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refractories

Sintered Silica

Silica series, a kind of acid refractory material, is mainly consisted of scale quartz, calcite, a small amount of residual quartz and vitreous phase. The content of silica is generally above 94% and true density is 2.35g/cm3. It owns resistance of acid slag erosion and good strength in high temperature conditions. Its refractoriness under load is 1620 ~ 1670℃ and it is capable of long-term working under high temperature without deformation. In addition, thermal shock stability of the series is relatively low. (Heat exchange in water is 1~4 times.)

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Sintered Silica
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Physical and Chemical Indicators

Item CodeGZ-96GZ-95GZ-94BG-96ABG-96BBG-95ABG-95B
Chemical CompositionSiO2%96959496969595
Fe2O31.01.21.40.81.01.21.2
Melt Index (Al2O3+2R2O)
unit Weight<20kg
unit Weight≥20kg
///
0.5
0.6



0.7
0.7


RUL 0.2MPa166016501640
(Cementing Silica 1620)
1680167016601650
AP%22(24)
CCS
unit Weight<20kg unit Weight≥20kg
MPa
35(30)
30(25)
True Densityg/cm32.342.352.342.35
Application FieldsMetallurgical IndustryGlass Furnace Industry
Data in brackets are indicators of handmade bricks.
The technical requirements of bricks which are hand-shaped and with weight over 40kg shall be agreed by both parties.
Application

It is mainly used in top spaces of glass furnace (crown, end wall, breast wall, regenerator section), as well as in metallurgical application. Generally speaking, the performance and index of silicon series applied to glass and metallurgical fields are obviously different.

Characteristics

Silicon series belongs to acid refractory which has good acid corrosion resistance, good thermal conductivity and high refractoriness under load. Besides, the price of the series is relatively low.

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