►Description
Silica brick is  the acid refractory ,which consist mainly of tridymite, cristobalite, and a small amount of residual quartz and glass phases.
The silica content is 94% or more. It has acid slag corrosion resistance and higher high temperature strength. The load softening start temperature is 1620~1670 °C. Long-term use at high temperatures does not deform. The thermal shock stability is low (heat exchange in water for 1~4 times). This residual expansion will make the joints tight and ensure good air tightness and structural strength of the masonry.
 
►Features
1.Good acid erosion resistance.
2.Refractoriness 1690-1730°C.
3.Higher refractoriness under load,above 1620-1680°C.
4.Poor Thermal shock resistance,should not be used for the zone which temperature has rapid change.
5.Poor Volume stability at high temperature,must set aside appropriate expansion joint when laying brick.
6.Generally True density is changed between 2.33-2.42g/cm3,the smaller, the better.



►Technical parameters

General silica brick:used for coke oven, glass smelting kiln furnace,steel furnace etc .
Item	GZ-96	GZ-95	GZ-94	GZ-93
SiO2 % ≥	96	95	94	93
Fe2O3 % ≤	1.0	1.2	1.4	1.6
Refractoriness °C ≥	1710	1710	1710	1690
Apparent porosity % ≤	22	22	23	25
Cold crushing strength Mpa ≥	29.4	29.4	24.5	19.6
Refractoriness under load, 0.2MPa, °C ≥	1660	1650	1640	1620
True density g/cm3 ≤	2.34	2.37	2.38	2.39

 
►Application:
It is widely used for coke oven, glass smelting kiln furnace,steel furnace , Hot-blast stove, Hot-blast stove etc.

►Delivery
Package Informations:
1. Packed in a 100cm*100cm fumigated wooden pallet with a waterproof plastic film cover, and tightened with plastic bandages.
2. We can also pack the goods according to your requirements.

Shipping:
1. FEDEX/DHL/UPS/TNT for samples.
2. By Sea for batch goods.
3. Customers specifying freight forwarders or negotiable shipping methods!
4. Delivery Time:3 days for common shape samples;15 days for special shape samples.Within 30 days for batch goods.