High Alumina Brick - High Quality High Aluminium Brick

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1. High temperature
3. with economical prices
4. Various models and size
5.acid and alkaline resistant

1.Apparent porosity max 24%
2.Bulk density min 2.30 g/cm3
3.CCS min 40MPa
4.0.2Mpa (RUL)min 1400
5.Fe2O3 max 1.8 %

Index		LZ-75	LZ-65	LZ-55	LZ-48	LZ-80	LZ-85
Refractoriness SK		38	37	37	36	39	40
Refractoriness under load 0.2Mpa °C		≥1520	≥1500	≥1470	≥1420	≥1530	≥1550
permanent linear change %	1500°Cx2h	+0.1~-0.4	+0.1~-0.4	+0.1~-0.4		+0.1~-0.4	+0.1~-0.4
permanent linear change %	1450°Cx2h				+0.1~-0.4
Apparent porosity %		≤23	≤23	≤23	≤22	≤23	≤23
Cold crushing strength Mpa		≥53.9	≥49.0	≥44.1	≥39.2	≥55	≥55
Chemical composition	Al2O3 %	≥75	≥65	≥55	≥48	≥80	≥85
Chemical composition	Fe2O3 %

Q: What are the high aluminum bricks made of?: The amount of refractory mud accounts for about 6% of the brick weight

Q: What are the grades of high alumina bricks?: According to the size of high aluminum brick is divided into: standard brick, special-shaped brick.

Q: What's the price of high alumina refractory bricks?: The price of high alumina refractory bricks varies greatly according to the content of AL2O3.

Q: What is the difference between T3 refractory bricks and high alumina refractory bricks?: The T3 in T3 refractory bricks refers to the model indicating that the refractory brick model is T-3, and that the corresponding T-3 model is 230*114*65 (mm)

Q: How to make refractory bricks and boiler wall adhesion more firm?: Suggest that you use fire brick to increase the length of brick or pull the amount of turn, and use high temperature mortar masonry

Q: What's the weight of the refractory bricks?: Fireclay refractory bricks: 3.4kg-3.8kg - according to the quality of raw materials, prices ranging from 1 yuan to 2.7 yuan, high alumina refractory brick: three, high aluminum in 3.9kg or so. Ordinary T-3 firebrick weight calculation method: 230*114*65*2.2/2.1.

Q: What is the apparent porosity of high alumina brick?: Total porosity is porosity refers to the total volume of sample porosity in the percentage of total volume of samples. Apparent porosity refers to the percentage of the total volume of openings, pores, and total specimens in the sample.

Q: What causes breakage of refractory bricks?: There are many factors that lead to the damage of refractory brick, can be divided into: the chemical loss (e.g. salt penetration, redox phenomenon), heat loss (burning, thermal shock), mechanical loss (kiln deformation, thrust, brick masonry quality etc.).

Q: How does the physicochemical index change when the high alumina brick is used at high temperature?: When the high alumina brick is used at high temperature, the physical and chemical indexes and other constants will not change if the temperature is in the physical and chemical indexes and the softening temperature of the load.

Q: The difference between clay bricks and clay bricks: According to the hole rate: solid brick (no hole or hole rate less than 25% bricks), porous brick (hole rate is equal to or greater than 25%), the size of the hole is small and the number of bricks, usually used in load-bearing parts, higher strength level. Hollow brick (hole rate equal to or greater than 40%, large pore size and small amount of brick, commonly used in non load parts, low strength grade).Solid bricks and porous bricks are mostly used for load-bearing structural walls. Hollow bricks are mostly used in non load bearing structures.

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