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LI Series Insulating Fire Brick

Product description

Low iron bricks are produced by secondary extrusion processing technology.

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Product details

Low iron bricks have characteristics of low iron content, high resistance to carburization, small linear change on reheating, good chemical stability, excellent corrosion resistance, uniform internal structure and low thermal conductivity.

Features and Application

Characteristics:

  • Low iron content
  • High resistance to carburization
  • Small linear change on reheating
  • Good chemical stability
  • Excellent corrosion resistance
  • Uniform internal structure
  • Low thermal conductivity

Applications:

All kinds of heat treatment, carburizing furnace, nitriding furnace, and other industrial furnace wall and lining insulation material. Low iron bricks can be used as lining and ceiling materials for various kinds of ceramic kilns, controlled atmosphere furnace materials, and other industrial furnace insulation materials.

Size and TDS

Name and trademark

Low iron brick

LI45

LI48

LI48a

LI50

LI50a

LI52

AI2O3 (%)≥

45

48

48

50

50

52

Fe2O3 (%)≤

0.7

0.7

0.6

0.6

0.5

0.5

Density (g/cm3)

0.6

0.8

1.0

2.0

0.6

0.8

Compressive strength (MPa)

2.0

3.0

4.2

25

2.0

3.5

Linear change Cx12h (%)≤

1300
0.5

1300
0.4

1300
0.4

1300
0.2

1350
0.5

1350
0.5

Thermal conductivity W/(m.k)
350±25℃

0.25

0.35

0.45

1.6

0.25

0.35

Operation temperature (℃)

1300

1300

1350

1350

1350

1350