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Blocks for lining of skid pipes of reheating furnaces BFPT
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Blocks for lining of skid pipes of reheating furnaces BFPT

Blocks for lining of skid pipes of reheating furnaces BFPT as per TU 1593-062-13706960-2007 and STO 13706960-029-2010

Products manufactured from castables and thermal insulation layer, reinforced with concrete inserts are designed for thermal insulation of skid pipes of reheating furnaces at operating temperatures up to 1500ºС.

1. The outer layer of product is manufactured from structural solid concrete. Regarding physical and chemical properties the concrete must meet the requirements shown in the table below.

Properties

SShB-1

SShB-2

SShB-3

BIK

SBKM-1

Use limit, 0С

1300

1400

1500

1600

1700

Weight ratio on ignited basis, %

Al2O3, min.

30

42

56

65

70

СаО, within

2.5-3.5

2.5-3.5

2.5-3.5

3.0-5.0

3.0-5.0

Fe2O3, max.

-

3.0

2.5

3.0

2.0

Compression strength after firing, N/mm2

1000С

25

25

25

30

40

5000С

20

20

20

-

-

10000С

25

30

30

-

-

13500С

-

35

35

40

60

Thermal stability under conditions 13000С – water, thermal cycling, min.

7

10

15

15

15

2. The internal thermal insulation layer is manufactured based on the mullite-silica fibers. Regarding physical and chemical properties the thermal insulation layer must meet the requirements shown in the table below.

Properties

Rating

1. Weight ratio, %
Al2O3, min.

45

2. Apparent density, kg/m3, max.

650

3. Thermal conductivity at the mean temperature
(600+ 25)ОС, W/mК, max.


0.16

4. Compression strength, N/mm2, max.

2.0

5. Additional linear shrinkage 1000ОС,% max.

5

6. Loss on ignition 1000ОС, % max.

10

3. For manufacture of reinforcing concrete inserts the heat resistant steel of group 2 as per GOST 5632-72 Rev. 1991 is used.   

  • Уралсталь
  • Уфаоргсинтезгаз
  • Славнефтеоргсинтез
  • Северский трубный завод
  • ОГК-6
  • ОГК-2
  • ОГК-1
  • Оскольский электрометаллургический комбинат
  • Новолипецкий металлургический комбинат
  • Новокузнецкий Металлургический Комбинат,
  • Нижнекамскнефтехим
  • Магнитогорский металлургический комбинат
  • m2
  • m
  • Казцинк
  • ig
  • НижнеТагильский металлургический комбинат
  • em alliance
  • Enel
  • enrc
  • Фортум
  • Нижнесергинский метизно-металлургический завод