Silica brick for coke oven

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The silica bricks for HBS
Silica fire brick for coke oven
High density silica fire brick
Semi-silics fire brick for coke oven

1.Silica brick manufature.
2.High refractoriness under load.
3.High heat conductivity.
4.Good thermal shock resistance.

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

Q: Physical solid waste disposal: The production of silicon material is added to the cause of waste brick:Preparation of silica brick pug, a certain amount of waste silica brick used to add ingredients, for the purpose of expansion and stress reduction products during firing

Q: Semisilica brick interpretation: Good thermal shock resistance. In use, more high viscosity glass phase can be formed, and the masonry brick joint and the working surface are dense and the masonry is complete, which is beneficial to improve the impermeability of the masonry and reduce the erosion effect of the slag on the masonry.

Q: What is the main material of silica brickIt's common, the kind we see so often!: More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance.

Q: Why is the three oxidation of two silicon is very harmful impurities in silica brick: Can generate the material needs is the best way to see the impurity problem!! the first consideration is whether can get the material impurities with what method choice after the time! Miscellaneous reactions cannot have new impurity formation! Selected cannot and need material reaction reagent!

Q: Can not use it two brick: Acidic silica brick refractory material, has good ability in acid slag erosion

Q: Common bond brick?: Lime should contain a lot of active CaO, I decompose CaCO3 and MgCO3 not more than 5%, Al2O3+Fe2O3+SiO2 no more than 5%. When the content of large particles, burned Ca-CO3 and over burned lime, the product produced caves, affecting the quality of products.

Q: What are the main constituents of refractory bricks?: (a) containing refractory brick brick, refers to more than SiO293%, is the main varieties of acid resistant brick. It is mainly used for coke oven building, also used in furnaces all kinds of glass, ceramic and carbon calciner, refractory brick arches and other load-bearing parts, is also used in high temperature bearing part of hot blast stove, but should not be used in thermal equipment below 600 DEG C and the temperature fluctuation in the.

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: High temperature refractory material?: Special materials often use AZS brick (i.e. corundum brick), corundum brick, magnesia chrome bricks, silicon carbide, silicon nitride bonded silicon carbide, nitrides, silicides, sulfide, boride, carbide and other non oxide refractory materials; calcium oxide, chromium oxide, alumina, Magnesium Oxide, beryllium and other refractory materials. Insulation refractories are often used diatomite products, asbestos products, insulation board. Unshaped refractories are often used refractory castable, refractory clay, refractory ramming material, refractory plastic and fettling material, fire resistance, gunning, refractory cast material, fireproof coating, lightweight refractory castable, gun mud.

Q: The formula in the refractory brick, and firing curve, who knows?: Iron scale powder 0.45-0.55%, cement 0.9-1.1%, lime milk 6.5-7.5%, pulp 1.95-2.2%, the silica powder, perlite will be added to the wet mill in proportion, and then add iron scale powder, cement, dry roller 1-2 minutes later

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