Eckalite Kaolin

Alternate Names: Ecka Kaolin, Ecka 1, Ecka 2, Ecka Glass Kaolin, Eckalite 1

Oxide	Analysis	Formula
SiO2	46.00%	2.05
Al2O3	38.00%	1.00
Fe2O3	0.80%	0.01
TiO2	0.70%	0.02
K2O	0.30%	0.01
LOI	13.00%	n/a
Oxide Weight		230.31
Formula Weight		264.72

Notes

Eckalite 1, 2, 120, Eckacote and Eckaglas (all kaolinites) are mined and
marketed by ECC Australia Limited.

Eckalite 1, 2, 120 and Eckacote are wet classified from the same feedstock and any colloidal plastic fraction (disordered kaolinite) seems to have been lost in Eckalite 1. Only Eckalite 120 (45% - 2 micron), a coarse micaceous china clay, seems to have any significant ceramic application -in casting slip. The other products are specialised paint, plastic and paper fillers.

I can attach specs for the Eckalites in JPEG or GIF format by e-mail if you
wish.

Eckalite 1 seems to be a similar product to EPK and has a the same iron content (0.58% Fe₂O₃), similar particle size range, but about one third higher TiO2 content (0.60%). This indicates to me that it would be inferior to EPK in porcelain and also inferior to Grolleg. So I think you actually have better products in North America to put in porcelains.

Related Information

Links

Typecodes	Kaolin Pure clay mineral, there are many brand names of varying purity and iron content.

By Tony Hansen
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