FIELD: metallurgy.
SUBSTANCE: method includes melt treatment in the presence of flux consisting of sodium bicarbonate and limestone in the ratio of 1:1, at silicon temperature above 1600°C with oxidizing gases, at that 45-60% of flux are loaded into a ladle, then silicon is tapped into the ladle, the remaining flux is loaded as the ladle is filled at equal time intervals. The amount of flux charged into the ladle is 6-11% of the silicon weight in the ladle.
EFFECT: improved quality of the technical silicon due to reduced phosphorus content.
1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PURIFICATION OF METALLURGICAL SILICON | 2016 |
|
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| METHOD FOR REMOVING IMPURITIES FROM FERROSILICIUM MELT | 2022 |
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| METHOD OF PURIFYING MOLTEN FERROSILICON FROM IMPURITIES | 2019 |
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| METHOD OF PURIFYING TECHNICAL SILICON | 2017 |
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| METHOD OF REFINING FERROSILICON FROM ALUMINUM | 2018 |
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| METHOD FOR TECHNICAL SILICON MELTING | 2016 |
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| METHOD FOR PRODUCTION OF SHEETS OF NON-ORIENTED ELECTRICAL STEEL HAVING EXCELLENT MAGNETIC PROPERTIES | 2016 |
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| STEEL-MELTING "ECOSLAG" FLUX AND METHOD OF ITS PRODUCTION AND APPLICATION | 2016 |
|
RU2637839C1 |
| CONTROL OVER ULTRA-LOW TITANIUM CONTENT IN ULTRA-LOW-CARBON Al-Si KILLED STEEL | 2011 |
|
RU2527569C2 |
| METHOD OF EXTRACTING METALLIC SILICON FROM TECHNICAL GRADE SLAG | 2018 |
|
RU2690877C1 |
