Silica Refractory Bricks are acidic refractory materials primarily composed of Phosphoquartz and Orthoclase Quartz, with a SiO₂ content of ≥94%. These bricks offer excellent high-temperature resistance and are highly effective in resisting acidic environments. With a high load softening point of 1640–1670°C, they exhibit stable volume even at high temperatures, making them ideal for a wide range of furnaces, kilns, and other load-bearing applications.

Physicochemical Parameters

Refractory Specifications

Item	Refractory Specifications
Item	GZ-94	RG-95	GM-1680	GM-1680
SiO₂ (%)	94	95	65	60
Al₂O₃ (%)	1.0	1.0	30	28
Fe₂O₃ (%)	1.4	1.3	2.6	2.5
Bulk Density (g/cm³)	2.35	2.34	2.6	2.5
Cold Crushing Strength (MPa)	30	30	85	80
0.2MPa Refractoriness Under Load (°C)	1650	1650	1650	1550
Apparent Porosity (%)	24	24	8.2	8.5
0.2MPa Shrinkage at 1550°C (%)	0.8	0.8	1.0	1.5
Thermal Expansion (%)	—	—	—	—

Product Features

Excellent Acid Resistance: Silica bricks have strong resistance to acidic slag erosion, making them perfect for acid-prone furnaces and melting kilns.
High Load Softening Point: The load softening temperature can reach up to 1640–1670°C, allowing these bricks to withstand prolonged exposure to high temperatures.
Stable Volume: These bricks maintain stable volume even at high temperatures, ensuring long-lasting durability.
Thermal Stability: While silica bricks have poor thermal stability below 800°C (due to crystallographic changes in quartz), they perform excellently in high-temperature conditions, ideal for use in high-temperature environments.

Applications

Coke Ovens: Used for the separation walls in carbonization and combustion chambers.
Steel Flat Furnaces: Commonly used in soaking pits and slagging chambers.
Reheating Furnaces: Ideal for use in furnace linings.
Glass Melting Kilns: Silica bricks are used in the refractory linings of glass melting furnaces.
Ceramic Firing Kilns: Suitable for high-temperature applications in ceramic firing.
Hot Blast Stoves: Used in high-temperature load-bearing areas.
Acidic Roof of Blast Furnaces: Especially useful in the acidic environment of blast furnace roofs.

Customization Services

We offer various customization options to suit different furnace requirements, including different sizes, shapes (such as arch bricks, anchor bricks, checker bricks, etc.), and colors. Whether you need standard sizes or specially tailored designs, we can provide the best solution.

Pricing and Samples:

Silica Brick Price: The larger the order, the greater the discount. We offer competitive pricing based on quantity.
Free Samples: We provide free samples, with delivery available worldwide.

Packing and Shipping Details

Our Silica Refractory Bricks are securely packed using sturdy, eco-friendly materials to ensure safe transit. For bulk orders, the products are palletized, with custom packaging available upon request. Shipping is available by sea, air, or road, depending on the order size and destination, with delivery times of 5-7 business days for domestic orders and 7-21 business days for international orders. Tracking information will be provided once your order is dispatched. Please note that customs duties, taxes, and import fees for international shipments are the responsibility of the customer. Returns are accepted for defective items within 7 days of receipt.

About Xintai Refractory

Xintai Refractory is a leading manufacturer specializing in high-quality refractory materials. With over 20 years of experience, we provide a wide range of products, including refractory bricks, insulating bricks, and monolithic refractories for various industries such as steel, cement, glass, ceramics, and non-ferrous metals. Known for our expertise in producing durable and heat-resistant materials, Xintai Refractory serves clients globally, offering tailored solutions for high-temperature applications. Our commitment to innovation, quality, and customer satisfaction ensures reliable and cost-effective products for the most demanding environments.