• Calcined Kaolin
  • calcined-kaolin-250x250

Calcined Kaolin

Properties
Calcined Kaolin is an anhydrous aluminium silicate produced by heating ultrafine natural kaolin to high temperatures in a kiln. The calcination process increases whiteness and hardness, improves electrical properties, and alters the size and shape of the kaolin particles.

Category:

Calcined kaolin based pigments for paper coatings,extenders and fillers, are ideally suited for replacing Titanium Dioxide or other less cost-effective extender pigments while maintaining brightness,opacity and print-through resistance.
Whiteness (F457): 93.5min
Size: -2 Micron>88%
Quantity: 40,000 tons per yea

Properties:

Calcined Kaolin is an anhydrous aluminium silicate produced by heating ultrafine natural kaolin to high temperatures in a kiln. The calcined-kaolincalcination process increases whiteness and hardness, improves electrical properties, and alters the size and shape of the kaolin particles.

Markets for Calcined Kaolin

When formulated into film compounds BariteWorld calcined kaolin improves the thermal properties of agricultural films, giving the potential to reduce heating costs, reduce the planting to cropping time and increase the length of the growing season. In film that requires antiblock additive, calcined kaolin offers an ideal and cost effective balance of antiblock, haze and clarity performance.

In plastics the use of calcined kaolin is in PVC cable to improve electrical performance and in it’s coated as a functional filler in engineering thermoplastics.

BariteWorld offers a range of high performance calcined kaolins from its production plants in the USA.

Quick View

Mineralogy: Metakaolin or amorphous, aluminium silicate (defect spinel)
Particle Shape:Irregular, with surface voids
Specific Gravity:2.6
Refractive Index:1.56
MOH Hardness:4-5
Moisture: (max %)0.5
pH:6-8

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