Main Data

See also

Refractory and high-refractory products for laying of blast furnace air preheaters and air ducts

Refractories are used for laying of air preheaters and hot blast lines of blast furnaces and other heat plants.

Technical characteristics

 Rate for grade
  ShV-28 ShV-37 ShV-42 МКV-72
GOST 20901-2016

Mass fraction, %:

Al2O3, minimum

Fe2O3, maximum

 

28

n/a

 

37

n/a

 

42

1,7

 

over 72

1,2

Compressive strength for bricks, N/mm2, minimum for:

- checker

- wall, dome and air ducts

 

15

15

 

20

20

 

40

30

 

50

30

Open porosity for bricks, %, maximum, for

- checker

- wall, dome and air ducts

 

25

27

 

23

25

 

withing limits of

14-20

 

21

24

Residual variation of dimensions when heating, %, maximum at:

1350 °C

1450 °C

1600 °C

 

 

-0,5

-

-

 

 

-0,2

-

-

 

 

-

-0,4

-



-

-

-0,8
Temperature of initial softening, °С, minimum 1270 1330 1500 1550
Refractoriness, °С, minimum 1670 1730 1750 -

Limit deviations, mm

Dimensions, mm
Limit deviations for number
  1-74, 81-106 75-79
 length:  
  up to 230  ±2 - 2
  over 230 up to 350 inc.  ±3 -
  over 350 up to 450 inc.  ±4 -
  width   ±2 - 2
  thickness  ±1 ±1

 

Dimensions, mm
 Hexagonal checker brick №80
  distance between parallel edges  -2
  thickness  ±2
  hole diameter  ±2

Form and dimensions

 

Number of brickDimensions, mmGroup of complication
   L H S  
1 230 150 75 2
2 345 150 75 3
3 450 150 75 4
4 230 150 100 4
5 345 150 100 4
6 450 100 100 4

Wall wedge symmetric brick

Number of brickDimensions, mmGroup of complication
   L S S1 H  
7 230 135 150 75 3
8 230 120 150 75 3
9 345 125 150 75 4
10 345 110 150 75 4
11 450 115 150 75 4
12 230 135 150 100 4
13 230 125 150 100 4
14 345 120 150 100 4
15 345 110 150 100 4
16 450 115 150 100 4

Dome brick

Number of brickDimensions, mm
   L H H1 S S1 S2 S3
17 450 150 117 84 84 65 65
18 450 150 117 84 74 65 57
19 450 150 117 84 64 65 49
20 450 150 125 84 84 70 70
21 450 150 125 84 79 70 66
22 450 150 125 84 74 7 62
23 450 150 125 84 69 70 58
24 450 150 125 84 64 70 53
25 450 150 129 84 84 73 73
26 450 150 129 84 79 73 69
27 450 150 129 84 74 73 64
28 450 150 129 84 69 73 60
29 450 150 129 84 64 73 56
30 450 150 133 84 84 75 75
31 450 150 133 84 80 75 71
32 450 150 133 84 74 75 66
33 450 150 133 84 70 75 63
34 450 150 133 84 64 75 57
35 450 150 136 84 84 76 76
36 450 150 136 84 80 76 72
37 450 150 136 84 74 76 67
38 450 150 136 84 70 76 63
39 450 150 136 84 64 76 58
40 450 150 140 84 84 76 76
41 450 150 140 84 84 79 79
42 450 150 140 84 74 79 70
43 450 150 140 84 64 79 60
44 450 150 150 84 84 68 68
45 450 150 150 84 74 68 58
46 450 150 150 84 84 70 70
47 450 150 150 84 74 70 67
48 450 150 150 84 84 79 79
49 450 150 150 84 74 79 69
50 450 150 150 84 84 77 77
51 450 150 150 84 74 77 67
52 450 150 150 84 84 75 75
53 450 150 150 84 74 75 65
54 450 150 150 84 84 73 73
55 450 150 150 84 74 73 63
56 450 150 150 110 110 103 103
57 450 150 150 110 100 103 93
58 450 150 140 110 110 103 103
59 450 150 140 110 100 103 94
60 450 150 140 110 90 103 84

Support brick

Number of brickDimensions, mm
   L H H1 S S1
61 450 129 136 90 100
62 450 147 150 90 100
63 450 143 136 76 84

Manhole dome brick

Number of brickDimensions, mm
   L R1 R2 R3 R4
64 450 480 300 400 252
65 450 480 300 412 252
66 450 480 300 425 252
67 450 480 300 429 252
68 450 480 300 433 253
69 450 450 300 420 280
70 450 450 300 390 260

Closure dome brick

Number of brickGroup of complication

71

72

10

10

73

74

10

9

Straight checker brick

Number of brickDimensions, mmGroup of complication
   L H S  
75 230 130 40 5
76 170 150 50 4
77 230 170 50 3
78 230 150 50 3

Shaped checker brick

Number of brickDimensions, mmGroup of complication
   L H S  
79 230 130 40 6

Hexagonal checker brick

Number of brickGroup of complication
80 10

Straight brick

Number of brickDimensions, mmGroup of complication
   L S S1 H  
81 230 65 - 65 3
82 230 65 - 85 3
83 230 65 - 113 1
84 250 65 - 123 1

Side arch wedge brick (double-sided)

Number of brickDimensions, mmGroup of complication
   L S S1 H  
85 230 65 45 65 4
86 230 65 45 85 4
87 230 65 55 113 3
88 230 65 45 113 3
89 230 65 55 123 3
90 250 75 70 120  
91 250 75 65 120  
92 250 75 60 120  
93 250 75 70 140  
94 250 75 65 140  
95 250 75 60 140  
96 250 75 70 160  
97 250 75 65 160  
98 250 75 60 160  
99 250 75 55 180  
100 250 75 60 180  
101 250 75 65 180  
102 250 75 70 180  
103 250 75 55 200  
104 250 75 60 200  
105 250 75 65 200  
106 250 75 70 200