Kaolin Clay Powder

Kaolin Powder

Fine kaolin clay powder for uniform mixing, stable performance, and consistent quality in industrial applications.

White to off-white powder with fine particle size and high whiteness, suitable for ceramics, refractories, tiles, construction, rubber, and foundry uses.

Basic Details

Product Summary

MaterialKaolin Clay (China Clay)
ColorWhite to off-white
FormFine powder
StyleHydrous aluminosilicate clay
FeatureFine particle size, high whiteness
ApplicationCeramics, refractories, tiles, construction, rubber, foundry

Monthly Capacity

4000 Metric Ton

Supports bulk orders with flexible packing options (25 Kg / 50 Kg / 1 MT) for domestic and export supply.

Share required quantity and destination for availability and dispatch schedule.

Packing Types / Sizes

Packing Types

HDPE bags / PP bags / Jumbo bags

Sizes
25 Kg 50 Kg 1 MT
  • 25 Kg: HDPE Bags
  • 50 Kg: PP Bags
  • 1 MT: Jumbo Bags

Chemical Composition

Content SiO₂ Al₂O₃ MgO K₂O Whiteness Purity
Typical 45% – 55% 35% – 38% ≤ 0.5% 1.5% – 3.0% 75% – 90% 95% – 99%

Physical & Thermal Properties

Specification Details Specification Details
Melting Point 1750°C – 1785°C Thermal Conductivity Low
Specific Gravity 2.55 – 2.65 Dimensional Stability Excellent at high temperatures
Density 2.4 – 2.6 g/cm³ Porosity Low to medium
Strength Moderate (improves after firing) Water Absorption 10% – 18%
Hardness 2 – 2.5 (Mohs scale) Foam Nil

Uses

Ceramic Bodies

Ceramic Tiles

Refractory Bricks

Foundry Applications

Rubber & Plastic Fillers

Construction Materials

Physical Appearance

  • Form: Fine powder
  • Particle shape: Plate-like (hexagonal flakes)
  • Agglomeration: Low to moderate
  • Shape stability (dry): Excellent
  • Flow nature: Free-flowing to moderately cohesive

Particle & Structural Properties

  • Primary particle size (D50): 0.7–3.5 µm
  • Top cut (D90): 5–10 µm
  • Bulk density (loose): 0.25–0.45 g/cm³
  • Bulk density (tapped): 0.45–0.75 g/cm³
  • Specific gravity (solid): 2.58–2.63
  • Residue on 325 mesh: 0.1–2.0%

Moisture & Absorption

Moisture0.5–1.5%
Water Absorption40–65%
Water of Plasticity28–38%
Oil Absorption30–50 g/100 g

Mechanical Properties

Content Data
Hardness (Mohs)2.0 – 2.5
Green strength (dry MOR)2 – 6 MPa
Dimensions stabilityGood
Handling strengthModerate
Abrasion lossLow

Shrinkage / Contraction

Content Data
Drying contraction2 – 5%
Firing contraction1 – 3%
Total shrinkage3 – 8%
Shape retentionBetter than raw clay

Thermal Properties

Thermal Conductivity0.2–0.4 W/m·K
Firing Temperature1100–1300 °C
Thermal shock resistanceGood
Typical firing soak30–90 minutes

Rheology & Slurry Properties

  • Viscosity (Lehmann): 150–600 cps
  • Slurry density: 1.60–1.75 g/cm³
  • Runout time: 18–40 sec
  • Dispersion behavior: Excellent with low shear deflocculation

Deflocculation

  • Compatible deflocculants: Sodium silicate, Sodium carbonate
  • Optimized addition: 0.1–0.35%
  • Typical working dosage: ~0.2%

Chemical Properties

pH (aqueous slurry) Fluorine (F) MgO Water-soluble salts Loss on ignition (LOI)
4.5 – 6.5 <0.01% 0.05 – 0.5% <0.1% 12 – 14%

Optical / Color Properties

  • Yellowness (b value): 1.5–6
  • Whiteness: 80–94%

Mineralogical Analysis (Typical)

Component Typical Range
Kaolinite85–99%
Mica / Illite0–5%
Quartz0.5–8%
Feldspar / Anatase (trace)<1%

Testing & Quality

Quality checks and documentation to support consistent supply

Testing Parameters

We follow standard checks to ensure consistent quality and compliance.

  • Quality Compliances
  • Chemical Analysis
  • Physical Properties
  • Purity & Consistency
  • Product Specific

Core values

Quality, reliability, transparency, and customer support in every shipment.

Test reports

Any test reports can be shared on request at an additional cost, including third-party testing where required.

Quality fillers

Processed grades suitable as fillers for ceramics, paper, paints, and coatings.

FAQs

Common questions about Kaolin Clay Powder

What is Kaolin Clay Powder mainly used for? +

Kaolin powder is widely used as a mineral filler/extender in paper, paints & coatings, and ceramics depending on the required finish and performance.

Can you provide different particle size requirements? +

Yes, we can discuss your target use-case and align supply parameters where feasible.

Do you provide samples and test reports? +

Samples and test reports can be arranged on request for evaluation and compliance needs.

What packing options do you offer? +

Packing can be arranged based on your shipment and handling requirements. Share your preferred packing type and quantity.

Do you export this product? +

Yes, we provide export-ready supply and can support required documentation for shipments.