Refractory Fire Clay Brick

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General Information

Fireclay bricks are made from clinker clay. The alumina content ranges from 36% to 48%.

Feature
Low thermal conductivity
High refractoriness
High mechanical strength
Excellent thermal shock resistance

Application
Fireclay bricks are commonly applied in blast furnace, hot blast furnace, teeming ladle, glass furnace, etc.

Item	Index
Item	SK-30	SK-32	SK-34	SK-35
AL2O3 %	30	35	38	45
Fe2O3 %	2.5	2.5	2	2
Refractoriness(SK)	30	32	34	35
Refractoriness Under Load, 0.2MPa, (°C )	1250	1300	1350	1400
Apparent Porosity (%)	22-26	22-26	20-24	20-22
Bulk Density (g/cm³)	1.9-2.0	1.95-2.1	2.1-2.2	2.15-2.22
Cold Crushing Strength (MPa)	20	25	25	30
Thermal Expansion at 1000°C (%)	0.8	0.6	0.6	0.5

Note:

Q:What can be applied to the burned refractory brick to resist heat shock?: Acidic refractory material use monox as the main component, among which cilica brick and clay brick are commonly used. Silica brick is silicious product containing monox more than 93%, whose raw materials include silica, waste silica brick scrap and etc. The acid resistance of slag erosion ability is good, and the softening temperature under a fixed load is high. The volume won't shrink after repeated burning, but even a slight expand; but it is vulnerable to the erosion of basic slag, and has low thermal shock resistance. The silica brick is mainly used for coke oven, glass melting furnace, acid hearth furnace and other thermal equipments. Clay brick uses refractory clay as the main raw material, containing 30% to 46% of aluminuum oxide, belong to weakly acidic refractories. It has good heat shock resistance and corrosion stability to acid slag, and it's widely used. Neutral refractory materials use aluminum oxides, chromium hemitrioxides or carbons as the main components. Corundum products containing more than 95% of alumina is a kind of high quality refractory material with wide application.

Q:Are refractory bricks necessarily needed to build a kitchen stove?: It will be better to use refractory bricks for long term because of its high temperature resistance

Q:application of phosphate refractory bricks: The 4 properties of phosphate refractory bricks: (1) high strength wear resistance (2) and chemical erosion (its alkali resistant ability is better than that of clay brick and high alumina brick) (3) and good thermal shock resistance (4) high load softening temperature in rotary kiln, kilneye, kiln Zone door cover, cooling machine and lining refractory brick falling parts easy to loose

Q:How are shale porous bricks and clay porous bricks distinguished?: Dimensional deviation is less than clay brickBecause the plastic index is better than that of clay shale itself, although the requirements of the national standard for the size deviation of sintered brick is the same, but the size deviation of shale in actual production is generally less than the clay brick.

Q:Why can't build refractory brick behind the skew block?: Refractory is heat expansion and cold contraction, when it is high temperature, it will squeeze toward the center and the vault will be deformation .

Q:What are the release agents of refractory bricks?: Alkalinity, the production process of alkaline, acid and alkali resistant transparent instant thickening powder, you can adjust the proportion according to the cost and needs of quality, environmental protection: One: Add the preservative into water to mix, after soaking one hour, then mixing evenly the production ratio, and then add the super core release agent into water to mix, add flavor pigment masterbatch into water to mix with water mixing, ensure completely dissolved, then add the waste oil, falvor is appropriate amount= release agent. Two, the newest recipe of release agent super core release agent masterbatch, waste engine oil, water, instant acidproof and alkaliproof transparent thickening powder, wire drawing powder, preservative, flavor and pigment= release agent super core wire drawing powder with water mixing, it is the most newly developed special core masterbatch and engine oil of Chengdu Hengfeng Hongye detergent factory, and it doesn't contain toxic solvents, especially 1, it has the following features, after thickening more than half an hour or so, mix evenly is ok, in a few seconds will waste oil and alkali: 10% of waste engine oil, 20% of release agent core masterbatch, 88% of water, 500g instant acidproof alkaliproof transparent thickening powder, 80g wire drawing powder, 1g pigment and preservative and lubricating oil and industrial grease, these integrate with water.

Q:Why can't gravity retaining walls be made of clay bricks?: The masonry of gravity retaining walls, of course, takes into account compression problems, and the use of clay bricks requires consideration of compression calculations and service life.

Q:Why limit sintering brick first and develop new wall material?: The sintering brick is not fit for the national energy saving policy. Indeed, to do a good job of energy saving and emission reduction, and protect our living environment, the relevant departments under the state issued a ban on the construction of the construction industry, prohibit the use of ordinary clay sintering.

Q:What type of refractory brick won't deform or crackbe for a long time in the temprature of about 1600 degrees?: 1. , mullite poly light ball brick type, andalusite brick type: MJ-1600 MJ-1700 the temperature is higher than 1600 C. 3, the refractory bricks that won't deform or crack in the 1600 degrees Celsius for a long time includs the following several commonly used bricks: GMZ-80 GMZ-75 the temperature is higher than 1650 DEG C, 2, corundum mullite brick type

Q:What kind of coal should be used to burn refractory brick? and how many calories smoke is suitable?: Coal briquette's effect is also good

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