Explosive Market Demand: Spherical Alumina Acts as Core Guarantee for Separator Thermal Conductive Materials

High-Purity Alumina Ceramic Powder: Precision Control Chain from Raw Materials to Finished Products

Longxin Intelligent: Integrated Line of High-Flow Pin-Type Nano Bead Mill & High-Temperature Spray Drying Tower for Ultrafine High-Purity Spherical Alumina Production

How Longxin WSP Series High-Flow Pin-Type Nano Bead Mills Achieve Superior, Stable & Cost-Efficient Grinding

1. Composite Turbine-Pin 3D Grinding System
   Inside the silicon carbide grinding chamber, materials are subjected to dual forces of circumferential vortex flow and radial impact. Matched with 0.2–0.5 mm high-roundness zirconia beads, particles are refined through combined shear, collision and extrusion, enabling stable control of D50 between 100 nm and 2 μm.
2. Screenless Centrifugal Separation Technology
   Fully eliminating traditional metal screens, it separates grinding media and slurry via centrifugal force fields to completely avoid screen clogging and metallic contamination. It supports ultra-long continuous operation and meets cleanliness requirements for high-purity material production.
3. Intelligent Closed-Loop Control System
   Integrated with PLC, temperature/pressure sensors and online particle size detectors, the system can link with MES systems to realize automatic parameter adjustment, full quality traceability and flexible product changeover, compatible with multiple material systems including lithium iron phosphate, silicon-carbon anodes and boehmite.
4. The silicon carbide grinding chamber delivers 3 times higher thermal conductivity than stainless steel. Paired with jacket wall cooling, it maintains low discharge temperature, effectively preventing phase transformation or agglomeration of heat-sensitive materials like boehmite and stabilizing slurry performance.

High-Temperature Spray Drying Tower: CFD Simulation & Fully Self-Developed Technology for High-Sphericity Granulated Powder

1. CFD-Optimized Hot Air Distribution System
   Numerical simulation precisely regulates the internal hot air flow field to realize uniform drying, eliminating local overheating or incomplete drying.
2. Fully Self-Developed Ultra-High-Speed Centrifugal Atomizer
   Rotational speed reaches up to 20,000 rpm, generating finer atomized droplets with narrower size distribution and boosting pellet spheroidization rate.
3. Customizable Atomizer Disks for Multiple Scenarios
   Flat disks, toothed disks and composite disks are available to adapt to alumina, boehmite and other slurries with varying viscosity and solid content.
4. Dual Oil-Air Cooling System with Real-Time Monitoring
   Enables long-term stable operation of the atomizer under working temperatures above 200°C.
5. Advanced Offline Pulse Bag Dust Collector
   CFD-optimized flow field structure fitted with heat-resistant filter bags (temperature resistance ≥200°C) and cold air protection system achieves powder recovery rate over 99%, minimizing loss of ultrafine powder.

Integration of Multi-Dimensional Energy-Saving Technologies: Longxin Intelligent Develops High-Efficiency Low-Consumption Spray Drying Systems

1. Hot Air Energy Management to Improve Heat Utilization Efficiency
   • Optimized temperature difference between air inlet and outlet: Raise inlet air temperature on the premise of qualified powder moisture content to reduce required hot air volume.
   • Waste heat recovery system: High-temperature exhaust gas carries 10–20% of process heat. Longxin Intelligent standardly equips air-air heat exchangers or exhaust recirculation preheating modules. Recovered waste heat can preheat fresh intake air to lower the load of main heaters, and preheat feed slurry to 40–60°C to reduce viscosity and optimize atomization effect.
2. Precise Regulation of Process Parameters to Cut Energy Consumption at the Source
   • Elevate feed solid content: Raising the solid loading of alumina slurry from 30% to 45–50% reduces water evaporation volume by nearly 30%, directly slashing energy consumption by over 20%. High-solid low-viscosity slurry produced by Longxin nano bead mills provides reliable support for high-concentration feeding.
   • Intelligent atomization matching: Variable-frequency centrifugal atomizers dynamically adjust rotational speed according to slurry properties to ensure uniform droplet size, avoiding secondary drying or fine powder loss caused by oversized droplets. Even atomization shortens drying duration and eliminates invalid heat loss.
3. Stable Continuous Feeding
   High-precision screw pumps with PID flow closed-loop control eliminate temperature fluctuations induced by unstable feeding, stabilize the thermal field inside the tower and avoid repeated reheating cycles.
4. Optimized Equipment Structure & System Design
   High-efficiency dust collection and powder recovery: Heat-resistant bag dust collectors with offline ash cleaning achieve recovery rate above 99%. Reduced material loss equals lower energy consumption per unit product. Automatic periodic ash cleaning stabilizes system pressure drop and cuts power consumption of induced draft fans.
5. Intelligent Control System for Dynamic Energy Conservation
   • 3D thermal field monitoring: Multi-point sensors installed at air inlet, drying zone and air outlet build real-time thermal distribution models.
   • Adaptive algorithm parameter tuning: Automatically adjust inlet air temperature, atomizer rotational speed and exhaust air volume based on feed concentration and ambient temperature & humidity to keep equipment running at the minimum valid energy consumption point.
   • Recipe storage & one-click switching: Pre-save optimal drying curves for spherical alumina, boehmite, activated alumina and other materials to eliminate energy waste from trial-and-error process adjustment.

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