$High Alumina Brick for Kiln Refractory Fire Bricks$

$High Alumina Brick for Kiln Refractory Fire Bricks System 1$

$High Alumina Brick for Kiln Refractory Fire Bricks System 2$

High Alumina Brick for Kiln Refractory Fire Bricks

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Products	High Alumina refractory firebricks for furnaces and Kilns
Applications	furnaces and Kilns
Features	1,Good performance of anti alkali erosion resulted from raw material and fuel
	2,Good thermal shock resistance
	3,High mechanical resistance
	4,Low porosity
	5,low thermal conductivity

Technical Data

Index Products		Spalling Resistant High Alumina Bricks
Al2O3	%	≥70
Fe2o3	%	/
Bulk Density	g/cm3	≥2.5
Apparent Porosity	%	≥23
Refractoriness under Load(0.2MPa)	℃	≥1470
Cold Crushing Strength	Mpa	≥70
Thermal Shock(1100℃,water cooling)	times	≥25

Apperance Control Item	Method	Sampling Size	Specification
1,Crack	Visual Check	100%	Crack Width<0.5mm< span=""> Crack length<20mm< span="">
2,Chip,Lost corner	Visual Check	100%	A+B+C<30mm< span="">
3,Lamination	Visual Check	100%	No Lamination
4,Spot	Visual Check	100%	A+B<10mm< span=""> Or <3spot/piece
5,Fin	Visual Check	100%	No Fin
Size &Dimension
1,Shape	ASTM C134	Follow ISO5022	Conform to drawing
2,Dimension	ASTM C134	Follow ISO5022	As size tolerance in drawing For General Brick << span="">100mm drawing±1.5mm >100mm drawing±1.5% For Sk38 Brick All side:drawing ±1mm For Rotary Kiln Brick L,a,b:drawing±1.0mm H:drawing±2.0mm
3,Squareness	ASTM C134	Follow ISO5022	<< span="">100mm drawing±1.0mm >100mm drawing±1.0%
4, Warpage	ASTM C134	Follow ISO5022	For General Brick << span="">0.4%from diagonal line For Basic Brick used in Rotary Kiln << span="">0.2%from diagonal line
5,Slope	ASTM C134	Follow ISO5022	Drawing ±1mm
6,Taper	ASTM C134	Follow ISO5022	<< span="">1.5mm

$High Alumina refractory fire bricks for kilns$

Q: In 2016, a few of the traditional refractory materials will be able to survive: The other is in large enterprises and individual has the unique advantage of the small enterprises, with independent technology system, production equipment advanced, there are certain funds set up to deal with risk, timely reform, such enterprises compared to a few years ago the productivity and sales or have declined, but overall is still in the stage of production increased steadily.

Q: Introduction of high alumina brick: Made from alumina or other raw materials of high alumina content; formed and calcined. High thermal stability, fire resistance above 1770. Slag resistance is good, used for masonry steel smelting furnace, glass furnace, cement rotary furnace lining.

Q: What are the grades of high alumina bricks?: According to the size of high aluminum brick is divided into: standard brick, special-shaped brick.

Q: What is the price of the latest thermal insulation material?: There are many kinds of insulation materials, and the price will fluctuate with the market. Small quantities of inquiry or procurement, then go directly to the local thermal insulation market, a wide variety of prices are basically the market price.

Q: What are the specific raw materials for plastic pallets?: With excellent mechanical properties, its strength and elasticity are higher than HDPE, and it has good flexural fatigue resistance. It has good heat resistance and good chemical stability. Besides being concentrated by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to other chemical reagents. The high frequency insulation performance of polypropylene is excellent because of its almost no water absorption, so the insulation performance is not affected by temperature.

Q: What is the content of free silica in the refractory bricks of high alumina bricks?: In the meantime, the free silica content of silicon brick is as high as 90% above. Therefore, the most serious damage is silicon brick, followed by clay brick, high alumina brick, magnesia brick and so on.

Q: Which is better, the soft core or the hard core?: The use of each of the single core copper wire with low line, 1.5 square with cap line home, socket 2.5 square, air conditioning to walk alone line 4 square can, when the terminal box into a socket with leakage protection switch, prevent overload and short circuit.

Q: What are the requirements for refractory materials in heat treatment furnace?: The structural strength of high temperature is evaluated by loading softening point. Load softening point is that under certain pressure (2 kg/ cm 2 = 0.2MPa) under the condition of heating rate to heating, measured the sample deformation (deformation for the original sample 0.6%) temperature. This temperature is called the softening point of the refractory. Sample size is Phi 36 x 50mm.

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: High alumina brick 80 with which high aluminum cement?: Which kind should be chosen should be determined according to the conditions of use, life expectancy and cost control. By the way, the quality of masonry is also very influential.

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