Refractory Silica Brick

Product Description

Descriptoin of Calcium-free Silica Brick

Calcium-free silica brick is a refractory material with special properties and uses. Calcium-free silica brick is a siliceous refractory material made of silica as the main raw material, and the content of impurities such as calcium oxide is strictly controlled during the production process. Its main component is silicon dioxide (SiO₂), the content of which is usually above 95%, and it also contains a small amount of impurities such as aluminum oxide (Al₂O₃) and iron oxide (Fe₂O₃).

Characteristics of Calcium-free Silica Brick

Low porosity
Good thermal shock resistance
High load softening temperature
Good high temperature performance

Application of Calcium-free Silica Brick

Glass industry: commonly used in the heat storage chamber, small furnace, pool wall and other parts of glass kiln;
Metallurgical industry: in some special metallurgical furnaces, such as reverberatory furnaces and electric furnaces used for non-ferrous metal smelting, calcium-free silica bricks can be used as lining materials for furnace tops, furnace walls and other parts;
Other industrial kilns: in industrial kilns such as ceramics and refractory materials, calcium-free silica bricks are selected as refractory materials for some key parts;

Physical and Chemical Index

SiO2(%)	≥98.5
Al2O3(%)	≤0.3
Fe2O3(%)	≤0.1
CaO(%)	≤0.1
Apparent Porosity(%)	≤15
Bulk Density(g/cm3)	≥1.85
Cold Crushing Strength (Mpa)	≥40
Softening temperature under load	≥1690
Thermal shock stability (1100℃Water Cooling)(times)	>30
Thermal expansion rate	≤0.2

Company Profile

About Lianxin

Zhengzhou Lianxin High Temperature Advanced Materials Co., Ltd is a modern R&D-centered refractories manufacturing enterprise integrated with refractories sales and marketing, furnace engineering construction, recycling and sales of waste refractories as well as refractory raw material, technology and goods import and export, and technical services. Well-equipped and technologically advanced, ISO/QHSE-certified management underpins a product line of ordinary, medium and high-grade magnesia series brick, magnesia-chrome brick, magnesia-alumina spinel brick, magnesia-alumina- chrome basic brick, lightweight brick, clay brick, high alumina brick, corundum brick, silicon carbide brick and insulation materials, monolithic castable, ramming mix, plastic, etc. We manufacture more than 70 categories of refractory bricks with more than a thousand specifications and models, which are widely used in high-temperature kiln/furnace, non-ferrous metallurgical smelter, cement lime rotary kiln, glass-melting furnace, electric power, petrochemical hazard waste incinerator etc.

Factory Show

As a 20 refractory manufacturer, we have our own factory, professional machinery and equipments, strong technical team, complete delivery process, perfect after-sales service.

Test Equipment

We have innovative technology and advanced experimental equipment to ensure that every product has the best quality and we are responsible for every customer.

Production Line

As a refractory manufacturer for more than 20 years, we have a complete product production line, ensuring that every step is carried out strictly in accordance with the procedures.

Production Process

We have a complete production process, from raw materials to molding, and then to finished products. Each step is operated and inspected by dedicated personnel to ensure the high quality of the products.

Quality Control

After the refractory bricks are manufactured, we need to undergo professional testing and inspection to ensure that each high-quality refractory brick is delivered to the customer, so that the customer can rest assured.

Packaging & Shipping

Our refractory bricks are delivered to customers in the shortest possible time by land, sea or air.

Company Advantages

Customer Cases

As a world-renowned exporter, we have expanded our business scope to the world, providing high quality firebricks to customers worldwide. We have gained loyal customers all over the world, reached cooperation again and again, and become the first choice of global customers.

Company Certification

We are a reliable manufacturer and supplier of refractory bricks, with a number of certificates and patents to protect your kiln, and our professional team of experienced engineers and technicians are committed to providing you with excellent service.

Cooperation Partners

As a refractory source manufacturer for 20 years, we use the best materials and the most cutting-edge technology to carefully make firebricks, our firebricks have all kinds of types to meet various application needs, has won many reliable cooperation partners.

Questions & Answers

Q1: Could I get a sample before placing an order?
A1: Yes. A sample as per your requirement can be prepared for approval.

Q2:How can I get your prompt quotation?

A2:We can give you reply with quotation quickly if you kindly send the inquiry with following factors: dimension (length*width*thickness), service temperature, application and quantity.

We’d be appreciated if you can also provide the density and content.

Q3: Do you have stocks?
A3: Yes, but only for regular size.

Q4: How do you deliver my orders?
A4: Our experts can recommend you the suitable way based on the quantity and your budget. Normally ,it is by sea.

Q5: I am a big buyer, can I get a competitive price?
A5: Yes, you will get our lowest price without quality compromise along with our professional service.As we are working with mainly players in Europe, Asia, America and Afraic.

Q6: What is your quality control?
A6: 1.Chemical inspection is performed during Raw material, production and finished products.
2.Physical test is performed for finished products.

Q7: Are you a manufacture or trader?

A7: We are truly a manufacturer, we not only can provide the high quality products with the best price, but also can offer the best pre-sale service and after-service.

Q8: Do you accept size and shape customization? Are the specifications accurate?

A8: Yes! We have a professional R&D team, and advanced QC inspection equipments to ensure the accurate size and shape for you.

Calcium-free Silica Brick