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山东国茂
山东国茂

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Tundish covering agents

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Tundish covering agents

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Product description
Parameters

Tundish covering agents are divided into powder granule and hollow granule. Hollow granules feature good fluidity, better thermal insulation, and durability without crusting. See the following table for physical and chemical indexes and applicable steel varieties.

Plain Tundish Covering Agent (PTF-1)

 

Chemistry
Analysis

Alkalinity R

CaO%

SiO2 %

Al2O3%

Fe2O3%

MgO%

TC %

0.8~2.5

20~40

18~45

5~10

  <3

4~8

≤10

Physical
Metrics

Test Density  g/cm3

Melting point ℃

Moisture%

Particle shape

Applicable steel grades

0.6~1.6

<1400

<0.8

Hollow granules or powder

Medium and high carbon steel

High alkalinity low carbon low silicon tundish covering agent (DDF- 1)

Chemistry
Analysis

Alkalinity R

CaO%

SiO2 %

Al2O3%

Fe2O3%

MgO%

TC  %

>7

35~48

<6

33~40

  <3

<10

<5.0

Physical
Metrics

Test Density  g/cm3

Melting point ℃

Moisture%

Particle shape

Applicable steel grades

1.0~1.8

<1450

<0.8

<2mm powder

Mild steel, ultra-low carbon steel
Pipeline steel, etc.

 

High alkalinity carbon-free low-silicon tundish covering agent (DDF- 2)

 

Chemistry
Analysis

Alkalinity R

CaO%

SiO2 %

Al2O3%

Fe2O3%

MgO%

TC  %

>7

40~48

<6

30~40

  <3

<8

<1.0

Physical
Metrics

Test Density  g/cm3

Melting point ℃

Moisture%

Particle shape

Applicable steel grades

1.0~1.8

<1450

<0.8

<2mm powder

Mild steel, ultra-low carbon steel
Pipeline steel, etc.

 

Low Carbon Tundish Covering Agent (DDF-3)

 

Chemistry
Analysis

Alkalinity R

CaO%

SiO2 %

Al2O3%

Fe2O3%

MgO%

TC  %

1.0~2.0

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