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Micro Pore Carbon Bricks

  • Micro Pore Carbon Bricks


1.Have excellent regular performances

2.H
ave good application performances.

3.H
ave low air permeability.
Micro pore carbon brick have excellent regular performances, such as mechanical strength and high refractoriness advantage,and as a kind of hot sales application in furnace hearth and furnace bottom of blast furnaces.welcome to inquiry ,and email us  or contact us.

Micro Pore Carbon Bricks Description

Micro pore carbon bricks not only have excellent regular performances, such as mechanical strength and high refractoriness,but also have good application performances, including alkali resistance, thermal conductivity, molten iron corrosion resistance, etc. Meanwhile, micro pore carbon  bricks have low air permeability, average pore diameter is less than 1μm, less than 1μm pores volume  ratio is larger than 70%.

Micro Pore Carbon Bricks Characteristics

Micro pore carbon bricks adopt high temperature (1500~2000℃) electric calcined anthracite as main raw material, proper quantity of natural graphite, alumina, pure silicon powder, silicon carbide and so on are added into the raw material to improve high temperature performance. Pure silicon or silicon carbide can effectively reduce pore diameter, so iron liquid and molten slag permeation can  be reduced, besides, carbon  blocks thermal conductivity and oxidization resistance are improved. Alumina added into micro pore carbon blocks can increase alkali metal salts corrosion resistance and molten iron erosion resistance. Middle temperature pitch is usually used as binder of micro pore carbon blocks.

Micro Pore Carbon Bricks Physiochemical Indexes
 
Item WTZ-1 WTZ-2
Bulk density g/cm3 ≥1.58 ≥1.54
True density g/cm3 / ≥1.90
Apparent porosity % ≤16 ≤18
Crushing strength Mpa ≥38 ≥36
Modulus of rupture Mpa ≥9 /
Average pore diameter μm ≤0.5 ≤0.5
< 1μm pores volume ratio % ≥75 ≥70
Thermal conductivity W/(m· K) 800℃  ≥12 ≥12
Air permeability m Da ≤10 ≤14
Iron liquid erosion index % ≤28 ≤30
Oxidization  rate % ≤10 ≤10
 
Micro-Pore Carbon Bricks Applications

Micro pore carbon bricks are mainly used at furnace hearth and furnace bottom of blast furnaces, so they will have good alkali corrosion resistance and molten iron permeation resistance, so blast furnace will have high efficiency, long service life, besides, energy consumption are also reduced.