Processes
JACAN Powder Equipment
Advanced Dry De-Agglomeration & Classification Solutions for Precipitated Silica
We deliver complete dry processing lines for precipitated silica (white carbon black), covering primary de-agglomeration, fine dispersion, controlled grinding and precision classification. The whole system supports both precipitated and fumed silica processing, with optional dust-free closed-circuit design. Matching air classifier mills (ACM), fluidized bed jet mills, disc jet mills and independent classifiers, it achieves stable micron-scale agglomerate particle size control for tire rubber, silicone rubber, coatings and high-dispersion silica manufacturing.
Dry De-Agglomeration Grinding
Air classifier mills (ACM), fluidized bed jet mills and disc jet mills deliver customized dry processing for precipitated silica. The process breaks hard agglomerates formed after spray drying while preserving primary aggregate structure, with D50 adjustable from 1μm to 20μm. Optional full ceramic lining cuts metal contamination to ppm level, ensuring stable BET surface area and reinforcing performance for high-dispersion and fumed silica grades.
Precision Air Classification
Independent vertical & horizontal air classifiers work with grinding equipment to form a closed-loop system. Sharp cut point strictly controls Dmax and removes oversized particles, ensuring batch-to-batch PSD consistency. Real-time particle size monitoring stabilizes finished powder quality, meeting strict inlet specifications for tire rubber, silicone rubber and high-end coating applications.
Dust-Free Closed Conveying
Fully sealed negative pressure conveying pipelines, lined with alumina ceramic or PU, eliminate secondary metal abrasion contamination. The closed system suppresses moisture absorption and prevents re-agglomeration during transfer, while containing silica dust emission. It fully complies with cleanliness standards for high-purity amorphous silica production lines.
Intelligent Closed-Loop Quality Control
Online particle size detection paired with an automatic regrinding loop returns oversized silica particles for reprocessing. All production parameters are fully traceable, realizing digital quality management for mass production of precipitated and fumed silica, and guaranteeing consistent finished powder performance batch after batch.
JACAN Powder Equipment
Air Classifier Mill｜Integrated De-Agglomeration & Classification for Precipitated Silica
Integrated single-unit equipment combining impact de-agglomeration and built-in turbine classification. Optimized for medium-fineness mass production of precipitated silica (white carbon black), D50 adjustable 3–15μm, stable Dmax control. High throughput, small footprint, low comprehensive operating cost for large precipitated silica factories.
Integrated De-Agglomeration & Classification
Air Classifier Mill integrates impact rotor and built-in turbine classifier without external matching classifiers. It efficiently breaks hard agglomerates formed after spray drying of precipitated silica with minimal damage to primary aggregates. Oversize particles fall back for regrinding inside the unit, closed-circuit design cuts plant area and auxiliary piping investment for silica production lines.
On-Line Particle Size Adjustment
Turbine wheel frequency conversion speed regulation allows real-time D50 & Dmax adjustment without shutdown, adapting flexible production switching between multiple silica grades (rubber grade, coating grade, high-dispersion grade).
Water-Cooled Temperature Stabilization
Optional water jacket for grinding chamber dissipates friction heat, lower operating temperature suppresses electrostatic re-agglomeration of silica powder, preserving BET surface area and dispersibility of finished precipitated silica.
Ceramic Lining for Low Metal Contamination
Full ceramic lining for rotor, liner and classifier wheel reduces metal abrasion pollution to ppm grade, meets high-purity requirements of transparent silicone rubber, food-grade and cosmetic-grade precipitated silica.
Narrow Particle Size Distribution
Built-in high-precision turbine wheel delivers sharp cut-off, finished silica powder has consistent Dmax index, ensuring uniform dispersion in rubber compounding and stable matting performance in coating applications.
Negative Pressure Dust-Free Operation
Whole unit micro-negative pressure closed loop equipped with cyclone & bag collector, zero silica dust leakage, low material loss and no workshop environmental pollution — especially critical for ultra-light precipitated silica powder.
Application Limitations
Not suitable for high-dispersion precipitated silica requiring D50 below 2μm; for ultra-fine specifications, fluidized bed jet mill delivers better fineness and narrower PSD performance.
Supporting Equipment
JACAN Powder Equipment
Fluidized Bed Opposed Jet Mill｜Ultrafine De-Agglomeration for High-Dispersion Precipitated Silica
Fluidized bed opposed jet mill adopts particle self-collision de-agglomeration principle without medium contact. Specially developed for ultrafine high-dispersion precipitated silica, D50 adjustable 1–5μm, Dmax strictly controlled under 8μm, ideal for high-end silicone rubber, matting agent and hydrophobic silica production.
Low Contamination Particle-on-Particle De-Agglomeration
Supersonic opposed nozzles accelerate silica particles to collide mutually instead of hitting metal walls, metal abrasion pollution minimized, fully meet ultra-high purity requirements of transparent silicone rubber, cosmetic and food-grade precipitated silica.
Controllable Ultrafine Particle Size
Matched high-precision vertical turbine classifier, stably produces ultrafine silica powder with Dmax ≤8μm, narrow PSD improves dispersion in rubber compounding and uniform matting performance for coatings.
Natural Low-Temperature De-Agglomeration
Rapid air expansion absorbs heat to keep processing temperature below 80°C, suppress electrostatic re-agglomeration of fine silica powder and protect original BET surface area. No additional water cooling system required for standard production.
Sharp Cut-Point & Narrow PSD
Built-in vertical turbine wheel realizes ultra-sharp separation boundary, few oversized residues, consistent dispersibility and reinforcing performance across silica production batches.
Full Ceramic Wear Protection
All material contact parts (chamber, nozzles, classifier wheel) adopt high-purity zirconia/alumina ceramic lining, long service life and ultra-low metal impurity output.
Modular Design & Easy Maintenance
Quick-release flange and large access inspection ports, wear spare parts replaced rapidly, shorten downtime for high-value high-dispersion precipitated silica production lines.
Application Limitations
Higher compressed air consumption, not economical for large tonnage conventional rubber-grade precipitated silica mass production; medium-fineness scenarios prefer air classifier mill for lower running cost.
Supporting Equipment
JACAN Powder Equipment
Spiral Jet Mill｜Compact R&D & Small-Batch Silica De-Agglomeration Equipment
Spiral jet mill with flat disc grinding cavity, few rotating components, easy disassembly and thorough cleaning. Suitable for lab R&D, frequent material switching and small-batch trial production of precipitated silica, D50 adjustable 1–10μm, low initial investment.
High Cost Performance for Small Batch Production
Simple spiral vortex structure with only classifier wheel as moving part, low spare parts cost. Within D50 2–10μm small-batch test range, it achieves stable de-agglomeration effect with lower air consumption compared to fluidized bed jet mill.
Natural Low-Temperature De-Agglomeration
Jet expansion cooling keeps material temperature under 90°C, suppress electrostatic re-agglomeration of fine precipitated silica during small-scale trials and preserve BET performance.
Simple Structure & Easy Cleaning
Flat disc chamber without complex internal baffles, quick full disassembly. Ideal for laboratories that frequently switch rubber-grade, coating-grade and high-dispersion silica to avoid cross-contamination.
Full Ceramic Lining for Low Contamination
Chamber wall, nozzles and classifier wheel lined with alumina ceramics, suitable for lab high-purity precipitated silica formulation research.
Wide Adjustable Medium-Fineness Range
Built-in turbine wheel supports continuous fineness adjustment D50 1–10μm, covers all conventional lab test particle specifications of precipitated silica.
Negative Pressure Dust-Free Operation
Closed negative-pressure cycle with dust collector, keep lab environment clean during precipitated silica sample preparation.
Application Limitations
Low single-hour throughput, not applicable for large-tonnage mass production; Dmax control accuracy inferior to fluidized bed jet mill for ultrafine high-dispersion precipitated silica.
Supporting Equipment
JACAN Powder Equipment
Independent Air Classifier｜Precision Size Sorting for Precipitated Silica Powder
This unit only undertakes particle classification without de-agglomeration function, and needs to form a closed-loop production line matched with all types of dry de-agglomeration equipment. Two structural types are available: vertical for large throughput and horizontal for ultra-precise cutting. It can strictly screen out oversized particles to meet the production requirements of high-dispersion precipitated silica powder.
Sharp Cut-Point & Narrow PSD
High-speed turbine wheel generates strong centrifugal field. Eligible fine powder passes through gaps, while oversized particles are thrown back for re-de-agglomeration, eliminating batch fluctuations of precipitated silica particle size.
On-Line Particle Size Adjustment
Turbine speed is regulated by frequency converter without shutdown, enabling flexible switching of Dmax control standards for multiple silica grades.
Closed-Circuit System Efficiency Boost
Oversized silica materials are recycled in real time to avoid over-processing of fine powder, reducing power consumption and improving overall yield compared with open de-agglomeration lines.
Ceramic Lining for Low Metal Contamination
The classifier wheel, inner cavity and all air ducts adopt full ceramic lining, matching the production demand of high-purity precipitated silica under closed circulation.
Dual Configurations for Diverse Demands
Vertical version for mass production of conventional rubber & coating-grade precipitated silica; horizontal version for ultra-fine high-dispersion silica with strict Dmax limit requirements.
Stable Operation & Low Maintenance
Turbine assembly with dynamic balance and heavy-duty bearing system enables long continuous operation on silica production lines with minimal routine maintenance.
Application Limitations
No independent de-agglomeration capacity, must be matched with dry de-agglomeration equipment. Classification efficiency drops sharply when feed D50 is lower than 2μm.
Supporting Equipment
JACAN Powder Equipment
Continuous Three-Roller Coating Modifier｜Surface Modification Equipment for Precipitated Silica
Continuous three-roller coating modifier adopts high-shear roller extrusion principle for dry surface modification of precipitated silica. It can be directly connected to the rear end of de-agglomeration equipment to form an integrated production line of de-agglomeration + modification. Suitable for large-scale production of hydrophobic precipitated silica, uniform silane coupling agent coating, stable batch quality, ideal for silicone rubber, coating and plastic additive applications.
Continuous In-Line Production
Can be directly docked to the rear end of air classifier mill or jet mill de-agglomeration lines, no intermediate transfer required. Realize one-stop processing from raw silica powder de-agglomeration to surface hydrophobic modification, reduce material handling and comprehensive production costs.
High-Shear Uniform Coating
Differential-speed three rollers generate strong shear and extrusion forces, silane coupling agent is evenly wrapped on silica particle surfaces. Complete and uniform modified layer ensures stable hydrophobic performance and consistent reinforcing effect in downstream rubber compounding and coating systems.
Precise Temperature Control System
Each roller section is equipped with an independent temperature control system to accurately regulate modification temperature. Avoid over-reaction of silane coupling agent caused by local overheating, ensure stable modification quality and prevent BET surface area degradation during processing.
Intelligent On-Line Parameter Adjustment
Roller speed, modifier dosage, feed rate and retention time can be digitally adjusted, flexibly adapting to different silica grades and modification formula requirements. Quick formula switching supports multi-variety hydrophobic precipitated silica production.
Closed Negative Pressure & Low Volatilization
Fully sealed chamber with micro-negative pressure operation reduces silane modifier volatilization and silica dust emission. Closed system ensures workshop environment cleanliness and high raw material utilization rate, complying with environmental and occupational safety standards.
High-Capacity Mass Production Design
Continuous operation mode supports 24-hour uninterrupted production, single machine output far exceeds batch high-speed mixers. Ideal for large-scale hydrophobic precipitated silica factories pursuing high efficiency, stable quality and low unit cost.
Application Limitations
Not suitable for small-batch multi-grade R&D and trial production; for formula development and frequent material switching scenarios, batch high-speed mixing modifier delivers better flexibility and cost performance.
Supporting Equipment
JACAN Powder Equipment
Global Project Highlights & Customer Sites
Our complete dry-process production lines for precipitated silica operate across major chemical, rubber and coating manufacturing bases worldwide. Customized de-agglomeration, classification and surface modification systems deliver silica powder with narrow PSD, low metal impurities and stable BET & dispersibility that meet global rubber, silicone and coating industry standards.
