Working Principle of QLFD Classifier:

The QLFD classifier, along with a feeder, cyclone separator, dust collector, and induced draft fan control system, forms a classification system. Material is quantitatively fed directly into the classification zone from above the equipment under negative pressure. The strong centrifugal force generated by the high-speed rotating classification turbine separates coarse and fine materials. Fine particles meeting the particle size requirements pass through the gaps between the classification wheel blades and are collected in the cyclone separator or dust collector. Coarse particles, carrying some fine particles, are further classified by the impact fan under the action of secondary air. Fine particles meeting the particle size requirements pass through the gaps between the classification wheel blades and are collected in the cyclone separator or dust collector. Coarse particles pass through the fan into the secondary classification zone, where they undergo a third classification under the action of secondary air. Material meeting the particle size requirements passes through the fan into the primary classification zone for further classification. Those meeting the particle size requirements pass through the classification wheel blades and enter the cyclone collector or dust collector. The separated coarse particles are discharged through the discharger.

Performance Characteristics of QLFD Series Classifier:

• Suitable for fine classification of powders, with particle sizes ranging from D97: 5 to 150 microns. Particle size is infinitely adjustable, and product changes are extremely convenient.
• High classification efficiency (extraction rate): 70%~90%.
• High classification accuracy, narrow particle size distribution, completely eliminating excessively large particles and residues in the product.
• Low rotational speed and long service life. For the same particle size, the classifying wheel speed is 50% lower than other horizontal and vertical classifiers. When producing powders with a Mohs hardness <5, the classifying wheel experiences no wear; when producing powders with a Mohs hardness ≥7, the service life of the classifying wheel is 5-8 times longer than other horizontal and vertical models.
• Utilizes a vertical classifying turbine device, resulting in low rotational speed, wear resistance, and low system power consumption.
• Can be used in series with multi-stage classifiers to simultaneously produce products across multiple particle size ranges.
• Can be used in series with ball mills, vibratory mills, Raymond mills, and other grinding equipment to form a closed-loop system.
• The system operates under negative pressure, eliminating dust pollution, ensuring a superior environment, high degree of automation, strong stability, and easy operation.

Application Scope of QLFD Series Classifier:

• [Fine Chemicals, Ceramics, Ores and Refractory Materials] Typical materials include: garnet, silicon carbide, corundum, cerium oxide, alumina, boron carbide, tungsten carbide, corundum, etc.
• [Food, Pharmaceuticals and Health Products] Typical materials include: pollen, hawthorn, pearl powder, stomach medicine, nimodipine, antibiotics, contrast agents, Ganoderma lucidum, gallnut, Polygonum multiflorum, etc.
• [Magnetic Powder, Electromagnetic Powder, Copier Toner and Battery Materials] Typical materials include: lead-acid batteries, nickel-chromium batteries, nickel-manganese batteries, ferrite, manganese tetroxide, manganese dioxide, lithium cobalt oxide, lithium manganese oxide, carbon, etc.
• [Non-metallic Minerals and Powder Metallurgy] Typical materials include: quartz, barite, kaolin, high-calcium minerals, talc, mica, graphite, wollastonite, etc. [Reflective Materials, Pigments, Dyes, and Powder Coatings] Typical materials include: iron oxide, titanium dioxide, and glass microspheres;
• [Pesticides, Feed, and Biological Materials]