Types of Ceramic Fillers Suitable for Green Silicon Carbide
1. Structured / Random Ceramic Packing for Chemical Towers (Corrosion-Resistant Support Packing)
Applicable GC grit sizes: 325#, 400#, 600#, 800#
Function: When blended into the green bodies of tower packing such as Raschig rings, Pall rings and cascade mini rings, it boosts the compressive and impact strength of packing pieces and delivers long-term resistance to erosion by acidic and alkaline chemical media. It resists softening and cracking under high-temperature rectification conditions, lowers the risk of tower clogging caused by packing pulverization, extends the replacement cycle of tower internals, and fits scenarios including pickling processes, solvent purification and waste gas scrubbing towers.
2. Honeycomb Ceramic Packing (Heat Storage / Catalytic Carrier Packing)
Common green silicon carbide grit sizes: primarily 1000#, 1200#, 1500#
Functions as a modifying filler for honeycomb ceramic heat storage bricks and exhaust gas catalytic carriers:
① Reinforces the structural strength of honeycomb channel sidewalls and prevents cracking under alternating cold-hot working conditions via superior thermal shock resistance;
② Regulates internal micropore distribution to improve the contact efficiency between exhaust gas and catalytic coatings;
③ Withstands scouring by high-temperature kiln flue gas, widely used for boiler denitrification, VOC catalytic combustion and regenerative thermal oxidizers.
3. Porous Membrane Ceramics / Precision Filtration Ceramic Fillers
Applicable grit sizes: ultrafine powder grades including 800#, 1500#, 2000#, 3000#, 4000#, 6000#, 8000#, 10000#
Applied in water-treatment ceramic membranes, high-temperature flue gas filter cartridges and molten metal filtration ceramic fillers:
① Precisely controls finished pore size and porosity connectivity to stabilize filtration flux;
② Elevates the heat and chemical resistance of filter media for filtering high-temperature wastewater and corrosive chemical filtrate;
③ Reduces sintering cracks and raises the yield of precision porous ceramic products.
4. Foamed Thermal Insulation / Heat-Resistant Structural Ceramic Fillers
Applicable grit sizes: general skeleton grade 325#, ultrafine modified grade 4000#
Function: Incorporated into the formula of foamed ceramic insulation boards and industrial heat-resistant ceramic components, it forms a rigid skeleton to enhance compressive strength, optimizes closed-pore structure for better thermal insulation and fireproof performance, and delivers long-term outdoor weathering resistance and anti-efflorescence capacity for building facades. Ideal for exterior wall insulation and high-temperature kiln lining filling applications.
Summary of Core Modification Effects of Green Silicon Carbide
- Mechanical Reinforcement: Particles act as a rigid skeleton to improve the compressive, flexural and impact resistance of ceramic fillers, cutting breakage loss during handling and field operation.
- Pore Structure Regulation: Graded particle sizes enable precise control over pore diameter and porosity to meet diverse demands for filtration, heat storage and thermal insulation.
- Upgraded Operating Condition Adaptability: High temperature tolerance, thermal shock stability and chemical corrosion resistance suit harsh industrial environments with intense heat and corrosive media.
- Processing Optimization: Good dispersibility with low agglomeration avoids disruption to pore-forming and sintering procedures, accommodates mass assembly-line production and reduces defective rates.
Recommended GC Grit Selections by Application
| Type of Ceramic Filler | Preferred Grit Size | Core Requirements |
|---|---|---|
| Random / Structured Packing for Chemical Towers | 325#–800# | High strength, anti-corrosion and anti-pulverization |
| Honeycomb Catalytic & Heat-Storage Packing | 1200#–1500# | Uniform pores, strong thermal shock resistance |
| Porous Membrane / Precision Filtration Fillers | 1500#–10000# | Fine controllability of pore dimensions |
| Foamed Heat-Resistant Ceramic Fillers | 325# | Skeleton reinforcement, thermal insulation & fireproof performance |
