$High Alumina Brick - High Quality Best Price Insulated Refractory Fire Bricks System 1$
$High Alumina Brick - High Quality Best Price Insulated Refractory Fire Bricks System 2$

$High Alumina Brick - High Quality Best Price Insulated Refractory Fire Bricks$

$High Alumina Brick - High Quality Best Price Insulated Refractory Fire Bricks System 1$

$High Alumina Brick - High Quality Best Price Insulated Refractory Fire Bricks System 2$

High Alumina Brick - High Quality Best Price Insulated Refractory Fire Bricks

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 2000 pc

Supply Capability:: 8000000 pc/month

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Quick Details

Place of Origin:	Shaanxi, China (Mainland)	Shape:	Brick	Material:	Alumina Cement
SiO2 Content (%):	0.1~1.4%	Al2O3 Content (%):	48%-85%	MgO Content (%):	0.1~1.4%
CaO Content (%):	0.01	Refractoriness (Degree):	1770°< Refractoriness< 2000°	CrO Content (%):	0.1~0.3%
SiC Content (%):	0.1~1.4%	Model Number:	DFL-LZ	Brand Name:	CNBM
size:	LZ-85, 80, 70, 65, 55, 48	apparent porosity:	23% Max	refractoriness:	1750℃ Min
refractoriness under load:	1420℃ Min	cold crashing strength:	35 MPa Min	Al2O3:	48% Min
thermal shock resistence:	4-10	reheating linear change:	1450℃x2 +0.1 -0.4	experience:	over than 15 years
quality system:	ISO9001-2008

Packaging & Delivery

Packaging Details:	in pallet for sea ship
Delivery Detail:	15-45 days after get customers's deposit

High alumina bricks

description

Specifications of high alumina bricks

1. AL2O3 : 45%-80%.
2. Can according to customers' requirements.
3. Used for steel ladle lining.

High alumina steel ladle fire brick,Steel ladle brick,Ladle brick

$High Quality Best Price High Alumina Insulated Refractory Fire Bricks$

Application of high alumina bricks

High alumina brick is widely used for Widely used in blast furnaces, Hot Blast Stove, Steel ladle lining, Reheating furnace, Cement kiln,Tunnel kiln,boiler, coke oven, carbon furnace,glass kiln , Steel smelting furnace and various kiln lining and thermal technical equipment, etc.

Features of high alumina bricks

1) High-temperature endurable .

2) Good thermal shock resistance .

3) Good resistance to abrasion and corrosion.

4) Good thermal shock and thermal spalling resistance.

5) High mechanical strength.

6) Good volume stability at high temperature.

Physical and chemical index of high alumina bricks

Item		Specification
Item		LZ-85	LZ-80	LZ-75	LZ-65	LZ-55	LZ-48
Al2O3		85	80	75	65	55	48
Apparent density		23	22	23	23	22	22
Cold crushing strength		65	55	50	45	40	35
RUL		1600	1530	1520	1500	1450	1420
PLC	1500.C*2h	0.1~-0.4
PLC	1450.C*2h						0.1~-0.4
Standards of Type Brick:		230mmx114mmx65mm 230mmx114mmx75mm Product Range: SK32,SK34,SK35,SK36,SK37,SK38

Specail Shape of High Alumina Brick

$High Quality Best Price High Alumina Insulated Refractory Fire Bricks$

Q:What should be used as binder for making high alumina bricks?: Bond for making high alumina brick: soft clay has good plasticity, so the high alumina brick is usually made of soft clay as bond. However, the free Al2O3 free SiO2 and bauxite clinker clay in under 1200 degrees occurred two times of Mullization reaction, generate large volume expansion, silicon porosity, strength reduction. Therefore, the amount of clay powder in the ingredient should be no more than 5%.

Q:What is the standard classification of high alumina bricks and high alumina bricks?: Refractory brick is non-metallic materials can be classified according to a kind of inorganic material, high aluminum brick, clay brick, magnesia brick, corundum brick, mullite bricks, silicon carbide materials such as brick, high alumina brick is used as a relatively wide range of products in accordance with the refractory brick high alumina refractory materials by high aluminum brick is generally divided into Al2O3 content three: I - II - >75% Al2O3 content; the content of Al2O3 is 60 ~ 75%; III - Al2O3 content from 48 to 60%.

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:How to reduce the harm caused by two times mullite in high alumina refractory material: Prolong the sintering time and adjust the aluminum content of the high alumina brick.

Q:Refractory brick, high alumina brick, magnesia chrome brick, magnesia brick, clay brick, which type of high temperature refractory brick?: The super high alumina brick in high alumina refractory brick has the highest refractoriness, and the corresponding production cost is higher.

Q:Use of high alumina refractory bricks?: Because of the high Al2O3 high aluminum products, low impurity content, the formation of fusible vitreous body less so than the clay brick high load softening temperature, but because mullite crystallization has not formed the network organization, so the load softening temperature is not high silica brick.

Q:What's the difference between a well type annealing furnace and a box type annealing furnace?: Box annealing furnace application: mainly used for quenching, normalizing, annealing and other conventional heat treatment equipment for steel parts. Features: 1, electric loading, high productivity, heat treatment is especially suitable for small and medium-sized parts, such as 30%, uniform temperature, intelligent digital display meter PID (pictured) automatic temperature control, high precision; 2, electric discharge loading convenient, as good; 3, door and seal the oven body is sealed automatically, without manual seal; 4, equipped with electric interlock protection device, and can prevent the fault accident due to the error. Bell type annealing furnace four bell type annealing furnace bell type annealing furnace is mainly used for annealing sheet metal in natural atmosphere and normalizing treatment of steel parts. 1, special steel, precision alloy large all fiber trolley type resistance furnace, strip, wire bright annealing. 2 、 annealing of special steel casting and forging. 3. Annealing of silicon steel sheet. 4, metal and non metal powder sintering pieces etc..

Q:What are the requirements for refractory materials in heat treatment furnace?: Fire resistance is an important performance index of refractory materials, but it does not represent the highest temperature in actual use of refractory materials. In actual use, refractories also bear certain pressure, therefore, must consider the high strength at high temperature refractory material, which is in high temperature under certain pressure without deformation, such as the NZ-40 refractory refractory degree up to 1730 DEG C, but the maximum temperature is only 1350 degrees celsius.

Q:How are the high alumina bricks fired?: According to the quality requirements of different grades of high alumina brick, choose different grades of bauxite raw materials, it is conducive to rational use, fine materials, fine distribution, as far as possible not to use mixed grade severe raw materials. The quality of the clinker depends on the calcination temperature, calcination temperature, sintering temperature should be generally reached or slightly higher than that of alumina clinker sintering, to ensure the full and possible high volume density, and the two secondary Mullitization and sintering shrinkage effect in calcination process. Lightweight high alumina brick, also known as high aluminum insulation brick (high-aluminium heat insulating brick). A lightweight refractory consisting of mullite and glass phases or corundum in excess of 48%. The volume density is 0.4 ~ 1.35g/cm3. The porosity is 66% ~ 73%, and the compressive strength is 1 ~ 8MPa. Better thermal shock resistance.

Q:What is the difference between high alumina brick and clay brick?: Light clay brick, refractory material is a kind of high porosity, low density, low thermal conductivity of refractory material, refractory materials called lightweight refractories, it includes insulating refractory products, refractory fiber and refractory fiber products. Heat insulation refractory material is characterized by high porosity, general 40%-85%, low volume density, lower than 1.5g/cm3, low thermal conductivity, generally lower than 1.0W (m.K). The utility model has the function of heat insulation of an industrial furnace, and can reduce the heat dissipation loss of the kiln, save energy, and can reduce the quality of the thermal engineering equipment. The mechanical strength, wear resistance and slag resistance of insulating refractory material are poor, and it is not suitable for the load-bearing structure of kiln and direct contact with slag, burden, molten metal and other parts.

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