Working principle:

The classifier, dust collector, and induced draft fan form a classification system. Under the suction force of the fan, materials move rapidly from the feed inlet at the lower end of the classifier into the classification zone along with the rising airflow. In this zone, the strong centrifugal force generated by the high-speed rotating classification vortex separates coarse and fine materials. Fine particles meeting the required particle size pass through the gaps between the classifier wheel blades and are collected by the cyclone separator or dust collector. Coarse particles, carrying some fine particles, lose their velocity upon colliding with the wall, descend along the cylinder wall to the secondary air inlet, and undergo intense elutriation by the secondary air, resulting in the separation of coarse and fine particles. Fine particles rise to the classification zone for secondary classification, while coarse particles descend to the discharge outlet for removal.

Equipment Performance Features:

1Using a completely dry production method without water or washing, it is possible to obtain abrasive micro-powders with a narrower particle size distribution and no contamination. A single classification process can produce products of any grade according to current domestic and international standards (e.g., Chinese standard W63 to W3.5, Japanese standard 240# to 3000#, and European standard F230/53 to F1200/3). The yield for a single grade exceeds 75%.
2. High classification precision, more accurate cut particle size, lower required rotational speed, and long service life.
3. Independent cast bearing housing, permanently deformation-free, with a long service life.
4. Optimized transmission design, with low bearing load and long service life.
5. Unique pipeline design facilitates powder flow, reduces wear, and ensures that wear-prone areas are easy to replace and maintain.
6. The company's unique variable frequency feeding system facilitates material dispersion, ensures continuous, uniform, and stable feeding, and aids in product particle size control.
7. Unique internal circulation secondary air design, with adjustable grading cone clearance, significantly reduces air consumption, lowering grading energy consumption and ensuring thorough extraction of fine powder.
8. The separation of flow paths helps reduce wear at the bottom of the classification wheel and is more conducive to controlling larger particles.
9. Fully enclosed negative pressure operation, with no dust pollution.
10. Good stability: once the fixed parameters are adjusted, stable production can be maintained.
11. In particular, the core competitive advantage of more thorough extraction of fine powders and excellent stability has been widely recognized by the industry.

12The entire system adopts automated control, enabling one-key start and stop for simple and convenient operation. It can be connected to the central control system for remote control.

◆ General Applications:
The ZJ-F series precision air classifiers are capable of classifying materials that cannot be processed on conventional sorting equipment. They are particularly suitable for processing products with strict particle size requirements and narrow particle size distribution, such as ground calcium carbonate, kaolin, talc powder, barite powder, copier toner, coatings, mica, graphite, auxin, aluminum hydroxide, and others.
◆ High-purity applications:
ZJ-FThe series of precision airflow classifiers can handle materials with extremely strict impurity content requirements or those highly sensitive to iron contamination, while also meeting the demands for particle size and particle size distribution. Typical materials include: phosphors, titanium dioxide, starch, silica gel, aluminum, copper, luminescent powders, and various high-purity pigments.

◆ Abrasives and hard materials:
ZJ-FThe series of precision air classifiers can perform ultra-fine classification of hard materials with a Mohs hardness of 7 or above. The application of the vertical vortex classifier ensures minimal wear on the equipment. The rotational speed of the classification wheel is adjustable, and the crushing parameters can be optimized. By combining multiple classifiers, narrow-band classification across several particle size ranges can be achieved in a single pass. Typical products include diamond, silicon carbide, boron carbide, tungsten carbide, special ceramics, and emery.

◆ Food, Health Supplements, and Pharmaceuticals:
ZJ-FThe ZJ-F series precision airflow classifiers are capable of ultra-fine processing of pharmaceuticals, food, and health products. Their features, including low-temperature grinding, high-purity operation, high processing smoothness, and easy cleaning, make the ZJ-F series ideal for use in the pharmaceutical, health product, and food industries. These features not only enhance the bioavailability and efficacy of drugs but also reduce production costs. Typical products include pollen, hawthorn, shiitake mushrooms, pearl powder, stomach medications, nimodipine, antibiotic drugs, contrast agents, lingzhi (reishi mushroom), Chinese gall, and polygonum multiflorum.

◆ Other industries:
ZJ-FAll series of precision air classifiers can operate in a closed-loop system with inert gas for classification, enabling the safe classification of materials that are highly prone to combustion, oxidation, or explosion. Examples include carbonyl iron powder, nickel powder, tungsten-cobalt alloy powder, and refined selenium powder.

Main Technical Parameters

Note: The above box only lists some models of equipment. Our company can scientifically combine classification equipment based on the actual needs of users for multi-stage classification, meaning a single set of equipment can produce multiple grades of products at once. For example, the ZJF series precision airflow classifier can produce 1-5 standard finished products in one go. Welcome to make a purchase!