Special classifier for silicon carbide powder

Detailed Introduction:

Working Principle:

(1) Feeding Control System: Composed of a star feeder or vibratory feeder integrated with a variable frequency controller and a feed bin, this system realizes continuous and uniform control of the feed rate by adjusting the output frequency/current of the feeder.

(2) Classifier Main Unit: Consisting of a motor, Classifier Wheel, and cylinder, the classifier main unit effectively grades materials by adjusting the rotational speed of the classifier wheel and coordinating with appropriate secondary air intake.

(3) Classifier Impeller: Adjusted through a frequency converter, the impeller is equipped with various protective measures such as loss of voltage protection, overcurrent protection, material level control, operation status monitoring, and alarm systems.

(4) Cyclone Collector: As the primary collection system in the grading process, dust-laden air enters the cyclone collector where, due to centrifugal force, powder slides down the wall and is separated and purified at the end of the inner cone. Purified gas and a small amount of fine powder are discharged through the cyclone center pipe.

(5) Pulse Bag Filter: Comprising a bag collection device, pulse dust cleaning device, and pneumatic control device, this system utilizes imported high-quality PTFE-coated filter bags and Venturi aluminum pipes to enable both online and offline dust cleaning modes.

Performance Advantages and Characteristics:

• Centrifugal Classification: Based on particle size, shape, and density, it performs dry classification without water or washing, resulting in narrower particle size distribution and contaminant-free powders.

• High Efficiency and Reliability: Features include efficient classification, wear reduction technology, reliable sealing without leakage, large particle control, fine powder extraction, complete and stable flow field design, constant gas-solid concentration ratio design, and product yield regulation technology.

• Low Wear: Capable of processing ultrapure and ultra-narrow micropowders with minimal wear, avoiding the wear issues of horizontal classifiers. Under the same material conditions, wear parts last over 5 times longer than conventional classifiers.

• High Classification Accuracy: The stable and complete classification flow field, combined with special sealing measures, effectively prevents coarse particle leakage. The internal recycling of the vertical turbine classifier ensures the desired product particle size.

• Precise Control: The complete and stable flow field established by the high-efficiency and high-precision wheel classifier strictly limits the production of large particles, resulting in excellent particle size distribution and a narrow range of particle sizes in a single production run.

• Full Negative Pressure Operation: Ensures dust-free operation, eliminating the need for a pit foundation, making it convenient for inspection and maintenance.

Technical Parameters:

Note: Capable of producing 1 to 5 particle size segments in a single run. Air compressor power is calculated separately, and capacity varies depending on material specific gravity.

Application Areas:

Fine powder dry classification in industries such as non-metallic mineral powders, abrasive powders, food, pharmaceuticals, papermaking, chemicals, building materials, metallurgy, new materials, and electronic materials. Typical materials include iron ore powder, high-purity quartz powder, and silicon carbide powder.