轻质砖/Lightweight brick

2024-05-14

轻质砖/Lightweight brick

轻质粘土隔热耐火砖

项目

指 标

NG-1.5

NG-1.3

NG-1.0

NG-0.9

NG-0.8

NG-0.7

NG-0.6

NG-0.5

NG-0.4

体积密度g/cm3

1.5

1.3

1.0

0.9

0.8

0.7

0.6

0.5

0.4

常温耐压强度 MPa

6

4.5

3.0

2.5

2.5

2.0

1.5

1.2

1.0

重烧线变化 x12h不大于2%

1400

1400

1350

1300

1250

1250

1200

1150

1150

导热系数(350±25℃)不大于

0.7

0.6

0.5

0.4

0.35

0.35

0.25

0.25

0.2

 

轻质高铝隔热耐火砖

项目

指标

LG-1.0

LG-0.9

LG-0.8

LG-0.7

LG-0.6

LG-0.5

LG-0.4

Al2O3

不小于48%

Fe2O3

不大于 2%

体积密度g/cm3不大于

1.0

0.9

0.8

0.7

0.6

0.5

0.4

耐压强度MPa不小于

4

3.5

3.0

2.5

2.0

1.5

0.8

重烧线变化x12h 不大于 1%

1400

1400

1400

1350

1350

1250

1250

导热系数w/m.k(350±25℃) 不大于

0.5

0.45

0.35

0.35

0.3

0.25

0.2

 

轻质漂珠砖理化指标

项目

指 标

耐火度 ℃

≥1650

体积密度 g/cm3

≤1.0

耐压强度 MPa

≥10

重烧线变化 % 1250℃X12h

≤2

导热系数 W/m.k 350±25℃

≤0.5

 

 

轻质砖/Lightweight brick

Lightweight clay insulated firebrick

Item

Index

NG-1.5

NG-1.3

NG-1.0

NG-0.9

NG-0.8

NG-0.7

NG-0.6

NG-0.5

NG-0.4

Bulk densityg/cm3

1.5

1.3

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Compressive strength at room temperature MPa

6

4.5

3.0

2.5

2.5

2.0

1.5

1.2

1.0

Heavy burn line change x12hNot more than 2%

1400

1400

1350

1300

1250

1250

1200

1150

1150

Thermal conductivity(350±25℃)Not more than

0.7

0.6

0.5

0.4

0.35

0.35

0.25

0.25

0.2

 

Lightweight high aluminum heat insulating firebrick

Item

Index

LG-1.0

LG-0.9

LG-0.8

LG-0.7

LG-0.6

LG-0.5

LG-0.4

Al2O3

No less than48%

Fe2O3

Not more than 2%

Bulk densityg/cm3Not more than

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Compressive strengthMPaNo less than

4

3.5

3.0

2.5

2.0

1.5

0.8

Heavy burn line changex12h Not more than 1%

1400

1400

1400

1350

1350

1250

1250

Thermal conductivityw/m.k(350±25℃) Not more than

0.5

0.45

0.35

0.35

0.3

0.25

0.2

 

 

Physical and chemical index of lightweight bleached bead brick

Item

Index

Refractoriness ℃

≥1650

Bulk density g/cm3

≤1.0

Compressive strength MPa

≥10

Heavy burn line change % 1250℃X12h

≤2

Thermal conductivity W/m.k 350±25℃

≤0.5