High Quality Refractory Castable for Circulating Fluidized Bed Boiler in Electrice Indurstry
The Description:
1. High aluminum refractory castable: high aluminum refractory castable has high refractoriness and erosion resistance, and is suitable for the furnace, flue and other parts of circulating fluidized bed boilers. In addition, it also has good thermal shock resistance and can adapt to the temperature change during boiler startup and shutdown.
2. Corundum refractory castable: Corundum refractory castable has high wear resistance and erosion resistance, especially suitable for high temperature areas in the furnace. Its high temperature stability is good, can withstand the high temperature environment in the furnace, to ensure the long-term stable operation of the boiler.
3. Silica refractory castable: silica refractory castable has good thermal shock resistance and wear resistance, suitable for circulating fluidized bed boiler flue, ash hopper and other parts. It also has good chemical erosion resistance and can resist corrosive substances in smoke.
The physical and chemcial of High Quality Refractory Castable For Circulating Fluidized Bed Boiler
| Items |
NGJ-16 |
NGJ-15 |
NGJ-145 |
NGJ-145 |
NGJ-135 |
| Sevice temperature |
1600 |
1500 |
1450 |
1450 |
1350 |
| Al2O3 % ≥ |
90 |
80 |
75 |
40 |
65 |
| SIC % ≤ |
6-8 |
--- |
|
45 |
|
| Bulk Density g/cm3 |
3.1 |
3 |
2.7 |
2.6 |
2.4 |
| MOR Mpa ≥ |
110ºC*24h |
11 |
10 |
7 |
9 |
6 |
| 110ºC*3h |
13 |
12 |
8 |
12 |
7 |
| CCS Mpa |
110ºC*24h |
80 |
70 |
60 |
65 |
55 |
| 110ºC*3h |
95 |
90 |
80 |
90 |
65 |
| PLC ºC*3h |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
| Thermal conductivity(350+25ºC) |
1.3 |
1.3 |
1.2 |
1.2 |
1.1 |
Application:
For boiler castables, under different working conditions and material selection standards, corundum wear-resistant plastics should be selected for the anti-wear layer at the outlet and lower part of the furnace where the boiler temperature is the highest and the wear is the most intense; high-aluminum and high-strength wear-resistant castables should be selected for the flue section at the inlet of the cyclone separator; lightweight insulation bricks should be used for the interior of the separator cylinder and cone; high-aluminum and high-strength wear-resistant castables should be selected for the exterior. Phosphate refractory concrete is required in the air distribution device, ignition air duct and furnace door, and light insulation brick and firebrick can be used in the tail area.
The feature:
(1) The load softening temperature is higher than that of the same level refractory brick.
(2) Small expansion coefficient, not easy to crack
(3) cold and heat resistance is good, and the number of cold and heat exchange can be more than 15 times.
(4) The overall performance is better than fire-resistant masonry.
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
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
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