1) complete conversion of the quartz, the true specific gravity is low (2.34 or less), a low content of residual silica (1%) when using a small volume change.
2) low porosity, bulk density, high strength, good wear resistance.
3) high purity, load softening point temperature> 1650 ℃, high temperature deformation.
4) good resistance to high temperature creep properties
5) low thermal expansion, high temperature volume stability.
6) quality indicators of stability, appearance neat, precise size.
