Kaolin Granules

Kaolin Clay - Granules

Kaolin Clay (China Clay) in granules form for convenient handling, storage, and controlled feeding during processing.

Off-white to white granules with high purity, low iron, and good thermal stability for industrial use.

Basic Details

Product Summary

MaterialKaolin Clay (China Clay)
ColorOff-white to white
FormGranules
StyleIndustrial mineral
FeatureHigh purity, low iron, good thermal stability

Applications

Suitable for industries that prefer controlled handling and consistent feeding during processing.

  • Ceramics & tiles
  • Refractories & foundry
  • Rubber & plastic fillers
  • Construction materials

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 SiO to ‚‚ Al to ‚‚O to ‚ƒ MgO K to ‚‚O Whiteness Purity
Typical 45% to 55% 35% to 38% ≤ 0.5% 1.5% to 3.0% 75% to 90% 95% to 99%

Physical & Thermal Properties

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

Uses

Ceramic Bodies

Ceramic Tiles

Refractory Bricks

Foundry Applications

Rubber & Plastic Fillers

Construction Materials

Physical Appearance

  • Shape: Irregular granules
  • Lump / Granule Size: 1 to 5 mm, 2 to 4 mm, 3 to 6 mm (customizable)
  • Surface Finish: Natural / slightly rough

Particle & Structural Properties

  • Grain size (D50): 1 to 5 µm (raw); granules may be 50 to 500 µm agglomerates
  • Residue on 325 mesh: 0.5 to 3.0%
  • Surface area (BET): 10 to 20 m²/g
  • Aerated powder density: 0.25 to 0.45 g/cm³
  • Tapped powder density: 0.45 to 0.75 g/cm³
  • Specific gravity: 2.58 to 2.63

Moisture & Absorption

Moisture0.5 to 2.0%
Water Absorption40 to 60%
Water of Plasticity30 to 38%
Oil Absorption30 to 45 g/100g

Mechanical Properties

Content Data
Hardness (Mohs)2.0 to 2.5
Modulus of rupture (dry)2 to 5 MPa
Dimensions stabilityExcellent (low thermal expansion)
SaggingVery low (due to refractory nature)

Shrinkage / Contraction

Content Data
Drying contraction2 to 4%
Firing contraction1 to 3%
Total contraction3 to 7%
Contraction (overall)Low compared to ball clay

Thermal Properties

Thermal Conductivity0.2 to 0.4 W/m·K
Firing Temperature1100 to 1300 °C
Thermal cycles resistanceGood
Cycles (mins)30 to 90 min (typical firing soak)

Rheology & Slurry Properties

  • Viscosity (Lehmann): 200 to 600 cps (depends on solids)
  • Slurry density: 1.65 to 1.75 g/cm³
  • Runout time: 20 to 40 sec (standard flow cup)

Deflocculation

  • Type of deflocculant: Sodium silicate / Sodium polyacrylate
  • Optimized deflocculant addition: 0.1 to 0.35%
  • Deflocculant addition (typical): 0.2%

Chemical Properties

Content pH (aqueous slurry) Fluorine (F) MgO Water-soluble salts
Typical 4.5 to 6.5 <0.01% 0.05 to 0.5% <0.1%

Optical / Color Properties

  • Yellowness (b value): 2 to 6 (low iron grades)
  • Whiteness: 80 to 92%

Mineralogical Analysis (Typical)

Component Typical Range
Kaolinite85 to 98%
Mica / Illite0 to 5%
Quartz1 to 10%
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 Granules

What packing sizes are available? +

Standard packing includes 25 Kg, 50 Kg and 1 MT jumbo bags. Additional packing options can be arranged on request.

Do you provide samples for Kaolin Granules? +

Yes, samples can be arranged for evaluation and testing based on your requirements.

Can you share test reports? +

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

What applications are Kaolin Granules used for? +

Granules are preferred for convenient handling and processing for ceramics and other industrial applications where controlled feeding and reduced dust are beneficial.

What details are needed for an inquiry? +

Please share required quantity, destination, and packing preference. We 'll confirm availability and pricing.