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CARBONATION TREATMENT METHOD OF STEEL SLAG
PROBLEM TO BE SOLVED: To provide a method capable of surely and effectively conducting a carbonation treatment in a method for carbonate treatment of a steel slag by supplying CO-containing gas containing carbon dioxide to the steel slag and adding mechanical agitation.SOLUTION: There is provided a carbonation treatment of a steel slag including agitation by mechanical means so that reduction percentage before and after the carbonation treatment between mass fraction of slag particles having particle size of 2.36 mm or less contained in the steel slag before the carbonation treatment (T) and mass fraction of slag particles having particle size of 2.36 mm or less contained in the steel slag obtained by the carbonation treatment (T), [[(T-T)/T]×100], becomes less than 30%.SELECTED DRAWING: Figure 7
【課題】製鋼スラグに二酸化炭素を含有するＣＯ2含有ガスを供給し、機械撹拌を付与して製鋼スラグを炭酸化処理する方法において、炭酸化処理を確実に、かつ効率良く行うことができる方法を提供する。【解決手段】炭酸化処理前の製鋼スラグに含まれる粒径２．３６ｍｍ以下のスラグ粒の質量分率(T1)と炭酸化処理して得られた処理済スラグに含まれる粒径２．３６ｍｍ以下のスラグ粒の質量分率(T2)との炭酸化処理前後の減少割合〔[(T1-T2)/T1]?100〕が、３０％未満となるように機械的手段で攪拌することを特徴とする製鋼スラグの炭酸化処理方法である。【選択図】図７
CARBONATION TREATMENT METHOD OF STEEL SLAG
PROBLEM TO BE SOLVED: To provide a method capable of surely and effectively conducting a carbonation treatment in a method for carbonate treatment of a steel slag by supplying CO-containing gas containing carbon dioxide to the steel slag and adding mechanical agitation.SOLUTION: There is provided a carbonation treatment of a steel slag including agitation by mechanical means so that reduction percentage before and after the carbonation treatment between mass fraction of slag particles having particle size of 2.36 mm or less contained in the steel slag before the carbonation treatment (T) and mass fraction of slag particles having particle size of 2.36 mm or less contained in the steel slag obtained by the carbonation treatment (T), [[(T-T)/T]×100], becomes less than 30%.SELECTED DRAWING: Figure 7
【課題】製鋼スラグに二酸化炭素を含有するＣＯ2含有ガスを供給し、機械撹拌を付与して製鋼スラグを炭酸化処理する方法において、炭酸化処理を確実に、かつ効率良く行うことができる方法を提供する。【解決手段】炭酸化処理前の製鋼スラグに含まれる粒径２．３６ｍｍ以下のスラグ粒の質量分率(T1)と炭酸化処理して得られた処理済スラグに含まれる粒径２．３６ｍｍ以下のスラグ粒の質量分率(T2)との炭酸化処理前後の減少割合〔[(T1-T2)/T1]?100〕が、３０％未満となるように機械的手段で攪拌することを特徴とする製鋼スラグの炭酸化処理方法である。【選択図】図７
CARBONATION TREATMENT METHOD OF STEEL SLAG
製鋼スラグの炭酸化処理方法
FUKUYAMA HIROYUKI (author) / TAKAHASHI SHIGEKI (author) / ABE YOICHI (author)
2016-03-22
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
High-temperature steel slag carbonation deep stabilization treatment device and method
| European Patent Office | 2020
| European Patent Office | 2022