Description for Silica Insulation 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.
Silica Insulation Bricks Properties
- Good thermal conductivity
- Strong high temperature mechanical strength
- High temperature stable volume change
- Small residual swell
- Strong acid-resistant slag erosion
- Light weight and Eco friendly
- Good thermal shock resistance
Silica Insulation Bricks Specification
Silica Insulation Bricks |
Item/Index |
KY-0.8 |
KY-1.0 |
KY-1.1 |
KY-1.15 |
KY-1.2 |
SiO2 % |
≥88 |
≥91 |
≥91 |
≥91 |
≥91 |
Bulk Density g/cm3 |
≤0.85 |
≤1.00 |
≤1.10 |
≤1.15 |
≤1.20 |
Cold Crushing Strength Mpa |
≥1.0 |
≥2.0 |
≥3.0 |
≥5.0 |
≥5.0 |
Thermal Conductivity (W/MK) 350ºC |
0.55 |
0.55 |
0.60 |
0.65 |
0.70 |
Permanent Linear Change On Reheating (%) 1450ºC*2h |
0~+0.5 |
0~+0.5 |
0~+0.5 |
0~+0.5 |
0~+0.5 |
0.2Mpa Refractoriness Under Load T0.6ºC |
≥1400 |
≥1420 |
≥1460 |
≥1500 |
≥1520 |
20~1000ºC Thermal Expansion 10.6/ºC |
1.3 |
1.3 |
1.3 |
1.3 |
1.3 |
Why choose us?
Zhengzhou Kaiyuan Refractories Co., Ltd is a manufacturer of silicon-aluminum refractory (fireclay brick, high alumina brick, silica brick, mullite brick, corundum brick, insulation brick, castable, mortar) for coke oven, blast furnace, hot blast stove, heating furnace, anode baking furnace, boilers and other industrial furnaces for 20 years located in Henan, China.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center
Contract Kiln Construction
Certificates
FAQ
1. Are you a Manufacturer or trader?
A: We are manufacturer and our plant is located in Xinmi city, Henan, China
2. Can we visit your company?
A: You are warmly welcome to visit our company at anytime, you'll not regret of the visiting.
3. Do you accept OEM?
A: Yes, we do OEM.
4. What's the MOQ of trial order?
A: We care about all the potential customers and take all the trails orders.
5. What is the payment term?
A: TT, LC, DP, DA.
6. How long is the delivery time?
A: Usually within 35 days after down payment.
7. Do you accept third party inspection ?
A: Yes for sure, we accept the third party inspection before delivery.
8. What is your after-sell service?
A: The rejected goods can be replaced or we can make compensation for it. We can send technical engineers to the end user for technical issue.
9.What is your company's certification?
A: ISO9001 certificate