Closed joint-stock company “Ural-Omega”
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Classifying Complexes KC

Complexes for dry air high-precision classification of fine and dust products of -200 μm classes based on the dynamic air material separation principle.

General information

KC classifying complexes are designed for classification of fine powders and materials according to their fineness or density (provided that the particles are uniform-sized).

KC complexes make it possible to produce two narrow classes of fine powders within the fineness range of 0-500 μm with the cut point at 70 to 15 μm. KC complex productivity is 1 to 20 t/h.

KC complexes are characterized by the highly efficient dry method of classification without the use of any mechanical screen sizing systems. The classification process is based entirely on air flows and particle acceleration, which represent the dynamic air classification principle: segregation of particles takes place on the basis of their ability to reduce the set speed on interaction with the aerodynamic flow.

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.

Fields of application

Ultra-fine materials production:

KC сlassifying complexes can be used in any branches of industry, where the narrow class products output (separation) is required, including:

  • high-grade cement production;
  • pigment production;
  • filler production, etc.

Roughing:

Enable separation of fine class particles according to their density. Efficiently applied in the processes of beneficiation / roughing of the following ores and materials by dry method:

  • industrial cinders;
  • slags;
  • ore placer accumulations, etc.
KC classifiers are used as an additional module of KI grinding complexes, which allows the separation of ultra-thin classes of the ground products, such as: micro calcite, graphite, etc.

 

Advantages

KC classification complex is a complete complex solution that requires no additional systems.

Operation:

  • contains no wear parts;
  • low metal and power consumption;
  • contains no mechanical impact mechanisms, produces no vibration when operating;
  • low maintenance time, long servicing intervals;
  • low noise characteristics;
  • lubrication-free;
  • low dust emission level.

 

Technological advantages:

  • efficient separation of the materials rich in ultra-fine dust fractions content;
  • high accuracy of separation (90-95%);
  • wide cut-point range;
  • smooth stepless cut-point adjustment;
  • possibility of cut-point adjustment in the course of operation.

Operating principle

KC complex air classification flow chart

Технологическая схема классифицирующего комплекса КЦ

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)Центробежный классификатор КЦ - схема работы 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
Implemented projects
More than 267 mplemented projects for more than 200 clients
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