of the air flow (30%) is discharged into the atmosphere via the exhaust pipe following its final purification in the filter (5). Final products may be discharged into plastic big bags, pneumatic chamber pumps for silo supply, etc.
KC classifier separates the product into two classes on the basis of the set fineness cut point. Large product is discharged into the classifier, and the underflow is directed to the multicyclone arrangement (3, 4) for separation and further discharge.
Air flow returns to the classifier from the multicyclone arrangement. A part of the air flow (30%) is discharged into the atmosphere via the exhaust pipe following its final purification in the filter (5). Final products may be discharged into plastic big bags, pneumatic chamber pumps for silo supply, etc.
KC classifying complex operating principle
Two-phase air stream is created inside the classifier volute (3) with the help of rotation of the acceleration rotor (5) and two inlet air flows. Source material is fed to the classifier along with the main air stream in the form of a dust air mixture through the inlet chute (1).
In a dynamic flow created by the rotor, large particles are centrifugally driven to the periphery. Having reached the internal surface of the volute (3), the particles are slowed down and lowered into the cylindrical body part circular cavity (6)
under the action of gravity, and then to the large product collector (7). After that the particles are discharged by the lock feeder.
Particles smaller than the limit fineness value in size are carried by the air flow into the rotor. The secondary air flow that enters the classifier through the joining pipe (4) prevents small particles from sticking to the walls of the volute (3) and contributes to their carry-over into the rotor.
Small particles are carried over from the classifier through the outlet connection (2) located at the top of the rotor, and then they are directed for cycloning for settling and discharge purposes.
Product separation limit fineness is controlled via the booster rotor rotational rate and the adjustment of primary and secondary flow values.
Classification characteristics
High-performance dynamic air classifiers with the patented two-phase air flow system make it possible to provide high rates of efficiency and product classification frequency on an industrial scale, which cannot be reached when using other dry classifying systems.
Materials classification fineness range in KC classifying complexes is (-500… -20) μm with the possibility of separation of the raw product into 2 classes according to an arbitrary fineness limit (-160… -15) μm.
Product classification performed by KC classifying complexes is characterized by high efficiency and final products homogeneity.
| Classifying complex operating range |
Typical classification characteristics |
 |
 |
Classification characteristics
| Raw product fineness: |
-500μm |
| Raw product permissible humidity: |
<1%
|
| Number of cut points: |
1 (classifier) + 1 (when cycloning) |
| Cut point: |
15-160 μm with the possibility of adjustment in the course of operation
|
| Productivity: |
up to 20 t/h |
| Classification efficiency: |
93-97%
|
Specifications
KC classifying complexes are the sequential technological classification system based on the modular units that are notable for high performance, good operability, low power consumption, and low spatial requirements.
Classifying complexes virtually do not require routine service maintenance, and the actual equipment use factor may reach the value of 0.9.
| 1.Model |
2.Productivity, t/h |
3.Feeding fineness, mm |
4.Ground product fineness, mm * |
5.Installed capacity, kW |
6.Dimensions, mm |
7.Weight, t |
| L |
B |
H |
КЦ-1
|
1
|
2
|
15
|
23
|
4200
|
3100
|
4200
|
9
|
KC-5
|
5
|
2
|
32
|
155
|
8460
|
5100
|
7410
|
15
|
KC-10
|
10
|
2
|
47
|
209
|
7410
|
6860
|
8240
|
19
|
KC-20
|
20
|
2
|
65
|
315
|
12100
|
7120
|
8720
|
26
|
Note:
(2) – Installed capacity index. Power consumption accounts for 40-80% of it and depends on the equipment operating modes.
(6),(7) - Weight and dimensions of the complex are given for reference only, the actual values may vary depending on the optional features and design variant or modification.
| Power consumption, kW/h |
0,75-1,2
|
| Replacement parts |
Not required |
| Wear parts |
Not required |
| Use factor |
>0,9
|
| Equipment routine inspection (with partial disassembly) |
1 per month
|
| Standard maintenance time |
No servicing idle periods |
| Maintenance personnel, number of persons |
1
|
| Product quality |
Content of impurities from adjacent classes |
| Exhaust air dust content |
0.1-0.5 g/m3 |
General description