けい X 光線スペクトル観察によるスラグの状態分析

概要

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X-ray fluorescence spectroscopy was applied to BF and LD slags. The following points were deduced from the results. 1) It is estimated from Si K_α energy shifts that the basicity of the BF slag is nearly equal to that of the alkali metal orthosilicate, while that of the LD slag is somewhat larger. This is consistent with the results of the chemical analysis of these slags. 2) The coordination number of aluminium in the slag is expected to be 4 which is reasonable considering the basic nature of the slag. 3) Ca K_α shifts indicate that calcium is present mainly as calcium orthosilicate in the BF slag. On the other hand, in the LD slag the shift is more positive than that of the BF slag. Thus, the value implys the presence of free CaO, in accordance with chemical analysis. 4) Chemical shifts of Mn K_<β1, 3> and K_<α1> show that manganese is present as divalention (probably MnO). 5) From the mathematical separation of the profile of S K_α spectra, the sulfate/sulfide ratio is evaluated. The sulfate content is about 45 and 20% in the LD and BF slags respectively.
社団法人日本鉄鋼協会の論文
1979-01-01