LARGE FIRE CLAY BRICKS

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Refractory brick
1. Low thermal conductivity
2. Long service life, easy operation
3.cheapness
4.the most widely used

Features:

1. Low thermal conductivity, good thermal insulation performance.

2. Long service life, easy operation, could be shaped freely

3. Product specification: standard form, normal standard, shaped and special shaped bricks.

4. Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory materials, it is the most widely used.

Applications:

1. Carbon bake furnaces in the aluminum industry

2. Preheat zones and cyclones of rotary cement kilns

3. Insulation for glass tanks

4. Fireplace and pizza ovens

5. Coke ovens

6. Blast furnaces

7. Reheating furnaces

8. Suspended roofs

9. Lime kilns

10. Chimney

Technical data:

Item	SK-30	SK-32	SK-34	SK-36	SK-38
AL₂O₃ % (min)	30-35%	35-38%	38-42%	50-55%	60-65%
Fe₂O₃% (max)	3	3	2.8	2.5	2.3
Refractoriness	≥1670°C	≥1690°C	≥1710°C	≥1750°C	≥1770°C
Refractoriness under load, 0.2MPa, (°C)	≥1270	≥1350	≥1350	≥1430	≥1450
Apparent porosity (%)	20-24	20-24	19-23	18-22	18-22
Bulk density (g/cm³)	2.00-2.05	2.05-2.1	2.1-2.15	2.15-2.25	2.25-2.35
Cold crushing strength (MPa)	≥25	≥30	≥35	≥45	≥50
Thermal expansion at 1000°C (%)	≤0.6	≤0.55	≤0.55	≤0.4	≤0.4

Q:Are refractory bricks poisonous?: Zirconium minerals are often associated with other minerals in the mining, because the bricks are basically burned under more than 1 thousand degree. But some of the bricks contain heavy metal elements chromium. Some of the brick contains zirconium, the vast majority are very safe, and heavy metal elements have a certain toxicity, there are many kinds of refractory bricks that the nature is very stable, and the associated minerals are generally radioactive

Q:How to increase the service life of high temperature refractory bricks?: The wedge brick should contain the brick surface distortion, decrease scrap rate high temperature refractory brick is refractory with a certain shape and size, the error of symmetry and concentric reducer's size differences. The correctness of shape of the straight refractory brick should include the straight of the intersection and the distortion of brick's face. Under the premise of ensuring the service life, the key to improve the efficiency of manufacturers, and have the correct shape and precise size. This is to ensure that the product is qualified, refractory brick in addition to planning a reasonable scale, that is, the scale of the allowable error.

Q:Do refractory bricks need to be sent to the lab to test after arriving the site?: Yes, need to test physical and chemical indicators

Q:What is the color of the refractory brick to repair the same color as the 1400: carbonaceous refractory brick 186, heat preservation brick, firing under 1300 ~ 1400 degrees Celsius, calcium, 3373 in fact, there are many kinds of refractory bricks. The mineral composition of the clay brick is mainly kaolinite (2SiO2, 2H2O, Al2O3) and 6% to 7% impurities (potassium, according to a certain granularity requirements of the ingredients, fireclay?brick, etc., after molding, titanium, dry.

Q:which kind of refractory bricks do coke oven and oxtongue brick belong to ( ) A, silica?brick B, clay brick C, high alumina brick: General use clay bricks, but the silica?brick is better, the price is expensive.

Q:Whether yellow dextrin is used in refractory bricks?: use professional mortar, do not use yellow dextrin

Q:What kind of material is good to be laid on the kiln car, refractory brick?: It depends on the temperature. General thermal insulation brick is ok, when temperature is high, use mullite, and when temperature is not high, alumina is ok

Q:Expansion ratio of light corundum fireproofing brick: And then the appropriate drying, the using temperature 1500~1700 degrees of light corundum brick, the porosity is 70% to 80% Now, use foaming method to produce light corundum brick, 3g&#47, shaped idiosome with mould dry for 4 days in 60 degree to 70 degree oast, it will demoulding, foaming method and evaporating method produce light corundum brick, the thermal conductivity is 0. the containing of AL203 has difference, the corundum brick that use corundum hollow?sphere to produce contain the highest AL203 Finished light corundum brick don't have accurate shape and size after firing.8 1, so products need mechanical or manual cutting after the kiln, finally, firing in 1300 degree and 1550 degree, basically still meters with water forming, just add to burn: 50~60h, because its production methods and the introduction of additives are different, the total sintering time.17W&#47, light corundum fireproofing brick can be made into density is 0, withstand voltage strength is 4MPa, the containing of A1203 is no more than 99%.

Q:What are 85 bricks, 95 bricks and standard bricks? What are the specifications?: Clay to clay (including shale, coal gangue powder) as the main raw material, through mud processing, molding, drying and roasting and.

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