Silica Bricks for Glass Furnaces, Coke Ovens

Refractoriness (℃): 1580< Refractoriness< 1770
Feature: Long Time Materials
Type: Refractory Material
Shape: Brick
Material: Slica
Bulk Density: 2.34-2.36 g/cm3
Customization:

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Basic Info.

Transport Package
Pallet
Specification
ISO9001
Trademark
NR
Origin
China
HS Code
69022000
Production Capacity
20000 Tons/Year

Product Description

Low Creep High Quality Silica bricks for glass furnaces, coke ovens and foundries according to customer requirements;

In general, silica bricks are used for coke and annealing furnace, covering the walls of the furnaces, in high heat areas of melting furnaces.

Advantage:
1) Silicon oxide is above 95%.
2) Good acid erosion resistance.
3) High softening point with temperature.
4) No shrink in burn repeatedly.
5) Temperature of refractoriness under load is above 1650º C Stable Capability, High Quality, Excellent Service, Competitive price is the most important advantage of our products.

Technical Specifications
SiO2 max (%) 94-96
Al2O3 min (%) 1.5-1.0
Fe2O3 min (%) 0.8-1.5
Apparent porosity (%) 22-24
Cold crushing strength (MPa) 30-45
Refractoriness under load (ºC) 1650-1680
Thermal expansion coefficient (1000ºC) (%) 1.25-1.30
Bulk density (g/cm ³) 2.34-2.35












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

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