RN-42 Refractory Fireclay Brick for Hot Blast Furnace

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100 kg
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2000000 kg/month

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Product Description:

High alumina fireclay Brick  


High alumina fireclay Brick for Heating Furnace is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. For various industrial kilns & furnaces, it is a kind of essential refractory for energy saving and temperature preservation.

This series of High Alumina fireclay Brick for Heating Furnace are made of selected high alumina bauxite, kaolin caly, hollow microsphere as the mian material.By shaping at high pressure and sintering at high temperature. 

Fireclay brick is  shaped refractory product.It is made from flint clay clinker and binder , Through high heat sintering. The Al2O3 content range from 28% to 48%.The refractoriness range from 1580°C to 1750°C(SK-30.SK-32.SK-34.SK-35).

 

Product Applications:

High alumina fireclay Brick are ideal for use in the below applications 

Furnaces of metallurgy industry, heat treatment furnace

Furnaces of chemical industry and construction industry.

Furnace of incineration of garbage, recirculating fluidized bed furnace

Standard sizing: 230 x 114 x 65 mm others up to the client

 

Product Advantages:

CNBM has success in its Fireclay brick due to their cost-effectiveness and excellent insulating properties. CNBM also has experience in ceramic fiber blankets application and would like to assist you in product selection, system design, and installation techniques.

 

Main Product Features:

High refractoriness,High-temperature endurable .

Good corrosion resistance.

Good spalling resistance and wear resistance.

Good thermal shock resistance.

High mechanical strength.

High-temperature creep rate is low.

Good volume stability at high temperature.  

Product Specifications:

ITEM

UNF42

UNF46

ZGN42

RN40

TDL45-12

Refractoriness, ℃ 

1730

1750

1750

1730

1760

Bulk Density, g/cm3

2.15

2.25

2.3

2.15

2.37

Apparent Porosity, %

22

20

15

24

12

C.C.S, Mpa

30

35

58

28

68

Refractories Under Load (0.2Mpa)

1400

1420

1450

1430

1500

Reheating Linear Change, %

1400℃x2h              0.1-0.4

1430℃x2h              0-0.1

1450℃x2h              0-0.2

1350℃x2h       0-0.3

1450℃x2h              -0.1+0.05

Al2O3 Content , %

42

46

42

40

45

 

Size :

Common sizes

 

Straight type

Arch type

Wedge type

L×W×H (mm)

230×114×65

230×114×75

230×114×32

220×110×60

220×110×50

220×110×40

220×110×30

L×W×H/h (mm)

230×114×65/55

230×114×65/45

230×114×65/59

220×110×65/50

220×110×75/65

220×110×60/40

L×W×H/h (mm)

230×114×65/55

230×114×65/45

220×110×75/65

220×110×60/40

Other sizes according to customer requirements

 

 

FAQ:

Q1: How about your factory’s annual production capacity?

A1:CMAX annual production is about 310,000Tons.

Q2: How many production lines of your factory?

A2:CMAX has 26 production lines, including eight silicon bricks lines, and each one of mullite brick, high alumina brick, insulating brick and monolithics line.

Q3:How large the scale of your factory?

A3: CMAX covers almost 200,000 Square meters, including plant area of 180,000 square meters.

Q4: What’s your factory’s product scope?

A4:CMAX main products are: refractory for hot blast stove, refractory for coke oven, refractory for glass kiln, refractory for carbon calcining furnace, refractory for acid pickling line, refractory for cement kiln, refractory for blast furnace, refractory for nonferrous metal furnace, and basic refractory raw materials.

 

Product Picture 

 RN-42 Refractory Fireclay Brick for Hot Blast Furnace

Produce Processing 

Crushing

In this stage massive raw materials which have been stored, are ground and classified into proper sizes, making them easier to shape.

Mixing

The prescribed size of ground raw material is weighed and mixed into a designated amount of water and forming agent.

Shaping

The mixture is then poured into a mold to form shapes, and the pressure is high.

Drying 

In this stage water is removed from the shaped bricks. This helps preventing the bricks from deforming or cracking which may result due to the rapid evaporation

Firing 

This is the most crucial process in refractory manufacturing. The modeled bricks are fired at high temperature to complete their thermochemical reaction so that they do not deform.

Inspection 

The bricks' physical and chemical properties are inspected very carefully by rigid quality management procedures.

Packing shipment

We guarantee efficient delivery every time.

Packing

We also supply (Click on following picture if interested):

 RN-42 Refractory Fireclay Brick for Hot Blast Furnace

 

 


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Q:What kind of refractory brick is suitable for clinker production line of 2,500 tons?
are you saying the cement plant rotary kiln?
Q:How much refractory material is required for 1 million tons of coke oven
This depends on the number of specific cubic, different factory designs different boiler, we need volume to caculate.
Q:Which is best of refractory brick press machine?
Rub press machine have been forced out. Without permanent magnet. The electric screw press machine is suitable for the forming of refractory bricks. Use Kehui switch reluctance to servo motor to drive electric screw press machine, have the ability of high quality electric screw press machine, no water cooling, high efficiency and energy saving, green and environmental protection.
Q:What is refractory brick? What is refractory clay? ?
refractory brick----is refractory material with a certain shape and size. According to the preparation process, bricks can be classified into burnt bricks, unburned brick, electric melting brick (fused cast brick) and the refractory insulating bricks; according to the shape and size, bricks can be classified into standard brick, ordinary brick and specific brick and etc. High-temperatured building material and structural material that can be used to build furnaces and various thermal equipments, and can endure various physical and chemical changes and mechanical effects at high temperature. For example, refractory clay brick, high alumina brick, cilica brick and magnesia brick and etc.. Fireclay -- usually refers to a kind of soil clay used for fire the stove and the furnace hearth in folk 1, characteristics and usages: Clay refractory brick is a kind of weak acid refractory material, its thermal stability is good, suitable for hot blast stove, various boiler lining, and flue, smoke room, etc.. 2, product specifications: Standard form, general profile, special shaped and special shaped brick. Physical and chemical properties of clay refractory bricks. The upper limit ---- about 1500 degrees under normal pressure
Q:The form of boiler furnace wall
Q:What are the differences between sintered bricks and refractory bricks?
Easily weathered. There is no obvious difference in the usage between fired pavingbricks and refractory bricks; sintered bricks are generally used for residential road and landscape engineering, they do not fade; refractory bricks are used for all kinds of kiln constructions in plant: It is not anti-freeze (when the temperature is below the zero degree, the brick will easily "blister" in the saturated state), the reasons are high compressive strength and high temperature zone' heat insulation and so on. Fired pavingbrick is a powerful vacuum extrusion type. Fire suppression road brick is high temperature furnace brick, which is not suitable to be used as road brick. Its characteristics are: Wear resistance and freeze-thaw resistance (the anti freeze-thaw cycle of brick is more than 50 times in saturated state), non weathering, sidewalks, short service life. Sintered brick belongs to the building material, refractory brick belongs to the industrial kiln material, which is easy to moss
Q:Are there any good improvement measures for the always collapse of the previous vaulted tunnel kiln built by refractory bricks?
refractory castable integrally casting
Q:What materials make of clay insulating fireclay brick?
The aluminium silicate refractories whose aluminium oxide content is 30% ~ 46% is called clay-based refractories. Clay products mainly consist of mullite, glass phase, cristobalite and quartz.
Q:Whether the cement kiln refractory bricks belong to hazardous waste or not?
Refractory brick produce dust hazards if it is broken, It is also should be paid attention to that if is refractory brick containing chromium, which will easily produce Cr VI when met with water, Cr^6+ material produced by magnesia chrome bricks is difficult to be damaged in the environment, which in many cases will exist in nature for a long time, continue to endanger human health. Chromite, as the raw materials to make magnesia-chrome brick, often exists in the form of trivalence (Cr203), is not toxic, nor carcinogenic, but in the cement rotary kiln high temperature oxidation atmosphere, it reacts with alkali metal oxide in cement materials, will produce chromic acid and alkali acid which is harmful to people's health. There are MgOIn contained in broken magnesia-chrome bricks, whose water solution is weakly alkalinity and generally will not easily produce K2cr207. K2Cr04 is a kind of weak oxidaiblity chemical compound, which has high chemical stability. It is very difficult to be reverted to non-toxic trivalent chromium when it blends into the environment. In many cases, these chemical compounds containing Cr VIcompounds will exist in nature stably, causing long-term pollution to the environment. This kind of harm is sustainable. The second reason that is very serious is that the high grade chrome ore is less and less in the world, forcing refractory manufacturers to find and develop
Q:What are the physical and chemical properties of refractory bricks
The thermal shock stability, linear change on reheating, softening temperature under a fixed load, compressive strength under normal strength refractoriness

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