Method for smelting metal antimony from sodium sulfantimonate

The invention discloses a method for smelting metal antimony from sodium sulfantimonate. The method comprises the following steps: (1) crystalizing the sodium sulfantimonate for 1-5 hours at 150-200 DEG C, dehydrating, so as to obtain anhydrous sodium sulfantimonate or sodium sulfantimonate crystal...

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Bibliographische Detailangaben
Hauptverfasser:	MAN LUMEI, ZHAN HAIHONG, KE JIANHUA, HE HOUHUA, XIE YINGBANG, LUO CHAOWEI, HUANG JINWEN, HE HANGJUN
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses a method for smelting metal antimony from sodium sulfantimonate. The method comprises the following steps: (1) crystalizing the sodium sulfantimonate for 1-5 hours at 150-200 DEG C, dehydrating, so as to obtain anhydrous sodium sulfantimonate or sodium sulfantimonate crystal with less crystal water, cooling and grinding into powder, so as to obtain anhydrous sodium sulfantimonate powder; and (2) adding iron scrap into the anhydrous sodium sulfantimonate powder, wherein the addition amount of the iron scrap is calculated according to a formula that Fe/Sb equal to 1.34-1.51; evenly mixing, performing high-temperature smelting at the temperature of 950-1050 DEG C, preserving heat for 20-50 minutes, stirring once, taking out and pouring into a die, so as to obtain crude metal antimony and furnace slag. By adopting the method, the crude antimony containing 87%-95% of antimony can be obtained, and the direct recovery rate of antimony is up to 94%.