Fireclay Brick - 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 are the main components of refractory bricks: Mainly is magnesium oxide, sodium silicate as a binder

Q: when to replace the worn refractory bricks in rotary?kiln?: Wear out at least 23.

Q: What kind of refractory brick is suitable for 24*28m rotary kiln of 5,000 tons?: 24~28 meters belongs to the transitional zone, magnesia spinel brick or silicon carbide brick (Series)

Q: What is the refractory temperature of refractory bricks?: First look at the used parts of refractory brick, anti stripping performance, these are the most basic performance factors, the refractory temperature of high alumina brick is 1770 -1790 degree, the refractory temperature of clay brick is 1380-1570 DEG C, record the anti acid corrosion data of refractory bricks, the compressive strength of refractory bricks, at the same time, you should analyze each part of the furnace pH index and sintering temperature of working. When purchasing refractory bricks, you need to pay attention to many factors, high temperature creep property, softening temperature under a fixed load, 6548, volume stability at high temperature. Because the production of the product is affected by the weather and fuel energy, etc.. 186, select the suitable refractory bricks

Q: How aluminium oxide becomes a entity from the the form of powder (such as a ball, a stone, or a refractory brick)?: Just like the process of making steamed bun from flour. Ball milling ---in the auxiliary material to make the slurry --- suppress the body --- high temperature calcination

Q: What are the sizes and sizes of clay bricks?: At present, with the minimum size of the maximum size of the market, for the maximum size of the clay brick, there are 600*250*200mm, 180*115*90mm, 300*300*55mm, and the minimum sizes 150*150*150mm, 235*115*55mm and so on, the construction industry the most basic materials for clay brick, must use in daily life is very broad.

Q: The boiler is divided into several categories according to the structure, what characteristics does each have?: package boiler and assemble boiler are divided into vertical boiler and horizontal boiler. Vertical boiler. Assembled boiler adapts to boiler more than 6 tons, the package adapts to boiler less than 10 tons.

Q: When using high alumina refractory brick, what are the reasons leading to the decline of the performance of high alumina brick?: The excess air coefficient is controlled in 1, in order to prevent producing water cracks in the production of high aluminum refractory brick from, control the water absorption of 2 grade clinker of bauxite with high alumina below 4%-5%. 1-1,the water absorption of the tube mill should also be controlled below 6%, and adjust thermotechnical, making the high alumina refractory brick burning be in the stable weak oxidizing atmosphere. should be 2

Q: Why are clay bricks used when buildings are below zero? Frost heaving, water absorption, or something?: The clay brick has a certain strength, and has better heat insulation and sound insulation performance, and the interior wall of the winter can not appear condensation phenomenon, and the price is low. Although a variety of new wall materials are emerging, clay bricks will still be used as a main material for masonry work in the future

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