Silica Bricks For Coke Oven

 Silica bricks for coke oven are mainly used for regenerator wall, ramp, coking chamber bottom, furnace wall and furnace roof of coke oven.

Coke Oven

The coke oven is a complex thermal equipment that is used continuously for a long time. Its purpose is to heat coal to 950-1050°C for dry distillation under the condition of isolation of air to obtain coke and other by-products. Silica brick has become the main refractory material for coke ovens due to its good thermal conductivity, high load softening temperature, good mechanical strength at high temperature, stable volume change at high temperature, high refractoriness, small residual expansion, and strong resistance to acid slag erosion.

Product characteristics of silica bricks for coke oven

Silica brick has become the main refractory material for coke ovens due to its good thermal conductivity, high load softening temperature, good mechanical strength at high temperature, stable volume change at high temperature, high refractoriness, small residual expansion, and strong resistance to acid slag erosion.

Specifications of silica bricks for coke oven

Silica bricks for coke ovenFurnace bottom, furnace wallOther
SiO2 (%)≥94.5≥94
Al2O3 (%)≤1.2≤1.5
Fe2O3 (%) ≤1.2≤1.5
CaO (%)≤3.0≤3.0
Na2O+K2O (%) ≤0.35≤0.35
Apparent porosity (%) ≥22≥24
Normal temperature compressive strength MPa≥35≥28
0.2MPa Load softening temperature℃≥1650
True Density g/cm3≥2.33≥2.34
Reburn line change % 1450℃x2h0-0.2
Coefficient of thermal expansion 1000℃ (%)≤1.28≤1.3

Application

Silica brick is the main refractory material of the coke oven. The quality of the coke oven plays a key role in energy saving, consumption reduction, high efficiency, environmental protection and improving the service life of the coke oven.

Silica bricks for coke ovens need to have excellent high-temperature volume stability and slag resistance, good thermal conductivity, and low residual quartz content.

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