Unshape Fused Mullite Refractory with Good Thermal Shock Resistance for Glass Furnace
The Description:
Refractory brick is the main component material of glass kiln, which has a decisive impact on glass quality, energy consumption and product cost. Glass narrow commonly used 5 kinds of firebrick:
1.AZS and high zirconia bricksAZS brick is mainly to improve the corrosion resistance and wear resistance of the production process, in addition to taking oxidation melting, so that the carbon content of the product is reduced to 0.005%, the glass phase precipitation temperature is increased to 1450ºC. The casting and annealing processes have also been improved, and high zirconia bricks with AZS.ZrO2 content above 90 with small or even no shrinkage holes have been produced.
2. Chromium bricks and chromium-containing bricks Compact chromium oxide bricks formed by isostatic pressing are used for the side walls, necks or other severely eroded parts of E glass and C glass pond kilns, with a life of 6 to 7 years.
3. Alkaline brick:High purity direct bonded alkaline brick fired at 1800ºC is mostly used for regenerator wall and arch.
4. Olivine bonded phase of olivine brick has particularly strong corrosion resistance, and the corrosion resistance of magnesium brick can be improved by increasing the content of magnesium olivine in the bonded phase of magnesium brick. To this end, 20 fine powder of magnesia olivine is added to the ingredients of magnesia brick to form a magnesia olivine binding matrix that can protect magnesia particles and reduce erosion. The price is relatively cheap, and it has been widely used in the middle of the glass kiln regenerator cell lattice body abroad.
5. Barium feldspar olivine brickIn view of olivine's good corrosion resistance and poor thermal shock resistance, the introduction of barium feldspar in its binding phase can significantly improve the heat shock resistance of bricks. Barium feldspar is formed during the firing process and is only present in the bonded matrix phase.
Physical and chemcial index of Unshape Fused Mullite Refractory with Good Thermal Shock Resistance for Glass Furnace
| Item Brand |
Unit |
CZM-20 |
| Al2O3 ≥ |
% |
72 |
| ZrO2 ≥ |
% |
19 |
| SiO2 ≤ |
% |
7 |
| Fe2O3 ≤ |
% |
0.2 |
| Bulk Density ≥ |
g/cm3 |
3.25 |
| Apparent porosity % ≤ |
% |
17 |
| Cold crushing strength ≥ |
Mpa |
100 |
| Thermal expansion%≤ |
% |
0.9 |
| Refractoriness under load ≥ |
ºC |
1700 |
Product feature:
High temperature resistance: The operating temperature of the glass kiln is usually very high, so the refractory brick must be able to withstand high temperatures. This usually means that they need to have a high melting point and high resistance to high temperatures.Corrosion resistance: Acidic and alkaline substances are involved in the production of glass, so refractory bricks need to be corrosion resistant and able to resist the corrosion of glass components on the brick.Thermal expansion matching: The temperature in the glass kiln can change significantly, so the refractory brick needs to have a thermal expansion coefficient that matches that of other materials to prevent cracks and damage.Compactness: Refractory bricks should have high compactness to reduce penetration and prevent melt from penetrating into the interior of the brick, thereby extending the service life of the brick.Mechanical strength: Firebricks need to be mechanically strong enough to withstand the pressures and mechanical stresses that may exist in the kiln.Good thermal conductivity: Good thermal conductivity helps to evenly distribute heat and improve the thermal efficiency of the glass kiln.Low water absorption: Low water absorption helps reduce the risk of bricks bursting during heating and cooling.Property: Firebricks should meet the relevant health and standards to ensure the property during the operation of the glass kiln.Easy processing: Refractory bricks should be easy to cut and process to accommodate different shapes and sizes of kilns.Wear resistance: Considering that there may be wear in the kiln, especially in the movement area of the material, the refractory brick should have a certain wear resistance.
Company main products and profies:
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
We have test equipment for the following items:
chemical %
bulk density
apparent porosity
cold crushing strength
modulus of rupture
refractoriness under load
creep
thermal expansion
Reheat linear change
thermal shock resistance
thermal conductivity
Contract Kiln Construction
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
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