OEM Annec Insulating Alumina Silica Refractory Brick Acid Resistant
Description for Silica Insulating Bricks
Silica Insulation Bricks are produced with silica through adding inflammable substances such as coke, anthracite coal, sawdust, and carbonized rice husk, or foaming agents to form porous structure. Generally add 35-45% anthracite coal or 30% coke as inflammable substances. Since there are Fe2O3 and Al2O3 in the ash of coke and anthracite coal, there is no need to add iron scales. Silica Insulation Brick’s main mineral composition includes 78%~86% tridymite, 13%~15% cristobalite and 4%~7% quartz. Its cold crushing strength is 2.0-5.9MPa, thermal conductivity is 0.35-0.42W/(m•K) and density is 0.9-1.1g/cm3.
Physical and Chemical Index of Light weight Silica Bricks
| Silica Insulating Brick | ||||
| Item | PSB | |||
| SiO2(%) | ≥90 | |||
| Expansion, 1000℃ | 1.1~1.3 | |||
| Refractoriness Under Load,0.1MPa(℃) | ≥1500 | |||
| Bulk Density (g/cm3) | ≤1.15 | |||
| Cold Crushing Strength (MPa) | ≥5.0 | |||
| Permanent Linear Change(%) | ±0.5 | |||
| Thermal conductivity(350±25)℃ (W/mK) | ≤0.65 | |||
Silica insulating bricks Properties
1. Good thermal conductivity;
2. Strong high temperature mechanical strength;
3. High temperature stable volume change;
4. Small residual swell;
5. Strong acid-resistant slag erosion;
6. Light weight and Eco friendly;
7. Good thermal shock resistance;
More information about us
Q1.Are you Manufacturer?
A:Yes, of course, our factory is in Xinmi,zhengzhou city,Henan province.
Q2.Can we visit your company?
A:Sure,welcome at any time,seeing is believing.
Q3.Do you accept OEM?
A:Yes, we can do OEM.
Q4.What's the MOQ of trial order?
A:No limit,We can offer the best suggestions and solutions according to your condition.
Q5.What are the payment terms?
A:Usually T/T,but L/C,Western Union etc are available for us.
Q6.How long is delivery time?
A:The delivery time usually depends on the order quantity, usually around 7-12 days.
Q7.How are your products' quality?
A:The products will be strictly inspected before shipment, so the quality could be guaranteed.
Q8.How to solve the quality problems?
Q9.What is the service life of your bricks?
A:The service life of different bricks is unlike.It also depends on your using condition and method.
Q10.How about your company's certification?
A:ISO9001 and Test Report,also we could apply other necessary certification
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.