Kaolin Clay
Kaolin (china clay) is a hydrated aluminum silicate derived from the mineral Kaolinite.
Kaolin is chemically inert clay with a low shrink-swell capacity, well-suited to a wide range of industrial uses including ceramics, paper, glass fiber, filler, paints, wire and cable and plastics.
Washed Kaolin: OG-71 and OG-60
Our OG series kaolin mined from China is a mixture of halloysite and kaolinite with some illite.
OG series kaolin deposit is characterized by low Fe and Ti level which make it very suitable for ceramics, especially porcelain.
↑TEM of OG series kaolin showing mixture of halloysite tubes and stacks of
kaolinite.
(refer. I. R. WILSON. Clay Minerals (2004). Kaolin and
Halloysite Deposits of China.)
- Specification of Washed Kaolin
|
Model |
Kaolin OG-71 |
Kaolin OG-60 |
|
SiO2 |
51.72 |
- |
|
Al2O3 |
35.41 |
36.54 |
|
Fe2O3 |
0.37 |
0.40 |
|
TiO2 |
0.02 |
- |
|
CaO |
0.20 |
- |
|
MgO |
0.21 |
- |
|
Na2O |
0.03 |
- |
|
K2O |
0.11 |
- |
|
L.O.I |
11.83 |
- |
|
Moisture |
24%±1% |
|
|
Application |
fine porcelain, tableware, sanitary ware |
|
|
Origin |
China |
|
|
Particle Size -2μm passing |
-2μm: ≥69.00, <74.00 |
-2μm: ≥60%, <65% |
|
Firing Whiteness 1280°C |
≥89, <91 |
≥88.5, <90.5 |
Hydrous Kaolin: K99-C, K99-P and K99-F
K99 series kaolins are mined from West Australia with premium brightness and purity. Suitable for paper, white porcelain, fiberglass and other kaolin applications.
The resources and reserves of Australia K99 series kaolin deposit are abundant that gives mine life of 100+ years at 1Mtpa production.
↑K99 Series Kaolin deposit at West Australia
↑The mining of K99 series kaolin is conducted as free dig in open pits down to 30m.
↑Platelet crystalline structure of K99 series kaolin.
