Fire-clay Bricks for Laying of Blast Furnaces
Bricks are used for lining of different zones of furnace.
Technical characteristics
Rate for grade | |||
---|---|---|---|
ShPD-39 | ShPD-41 | ShPD-43 | |
GOST 1598-96 |
|||
Mass fraction, %: Al2O3, minimum Fe2O3, maximum |
39 1,5 |
41 1,5 |
43 1,5 |
Compressive strength, N/mm2, minimum, for numbers of bricks: 5, 6, 7,8 other |
50 |
70 |
70 |
Open porosity, %, maximum | 16 | 12 | 12 |
Остаточное изменение размеров при нагреве, %, не более при температуре 1450 °C | 0,3 | 0,2 | 0,2 |
Refractoriness, °С, minimum | 1750 | ||
Temperature of initial softening, °С, minimum | 1440 | 1500 | 1530 |
Form and dimensions
Straight brick
Number of brick | Dimensions, mm | Group of complication | ||
---|---|---|---|---|
a | в | б | ||
1 | 230 | 75 | 150 | 3 |
2 | 345 | 75 | 150 | 3 |
3 | 230 | 75 | 115 | 2 |
4 | 345 | 75 | 115 | 3 |
5 | 230 | 150 | 150 | 6 |
6 | 345 | 150 | 150 | 6 |
7 | 230 | 90 | 150 | 5 |
Side arch brick
Number of brick | Dimensions, mm | Group of complication | |||
---|---|---|---|---|---|
a | в | в1 | б | ||
8 | 230 | 109 | 62 | 150 | 6 |
Trapezoidal brick
Number of brick | Dimensions, mm | Group of complication | |||
---|---|---|---|---|---|
a | в | б | б1 | ||
9 | 230 | 75 | 150 | 135 | 4 |
10 | 345 | 75 | 150 | 125 | 4 |
11 | 230 | 75 | 150 | 120 | 4 |
12 | 345 | 75 | 150 | 110 | 4 |
Dimensions,mm | Limit deviation, mm, for grades of brick | ||||
---|---|---|---|---|---|
ShPD-41, ShPD-43 | ShPD-39 | ||||
Number of bricks | |||||
1, 2, 9, 10 | 5, 6 | 7, 8 | 1, 2, 3, 4, 9, 10, 11, 12 | ||
Ground | Unground | Ground | Unground | ||
Length a: | |||||
hearth | ±1 | - | ±2 | ±1 | - |
others | |||||
- with length of 230 | - | ±2 | - | - | ±2 |
- with length of 345 | - | ±3 | - | - | ±3 |
Width с, с1 | ±2 | ±2 | ±0,5 | ±2 | ±2 |
Thickness b, b1: | |||||
hearth | ±0,5 | - | ±0,5 | ±0,5 | - |
others | - | ±1 | - | - | ±1 |