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Weden Metal Co.,Limited

Add:1105RM Rainbow Mansion, Renmin Road 23rd, Dalian, Liaoning Province, China.

Contact us:Chi Yanhui

Tel:+86-411-88858678

Fax:+86-411-82561639

Mob:+8618640867867

E-mail:dlglt@126.com


Metal Silicon grade

Weden Metal Co.,Limited | Updated: Mar 24, 2018

 Product Description

      silicon metal  

  • The silicon metal classification usually in silicon metal composition contains three main impurities of iron, aluminum, calcium content. According to the silicon metal iron, aluminum, calcium, divides into the silicon metal 553, 441, 411, 421, 411, 2202, 2502, such as different grades.

  • In industry, metal silicon is usually made from carbon dioxide in an electric furnace. The chemical reaction equation: SiO2 + 2C - Si + 2CO has a purity of 97~98%, which is called metal silicon. After it is melted and recrystallized, the impurities are removed with acid and the purity is 99.7~99.8%. 

  • Specification

 

 

Grade

Composition

Si Content

Impurities(%)

Fe

Al

Ca

P

2202

99

0.2

0.2

0.02

≤0.004%

2502

99

0.25

0.25

0.02

≤0.004%

3303

99

0.3

0.3

0.03

≤0.005%

411

99

0.4

0.1

0.1

≤0.005%

421

99

0.4

0.2

0.1

-

441

99

0.4

0.4

0.1

-

553

98.5

0.5

0.5

0.3

-