Silica Lime Bricks for Coke Oven CMAX-1

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1. Silica brick is the main refractory bricks used in glass melting furnace;its main crystal phase is Tridymite.
2. Silica brick for glass melting furnace is used in building checker chamber, chute, combustion chamber,coking chamber,and furnace arch etc.
3. Silica brick for glass furnace have following characters:
(1)High refractoriness under load.
(2)High heat conductivity.
(3)Good thermal shock resistance.
(4)Solidity stable of capacity in high temperature.

Tech Data

Silica brick for glass furnace
Item:		GF-96A	GF-96B	GF-95A	GF-95B
SiO 2		≥96	≥96	≥95	≥95
Fe 2 O 3		≤0.8	≤1.0	≤1.2	≤1.2
Apparent porosity %		≤22(24)
Cold Crushing Strength MPa	Brick below20KG	≥35(30)
	Brick ≥20KG	≥30(25)
Refractoriness under load ºC		≥1680	≥1670	≥1660	≥1650
True density g/cm ³		≤2.34	≤2.34	≤2.35	≤2.35

Silica brick for coke oven
Item:	CO-94A	CO-94B
SiO2: %	≥94	≥94
Al 2 O 3 : %	≤ 1.5	≤ 1.5
Fe2O3: %	≤ 1.5	≤ 1.5
Refractoriness under load 0.2Mpa	≥ 1650ºC	≥ 1650ºC
Apparent porosity: %	≤ 22	≤ 24
Bulk density: g/cm ³	≤ 2.34	≤ 2.35
Cold crushing strength: MPa	≥30	≥25
Permanent linear change % (1450ºC ×2h)	0~0.2	0~0.2
Thermal expansion(1000ºC)	≤1.28	≤1.30

Silica brick for hot blast furnace
Item	HBF-95
SiO2	≥ 95
Al2O3	≤ 1.0
Fe2O3	≤1.3
Apparent porosity %	≤22(24)
Cold crushing strength MPa	≥45(35)
Remaining quarts %	≤1.0
Refractoriness under load ºC	≥1650
Creep(0.2Mpa ×1550ºC×50h) %	≤0.8
Thermal expansion coefficient (1000ºC) %	≤1.25
Apparent density g/cm ³	≤2.32

Silica Brick For Coke Oven CMAX-1

Q:Why in the production of the brick to detect the volume density: Product quality control of silica brick.

Q:Semisilica brick, clay brick, high alumina brick and what is the difference?: This is a kind of refractory material is divided into three types: semisilica brick (A12O315 ~ 30%), clay brick (A12O330 ~ 48%), high aluminum brick (A12O3>48%).

Q:Brick: The silica mineral phase is mainly composed of tridymite and cristobalite, there is a small amount of quartz and glass. Tridymite and cristobalite and quartz remaining at low temperature due to phase change, volume changes greatly, so the brick thermal stability at low temperature is very poor. In use, under 800 degrees Celsius, slowly heating and cooling, so as not to produce cracks. The use of temperature in blast furnace so should not be below 800 DEG on.

Q:Physical solid waste disposal: Reduce crack production and improve yield. The amount of addition is related to the shape and weight of the brick. The bricks can be added to 20% weight less than 25kg; bricks above 25kg can be added to 30%; for the specific type of brick can be added 30%. into waste silica brick should pay attention to this problem

Q:The brick is mainly used in the place?: Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.

Q:The specific content is what gb/t2608-2012 brick: Quality assessment procedures, packaging, marking, transport, storage, and quality certificates. Suitable for siliceous refractory bricks.

Q:The United States of our brick anti-dumping duties?: At present of our brick anti-dumping rate is 73.10%

Q:How to judge the quality of brick, clay brick, high alumina brick furnace from the appearance?: Mainly from the impurities to determine how much, generally less impurity single color brick.

Q:What is the silica refractory products?: High silicon content in high temperature expansion sintering temperature between 1390-1410 in furnace arch

Q:What is acid refractory?: Acid refractory material usually refers to refractories with SiO2 content greater than 93%. Its main characteristic is that it can resist acid slag corrosion at high temperature, but it is easy to react with alkaline slag.

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