KX Rotor Classifier for Stone-Powder Control

The High-Fineness Rotor Type Powder Separator (specialized for artificial sand) is an improved external-circulation rotor-type powder separator developed by the company after years of research and development. It is based on the rotor-type powder separator and applies the planar vortex theory to the design of a cyclone-type powder separator. Practical use has proven that it achieves a grading efficiency of over 85%, and its fineness adjustment is convenient, flexible, and reliable. This equipment is specifically designed for separating excess stone powder in the dry process of manufactured sand production, allowing for very easy control of stone powder content in manufactured sand to meet different user requirements. Why choose the High-Fineness Rotor Type Powder Separator? First, it has high grading efficiency. Practical use has proven that it achieves over 85% efficiency, effectively separating excess stone powder from manufactured sand. Second, it offers convenient and flexible fineness adjustment. By adjusting the rotor speed or air volume, the fineness modulus and stone powder content of the finished sand can be flexibly controlled to meet different user requirements. Third, it is reliable. Combining planar vortex theory with cyclone-type powder separator design ensures stable operation with a low failure rate. Fourth, it is specially designed for artificial sand and is an ideal device for stone powder separation in the dry process of manufactured sand production. The High-Fineness Rotor Type Powder Separator is mainly used in the stone powder separation stage of the dry process for manufactured sand production, in controlling the fineness modulus of manufactured sand in sand and gravel aggregate production lines, in quality control of manufactured sand for concrete batching plants and dry-mixed mortar production lines, and in various dry artificial sand production lines that require strict control over stone powder content. Potential users of the High-Fineness Rotor Type Powder Separator include manufactured sand production enterprises, sand and gravel plants and aggregate producers, concrete batching plant operation teams, dry-mixed mortar production companies, cement product factories, crushing and sand-making production line EPC contractors, equipment distributors and stockists, and buyers of overseas infrastructure and building materials projects. When should you choose or replace a High-Fineness Rotor Type Powder Separator? - When the stone powder content in the dry process of manufactured sand production exceeds the standard and stone powder separation is required; - When the fineness modulus of the finished sand fluctuates greatly and flexible adjustment of the fineness modulus is needed; - When strict environmental protection requirements necessitate supporting dust removal equipment for clean production; - When old grading equipment is inefficient, difficult to adjust fineness, or has a high failure rate and needs upgrading; - When a new manufactured sand production line needs to be equipped with efficient powder grading equipment. How to choose a High-Fineness Rotor Type Powder Separator? Step 1: Confirm processing capacity, and select the corresponding model according to production line capacity requirements; Step 2: Confirm powder selection efficiency to ensure it reaches over 85%; Step 3: Confirm fineness adjustment method and choose a model that can control product fineness by adjusting rotor speed or air volume; Step 4: Confirm the matching dust collector, as high-fineness rotor-type powder selectors usually need to work with pulse single-bag dust collectors to ensure dust removal effectiveness; Step 5: Confirm installation foundation, which should be installed on a solid concrete foundation and fixed with anchor bolts; Step 6: Confirm the material of wear parts and select high manganese steel or wear-resistant alloy rotors and liners according to the abrasiveness of the material; Step 7: Confirm environmental protection and automation configuration, which can be equipped with a dust removal system and centralized control system; Step 8: Confirm output voltage and operating conditions.

High-Fineness Rotor-Type Powder Selector Model and Parameter Table (Example)

Model	Processing Capacity (t/h)	Powder Selection Efficiency (%)	Rotor Speed (r/min)	Motor Power (kW)	Air Volume (m³/h)	Overall Dimensions (mm)

General Technical Parameter Table

Parameter	Specification
Type	High-Fineness Rotor-Type Powder Selector (Specially for Artificial Sand)
Structural Form	External Circulation Type with Improved Rotor
Theoretical Basis	Plane Vortex Theory + Cyclone Powder Selector Design
Powder Selection Efficiency	≥85%
Fineness Adjustment	Convenient and flexible, can be achieved by adjusting rotor speed or air volume
Core Function	Separation of excessive stone powder in the dry manufacturing process of manufactured sand, controlling the stone powder content
Applicable Scenarios	Dry manufacturing process of manufactured sand, sand and gravel aggregate production, concrete mixing stations, dry-mixed mortar

Dimensional drawing and key dimensions: `[Image: /images/kx-super-fine-rotor-classifier-dimension-drawing.webp]`

Material Table

Component	Standard Material	Optional Material	Description
Frame/Housing	High-strength Carbon Steel	Stainless Steel, Wear-resistant Steel Plate	Supports the weight of the equipment and operational load
Rotor/Blades	High Manganese Steel, Wear-resistant Alloy	Stainless Steel, Ceramic Composite	Core wear-prone part, highly wear-resistant
Liner	High Manganese Steel (ZGMn13)	High Chromium Cast Iron	Protects the housing, extends service life
Drive Shaft	40Cr/45# Steel	Alloy Steel	Quenched and tempered, smooth transmission
Bearing	Self-aligning Roller Bearing	Double-row Cylindrical Roller Bearing	Supports heavy load and impact
Motor	Full Copper Coil Motor	Explosion-proof Motor	Standard Three-phase Asynchronous Motor
Control Box	Carbon Steel/Stainless Steel	Rainproof and Dustproof Type	Optional Variable Frequency Speed Control

Installation Method: The high-fineness rotor-type powder classifier must be installed on a solid concrete foundation, which should bear the equipment's own weight and dynamic loads during operation; during installation, it is necessary to ensure that the foundation level meets the requirements, and the anchor bolts should be tightened according to the torque specifications; after the equipment is in place, the level should be adjusted to ensure that the rotor is parallel to the motor shaft; a belt or direct coupling is used between the motor and the rotor, and the belt tension or alignment accuracy should be adjusted to ensure smooth transmission; the feed inlet, powder discharge outlet, air inlets 1 and 2, and discharge outlet should be correctly connected to the pipelines according to process requirements; the supporting pulse single-unit bag dust collector should be installed in an appropriate location, ensuring that the dust removal pipeline connections are sealed properly; after installation, a no-load test run should be conducted to check whether the rotor rotates smoothly and whether there is any abnormal vibration or noise; during load test operation, the feeding amount should be gradually increased while observing the powder classification effect and motor current to ensure it does not exceed the rated current; a dust removal system should be installed to reduce dust pollution; a central control system can be installed to achieve online monitoring and automatic control.

Application Scenario Table

Industry	Application	Recommended Configuration	Key Requirements
Manufactured Sand Production	Dry separation of manufactured sand and stone powder, fineness modulus control	KX-500–KX-1200	Powder classification efficiency ≥ 85%, flexible fineness adjustment
Sand and Gravel Plant	Aggregate production line stone powder control	KX-500–KX-1000	Control stone powder content, ensure reasonable grading
Concrete Mixing Plant	Manufactured sand quality control	KX-500–KX-800	Stable fineness modulus, meet concrete requirements
Dry-mixed Mortar	Raw material manufactured sand fineness control	KX-500–KX-1000	Controllable stone powder content, reasonable grading
Cement Product Factory	Manufactured sand preparation	KX-800–KX-1200	Large capacity, stable operation
Environmental Protection Projects	Dust purification and recovery	Supporting pulse single-unit bag dust collector	High dust removal efficiency, emission standard compliance

Note: The high-fineness rotor-type powder separator is specially designed for separating excessive stone powder in the dry production process of manufactured sand. The powder separation efficiency exceeds 85%, and the fineness adjustment is convenient and flexible. The equipment usually needs to be used in conjunction with a pulse single-machine bag dust collector. The dust collector adopts advanced online pulse-jet technology, achieving thorough ash removal, low operating resistance, high dust removal efficiency, long filter bag life, low maintenance, and safe and reliable operation. It is the preferred dust removal equipment for dispersed dust at the top and bottom of the machine and can be widely applied to dust purification in various crushing and screening equipment. For explosive environments, an explosion-proof motor should be selected. For highly abrasive materials, high manganese steel or wear-resistant alloy rotors and liners are recommended.

Selection Notes (compared with non-powered powder separators): The core differences between the high-fineness rotor-type powder separator and the non-powered powder separator lie inthe powder separation principle, adjustment method, and applicable scenarios.The high-fineness rotor-type powder separator uses an external circulation rotor structure and applies planar vortex theory in the design of a cyclone-type powder separator, achieving a separation efficiency of over 85%, with convenient and flexible fineness adjustment. It is specifically used for separating excessive stone powder in the dry production process of manufactured sand. The non-powered powder separator adopts a separation method combined with a pulse dust collector, which can control the powder content in the sand, ensuring the sand's grading, thereby guaranteeing the sand's qualification rate. During selection, for dry-production lines of manufactured sand that require high separation efficiency and fineness adjustment, the high-fineness rotor-type powder separator is preferred; for scenarios sensitive to equipment power consumption and investment costs, the non-powered powder separator can be considered. Both can be paired with a pulse single-machine bag dust collector to achieve clean production.

## Technical FAQ

1. What is a high-fineness rotor-type powder separator?

The high-fineness rotor-type powder separator (special for artificial sand) is an improved powder separator with an external circulation rotor, developed by the company after years of research. It is based on the rotor-type powder separator and applies planar vortex theory in the design of a cyclone-type powder separator. It is specifically used for separating excessive stone powder in the dry production process of manufactured sand.

2. What is the powder separation efficiency of the high-fineness rotor-type powder separator?

Practical use has proven that the separation efficiency exceeds 85%.

3. What is the working principle of the high-fineness rotor-type powder separator?

It applies planar vortex theory in the design of a cyclone-type powder separator. Through an external circulation rotor structure, it uses the centrifugal force generated by the rotor's rotation and airflow to effectively separate fine powder (stone powder) from coarse sand in manufactured sand.

4. How to adjust the fineness of a high-fineness rotor type powder separator?

The fineness adjustment is convenient and flexible, which can be achieved by adjusting the rotor speed or air volume, thereby controlling the fineness modulus and stone powder content in the finished sand.

5. In what scenarios is a high-fineness rotor type powder separator applicable?

It is specifically used for separating excess stone powder in the dry production process of manufactured sand, making it very convenient to control the stone powder content in the sand to meet different user requirements.

6. What are the main features of the high-fineness rotor type powder separator?

It has high powder selection efficiency (≥85%), convenient and flexible fineness adjustment, reliable performance, making it an ideal equipment for stone powder separation in the dry production process of manufactured sand.

7. Does the high-fineness rotor type powder separator need to be equipped with a dust collector?

It usually needs to be used with a pulse single-machine bag dust collector. This dust collector uses advanced online pulse jet technology, with high dust removal efficiency, long filter bag life, low maintenance workload, safe and reliable operation, and can be widely used for dust purification in various crushing and screening equipment.

8. What are the features of a pulse single-machine bag dust collector?

The dust collector uses advanced online pulse jet technology, achieving thorough cleaning, low operating resistance, high dust removal efficiency, long filter bag life, low maintenance workload, safe and reliable operation, and is the preferred dust collector for dispersed dust at the top and bottom of machines.

9. What is a non-powered powder separator?

A non-powered powder separator uses a powder selection method combined with a pulse dust collector, which can control the powder content in the sand, ensuring the gradation of the sand and thus the sand qualification rate.

10. What is the difference between a high-fineness rotor type powder separator and a non-powered powder separator?

The high-fineness rotor type powder separator uses an external circulation structure with a rotor, achieving a powder selection efficiency of over 85%, with convenient and flexible fineness adjustment; the non-powered powder separator uses a powder selection method combined with a pulse dust collector, which can control the sand powder content and ensure sand gradation.

11. What are the wear parts of a high-fineness rotor type powder separator?

Rotor, blades, liner, bearings, etc., among which the rotor and blades are the core wear parts. It is recommended to use high manganese steel or wear-resistant alloy materials.

12. Does a high-fineness rotor type powder separator require a foundation?

Required. Should be installed on a solid concrete foundation, which must bear the equipment’s own weight and dynamic load during operation, and be fixed with anchor bolts.

13. What are the common faults of a high-fineness rotor-type powder separator?

Rotor wear (high material abrasiveness), bearing overheating (poor lubrication or overload), fineness adjustment malfunction (rotor speed or air volume adjustment mechanism failure), abnormal vibration (rotor imbalance or foreign object blockage), outlet clogging (uneven feeding or outlet too small).

14. Can the high-fineness rotor-type powder separator be used in the mining industry?

Yes, it is suitable for dry production of manufactured sand in the mining industry, effectively controlling the stone powder content in manufactured sand and meeting high-standard building sand requirements.

15. Can the high-fineness rotor-type powder separator be customized?

Yes, motor power, rotor material (high manganese steel/stainless steel/wear-resistant alloy), motor configuration (explosion-proof motor), dust removal system, central control system, and variable frequency speed regulation can be customized.

16. How to maintain a high-fineness rotor-type powder separator?

Regularly check rotor and blade wear, replace or adjust in time; regularly check liner wear; regularly check bearing lubrication, replenish or replace grease; regularly check belt tension; regularly check if anchor bolts and connecting bolts are loose; regularly clean the inside of the powder separator and dust collector of accumulated material and debris.

17. How should the inlet and outlet of the high-fineness rotor-type powder separator be connected?

The equipment is equipped with an inlet, powder outlet, air inlet 1, air inlet 2, and outlet. Pipelines must be connected correctly according to process requirements to ensure smooth feeding, good powder separation, and unobstructed discharge.

18. Does the high-fineness rotor-type powder separator comply with RoHS and REACH?

The standard equipment meets RoHS and REACH regulations and does not contain SVHC substances of very high concern. Specifics should refer to the product test report.

19. How to select the model of a high-fineness rotor-type powder separator?

Choose the model corresponding to the processing capacity according to the production line’s requirements, confirm the powder selection efficiency and fineness adjustment range according to the finished sand’s fineness requirement, choose rotor and liner materials according to material abrasiveness, and match a pulse single-bag dust collector according to environmental requirements.

20. How to choose between a high-fineness rotor type classifier and a powerless classifier?

For mechanized sand dry production lines that require high classification efficiency and fineness adjustment, it is preferable to use a high-fineness rotor type classifier; for conditions sensitive to equipment power consumption and investment costs, a powerless classifier can be considered. Both can be matched with a pulse single-bag dust collector to achieve clean production.

Technical FAQ

Which test data improves equipment selection?

Provide feed assay, particle-size distribution, slurry density, liberation size and target recovery or concentrate grade.

Can one machine handle every ore?

No. Mineral properties and process conditions change the required separation method, size and configuration.

Authoritative references

For standards and safety context, see ISO standards and the U.S. Mine Safety and Health Administration. Confirm the exact local requirements for your project.

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