PRODUCT INTRODUCTION
Calcined Kaolin is a high-quality industrial mineral product obtained through controlled calcination of natural kaolin clay. After high-temperature heat treatment, the crystalline structure is adjusted, resulting in improved whiteness, low abrasion, excellent dispersibility and stable chemical properties. It is widely used as functional filler and processing aid in ceramics, refractories, coatings, plastics, rubber, paper and composite materials.
Compared with uncalcined kaolin, calcined kaolin offers better brightness, lower moisture absorption, higher thermal stability and improved covering power. It can reduce sintering deformation in ceramics, enhance corrosion resistance in refractories, improve hiding power in coatings, and increase stiffness and dimensional stability in plastics and rubber.
Our calcined kaolin is produced under strict calcination temperature control, followed by grinding, classification and iron removal processing. It is available in different particle size fractions to meet customer process requirements. Each batch is inspected for whiteness, particle size, loss on ignition, pH value, abrasion and impurity content before shipment.
We provide complete export documents including COA, TDS and SDS for quality traceability and customs compliance. Our technical team can recommend the most suitable grade and dosage according to your application, production process, material system and destination country regulations.
POINTS FOR ATTENTION
ORDER INSTRUCTIONS
1. Confirm Application and Process Requirements
Please inform us of your application field, downstream product, production process, particle size requirement, whiteness target and dosage range. We will recommend the most suitable calcined kaolin grade.
2. Trial Sample and Laboratory Evaluation
We can provide trial samples for formulation test, dispersion evaluation and performance verification. Customers may test whiteness, particle size, settling behavior and compatibility with their material system. Sample COA and SDS will be attached.
3. Confirm Packaging, Quantity and Export Terms
Standard packing: 25kg bag / carton, 50kg bag, IBC jumbo bag. Custom shipping marks and pallet reinforcement available. Quotation under FOB / CIF / DDP is acceptable. Standard export data: HS Code 3824.9999, non-hazardous. Required customs documents: commercial invoice, packing list, bill of lading, certificate of origin, COA and SDS.
4. Delivery and After-sales Technical Support
Each batch is supplied with COA, TDS and SDS. Our technical team supports grade selection, dosage adjustment, dispersion optimization and process guidance, and assists with import declaration information for destination ports.
Trial Order Tip:
For new customers, we recommend a small trial batch first to verify calcined kaolin performance in your actual production system and pre-review export documents before bulk order.
For new customers, we recommend a small trial batch first to verify calcined kaolin performance in your actual production system and pre-review export documents before bulk order.
USAGE NOTES
Dosage Control:
The recommended dosage varies by application, typically from 5% to 40%. Start from lower dosage and adjust according to formulation test and production result.
The recommended dosage varies by application, typically from 5% to 40%. Start from lower dosage and adjust according to formulation test and production result.
Dispersion Operation:
Add calcined kaolin gradually into the matrix under stirring or grinding. Control dispersion time and shear intensity to avoid particle agglomeration.
Add calcined kaolin gradually into the matrix under stirring or grinding. Control dispersion time and shear intensity to avoid particle agglomeration.
Compatibility Check:
Before mass production, test compatibility with resins, polymers, pigments, additives and other fillers. Observe viscosity change, dispersion stability and final product performance.
Before mass production, test compatibility with resins, polymers, pigments, additives and other fillers. Observe viscosity change, dispersion stability and final product performance.
Process Condition Consideration:
Adjust grade and dosage according to particle size distribution, processing temperature, moisture and final product specification. Fine grades usually require more careful dispersion.
Adjust grade and dosage according to particle size distribution, processing temperature, moisture and final product specification. Fine grades usually require more careful dispersion.
Storage & Sea Freight Guidance:
Keep sealed in a dry, cool and ventilated warehouse. Avoid moisture, rain and direct sunlight. It is non-dangerous goods for shipping.
Keep sealed in a dry, cool and ventilated warehouse. Avoid moisture, rain and direct sunlight. It is non-dangerous goods for shipping.
Safety Operation:
Wear dust mask, gloves and goggles during handling. Avoid inhaling dust. If splashed into eyes, rinse with plenty of clean water immediately.
Wear dust mask, gloves and goggles during handling. Avoid inhaling dust. If splashed into eyes, rinse with plenty of clean water immediately.
COMMON FORMULAS
| Application Type | Main System Components | Recommended Grade |
|---|---|---|
| Ceramic Body | Clay, quartz, feldspar, calcined kaolin | CK-100 |
| Refractory Castable | Refractory aggregate, binder, calcined kaolin | CK-200 |
| Architectural Coating | Emulsion, pigment, filler, additive, calcined kaolin | CK-300 |
| PVC Composite Profile | PVC resin, stabilizer, filler, calcined kaolin | CK-400 |
| Rubber Seal | Rubber matrix, carbon black, filler, calcined kaolin | CK-500 |
| Paper Filler | Pulp, filler, retention aid, calcined kaolin | CK-600 |
| Industrial Paint | Resin, solvent, pigment, calcined kaolin | CK-300 |
| Custom Formulation | Customer material system and performance target | Custom Calcined Kaolin |
Formula Guidance:
Use CK-100 for ceramics, CK-200 for refractories, CK-300 for coatings, CK-400 for plastics, CK-500 for rubber and CK-600 for paper. The dosage should be confirmed by formulation test and final product quality inspection.
Use CK-100 for ceramics, CK-200 for refractories, CK-300 for coatings, CK-400 for plastics, CK-500 for rubber and CK-600 for paper. The dosage should be confirmed by formulation test and final product quality inspection.
COMMON PROBLEMS IN DOWNSTREAM PRODUCTION
Whiteness Not Meeting Requirement
High iron content, improper calcination or contamination during handling may reduce whiteness.
Solution: Select low-iron grade, verify calcination quality and avoid contamination in production.
Poor Dispersion and Agglomeration
Insufficient grinding, low shear force or unsuitable particle size causes agglomerates and uneven dispersion.
Solution: Increase dispersion time, optimize grinding condition and use surface-treated grade if required.
Reduced Mechanical Strength in Plastics/Rubber
Poor interface adhesion, excessive dosage or unsuitable particle size may reduce composite strength.
Solution: Reduce dosage, use surface-treated grade and improve interface compatibility.
High Abrasion in Processing Equipment
Hard impurities or unsuitable particle size increase wear on extruders, mixers and molds.
Solution: Select low abrasion grade, control particle size and improve iron removal processing.
Ceramic Sintering Deformation
Unstable mineral composition, improper calcination or wrong body formula may cause deformation.
Solution: Use stable ceramic grade, adjust body formula and control sintering curve.
Coating Viscosity Too High
Fine particle size, high surface area and excessive addition may increase coating viscosity.
Solution: Reduce dosage, select coarser grade and optimize dispersant system.
Customs Detention Due to Mismatched Documents
Incorrect HS code or SDS information triggers inspection and detention at destination ports.
Solution: Confirm destination country regulations before order. Standard export data: HS Code 3824.9999, non-hazardous. We supply consistent full-set SDS / COA documents.
Batch Performance Variation
Changes in raw mineral, calcination temperature or grinding condition cause inconsistent results.
Solution: Standardize production process, inspect whiteness and particle size per batch, and stabilize incoming raw material.
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FAQ
PRICE INFORMATION
- Quotation Basis: CMC price depends on product grade, viscosity, substitution degree, order quantity and delivery terms.
- Price Validity: All quotations are subject to market raw material fluctuation. Normally valid for 7 days unless otherwise specified.
- Price Contains: The quoted price covers product cost and standard export packaging. Freight, insurance and export charges are calculated separately according to Incoterms.
- Tax & Invoice: Commercial invoice for export will be provided. Relevant export tax formalities can be handled.
- Payment Discount: Better price can be offered for larger repeated orders. Please contact us for the latest formal quotation.
DELIVERY TIME & SHELF LIFE
- Production Lead Time: 7–15 working days after receiving your deposit, subject to factory production schedule.
- Shipping Arrangement: After production completion, we will book container and arrange shipment. Port space availability may affect the departure date.
- Transit Time: Sea transit time varies according to destination port, generally ranges from 15 to 45 days.
- Shelf Life: 24 months from production date when stored under proper dry and cool conditions with original sealed packaging.
- Storage Warning: Once the bag is opened, please consume as soon as possible and keep away from moisture, high temperature and direct sunlight.
PRODUCT QUALITY
- Raw Material Inspection: All raw materials are strictly inspected before entering production line to guarantee stable base quality.
- In-process Monitoring: Continuous online monitoring during production for viscosity, substitution degree and moisture content.
- Batch Test: Every finished batch will be sampled and tested before delivery. Qualified report will be provided together with shipment documents.
- Consistency Control: Automated production lines reduce batch difference, ensuring stable performance for repeated orders.
- Quality Support: We accept third-party inspection before shipment. Technical team offers after-sales technical support for quality related issues.
ABOUT US
- Headquartered in Shijiazhuang: Based in Shijiazhuang, Hebei, a globally influential fine chemical production hub with huge capacity and full industrial chain to ensure stable raw materials and bulk supply.
- Geographic Advantage: Convenient inland transport near Tianjin and Qingdao ports, supporting fast container shipment and competitive export logistics cost.
- Full-chain Supplier: One-stop provider of fine chemical additives and matching production equipment, custom service available beyond cellulose ethers.
- Technical Team: Professional team supplies formula consultation, sample testing and product selection for various industrial projects.
- Global Export: Years of export experience, providing reliable goods, full export documents and timely after-sales technical support.
相关产品及设备
USEFUL LINKS
- AIChE https://www.aiche.org/
- IChemE https://www.icheme.org/
- Cheresources https://www.cheresources.com/
- NIST Chemistry WebBook https://webbook.nist.gov/chemistry/
- AspenTech https://www.aspentech.com/
- DECHEMA https://www.dechema.de/en.html
- ChemEngPlanet https://www.chemengplanet.com/
- PubChem https://pubchem.ncbi.nlm.nih.gov/
- Chemical Processing https://www.chemicalprocessing.com/
- ChemIndustry https://www.chemindustry.com/
- PharmaChemEngineer https://www.pharmachemeng.com/
- GlobalSpec https://www.globalspec.com/