Castable for Circulating Fluidized Bed Boiler
The description:
Unshaped refractory is an inorganic non-metallic material with a refractories of not less than 1580, and castable is the fastest developing amorphous refractory and the most widely used amorphous refractory. What is the composition of castable that develops so fast? And what role does such a popular castable play in a CFB boiler?
Castable is an amorphous refractory material composed of refractory aggregate, powder, binder and admixture, and castable can be prepared into an ideal refractory material for boiler lining construction according to the situation and the part used.
The Physical and Chemical Technial Index :
Item |
NGJ-16 |
NGJ-15 |
NGJ-145 |
NGJ-145 |
NGJ-135 |
Service temperature ºC |
1600 |
1500 |
1450 |
1450 |
1350 |
Al2O3 % ≥ |
90 |
80 |
75 |
40 |
65 |
SIC % ≥ |
-- |
-- |
-- |
45 |
-- |
BD g/cm3 110ºC*24h ≥ |
3.1 |
3 |
2.7 |
2.6 |
2.4 |
MOR Mpa ≥ |
110ºC*24h |
11 |
10 |
7 |
9 |
6 |
ºC*3h |
1600/13 |
1500/12 |
1450/8 |
1450/12 |
1350/7 |
CCS Mpa ≥ |
110ºC*24h |
80 |
70 |
60 |
65 |
55 |
ºC*3h |
1600/95 |
1500/90 |
1450/80 |
1450/90 |
1350/65 |
PLC% ºC*3h |
1600-0.5 |
1500-0.5 |
1450-0.5 |
1450-0.58 |
1350-0.5 |
Thermal conductivity W/m.k |
1.3 |
1.3 |
1.2 |
1.2 |
1.1 |
The Advantage:
The performance of such a widely used castable should be high refractoriness, high simple weight softening temperature, good high temperature volume stability and thermal shock resistance, certain wear resistance and excellent slag resistance. In addition, it is also required to have a regular shape and accurate size. For castables used in some special fields, they are also required to have special properties such as air permeability, thermal conductivity, electrical conductivity and so on. However, so far, there is no refractory that can meet all the above performance requirements at the same time, so when using refractory materials, it is necessary to choose according to the conditions of use.
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