| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention can be used for production of ultrapure silicon. Initial material melt containing SiO2 with stibium, mercury and sulfur is subjected to electrolysis to obtain silicon solution. Obtained silicon solution is rinsed by solvents that dissolve easily elementary sulfur to remove the latter. Residue produced after rinsing at stage b) is treated by strong acid to remove dopant ions. Then precipitate is treated by reducing agent to reduce mercury and/or stibium salts. Separation by specific weight is performed to separate silicon from other components. ^ EFFECT: ultrapure silicon with specific resistance of up to 8000 Ohmcm. ^ 13 cl, 5 ex |
