AKW alumina powder granulator is a professional powder forming equipment independently developed by AKW brand targeting the characteristics of α/γ alumina, 95~99.9% high-purity alumina ultrafine powder and nano-alumina. The full product line covers three mainstream models: inclined wet high-efficiency granulator, spray drying granulator and dry roller press granulator. Optimized structurally and configurationally for alumina powder working conditions, the equipment integrates powder mixing, additive wetting, precision pelletizing and particle densification shaping into one unit. It effectively solves common industry pain points of alumina ultrafine powder, such as easy dusting, poor fluidity, uneven dry pressing filling and sintering cracking. With high sphericity, uniform particle size and excellent fluidity, particles produced by AKW equipment are widely applicable to the whole industrial chain production of electronic ceramics, structural ceramics, high-end refractory materials, polished alumina and precision corundum products. It serves as a core special equipment for quality improvement, cost reduction and efficiency enhancement in alumina powder forming.
Three Core AKW alumina powder granulator Models: Working Principles and Application Scenarios
1 AKW Inclined High-Speed Mixing Granulator ( First Choice for Small & Medium Batch/Laboratory Use)
1.1 Working Principle
Adopting AKW exclusive inclined tank structure, paired with an eccentric high-speed rotor and fixed scraper to form a three-dimensional composite motion system, the equipment enables alumina powder to perform continuous rotary, shearing and falling turbulent motions in the tank. Combined with a precision quantitative spraying system for bonding aqueous solutions such as PVA and dextrin, the powder achieves layered and uniform agglomeration and pelletizing. Mixing, wetting and granulation are completed in one step, and automatic discharging is realized via a hydraulic tilting structure, featuring high molding efficiency and superior particle consistency.
1.2 Core Parameters
Discharge particle size: adjustable from 0.07mm to 5mm, with 0.15~0.6mm as the conventional special particle size for dry-pressed ceramics in the alumina industry; pelletizing rate ≥ 95% with particle size deviation ≤ ±5%, leading the industry in precision. The full series covers laboratory models (1L) to industrial mass-production models (12000L) with a capacity range of 5kg/h to 5t/h, meeting demands from R&D trial production to small and medium batch mass production.
1.3 Applicable Materials
High-purity electronic alumina, microcrystalline corundum powder and special ceramic powder, suitable for production scenarios with multiple formulas, small batches and frequent material replacement. Adopting AKW optimized wet low-water granulation technology, the binder addition amount is only 5%~12%, effectively ensuring the purity and sintering performance of finished products.
1.4 Product Advantages
This AKW series features small footprint, convenient material replacement and no cross-contamination. The core material contact parts are equipped with polyurethane lining or wear-resistant surfacing technology to resist high hardness abrasion of alumina and greatly extend equipment service life. It is equipped with a brand-customized PLC intelligent control system that can store multiple sets of production formulas, supporting one-click switching of production for different particle sizes and formulas with simple operation and stable mass production performance.
2 AKW Spray Drying Granulator ( Large-Scale Mass Production & Top-Grade Sphericity)
2.1 Working Principle
Based on AKW mature alumina powder forming technology, alumina powder, special additives and deionized water are proportionally milled to form uniform slurry with a solid content of 40%~65%. The slurry is high-speed dispersed into fine droplets via a high-pressure pump or centrifugal atomization system, and instant drying is achieved with a 120~280℃ precise constant-temperature hot air system. The droplets naturally shrink into solid, round and dense spherical particles by surface tension. Finished fine powder is recovered through tank bottom discharging and cyclone dust removal system, with a total powder recovery rate of over 97%.
2.2 Core Parameters
Finished particle size: 20μm~200μm, suitable for high-end molding processes such as precision dry pressing and isostatic pressing. Single tower capacity ranges from 50kg/h to 15t/h, supporting 24-hour continuous automatic mass production, serving as the core main equipment for large-scale standardized alumina powder production lines.
2.3 Applicable Materials
99/95 porcelain industrial alumina, semiconductor high-purity alumina and ceramic substrate special alumina powder, focusing on large-batch, high-precision and highly standardized mass production scenarios.
2.4 Product Advantages
Particles produced by the AKW spray drying granulator feature high roundness and excellent fluidity, completely solving bridging and uneven filling problems of powder during mold filling. It ensures uniform and stable density of ceramic pressed blanks, greatly reduces defective rates caused by sintering pores, deformation and cracking, and significantly improves the yield of high-end alumina ceramic finished products.
3 AKW Dry Roller Press Granulator (Low Moisture & Low-Cost Granulation)
3.1 Working Principle
Designed for the production demands of low organic matter and high-purity alumina, dry alumina powder with moisture content ≤5% is uniformly fed through the AKW customized screw pre-pressing system, extruded into dense thin sheets by high-pressure rollers, and then screened into standard sized molded particles via professional crushing and classification systems. The whole process adopts pure dry physical molding without water or binder addition.
3.2 Core Parameters
Adjustable finished particle size: 0.5~6mm, capacity: 200kg/h~3t/h, maximum roller pressure up to 210MPa, ensuring high particle density and stable molding performance.
3.3 Applicable Materials
Refractory grade calcined alumina, wear-resistant filler alumina and recycled industrial alumina dust, suitable for alumina product production with strict organic residue control and high-temperature sintering working conditions.
3.4 Product Advantages
The AKW dry roller press granulator eliminates drying and liquid feeding processes, featuring lower energy consumption, shorter production flow and greatly reduced comprehensive production cost. The molded particles have dense structure and high strength without organic doping, meeting the stringent production standards of high-end refractory materials and industrial fillers.
4. General Core Advantages of AKW Granulator Equipment
1). Custom Wear & Corrosion Resistance for Harsh Alumina Working Conditions: Core material contact parts of all AKW granulators are equipped with customized configurations such as high-wear-resistant stainless steel and thickened polyurethane lining, optimized specifically for the high-hardness and high-abrasion characteristics of alumina. The equipment features strong wear and corrosion resistance, low failure rate and far longer service life than ordinary industrial equipment.
2). Multi-Dimensional Precision Particle Size Control for Full Process Compatibility: Equipped with AKW self-developed speed regulation, intelligent liquid feeding, constant hot air temperature and high-pressure roller regulation systems, the equipment precisely controls finished particle size and density in multiple dimensions, perfectly adapting to various alumina molding processes including dry pressing, isostatic pressing and hot die casting to meet particle size standards of diverse industries.
3). Quality Improvement & Cost Reduction for Higher Production Efficiency: Alumina powder granulated by AKW equipment is dust-free with greatly improved fluidity, reducing workshop dust pollution by 90% and achieving more compliant production environment. Uniform mold filling density increases the yield of sintered ceramics by 10%~20%, effectively lowering raw material loss and scrap cost.
4). Modular Automatic Configuration for Large-Scale Production: The equipment can be matched with AKW automatic feeding, quantitative liquid supplementation, online screening and closed-loop dust removal systems to realize full-process automatic and unattended production of alumina granulation, suitable for upgrading and renovation of large, medium and small production lines.
5. Application Fields of AKW Granulator Equipment
2). Structural Wear-Resistant Ceramics: Granulated particles are used for molding wear-resistant structural parts including corundum wear-resistant liners, ceramic plungers, wear-resistant ceramic pipelines and sandblasting corundum sand.
3). Refractory Materials: Applicable to granulation of calcined alumina, used for high-temperature refractory products such as corundum refractory bricks, high-temperature castable aggregates, furnace high-temperature accessories and refractory fillers.
4). Functional Powder Materials: Capable of precision granulation processing for polished alumina, γ-alumina for catalyst carriers, lithium battery insulating filler alumina and other functional powders.
6. AKW Granulator Equipment Selection Guide
2). Annual output of over 1,000 tons and standardized mass production of high-end alumina ceramics → Prefer AKW Spray Drying Granulation Production Line
3). Refractory alumina, binder-free dry granulation and industrial dust recycling granulation scenarios → Prefer AKW Dry Roller Press Granulator
