Refractory Bricks
High alumina bricks for Blast Furnace

High alumina bricks for Blast Furnace

High alumina brick refers to fire brick containing Al2O3 more than 48%, which is made of high grade bauxite through high temperature calcinations...

Feature

1. Strong volume stability at high temperatures

2. Good thermal shock resistant

3. Wear resistance

4. Chemical corrosion resistance

Advantages

First: Two production factory;

Second: The annual output of 180,000 ton refractory products;

Third: The annual output value reached 350million yuan;

Fourth: Specialized in this field for 27 years

Finally: Obtained IS09001:2000, ISO14001 and GB 28001 Certification.

Physical and chemical indexes

Item

LZ-75

LZ-65

LZ-55

LZ-48

Al2O3  %

≥75

≥65

≥55

≥48

Cold crushing strength ,MPa

≥54

≥49

≥44

≥40

Apparent porosity  ,%

≤23

≤23

≤22

≤22

Refractoriness under load , °C

≥1520

≥1500

≥1470

≥1420

Reheating linear change (1500°C,2h) %

+0.1-0.4

+0.1-0.4

+0.1-0.4

(1450°C,2h)+0.1-0.4

Refractoriness  °C

>1790

>1790

>1770

>1750

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