关键词: 炼钢渣, 变价元素, 金属, 化学定量分析

Abstract: Based on the limitation of present physical quantitative analysis of phases and the necessity of chemical analysis of various ions of transition metals in steelmaking slag, the general designed process of chemical phase analysis is summarized as follows: the total amount of analyzed element and its qualitative and semi-quantitative analysis at different valence states should be obtained first, then the leaching and analysis process of metal element at a mono-valence state in slag or simultaneous leaching of the meatal at different valence states is designed, and selective analytical methods or calculation will be applied in determination of its accurate amount in each state. Morever, the principle and technique progress in chemical quantitative analysis of Fe, Cr, V, Ti and Nb at various valence states in steelmaking slag are reviewed, and the advantages and disadvantages of different methods discussed. The phase transforming and dissolving methods, and electrochemical polarography would be the analysis trend of various ions of transition metals in slag. But it is necessary to analyze the specific research systems sometimes.

Key words: steelmaking slag, variable valence element, metal, chemical quantitative analysis