Activity model and its application in quarternary system CaO-FeO-SiO2-WO3

Autor:	Pei-min Guo, Zheng-bang Li, Pei Zhao
Rok vydání:	2010
Předmět:	Coexistence theory Yield (engineering) Silicon Metallurgy Metals and Alloys chemistry.chemical_element Slag Tungsten chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials visual_art Scheelite Metallic materials Materials Chemistry visual_art.visual_art_medium Carbon
Zdroj:	Journal of Iron and Steel Research International. 17:12-17
ISSN:	2210-3988 1006-706X
DOI:	10.1016/s1006-706x(10)60037-4
Popis:	The activity model of CaO-FeO-SiO2-WO3 quarternary system is built according to the coexistence theory of slag structure and the reduction thermodynamics of scheelite is discussed by using this model. The activities of SiO2 and WO3 decrease, while the activity of CaO increases with increasing the basicity of slag. Among SiC, carbon and silicon reactants, the reducing capability of SiC is the strongest, while that of carbon is the poorest at high temperature (about 1873 K). Increasing the content of silicon or carbon is beneficial for increasing the yield of tungsten. Oxidizability of slag has a significant effect on the yield of tungsten. Controlling basicity and oxidizability of slag can decrease the oxidation loss of tungsten.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::36ae5227f1c8dc3483e1cf07cb60905a https://doi.org/10.1016/s1006-706x(10)60037-4 Zobrazit plný text záznamu Full Text from ScienceDirect Full text from SpringerLink