Silica Brick I premium Acid Refractory for High-Temperature Industry

Silica Brick I premium Acid Refractory for High-Temperature Industry

Overview

Silica brick is a kind of acid refractory material mainly composed of silica. It features high refractoriness volume stability and strong resistance to acidic slag corrosion. Widely adopted in coking, glass manufacturing, metallurgy and other high-temperature furnace facilities, it ranks among the most dependable refractory products for long-term operation under 1400℃ to 1650℃ working conditions.

Chemical Composition

High-quality silica bricks contain 94%-96%silica content with low impurity content to guarantee superior high-temperature performances. Its main mineral components are tridymite and cristobalite along with minor residual quartz. The stable crystal phase structure prevents deformation and peeling during prolonged high-temperature service.

Key Advantages

1. High Load Softening Temperature

It can maintain stable structure under load at 1640℃-1680℃, making it suitable for load-bearing positions such as furnace crowns, arches and partition walls.

2. Outstanding Acid Corrosion Resistance

It can effectively withstand erosion caused by acidic gas and slag, perfectly fitting working environments of coke ovens and glass furnaces.

3. Stable Volume Air Tightness

Sight thermal expansion at high temperature can fill masonry gaps automatically, boosting furnace air tightness and cutting down heat loss.

4. Low Creep Rate and Long Service Lifespan

Possessing great structural strength under high temperature, the brick is not prone to collapse or deformation, effectively extending the service cycle of industrial furnaces.

Product Types

1. General Silica Bricks: Applied for conventional sections of hot blast stoves and heating furnaces.

2. Coke Oven Silica Bricks: Features high crystal conversion rate and compressive wear resistance, used for carbonization chambers and combustion chambers.

3. Lightweight Silica Insulating Bricks: Applied to high temperature thermal insulation layers for energy conservation.

Applications

1. Coking industry: Coke oven crowns, flues and regenerators

2. Glass industry: Furnace breast walls, crowns and feed channels

3. Metallurgy industry: Blast furnace hot blast stoves and reheating furnaces

4. Building material industry: High-temperature lime kilns, ceramic kilns and other thermal equipment.

Usage Notes

Silica brick own remarkable high-temperature performance yet weak thermal shock resistance below 600℃. Uniform slow heating is required during furnace drying process to avoid cracking caused by drastic temperature change. It is advised to use matched silica refractory mortar for masonry work to secure overall structural stability.

Summary

As an indispensable core acid refractory material for high-temperature industrial furnaces, silica bricks own steady high-temperature strength and great anti-corrosion capability. The product can support stable furnace operation, lower maintenance expenditure and elevate overall production efficiency.