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METHOD FOR RECOVERING VALUABLE ARTICLES FROM DEPHOSPHORIZED SLAG
PROBLEM TO BE SOLVED: To recover valuable articles such as granular iron or iron oxide at good efficiency by eliminating phosphorus which is hard to be recycled from a dephosphorized slag.SOLUTION: The method for recovering valuable articles from a dephosphorized slag, which recovers valuable articles containing granular iron or iron oxide from the dephosphorized slag by pulverizing the dephosphorized slag with C/S of 1.5 to 2.5 after dephosphorization and magnetically separating the same by a dry process after pulverization, the dephosphorized slag is pulverized to have median diameter Dof particles of the dephosphorized slag of 250 μm or less and magnetically separated so that a prescribed relationship is established when strength of magnetic field during conducting magnetic separation is G [G].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となっている脱りんスラグを粉砕し、粉砕後に乾式で磁選することにより、脱りんスラグから粒鉄又は酸化鉄を含む有価物を回収する脱りんスラグの有価物回収方法であって、脱りんスラグを、当該脱りんスラグの粒子の中位径Ｄ50が250μｍ以下となるように粉砕し、磁選を行うに際の磁場の強さをＧ［G］とした場合に、所定の関係が成立するように磁選を行うことを特徴とする。【選択図】図１
METHOD FOR RECOVERING VALUABLE ARTICLES FROM DEPHOSPHORIZED SLAG
PROBLEM TO BE SOLVED: To recover valuable articles such as granular iron or iron oxide at good efficiency by eliminating phosphorus which is hard to be recycled from a dephosphorized slag.SOLUTION: The method for recovering valuable articles from a dephosphorized slag, which recovers valuable articles containing granular iron or iron oxide from the dephosphorized slag by pulverizing the dephosphorized slag with C/S of 1.5 to 2.5 after dephosphorization and magnetically separating the same by a dry process after pulverization, the dephosphorized slag is pulverized to have median diameter Dof particles of the dephosphorized slag of 250 μm or less and magnetically separated so that a prescribed relationship is established when strength of magnetic field during conducting magnetic separation is G [G].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となっている脱りんスラグを粉砕し、粉砕後に乾式で磁選することにより、脱りんスラグから粒鉄又は酸化鉄を含む有価物を回収する脱りんスラグの有価物回収方法であって、脱りんスラグを、当該脱りんスラグの粒子の中位径Ｄ50が250μｍ以下となるように粉砕し、磁選を行うに際の磁場の強さをＧ［G］とした場合に、所定の関係が成立するように磁選を行うことを特徴とする。【選択図】図１
METHOD FOR RECOVERING VALUABLE ARTICLES FROM DEPHOSPHORIZED SLAG
脱りんスラグからの有価物回収方法
TSUSHIMA TAKU (author) / TSUSHIMO OSAMU (author)
2017-12-07
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
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
/
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
C21C
Weiterverarbeiten von Roheisen, z.B. Feinen, Herstellen von Schweißeisen oder Stahl
,
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL
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