RCF KYANITE
Aluminium Silicate
(A12SiO3)
General Description
Elongated blade like euhedral crystals, 4 – 6 cm long by 0,5 – 1 cm wide. Kyanite belongs to the sillimanite group of minerals the principal of which are sellimanite, andalusite and kyanite, all with the above formula. On calcination they alter to mullite 3A12O3 2SiO2 and silica. Dumortietite and topaz are also included in this group.
Typical Chemical Analysis
AI2O3 ……………………61.00%
SiO2…..……………………36.00%
Fe2O3 ………………….…0.65%
Ignition loss……………….0.50%
MgO…………………………0.30%
P2O5…..……………………0.03%
Na2O…..……………………0.03%
TiO2…..…………………….0.01%
K2O…..……………………..0.01%
CaO……………………………<0.01%
MnO………………………..<0.01%
Physical Properties
Colour: Green to grey-green, sometimes with blue tint
Grading: Up to 100% through 400 mesh
Packing: As per customer request, normally 50Kg poly propylene bags
Application
The largest consumption is in high alumina refractory production where, as a pre-fire grog, it imparts high physical strength and high temperature resistance to furnace linings in the metallurgical and glass industries. Various sizes are used for bricks, castables, mouldables and ramming mixes. Raw kyanite is used to offset shrinkage of clays and other components in the firing of tiles and sanitary ware.
Disclaimer
This technical information is submitted on the basis of our own research and the research of others, and we believe it is accurate. However, no guarantee of its accuracy is made neither can we cover every possible application of our products nor can we anticipate every variation encountered in manufacturing equipment and methods. For this reason our products are sold without warranty, express or implied, and also on the condition those purchasers conduct their own tests to determine the suitability of such products for their particular purposes. Statements concerning the possible use of our products are not intended as recommendations to use our products in the infringement of any patent.