Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR RECOVERING VALUABLES FROM DEPHOSPHORIZED SLAG
PROBLEM TO BE SOLVED: To efficiently recover valuables such as granular iron and iron oxide from dephosphorized slag, while excluding phosphorus, which is difficult to reuse.SOLUTION: A method for recovering valuables from dephosphorized slag comprises: pulverizing dephosphorized slag 1 having a basicity of 1.5-2.5 after dephosphorization, to make it become slug having a sold-liquid ratio of 0.20 or less after the pulverization; and performing a wet magnetic separation for the slug to recover valuables 2 including granular iron and iron oxide, from the dephosphorized slag 1. In the method for recovering valuables from the dephosphorized slag 1, the dephosphorized slag 1 is pulverized so that a relationship between a granular diameter D, and a magnetic field intensity G becomes within a range of a formula (1), where the Dis the granular diameter of the dephosphorized slag 1 after the pulverization, while the G is the magnetic field intensity G at the wet magnetic separation.SELECTED DRAWING: Figure 1
【課題】 脱りんスラグから再利用が困難なりんを排除して、効率良く粒鉄や酸化鉄などの有価物を回収する。【解決手段】本発明の脱りんスラグからの有価物回収方法は、脱りん後にＣ／Ｓが１．５〜２．５となる脱りんスラグ１を粉砕し、粉砕後の脱りんスラグ１を固液比が０．２０以下となるように含むスラリーとし、当該スラリーを湿式で磁選することにより、脱りんスラグ１から粒鉄又は酸化鉄を含む有価物２を回収する脱りんスラグ１の有価物回収方法であって、粉砕後の脱りんスラグ１の粒径をＤ50とし、湿式で磁選する際の磁場の強さをＧとした場合に、粒径Ｄ50と磁場の強さＧとの関係を、式（１）の範囲とする。【選択図】図１
METHOD FOR RECOVERING VALUABLES FROM DEPHOSPHORIZED SLAG
PROBLEM TO BE SOLVED: To efficiently recover valuables such as granular iron and iron oxide from dephosphorized slag, while excluding phosphorus, which is difficult to reuse.SOLUTION: A method for recovering valuables from dephosphorized slag comprises: pulverizing dephosphorized slag 1 having a basicity of 1.5-2.5 after dephosphorization, to make it become slug having a sold-liquid ratio of 0.20 or less after the pulverization; and performing a wet magnetic separation for the slug to recover valuables 2 including granular iron and iron oxide, from the dephosphorized slag 1. In the method for recovering valuables from the dephosphorized slag 1, the dephosphorized slag 1 is pulverized so that a relationship between a granular diameter D, and a magnetic field intensity G becomes within a range of a formula (1), where the Dis the granular diameter of the dephosphorized slag 1 after the pulverization, while the G is the magnetic field intensity G at the wet magnetic separation.SELECTED DRAWING: Figure 1
【課題】 脱りんスラグから再利用が困難なりんを排除して、効率良く粒鉄や酸化鉄などの有価物を回収する。【解決手段】本発明の脱りんスラグからの有価物回収方法は、脱りん後にＣ／Ｓが１．５〜２．５となる脱りんスラグ１を粉砕し、粉砕後の脱りんスラグ１を固液比が０．２０以下となるように含むスラリーとし、当該スラリーを湿式で磁選することにより、脱りんスラグ１から粒鉄又は酸化鉄を含む有価物２を回収する脱りんスラグ１の有価物回収方法であって、粉砕後の脱りんスラグ１の粒径をＤ50とし、湿式で磁選する際の磁場の強さをＧとした場合に、粒径Ｄ50と磁場の強さＧとの関係を、式（１）の範囲とする。【選択図】図１
METHOD FOR RECOVERING VALUABLES FROM DEPHOSPHORIZED SLAG
脱りんスラグからの有価物回収方法
TSUSHIMA TAKU (Autor:in) / TSUSHIMO OSAMU (Autor:in)
24.11.2017
Patent
Elektronische Ressource
Japanisch
IPC:
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
B03C
Magnetische oder elektrostatische Trennung fester Stoffe von festen Stoffen oder flüssigen oder gasförmigen Medien
,
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
/
C04B
Kalk
,
LIME
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
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