Andalusite Nozzle Refractory Brick for Steel Industry
The Description:
The block is a kind of refractory brick built on the bottom of the steel drum to fix the water brick. Its shape is square, so it is also called square brick. The brick is the role of fixing the position of the water outlet; Easy to disassemble and install water nozzle; Support the lower end of the stopper when pouring; When pouring, make sure that the stopper slides along the arc to the water nozzle, and then cut off the flow. The brick material can be divided into clay, high aluminum or non-burning high aluminum.
The Physical and Chemcial Index of 80%AL2O3 Nozzle Refractory Brick for Steel Industry
| Item |
DL-80 |
DL-75 |
BDL-80 |
BDL-75 |
BDL-83 |
BDL-75 |
| Al2O3 % |
80 |
75 |
80 |
75 |
83 |
85 |
| Fe2O3 ≤ |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
| Apparent porosity % ≤ |
19 |
19 |
18 |
18 |
17 |
17 |
| Density kg/m3 |
2.7 |
2.6 |
2.8 |
2.7 |
2.85 |
2.9 |
| P.L.C % |
0.2 |
0.4 |
0.2 |
0.4 |
0.2 |
0.2 |
| CCS Mpa |
70 |
60 |
60 |
55 |
70 |
80 |
| RUL ºC ≥ |
1540 |
1520 |
1550 |
1530 |
1550 |
1560 |
Product feature:
1, high temperature erosion resistance
The refining ladle is very strict in terms of temperature and time, and the highest temperature often reaches more than 1750 ° C. During refining operation, the alkalinity of molten slag has a great influence on the life of refractory. The basicity of ladle refining slag varies in the range of 0.6 ~ 0.4, so the refractories are eroded by acidic slag and alkaline slag with strong permeability at high temperature, and the damage rate is fast.
2, high temperature wear resistance
Various ladle refining methods have adopted forced stirring, which is very serious to the high temperature wear of the brick.
3. Spalling resistance
Because it is intermittent operation, the temperature change will be very large, easy to produce heat spalling and structural spalling, and the use conditions are very harsh. At present, there is a big gap between the performance of the ladle breathable brick seat and the performance it should have, such as in the aspects of high temperature erosion resistance and stripping resistance, especially the stripping resistance needs to be improved
Company main products and profile:
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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