Large Double-Rotor Powder Classifier
The double-rotor classifier is the core classification equipment for closed-circuit grinding systems.
- Trademark / Brand: TONGZHENG
- Place of Origin: Yancheng, Jiangsu, China
- Model: TZ-SF Series (N250-N4000)
- Type: Sand & Aggregate Classifier
- Specification: Optional
Categories: Separation, Classification & Grinding
Product information
Product description
Product Overview
The double-rotor classifier is the core classification equipment for closed-circuit grinding systems. Through its upper and lower series-connected double-rotor structure, it achieves secondary fine classification of powder. By combining the balance principle of centrifugal force and the centripetal suction of the airflow, it enhances classification efficiency and precision. It is widely used in powder processing fields such as building materials, chemicals, and mining.
Performance Features
1. Adopts a combined propeller-type material dispersing disc. The material is dispersed uniformly and fully. It also generates an upward airflow that causes the material particles on the dispersing blades to boil up and become dispersed, making the material particles easier to classify.
2. Classification principle. It adopts an organic combination of multiple classification force fields, including gravity, centrifugal force, and cyclone vortex, resulting in high classification precision.
3. The lower cage rotor helps re-lift the accumulated material particles, increasing the classification capacity and effectively reducing the content of fine powder in the coarse powder.
4. The spatial range of the classification zone and the lifting zone has been optimally designed, improving the classification efficiency.
5. Various anti-condensation devices, such as an elastic sweeper, have been optimally designed inside the machine, achieving a good anti-condensation effect.
Technical Specifications
| Model | TZX-400 | TZX-500 | TZX-600 | TZX-700 | TZX-800 | TZX-900 | TZX-1000 |
|---|---|---|---|---|---|---|---|
| Capacity (t/h) – Cement | 12-16 | 18-22 | 20-26 | 28-35 | 45-54 | 64-76 | 85-105 |
| Capacity (t/h) – Raw meal | 16-20 | 21-28 | 30-35 | 35-46 | 55-65 | 80-90 | 110-130 |
| Fineness (80 μm sieve residue, %) – Cement | 2-6 | 2-6 | 2-6 | 2-6 | 2-6 | 2-6 | 2-6 |
| Fineness (80 μm sieve residue, %) – Raw meal | 8-10 | 8-10 | 8-10 | 8-10 | 8-10 | 8-10 | 8-10 |
| Spindle speed (r/min) | 190-380 | 190-380 | 150-350 | 130-330 | 130-320 | 130-320 | 110-280 |
| Spindle motor – Model | YCTL180-4A | YCTL200-4B | YCTL225-4A | YCTL225-4B | YCTL280-4A | YCTL315-4A | YCTL315-4A |
| Spindle motor – Speed (r/min) | 125-1250 | 125-1250 | 125-1250 | 125-1250 | 132-1320 | 132-1320 | 132-1320 |
| Spindle motor – Power (kW) | 4 | 7.5 | 11 | 15 | 22 | 37 | 55 |
| Circulating fan – Model | SCFNo 8C | SCFNo 8C | SCFNo 10C | SCFNo 12.5C | SCFNo 12.5C | SCFNo 16B | SCFNo 16D |
| Circulating fan – Air volume (m³/h) | 21373 | 32427 | 39437 | 67650 | 75200 | 91200 | 160000 |
| Circulating fan – Air pressure (Pa) | 2367 | 2302 | 2302 | 2355 | 2325 | 2479 | 2700 |
| Circulating fan – Motor | Y180-2 | Y200L-2 | Y225M-4A | Y250M-4A | Y280S-4 | Y300L-6 | Y300K-6 |
| Circulating fan – Power (kW) | 15-18.5 | 22-30 | 37 | 55 | 75 | 110 | 132 |
What Is a Dual-Rotor Separator?
A dual-rotor separator is a dynamic air classifier used in dry powder grinding circuits. Ground material is fed into the separator and dispersed evenly by the rotating impeller-type dispersing plate; the induced upward airflow then carries the particles through the classification zones formed by the cage rotors and the circulating airflow. Fine particles are carried out with the airflow and collected as finished product, while coarse particles settle and are returned to the mill for further grinding. This closed-loop classification improves both grinding output and product fineness control.
Applications
- Cement grinding circuits (open and closed circuit); applying the separator in open-circuit systems can increase output by 60%–100%
- Raw meal preparation in cement plants
- Classification of mineral powders: slag, fly ash, limestone, quartz and other dry materials
- Other dry powder processing lines requiring precise fineness control and high classification efficiency
