Refractory Bricks
low porosity refractory fire clay brick for glass furnace

low porosity refractory fire clay brick for glass furnace

1.Introduction:

low porosity refractory fire clay brick for glass furnace produced with Al2O3 content is above 42%, and a small number of alkali metals, metal oxides, etc. Mineral composition is usually mullite, quartz and glass phase. Its refractoriness is 1580-1750 °C, refractoriness under load is 1250-1450°C, with good thermal resistance and strong ability to resistant  acid slag.

2.Features of refractory fire clay brick

1.reduce the heat capacity of kiln walls

2.promote the heat efficiency of kilns

3.high strength

4.corrosion and erosion resistance

3. Application

refractory fire clay brick is used for industry kilns and inner lining of kilns wall.

4.Physical and chemical indexes of refractory fire clay brick:

Index

fire clay refractory brick

DN-10

DN-12

DN-15

DN-18

AL2O3 % ≥

45

45

42

42

Fe2O3 % ≤

1.00

1.20

1.65

1.80

Bulk Density≥ g/cm3

2.40

2.35

2.30

2.25

Apparent porosity % ≤

10

12

15

18

Cold crushing strength Mpa (Mpa) ≥

70

65

60

48

Refractoriness ≥ °C

1750

1750

1750

1750

Reheating Linear Change%

1400°C×2h

-0.1~+0.05

1400°C×2h

-0.1~+0.05

1400°C×2h

-0.2~0

1400°C×2h

-0.4~0

0.2Mpa Refractoriness under loadT0.6 ≥ °C

1500

1470

1450

1400

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