This standard is for GB / T 2992-1982 "General Refractory Brick Shape and Size", GB / T 1590-1979 "Magnesia Brick and Magnesia Silicon Brick Shape and Size" and GB / T 2074-1980 "For Copper Furnace "Magnesia chrome brick shape and size" revision, merged into a standard.

This standard is not equivalent to the international standard ISO 5019-1: 1984 "Refractory Brick-Dimensions-Part 1: Straight Bricks"; ISO 5019-2: 1984 "Refractory Brick-Dimensions-Part 2: Wedge Bricks"; ISO 5019 -5: 1984 "Refractory Bricks-Dimensions-Part V: Arching Bricks". In addition to the 230mm and 345mm of international standards, the length of bricks in this standard also retains 300mm, 380mm and 460mm of China, and the width of bricks is 114mm and 150mm of international standards. The thickness of the brick remains 65mm and 75mm.

This standard has made the following amendments to the above three original standards:

——The name and main size parameters of the bricks are defined in words, and shown in the drawings or formulas.

——The brick number has been modified and the code name has been cancelled.

——The calculation method in the appendix of the original standard has been simplified and improved, and rewritten as appendix A.

—— Added vertical thick wedge-shaped bricks and straight bricks with the size of 75mm and other middle refractory bricks.

——The size of the refractory bricks with arches of 230mm, 300mm and 460mm on the inclined surface has been modified. The standard inclination angle is 60 ° / 30 ° and 50 ° / ° 40.

—— Delete non-universal special-shaped refractory bricks.

This standard shall replace GB / T 2992-1982, GB / T 1590-1979, GB / T 2074-1980 from the date of implementation.

Appendix A of this standard is a standard appendix.

This standard was proposed by the original Ministry of Metallurgical Industry.

This standard is under the jurisdiction of the National Refractory Standardization Technical Committee.

This standard is drafted by: Wuhan Iron and Steel (Group) Company.

The main drafters of this standard: Xue Qiwen, Wan Xiaoping, Gong Jiaxue, Gao Jianping, Fang Zhengguo.

1 Scope

This standard specifies the definition, brick number, specification notation, size and size parameters of general refractory bricks.

This standard applies to brick lining of thermal equipment such as industrial furnaces

2. Definition

This standard uses the following definition

2.1 General refractory bricks: refers to straight bricks used in straight wall brick laying and radial bricklaying of thermal furnaces such as industrial furnaces and kilns.

2.1.1 Straight brick: straight parallelepiped brick with length b, width a and thickness c, see Figure 1

2.1.2 Side thick wedge-shaped refractory bricks (referred to as side wedge-shaped bricks): the distance b between the large and small ends is designed in the width, and the size of the large and small ends a is large / a small is shown in the figure:

2.1.3. Vertical thick wedge bricks (referred to as vertical wedge bricks :) The distance b between the small and large ends is designed in length, and the size of the large and small ends is a large / small is designed in the thickness of the wedge bricks, see Figure 3:

2.1.4 Vertical and wide wedge bricks (abbreviated as wide wedge bricks): Wedge bricks with distance b at the large end designed in length and large a / a small at the end, see Figure 4

2.1.5. Arch foot refractory bricks: less than the load-bearing seat bricks on both sides of the semicircular vault brickwork, see Figure 5.

                             GB / T 2992——1998

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 Figure 3 Vertical thick wedge row bricks Figure 4 Vertical wide wedge row bricks

                               Figure 5 Arch brick

2.2. The average size of the average size of the size of the middle size wedge row brick.

3. Brick number and specification notation

3.1. Brick number T is the prefix of the common brick Chinese pinyin, followed by the short horizontal line is the sequence number.

3.2 Specification notation:

3.2.1 The specifications of straight refractory bricks are expressed in b × a × c.

3.2.2 The specification of wedge-shaped refractory brick is expressed by b × (a large / a small) × c.

3.2.3 The dimensions of the arch foot refractory brick are expressed by L × a × c.

4. Dimension and size parameters of refractory brick

4.1 The brick number, size, specifications and size parameters of straight bricks (see Figure 1) shall be as specified in Table 1.

4.2 The brick number, size, specifications and dimensional parameters of the side-thick wedge bricks (see Figure 2) shall be as specified in Table 2.

4.3 The brick number, size, specifications and dimensional parameters of vertical thick wedge row bricks (see Figure 3) shall be as specified in Table 3.

4.4 The brick number, size, specifications and dimensional parameters of vertical wide wedge bricks (see Figure 4) shall be as specified in Table 4.

4.5 The brick number, size, specifications and dimensional parameters of arch foot bricks (see Figure 5) shall be as specified in Table 5.

                                   GB / T 2992——1998

Table 1 Straight Brick

old

country

Mark

brick

number

size

mm

specification

mm

area

㎝

Smelt

Mark

The building size is a

b

a

c

65

75

114

150

Tz-1

T-1

172

114

65

172 × 114 × 65

1274.5

T-14

Tz-2

T-2

230

114

32

230 × 114 × 32

839.0

Tz-3

T-3

230

114

65

230 × 114 × 65

10.50

18.30

1704.3

T-3

Tz-4

T-4

230

172

65

230 × 172 × 65

10.50

2571.4

T-9

Tz-5

T-5

172

114

75

172 × 114 × 75

1470.6

T-13

Tz-6

T-6

230

114

75

230 × 114 × 75

12.10

18.30

1966.5

T-2

T-7

230

150

75

230 × 150 × 75

24.03

2587.5

R1

T-8

230

172

75

230 × 172 × 75

12.10

2967.0

T-8

Tz-7

T-9

300

150

65

300 × 150 × 65

2925.0

T-7

Tz-8

T-10

300

150

75

300 × 150 × 75

3375.0

Tz-9

T-11

300

225

75

300 × 225 × 75

12.10

5062.5

T-12

345

114

65

345 × 114 × 65

18.30

2556.5

T-13

345

150

75

345 × 150 × 75

24.03

3881.3

R2

T-14

380

150

65

380 × 150 × 65

10.65

3705.0

T-15

380

150

75

380 × 150 × 75

12.26

4275.0

T-16

380

225

75

380 × 225 × 75

12.26

6412.5

T-17

460

150

65

460 × 150 × 65

4485.0

T-18

460

150

75

460 × 150 × 75

12.26

5175.0

T-19

460

225

75

460 × 225 × 75

12.26

7762.5

Metallurgical standard: T6 250 × 123 × 65 T10 250 × 186 × 75 T16 186 × 123 × 65

        T1 230 × 113 × 100 T11 250 × 186 × 65 T79 460 × 230 × 75

        T4 230 × 113 × 40 T12 300 × 225 × 65 T80 575 × 170 × 80

        T5 250 × 123 × 75 T15 186 × 123 × 75 T81 690 × 170 × 100

                                                        T82 460 × 135 × 113

                                 GB / T 2992——1998

Table 2. Side thick wedge row bricks (horizontal rotation)

old

country

Mark

brick

number

size

㎜

specification

㎜

Outer radius

(A large + δ) b

RC = ——————

    a large-a small

Limit blocks per ring

2 × 3.14b

K´wedge = ——————

      a large-a small

Tilt angle

180 (a large-a small)

θC = ——————

    3.14 × b

volume

㎝

Smelt

Mark

b

a large / a small

c

Tc-21

T-21

114

65/35

230

114 × （65/35） × 230

250.8

23.876

15.078

1311.0

Tc-22

T-22

114

65/45

230

114 × （65/45） × 230

376.2

35.814

10.052

1442.1

T-39

Tc-23

T-23

114

 65/55

230

114 × （65/55） × 230

752.4

71.628

5.026

1375.2

T-38

Tc-24

T-24

114

75/45

230

114 × （75/45） × 230

288.8

23.876

15.078

1573.2

Tc-25

T-25

114

75/55

230

114 × （75/55） × 230

433.2

35.814

10.052

1704.3

T-37

Tc-26

T-26

114

75/65

230

114 × （75/65） × 230

866.4

71.628

5.026

1835.4

T-36

Tc-27

T-27

150

65/35

300

150 × （65/35） × 300

330.0

31.416

11.459

2250.0

Tc-28

T-28

150

65/45

300

150 × （65/45） × 300

495.0

47.124

7.639

2473.0

Tc-29

T-29

150

65/55

300

150 × （65/55） × 300

990.0

94.248

3.820

2700.0

Tc-30

T-30

150

75/45

300

150 × （75/45） × 300

380.0

31.116

11.459

2700.0

Tc-31

T-31

150

75/55

300

150 × （75/55） × 300

570.0

47.124

7.639

2925.0

Tc-32

T-32

150

75/65

300

150 × （75/65） × 300

1140.0

94.248

3.820

3150.0

Note: In the calculation formula of the outer radius Rc, the thickness δ of the brick joint is taken as 1 mm.

Table 3 Vertical thick wedge row bricks (vertical rotation)

old

country

Mark

brick

number

size

mm

specification

mm

Outer radius

(A large + δ) b

RC = ——————

    a large-a small

Limit blocks per ring

2 × 3.14b

K´wedge = ——————

      a large-a small

Tilt angle

180 (a large-a small)

θC = ——————

    3.14 × b

volume

㎝

Smelt

Mark

b

a large / a small

c

Ts-41

T-41

230

65/35

114

230 × （65/35） × 114

506.0

48.171

7.473

1311.0

Ts-42

T-42

230

65/45

114

230 × （65/45） × 114

759.0

72.257

4.982

1442.1

T-20

Ts-43

T-43

230

65/55

114

230 × （65/55） × 114

1518.0

144.514

2.491

1573.2

T-19

Ts-44

T-44

230

65/60

114

230 × （65/60） × 114

3036.0

289.072

1.246

1638.8

Ts-45

T-45

230

65/35

172

230 × （65/35） × 172

506.0

48.171

7.4