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Silicon hlau yog cov khoom lag luam tseem ceeb heev tuaj yeem siv rau hauv kev tsim steel, cam khwb cia hlau, txhuas (aviation, aircraft & tsheb qhov chaw tsim khoom), thiab silicon optoelectronic ntaus ntawv thiab ntau lwm yam lag luam. Nws yog lub npe hu ua "ntsev" ntawm niaj hnub kev lag luam. Hlau silicon yog tsim los ntawm quartz thiab coke nyob rau hauv hluav taws xob cua sov rauv smelting khoom. Cov khoom tseem ceeb ntawm silicon cov ntsiab lus yog li 98%. Qhov seem ntawm impurities yog hlau, txhuas thiab calcium thiab lwm yam.
Silicon hlau pob yog tsim nyob rau hauv hluav taws xob cua sov rauv los ntawm quartz thiab coke. Quartz yuav redox thiab ua molten silicon kua. Tom qab txias, nws yuav khov raws li peb pom. Lub primal silicon hlau pob yog loj heev. Tom qab ntawd nws yuav ua rau hauv cov pob me me uas peb hu ua tus qauv loj. Silicon Hlau Lumps yuav yog 10-100mm.
| Qib | Tshuaj muaj pes tsawg leeg (%) | ||||
| Si | Fe | Al | Ca | P | |
| > | ≤ | ||||
| 1515 | 99.6% | 0.15 | - | 0.015 | 0.004 |
| 2202 | 99.5% | 0.2 | 0.2 | 0.02 | 0.004 |
| 2203 | 99.5% | 0.2 | 0.2 | 0.03 | 0.004 |
| 2503 | 99.5% | 0.2 | - | 0.03 | 0.004 |
| 3103 | 99.4% | 0.3 | 0.1 | 0.03 | 0.005 |
| 3303 | 99.3% | 0.3 | 0.3 | 0.03 | 0.005 |
| 411 | 99.2% | 0.4 | 0.04-0.08 | 0.1 | - |
| 421 | 99.2% | 0.4 | 0.1-0.15 | 0.1 | - |
| 441 | 99.0% | 0.4 | 0.4 | 0.1 | - |
| 553 | 98.5% | 0.5 | 0.5 | 0.3 | - |
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