Silica Brick - Fused Silica Refractory Bricks

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1.Good acid and erosion resistance;
2.Widely used for different furnace;
3.Good bonding and structural strength of furnace.

Features:

1.Good acid and erosion resistance, powerful anti high-temperature strength.

2.Soften melting temperature is 1620~1670 °C.

3.Low thermal shock resistance.

4.Natural silica as raw material, plus regular mineralizer.

5.Ensure good bonding and structural strength of furnace.

6.Good heat resistance and long service life.

Application:

1.Glass melting furnace, ceramic frit kiln, sodium silicate furnace, soaking furnace, ceramic kiln, etc

2.Coke oven's coking chamber, combustion chamber walls, steel open-hearth's regenerator and sediment chamber, etc.

3.Load-bearing parts of high temperature hot air furnace and acid open-hearth furnace roof, etc.

Item	Properties
Item	BG-96A	BG-96B	BG-95A	BG-95B
SiO2,%	96	96	95	95
Fe2O3 ,%	0.8	1.0	1.2	1.2
Melt index,% Unit weight<20KG Unit weight≥20KG	0.5 0.6	— —	0.7 0.7	— —
Cold Crushing strength MPa, Unit weight<2KG Unit weight≥20KG	35(30) 30(25)
Softening temperature under load,°C	1680	1670	1660	1650
Apparent porosity %	22(24)
Bulk density,g/cm3	1.85-1.9
True density,g/cm3	2.34		2.35
Application	sodium silicate furnace,ceramic frit furnace ,glass furnace,coking furnace, metallurgical furnace and other furnaces

$Fused Silica Refractory Bricks$

Q: Semisilica brick interpretation: High temperature volume stability. Volume change is small.

Q: What is the main material of silica brickIt's common, the kind we see so often!: Higher high temperature strength. The softening start temperature is 1620~1670 degrees. Long term use at high temperature without deformation. The thermal shock resistance is low (the heat exchange in water is 1~4 times). The natural silica is used as the raw material, and a proper amount of mineralizer is used to promote the transformation of quartz into phosphorus and quartz. Slowly sintered at 1350~1430 DEG C in the reducing atmosphere. When heating up to 1450 degrees, the total volume of 1.5~2.2% expands, and the residual expansion can close the kerf and ensure the airtight and structural strength of the masonry.

Q: The United States of our brick anti-dumping duties?: . According to the relevant legal procedures, the United States International Trade Commission will make a final ruling on the anti dumping industrial injury before January 6, 2014, if an affirmative determination, the U.S. Department of Commerce will be involved in product release tax anti-dumping order.

Q: Can iron oxide be used as refractory material?: Is widely used in this area. Mentioned refractory material of high school textbooks generally refers to three two aluminum oxide (alumina), alumina is also used as a refractory material, refractory crucible, porcelain, artificial gemstones.

Q: Why is the three oxidation of two silicon is very harmful impurities in silica brick: Heating calcination is the best way to extend this sort of impurity removal. Remove impurities

Q: How to improve the thermal conductivity of the coke silicabrick rate?: The content of SiO2 is 98.23% crystalline silica as raw material, with sulfite pulp liquid as binder, millscale and lime as mineralizer, by Jin Hongshi (TiO2) as additive, can improve the rate of thermal conductivity of silica brick for coke oven. When the rutile content is 1.5%, the coefficient of thermal conductivity of silica brick for coke oven is 2.66W/ (m.k).

Q: Why is the highest brick coke oven temperature measuring point temperature not exceeding 1450: Brick belongs to refractory materials, with strong resistance to acid slag or acid solution erosion ability, high load softening temperature are excellent properties of silica brick, usually 1640-1680 C.

Q: Why in the production of the brick to detect the volume density: Fast density test, please consult an instrument.

Q: The formula in the refractory brick, and firing curve, who knows?: Add 1.8-2.2% of the total weight of the main raw material, and then add lime milk, rolling for 10-15 minutes, and finally add pulp, rolling for 10-15 minutes, out of the mill, forming billet.

Q: Such purpose and scope please give me detailed points thank you: Mainly used for coke oven carbonization chamber and the combustion chamber wall, open hearth furnace regenerator and a sediment chamber, soaking furnace, glass furnace, refractory materials and ceramic brick kiln, kiln vault and other load-bearing parts. Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.

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