High Alumina Brick for Blast Furnace System 1

High Alumina Brick for Blast Furnace System 2

High Alumina Brick for Blast Furnace System 3

High Alumina Brick for Blast Furnace

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 2 m.t

Supply Capability:: 5000 m.t/month

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Brief discription for High Alumina Bricks for blast furnace

CMAX High Alumina Bricks for blast furnace are classified according to alumina content ranging from 48% to 90%.

CMAX High Alumina Bricks for blast furnace are commonly used in blast furnace, hot blast furnace, the roof of electric furnace, teeming ladle, rotary kiln,regenerator, etc.

Brief features for High Alumina Bricks for glass industry

◆Low thermal conductivity

◆Excellent acid and base slagging resistance

◆High refractoriness

◆Excellent thermal shock resistance

◆Excellent mechanical strength

◆Good spalling resistance and wear resistance.

◆Good corrosion resistance.

◆High-temperature creep rate is quite low.

◆Good volume stability at high temperature.

◆Low bulk density, low thermal conductivity, good thermal insulation performance.

Technical data for High Alumina Bricks for blast furnace

ITEM	UAL48	UAL55	UAL65	UAL75	UAL80	UAL85	ALP80
Refractoriness, ℃	1750	1770	1790	1790	1810	1810	1810
Apparent Porosity,%	22	22	23	23	20	20	18
C.C.S, Mpa	39	44	49	53	55	60	100
Refractories Under Load (0.2Mpa)，℃	1420	1470	1500	1520	1500	1520	1550
Reheating Linear Change,%	1450℃x2h 0.1～-0.4	1500℃x2h 0.1～-0.4	1500℃x2h 0.1～-0.4	1500℃x2h 0.1～-0.4	1550℃x2h -0.5～+0.5	1550℃x2h -0.5～+0.5	1550℃x2h -0.5～+0.5
Al₂O₃ Content , %	48	55	65	75	80	85	82

FAQ

Q1:Are you a manufacture or trader?

A:Factory+trade(mainly factories,at the same time,we operates other related products).

Q2:Can we visit your factory?

A:Sure,welcome at any time,seeing is believing.

Q3:What's the MOQ of trial order?

A:No limit,We can offer the best suggestions and solutions according to your condition.

Q4:Which payment terms can you accept?

A:T/T,L/C are available for us.

Q5:After an order is confirmed,when to deliver?

A:15-25days after deposit.

Q6:Is your company accept customization?

A:We have own factory and excellent technical team,and we accept OEM service.

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 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: The difference between aluminium refractory and magnesia refractory: Magnesia refractory belongs to alkaline refractory materials refers to refractory products such as magnesia magnesia brick magnesium iron spinel magnesium aluminum spinel magnesia ramming materials and other products of raw materials is the main crystal phase is periclase magnesia products

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 faster for heat transfer between corundum bricks and high alumina bricks?: There must be a difference. They vary in color from the amount of aluminum, the weight, the temperature, and the color.

Q: What are the alloy wear resistance materials?: According to the composition of Beijing Naimo metal materials company will wear resistant metal materials is divided into the following five categories: one: high manganese steel series: high manganese steel (ZGMn13),

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 is the apparent porosity of high alumina brick?: Total porosity is porosity refers to the total volume of sample porosity in the percentage of total volume of samples. Apparent porosity refers to the percentage of the total volume of openings, pores, and total specimens in the sample.

Q: Use of high alumina refractory bricks?: High alumina refractory brick in Al2O3 more, close to neutral refractory material, can resist acid slag and alkaline slag erosion, because it contains SiO2, so alkaline slag ability than acid resistance slag ability less.It is widely used in building blast furnace, hot blast furnace, furnace top, blast furnace, reverberatory furnace and rotary kiln lining. In addition, high alumina bricks are widely used as furnace regenerative checker, pouring system for plug nozzle, etc..

Q: What is the difference between metal compounds and metal solid solutions?: Sigma phase belongs to Affirmative system, there are 30 atoms in the unit cell, two element alloy, sigma phase formation is related with the following conditions: (1) the atomic size difference, phase difference between the maximum sigma atomic radius of a tungsten cobalt, the atomic radius difference is 12%. (2) there is a set of cubic lattice elements (coordination number 8), and another component is face centered cubic or dense six square lattice (coordination number is 12). (3) appear in "average number of races" (s+d layer electron number) in the range of 5.7 ~ 7.5. The region of the presence of sigma in the two - element alloy is shown in table 3. In the three element system, the concentration and temperature range of the formation of the sigma phase are affected by the addition of third components. Usually in chromium stainless steel in Fe Cr phase, in Fe - Cr - Mn three yuan, sigma phase iron chromium and chromium can form Mn two element, when the addition of manganese in stainless steel, will promote the formation of sigma phase, and stabilizes the wide temperature range. Many of the Fe Cr alloy elements. The phase temperature range increases. In less than 820C stable Fe Cr phase, silicon promotes the formation of D phase and the stable temperature increased to 900 to 960 DEG C, manganese and molybdenum can improve the temperature stability of sigma phase to 1000 DEG C.

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