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Title: THERMAL STUDIES OF THE PROCESS OF INTERACTION OF TIN OXIDE, LEAD AND ANTIMONY WITH SODIUM PHOSPHATES
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THERMAL STUDIES OF THE PROCESS OF INTERACTION OF TIN OXIDE, LEAD AND ANTIMONY WITH SODIUM PHOSPHATES
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1314-2704
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English
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17
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To study the process of refining of crude antimony containing as hard-to-remove admixtures of lead and tin, thermal studies of model and experimental samples of antimony were carried out. As a refining reagent, a melt prepared from sodium dihydrogen phosphate and orthophosphoric acid was used.
The results of the study showed that the lead oxide after the process of dehydration and dehydration of sodium phosphate salts at 760 °C interacts with the decomposition product of the refining reagent to form stable phosphorus compounds, the antimony oxide (III) is oxidized to an antimony oxide (V) with increasing temperature and does not interact with the refining reagent. Thermal study of the Sb-Sn alloy (95.87 %-4.13 %) with a refining reagent showed tin oxidation at 1500 °C. Thermal study of rough antimony showed intensive oxidation of rough antimony over 700 °?. The reasons for the loss of antimony are explained with the transition of the oxidized part of antimony to the slag with increasing temperature and the formation of complex phosphates. |
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conference
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17th International Multidisciplinary Scientific GeoConference SGEM 2017
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17th International Multidisciplinary Scientific GeoConference SGEM 2017, 29 June - 5 July, 2017
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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1133-1142
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29 June - 5 July, 2017
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website
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cdrom
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2464
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antimony; refining; impurity; tin; lead
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