Ferro alloy
Smelting Aluminum And Steel Metallurgical Silicon Metal 553 #441#3303#2202#
The classification of metallic silicon is usually based on the content of iron, aluminum and calcium. According to the content of Fe, AL and CA in silicon metal, silicon metal can be divided into 5...
DESCRIPTION
The classification of metallic silicon is usually based on the content of iron, aluminum and calcium. According to the content of Fe, AL and CA in silicon metal, silicon metal can be divided into 553,441,411,421,3303,3305,2202,2502,1501,1101 and so on. In industry, metallic silicon is usually made from carbon silicon dioxide in an electric furnace. Chemical equation: Silicon from SIO2 + 2C → SI + 2CO is 97-98% pure silicon, called metallic silicon. After melting and recrystallization, 99.7 ~ 99.8% silicon metal was obtained by removing impurities with acid.
| Silicon Metal Lump | Si(≥) | Fe(≤) | Al(≤) | Ca(≤) |
| % | ||||
| 553 | 98.50 | 0.5 | 0.5 | 0.3 |
| 521 | 99.0 | 0.5 | 0.2 | 0.1 |
| 441 | 99.0 | 0.4 | 0.4 | 0.1 |
| 421 | 99.0 | 0.4 | 0.2 | 0.1 |
| 411 | 99.0 | 0.4 | 0.1 | 0.1 |
| 3303 | 99.2 | 0.3 | 0.3 | 0.03 |
| 2202 | 99.5 | 0.2 | 0.2 | 0.02 |
| 1101 | 99.5 | 0.1 | 0.1 | 0.01 |
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