Special Mullite Castables for Inlet of Back Kilneye Amorphous Refractory

• Refractoriness (℃): 1770< Refractoriness< 2000
• Feature: Long Time Materials
• Type: Refractory Material
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: KYML
• Shape: Powder
• Material: Mullite
• Color: Grey
• Application: Grate Cooler
• Shelf Life Min: 6 Months
• Transport Package: in 25kg/Bag Loaced on Fumigated Wooden Pallets
• Specification: AL2O3: 70%
• Trademark: KAIYUAN
• Origin: China
• HS Code: 38160000
• Production Capacity: 2000 Tons/Month
• Package Size: 1000.00cm * 1000.00cm * 800.00cm
• Package Gross Weight: 1800.000kg

Product Description

Special Mullite Castables for Inlet of Back Kilneye Amorphous Refractory
The decription:
Mullite castable is a high-function castable made from high-quality mullite aggregate, fine powder and additives. It has the advantages of good thermal shock stability, low creep rate, small thermal expansion and strong chemical corrosion resistance. Mainly used in cement kiln cover, three air pipe head cooling machine and other parts.
The Physical and Chemical Technial Index of Special Mullite Castables for Inlet of Back Kilneye Unshape Refractory

Brand                Items		High Alumina	Mulllite	Corundum
		KYSL-16C	KYSL-16M	KYSL-17C
Al2O3 %  ≥		65	70	85
Bulk Density kg/m3	110ºC*24h	2.5	2.6	2.8
MOR Mpa ≥	110ºC*24h	10	11	12
	1400ºC*3h	12	13	14
CCS Mpa ≥	110ºC*24h	80	90	100
	1400ºC*3h	90	90	100
P.L.C%	1400ºC*3h	±0.5	±0.5	±0.5
Recommended application part		Rear ourlet,kiln hood,rear end of cooler	grate cooler,kiln Bood,tertiary duct	front kilneye of large cement kiln,coal burner

The feature:

Fundamental characteristics of high strength mullite castable

(1) High thermal strength. Using high-quality synthetic mullite material with high purity and low impurities, the matrix composition is strictly controlled to form mullite network skeleton structure, improve the thermal strength of castable, enhance the anti-fall function of castable, and extend the service life.

(2) Good thermal shock stability. Because the linear expansion coefficient of mullite is only about 5.7×10-6/ºC, the volume stability is good, and the thermal shock stability is good. Mullite is a rod-like crystal with various thermal expansion properties, so that a large number of micro-cracks are formed in the castable during the sintering process, which improves the toughness of castable, buffers the thermal stress and stops the expansion of cracks.

(3) The construction function is good. Because the castable contains small particle size powder, it is easy to fill the gap that the general fine powder is not easy to fill. When mixed with water, the surface of the micro-powder particles has electrostatic exclusion effect, which promotes the relaxation of the particles, and forms a slurry with the fine powder, which is dispersed between the aggregate particles and reduces the friction between the aggregate particles. Therefore, the castable flow is good, easy to effectively control the amount of water added. At the same time, the fine powder has a high appearance ability, which can make the surface of the particle absorb a certain amount of water, reduce the amount of free water in the castable, promote the condensation of the castable, and make the initial condensation time of the castable shorter. Generally speaking, only about 20 minutes is enough to harden the appearance of the castable, which can effectively ensure the continuity of the pouring construction. In addition, the amount of cement is less and the water requirement of cement hydration is less, which is also an important reason for improving the flow of castable.

Therefore, the high-strength mullite castable has high heat shock resistance and structural fall off resistance, good thermal shock stability, high soft point, low creep value at high temperature, high hardness and good chemical corrosion resistance.
Company Main Products and Profiles:

 

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