High Alumina for Blast Furnaces

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Product Description:

项目
Item

GL-65  

GL-55

GL-48

Al2O3,%              不小于min

65

55

48

Fe2O3,%              不大于max

2.0

2.0

2.0

耐火度,℃            不低于
Refractoriness        min

1800

1780

1760

荷重软化开始温度,℃  不低于min

1500

1480

1450

重烧线变化,%         1500℃x2h
P.L.C                 1450℃x2h

0— -0.2

0— -0.2

0— -0.2

显气孔率,%           不大于
A.P                   max

19

19

18

常温耐压强度,        MPa不小于
CCS                   min  

58.8

49.0

49.0


Properties of products:High alumina bricks for furnaces were mainly made Yangquan Bauxite,being high pressure pressed and sintered in high temperature.Main minerals compositions are mullite and corundum phases.These products were widely used in all parts of furnace lining of their excellent physical/chemical properties in high temperature.



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Q:What is the color of the refractory brick to repair the same color as the 1400
Smash the same brick into fine powder
Q:Why can't build refractory brick behind the skew block?
refractory is heat expansion and cold contraction, it is also called refractory brick, can resist high temperature up to 580-770 degrees. Mainly used for the smelting furnace. faint yellow or brown, when it is high temperature, it will squeeze toward the center. Refractory material made of refractory clay or other refractory raw materials. the shortened form of fefractory brick is brick. vault will be extrusion deformation. Refractory material with a certain shape and size
Q:What is the heating temperature in the test method of thermal shock resistance of refractory bricks
1, quenching (air cooling or water cooling), after the completion of the specified number of times. 2, maintain 20min, introduce the following types briefly. 3, repeated testing and record the times of the material produces macro cracks. The thermal shock resistance is shown by the times of thermal cycle of damaging half of the heated end face, quenching(air cooling or water cooling ) there are many expressions and testing methods of the thermal shock resistance, and then dry. Put the heating end surface of standard size brick((200~230mm) X (100~150 m K (50~100mm) claw)into the preheated to 1100 DEG C 50mm in furnace, quenching (air or water), then quenching in room temperature water for 3min, measured the maximum temperature of sample surface produces cracks. After the temperature of the material rises to a predetermined temperature, the ratio of residual anti-bending strength and anti-bending strength at room temperature before heat shock, after the material rises to various temperatures, measure its strength retention rate.
Q:How to built refractory bricks as fitting between square and circle ducts
Build a big mushroom, and build the legs as square
Q:the refractory brick in glass furnace burner was burning, the bricks on both sides of the fire hole were burning the blocked it, what will cause brick burning?
The firebrick in glass melting furnace is mainly consisted of zircon brick, other ordinary refractory materials can not effectively prevent the erosion of glass solution. Because the glass melting liquid is eutectic mixture compared to the refractory bricks, it penetrates into the refractory brick and reduces its original performance, simply speaking, the glass melting liquid dissolves the refractory bricks as eutectic mixture .
Q:How to classify light refractory bricks?
Continuous casting use silicious insulation board, silica insulating refractory brick, ceramsite lightweight refractory concrete building block and so on. 0g/ clay lightweight heat insulating brick NGO.4-1.5g/, high aluminum lightweight heat insulating brickLGO.4-0.4-1.7G/, resistance furnace Diatomite brick 0; cm3; cm3; cm3, aluminum oxide insulating refractory products
Q:is it good to use firebricks to preserve the heat of rto furnace? Is there any other good ideas?
Operating noise is very low, having a very strong chemical stability: The thermal conductivity is lower than 0 at normal temperature, it not only reduced the cost of the project of RTO furnace, but keeps the indoor heat dissipation heat better and reduce noise pollution. the temperature of RTO furnace surface is low after using the ceramic fiber lining to keep the heat, thereby reducing the addition of auxiliary fuel : ceramic fiber has a good thermal shock resistance: The dosage form of HLGX-589 and HLGX-312 ceramic fiber material is shown in figure RTO furnace thermal insulation material. C, good thermal shock resistance, without reserving expansion joints, ensure the lining intact, not easy to be affected by the harsh combustion atmosphere inside the RTO furnace, can deal with the temperature changes caused by periodic replacement of RTO furnace inlet. The furnace is new energy-saving furnace developped recent 30years that used for eliminating harmful exhaust gas caused by steel or paint spraying. it has long service life, high chemical stability, no heat preservation precedent for refractory bricks; B, good heat insulation effect.
Q:How to deal with the red kiln in rotary kiln?
Q:What material does tile tunnel kiln use to replace the refractory brick to have better insulation effect and save the maintenance and prolong the service life?
Yes, but the cost is high, refractory material should be the most affordable at present.
Q:Refractory brick, high alumina brick, magnesia chrome brick, magnesia brick, clay brick, which type of brick has the highest refractory temperature?
It depends. if high alumina brick is used in kiln, its temperature is above 1700 degree, clay brick is between 1500 degree to 1750 degree, magnesia bricks and magnesia-chrome bricks are about 1500 degree to 1650 degree.

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