Large Fireclay 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: How much is the silica powder in refractory bricks.: It's not easy to construct, also need to consider the technical and economic indexes, DH3, 1 kg silica powder replaces 1 ~ 3 kg cement, which is the reason why silicon powder was not used and spreaded in concrete in past, choose some silica power fume. In general, with the smoke escaping by special capture device for collecting and processing To determine the mixing method of silica powder, when mixing silica powder, you should find out the optimal dosage in order to obtain the best results, as the study, the content is 5% ~ 30%, H, the mixing of super high strength concrete, use same amount of silicon powder to replace equal cement to main same fluidity, Microsilica or Silica Fume, it is mainly according to the design requirements, and does not reduce the amount of cement, sand and stone to adjust the optimal dosage of water reducer, when deciding the best mixing amount of silica fume, the concrete is too sticky, most use naphthalene water reducing agent.

Q: Clay brick, red brick, always fried brick how to do?: Small white stones, such as Magnesium Oxide and limestone (calcium carbonate). Take "containing limestone" (calcium carbonate) stones, after firing, into lime (calcium oxide), put a long time, absorb the moisture in the air, will cause the lime (calcium oxide) reduction, volume expansion, resulting in fried brick.

Q: What are the materials for building blocks and what are the specifications?: According to the hole rate: solid brick (no hole or hole less than 25% bricks), porous brick (hole rate is equal to or greater than 25%, hole size, size and small number of bricks, often used in load-bearing parts, higher strength level. Hollow brick (hole rate equal to or greater than 40%), large pore size and small number of bricks, often used in non load-bearing parts, low strength grade. )

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: What are the simple ways to distinguish between excessive clay bricks and less fired clay bricks?: Generally speaking, compared with the exterior burning brick, the internal combustion brick not only saves the clay and the waste material, but also has smaller volume density, lower thermal conductivity, and can increase the intensity by about 20%. Burnover light color, sound, low intensity; burned brick deep color, crisp sound, high strength, irregular size. These two kinds of bricks are unqualified products.

Q: Can red bricks be burned in tunnel kiln which used to burn refractory brick?: The raw material determines the production process; the output determines the kiln type; the technology determines the quality and quantity.

Q: How many pieces of porous brick is equal to one ton?: Refractory bricks are generally classified into two types, that is, shapeless refractory materials and shaped refractory materials. Shapeless refractory material: Also known as castable refractory, is hybrid power material composed of a variety of aggregate or a kind of aggregate and one or more kinds of the mixture of adhesive particles, it should be used evenly mixed with one or more kinds of the liquid, which has strong liquidity. Shaped refractory material: The general making of firebrick, there are standard rules for the shape, can also temporarily process according to need of building and cutting. The following are the specifications. fireclay bricks 230*114*65 each block 3.0 - 3.6 kg; special-shaped fireclay brick 230*65/55*114 each block 2.8 - 3.3 kg; the reason for the weight's ranges is that because the quality is different, in general, heavy density, good quality!

Q: Can you direct the clay brick walls embryo: Must not。 Not damp, damp, air tight, poor pressure bearing, bad adhesion between bricks and bricks

Q: What is the perservation method for refractory bricks used for cement kiln?: The place should be dry and ventilated. Remember that the packaging can't be damaged. If is not used for a long time, put desiccant next to the bricks. Then have thermoplastic packaging again, it won't get damp. Under normal circumstances, it can be stored for 3-5 years and won't be hairy

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