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Carbon block
The products are widely used in blast furnace.
Super Micro-pore Carbon Block
Super micro-pore Carbon Block is made of calcined anthracite under high temperature and other additives by extruding, baking and processing.
Typical properties are with high thermal condiuctivity, high micr-pore porosity and good permeability which may reduce erosion to the body of blast furnace, and avoid the iron liquid erosion and permeability.
Super Micro-pore Carbon Block can meet the requests for the large scale blast furnaces
Micro-pore Carbon Block
Micro-pore Carbon Block is made from calcined anthracite under high temperature with other additives by extruding, baking and processing.
Typical properties are better micro porosity, permeability, and anti-erosion from iron liquid.
Micro-pore Carbon Block is used in lay hearth of blast furnace.
Partial Graphite Carbon Block
Partial Graphite Carbon Block is made of calcined anthracite under high temperature and graphite. Medium pitch acts as binder. Main processes are extruding, baking and processing.
Typical properties are with good thermal conductivity and anti-alkaline.
Partial Graphite Carbon Block is used in bottom of blast furnace.
Ultra-thermal conductivity Graphite Block
Ultra-thermal Conductivity Graphite Block is made of low ash pet-coke and pitch acts as binder by extruding, baking , impregnation, graphitization and processing.
The product is with higher thermal conductivity which is helpful in reducing the temperature, cooling and slowering the erosion to the furnace bottom.
Ultra-thermal conductivity Graphite Block is used in the hearth and bottom of blast furnace.
High thermal Conductivity Carbon Block
High thermal Conductivity Carbon Block is made of high thermal conductivity materials and partial graphite materials. Pitch acts as binder. Main processes are extruing, baking, and processing.
The product is with higher thermal conductivity.
High thermal Conductivity Carbon Block is used for the bottom of blast furnace.
Properties
 
No Item   Unit Partial Graphite Graphite Block High thermal Conductivity Micro-pore Super micro-pore
1 Fixed Carbon % 78 98
2 Ash % 8 0.5 7 20 22
3 Bulk Density g/cm3 1.50 1.52 1.6 1.60 1.68
4 Open Porosity % 20 20 18 18 14
5 Real Density g/cm3 1.90 2.10 1.90
6 Compressive Strength Mpa 30 19.6 30 36 36
7 Bending Strength Mpa 7.8 6 8 8
8 Iron liquid melting index % 32 30 30
9 Average Pore Diam m 1.5 0.25 0.1
10 Pore capacity under 1m % 20 70 80
11 Oxidation % 30 20 28 8
12 Permeability mDa 5.2 70 11.0 1
13 Thermal Conductivity Room termp. W/m.k 25 7
300 10
600 30 14 20
800 7 12
14 Anti-alkaline U or LC U or LC U U or LC U or LC

Dimension and allowable tolerance
Unitmm
Size L Allowable tolerance to be conformity to the National standard
200200L 2400
400400L,400500L 2700
400600L,500500L,500600L 2400
515450L 3280
500660L,500600L,550600L,600600L 3390