Zircon flour is made of natural ore-zirconium sand grinding. The
main composition is ZiSiO2 content product purity of calculation.
Natural level zircon powder content for 65% of ZrO2, proportion of
4.6-4.7g/cm¶, 7-8′s hardness.
ZrSiO chemistry is very stable, melting point 2550 degrees.
Therefore in the friction materials can be obtained in the
application of the ideal effect.