Silica Brick for Coke Oven and Carbon Calciner

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Specifications

Item brand
Bottom and other part
Wall brick brick
Sio2% >= 94
0. 2mpa rul c >= 1650
Linear c

Item	 brandBottom and other partWall brick brickSio2% >=	 940. 2mpa rul c >=	 1650Linear changeAfter re-heating% 1450c x2h <=	 0 /  + 0. 2A. p. % <=	 22	 24C. C. S. mpa >= 30	 25B. D. g / ccm >= 2. 34	 2. 35ThermalDilatation% 1000c <= 1. 28	 1. 30

Performance
Item
Unit 95 Al2O3 96 Al2O3 99 Al2O3
Physical Characteristics Bulk density g/cm3 3.6 3.6 3.9
Water absorption % 0 0 0
Mechanical Characteristics Flexural strength Mpa 320 340 360
Hardness Vickers Gpa 12.2 13.5 15.6
Elastic modulus Gpa 280 320 370
Poisson’s ratio - 0.22 0.23 0.23
Thermal Characteristics Linear expansion coefficient (200C-5000C) 10-6/0C 7.1 7.2 8
Thermal conductivity w/(m.k) 16 24 32
Specific Heat 10-3J/(kgK) 0.78 0.78 0.9
Electrical Characteristics Dielectric constant (1MHZ) - 9 9.4 9.9
Dielectric loss angle 10-4 15 5 1
Dielectric strength 106V/m 12 15 15
Processing technology
Process range (mm)
Outside Diameter 1---300
Inside Diameter 0.5---300
Length 0.5---1200
Accuracy of working (mm)
Perpendicularity 0.01
Concentricity 0.01
Roundness 0.005
Straightness 0.005
Parallelism 0.01
Planeness 0.005
Roughness 0.05
Fit clearance 0.005

Silica Brick For Coke Oven And Carbon Calciner

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: The introduction of silica brick: An acid refractory consisting mainly of quartz and square quartz and a small amount of residual quartz and glass.More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance. 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 quartz in the body. 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: 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: Which material is good for furnace refractory?: Acid refractory with silicon oxide as the main component, are commonly used in brick and clay brick. Silica is silica containing more than 94% silica products, raw materials used in silica, silica and other waste, the acid resistance of slag erosion ability, high load softening temperature, volume shrinkage after repeated burning, or even a slight expansion; but it is vulnerable to the erosion of basic slag, thermal shock resistance is poor. The brick is mainly used for thermal equipment of glass furnace, coke oven, acid furnace etc.. Clay brick with refractory clay as the main raw material, containing 30% to 46% of alumina, weak acid refractory material, heat shock resistance, resistance to acid slag, widely used.

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: How to improve the thermal conductivity of the coke silicabrick rate?: To improve the thermal conductivity of silica brick for coke oven rate method:Manufacture of high density and high thermal conductivity of silica brick, adding additives such as CuO, Cu2O, TiO2, Fe2O3, (FeO), can improve the thermal conductivity of silica brick.

Q: Brick: An acid refractory consisting mainly of quartz and square quartz and a small amount of residual quartz and glass.More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance. 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 quartz in the body. 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: Why is the highest brick coke oven temperature measuring point temperature not exceeding 1450: That is because the brick load softening point the maximum temperature is 1450 degrees.

Q: High temperature refractory material?: Many kinds of refractory materials, usually by refractoriness level is divided into ordinary refractory materials (1580 to 1770 DEG C), advanced refractories (1770 to 2000 DEG C) and special refractories (more than 2000 DEG C); according to the chemical characteristics into acid refractory material, refractory materials and basic refractory materials. In addition, the refractory material used for special occasions.Now the definition of refractory materials, has not only depends on whether the refractoriness at 1580 DEG. Refers to the current refractories used in metallurgy, petrochemical, cement, ceramics and other production equipment with inorganic non-metallic materials.

Q: Physical solid waste disposal: 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

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