NT-26 Light Weight Insulating Firebrick for industrial oven

NT-26 Light Weight Insulating Firebrick for industrial oven

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 1000 pc

Supply Capability:: 1000000 pc/month

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Quick Details

Place of Origin:	Shandong, China (Mainland)	Shape:	Brick	Material:	Mullite
SiO2 Content (%):	50%~65%	Al2O3 Content (%):	54%	MgO Content (%):	0.8-1.2
CaO Content (%):	0.01	CrO Content (%):	0.1~0.3%	SiC Content (%):	1.2-1.4
Model Number:	NT-26	Brand Name:	CNBM	color:	white
Dimension:	23011465 mm	Density:	800kg/m3

Packaging & Delivery

Packaging Details:

carton+pallet/pallet

Introduction

NATI Insulating Firebrick own light weight, with mini-pore equally distributed, compared with common firebricks, so NATI IFB keep furnace wall low heat loss and save the cost of fuels, NATI IFB also means lower heat storage, heating and cooling more fast, easy for discontinuous operation. NATI IFB is suitable among the range 900℃~1650℃.

Characteristics

*Low thermal conductivity

*Low impurity content

*High strength

*Excellent resistance to thermal shock

*Resistance to erosion

*High accuracy of dimension

Typical Application

*Lining for hot-surface of industrial furnaces, such as carbon furnace, cracking heater, heating furnace for oil refining, annealing furnace, roller kiln, tunnel kilns etc

*Back-up lining of industrial furnaces, such as glass tank kiln

*Deoxidizing atmosphere furnace

Physical & Chemical Data

Description		NT-23	NT-26	NT-28	NT-30	NT-32
Classification temperature (℃)		1300	1400	1500	1550	1600
Density (kg/ m3)		650	800	900	1000	1100
Rupture Strength (Mpa)		0.8	1.2	1.4	1.6	1.8
Thermal conductivity rate W/m.k		0.15	0.26	0.33	0.38	0.42
Pressure strength (ASTM C93,Mpa)		1.1	1.8	2.5	2.8	3.0
Shrinkage after heavy firing at (℃×8h)(%) JIS R26		0.3 (1230)	0.4 (1300)	0.6 (1500)	0.6 (1550)	0.6 (1600)
Chemical composition(%)	AI2O3	40	54	62	74	80
Chemical composition(%)	Fe2O3	1.2	0.9	0.8	0.7	0.5
Matching refractory mortar		NT-1300 mortar	NT-1400 mortar	NT-1500 mortar	NT-1500 mortar	NT-1600 mortar

Q:Application characteristics of high alumina brick: Load softening temperature. The softening temperature of high alumina brick products decreases with the increase of silica and alkali metal oxide content, but is higher than that of clay brick products, which is about 1420 - 1530 degrees centigrade. Al2O3. The softening temperature of corundum brick with content greater than 95% can reach above 1600 DEG C.

Q:What is the content of free silica in the refractory bricks of high alumina bricks?: Refractory powders are not rich in free silica in varying degrees

Q:What are the characteristics of high alumina bricks?: High thermal stability, fire resistance above 1770. Slag resistance is good, used for masonry steel smelting furnace, glass furnace, cement rotary furnace lining. High R.U.L, low creep high alumina brick with high grade bauxite, fused corundum, fused mullite as main raw material of high-grade refractory materials.

Q:What are the reasons for the decline in the performance of high alumina bricks when we use high alumina refractory bricks?: The brick Pei boring and time. 6, Pei brick kiln installed between the brick and the brick Pei order, Pei and kiln top, kiln wall gap etc.. 7, high alumina brick kiln plan, and the lack of edges and corners of the scene should be avoided.

Q:What refractory material does cupola lining use?: A class of inorganic nonmetallic materials with a refractoriness of not less than 1580 degrees. Refractoriness is defined as the temperature of a sample of a refractory cone sample that resists high temperature without loading and does not soften and melt down. But only in terms of fire resistance can not be fully described refractories, 1580 degrees of temperature is not absolute.

Q:Which thermal shock stability of clay brick and high alumina brick is good?: The product has the advantages of high temperature, little creep, strong corrosion resistance and good thermal shock resistance, and is suitable for large and medium-sized hot blast stoves.Thermal shock stability is much better than clay brick.

Q:The difference between clay bricks and clay bricks: According to the hole rate: solid brick (no hole or hole rate less than 25% bricks), porous brick (hole rate is equal to or greater than 25%), the size of the hole is small and the number of bricks, usually used in load-bearing parts, higher strength level. Hollow brick (hole rate equal to or greater than 40%, large pore size and small amount of brick, commonly used in non load parts, low strength grade).Solid bricks and porous bricks are mostly used for load-bearing structural walls. Hollow bricks are mostly used in non load bearing structures.

Q:What are the alloy wear resistance materials?: Alloy wear-resistant materials from different manufacturers different components in Beijing Naimo company as an example, the following alloy wear resistant material:1: Ni Cr alloy wear-resistant material2: chrome carbide wear-resistant material3: high manganese alloy wear-resistant material4: tungsten carbide alloy wear-resistant material5: nickel tungsten alloy wear-resistant material

Q:How high can aluminum bricks expand at 80O degrees of heat?: When an object is heated, the particle moves faster and thus occupies additional space. This phenomenon is called dilation.

Q:What are the high temperature refractory mortars made of?: Siliceous mud, mineral composition and chemical composition is similar with silica, excellent corrosion resistance, water glass slurry, drying shrinkage, but also can be used for bonding fiber products, sealing furnace wall.

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