Ferro alloy
Aluminium Alloy Melting Industrial Silicon Metal
Silicon metal, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloy. Silicon metal is smelted from quartz and coke in an electric furnace, wi...
DESCRIPTION
Silicon metal, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloy. Silicon metal is smelted from quartz and coke in an electric furnace, with about 98% silicon. Silicon metal is mainly composed of silicon, so it has similar properties to silicon. Silicon has two allotropes: amorphous silicon and crystalline silicon. Amorphous silicon is a gray-black powder, which is actually a kind of microcrystal. Crystalline silicon has the crystal structure and semiconductor property of diamond, with a melting point of 1410°C, a boiling point of 2355°C, a Mohs hardness of 7; thus, it is brittle. Amorphous silicon is chemically active and can burn furiously in oxygen. It can react with non-metals such as halogen, nitrogen and carbon at high temperatures, and can also react with metals such as magnesium, calcium and iron to form silicide.
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Specification
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Si
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Fe
|
Al
|
Ca
|
P
|
|
2202
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＞99.5
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≤0.2
|
0.2
|
0.02
|
0.004
|
|
3303
|
＞99.3
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≤0.3
|
0.3
|
0.03
|
0.005
|
|
441
|
＞99.2
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≤0.4
|
0.04-0.08
|
0.1
|
–
|
|
421
|
＞99.2
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≤0.4
|
0.1-0.15
|
0.1
|
–
|
|
553
|
＞98.5
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≤0.5
|
0.5
|
0.3
|
–
|
|
Off Grade
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＞97.0%
|
≤1.0%
|
≤1.0%
|
≤1.0%
|
–
|
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