METHOD OF MELTING OF SILICON AND ITS ALLOYS

FIELD: metallurgy, electrothermal production of silicon and its alloys. SUBSTANCE: silicides of iron, aluminium and calcium are changed to a water-soluble state during silicon tapping from furnace into a ladle or ingot mould by introduction of chlorides of alkali metals onto the surface of liquid si...

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Main Authors PAK R.V, ELKIN D.K, STARIKOV S.V, VOROB'EV V.P, ELKIN K.S, DOLININ D.I, IL'IN V.N
Format Patent
LanguageEnglish
Russian
Published 10.04.1996
Subjects
CHEMISTRY
COMPOUNDS THEREOF
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:FIELD: metallurgy, electrothermal production of silicon and its alloys. SUBSTANCE: silicides of iron, aluminium and calcium are changed to a water-soluble state during silicon tapping from furnace into a ladle or ingot mould by introduction of chlorides of alkali metals onto the surface of liquid silicon and subsequent washing of crushed silicon with water. EFFECT: enhanced quality of silicon. Изобретение относится к металлургии, а точнее к электротермическому получению кремния и его сплавов. Предложен способ повышения качества кремния за счет перевода силицидов железа, алюминия и кальция в водорастворимое состояние во время выпуска кремния из печи в ковш или изложницу путем введения на поверхность жидкого кремния хлоридов щелочных металлов с последующей промывкой дробленого кремния водой.
Bibliography:Application Number: RU19940018063