METHOD FOR ELUTING CALCIUM FROM STEEL-MAKING SLAG, METHOD FOR COLLECTING CALCIUM FROM STEEL-MAKING SLAG, AND DEVICE FOR ELUTING CALCIUM FROM STEEL-MAKING SLAG

The purpose of the present invention is to provide a method for eluting calcium from a steel-making slag, with which a larger amount of calcium can be easily eluted from the steel-making slag to an aqueous solution containing carbon dioxide. To this end, the present invention relates to a method for...

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Main Authors IWAMIZU, Yoshiharu, SORATA, Yusuke, ASABA, Akihiro, FUKUI, Yasushi
Format Patent
LanguageEnglish
French
Japanese
Published 06.06.2019
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Abstract The purpose of the present invention is to provide a method for eluting calcium from a steel-making slag, with which a larger amount of calcium can be easily eluted from the steel-making slag to an aqueous solution containing carbon dioxide. To this end, the present invention relates to a method for eluting calcium from a steel-making slag. In the present invention, a steel-making slag that is included in a slurry which includes the steel-making slag and into which carbon dioxide has been introduced, is made to settle within an eluting/settling tank to increase the concentration of the steel-making slag in the slurry, and the slurry with an increased concentration of the steel-making slag is removed from the eluting/settling tank. The steel-making slag included in the slurry that was removed is pulverized, or the surface of the steel-making slag included in the slurry that was removed is crushed. The slurry including the pulverized or crushed steel-making slag is then reintroduced into the eluting/settling tank. L'invention a pour objet de fournir un procédé d'élution de calcium à partir de scories d'élaboration d'acier qui permet une élution facile d'une grande quantité de calcium à partir de scories d'élaboration d'acier vers une solution aqueuse contenant un dioxyde de carbone. À cet effet, l'invention concerne un procédé d'élution de calcium à partir de scories d'élaboration d'acier. Selon ce procédé, les scories d'élaboration d'acier contenues dans une bouillie à teneur en scories d'élaboration d'acier et dans laquelle un dioxyde de carbone est introduit sont soumises à une décantation dans la partie interne d'une cuve d'élution / décantation, la concentration en scories d'élaboration d'acier dans ladite bouillie est augmentée, et la bouillie dont la concentration en scories d'élaboration d'acier est ainsi augmentée, est extraite de ladite cuve d'élution / décantation. Les scories d'élaboration d'acier contenues dans ladite bouillie ainsi extraite, sont pulvérisées, ou la surface des scories d'élaboration d'acier contenues dans ladite bouillie ainsi extraite, est broyée. La bouillie contenue dans lesdites scories d'élaboration d'acier pulvérisées ou broyées sont introduites dans ladite cuve d'élution / décantation. 本発明は、容易により多量のカルシウムを製鋼スラグから二酸化炭素を含む水溶液へ溶出させることができる、製鋼スラグからカルシウムを溶出させる方法を提供することを目的とする。上記目的を達成するための本発明は、製鋼スラグからカルシウムを溶出させる方法に関する。本発明では、製鋼スラグを含み、かつ、二酸化炭素が導入されたスラリーに含まれる製鋼スラグを溶出・沈降槽の内部で沈降させて前記スラリー中の前記製鋼スラグの濃度を高め、前記製鋼スラグの濃度が高められたスラリーを前記溶出・沈降槽から取り出す。前記取り出されたスラリーに含まれる製鋼スラグは粉砕され、または前記前記取り出されたスラリーに含まれる製鋼スラグの表面は磨砕される。前記粉砕または磨砕された製鋼スラグを含むスラリーは前記溶出・沈降槽に再導入される。
AbstractList The purpose of the present invention is to provide a method for eluting calcium from a steel-making slag, with which a larger amount of calcium can be easily eluted from the steel-making slag to an aqueous solution containing carbon dioxide. To this end, the present invention relates to a method for eluting calcium from a steel-making slag. In the present invention, a steel-making slag that is included in a slurry which includes the steel-making slag and into which carbon dioxide has been introduced, is made to settle within an eluting/settling tank to increase the concentration of the steel-making slag in the slurry, and the slurry with an increased concentration of the steel-making slag is removed from the eluting/settling tank. The steel-making slag included in the slurry that was removed is pulverized, or the surface of the steel-making slag included in the slurry that was removed is crushed. The slurry including the pulverized or crushed steel-making slag is then reintroduced into the eluting/settling tank. L'invention a pour objet de fournir un procédé d'élution de calcium à partir de scories d'élaboration d'acier qui permet une élution facile d'une grande quantité de calcium à partir de scories d'élaboration d'acier vers une solution aqueuse contenant un dioxyde de carbone. À cet effet, l'invention concerne un procédé d'élution de calcium à partir de scories d'élaboration d'acier. Selon ce procédé, les scories d'élaboration d'acier contenues dans une bouillie à teneur en scories d'élaboration d'acier et dans laquelle un dioxyde de carbone est introduit sont soumises à une décantation dans la partie interne d'une cuve d'élution / décantation, la concentration en scories d'élaboration d'acier dans ladite bouillie est augmentée, et la bouillie dont la concentration en scories d'élaboration d'acier est ainsi augmentée, est extraite de ladite cuve d'élution / décantation. Les scories d'élaboration d'acier contenues dans ladite bouillie ainsi extraite, sont pulvérisées, ou la surface des scories d'élaboration d'acier contenues dans ladite bouillie ainsi extraite, est broyée. La bouillie contenue dans lesdites scories d'élaboration d'acier pulvérisées ou broyées sont introduites dans ladite cuve d'élution / décantation. 本発明は、容易により多量のカルシウムを製鋼スラグから二酸化炭素を含む水溶液へ溶出させることができる、製鋼スラグからカルシウムを溶出させる方法を提供することを目的とする。上記目的を達成するための本発明は、製鋼スラグからカルシウムを溶出させる方法に関する。本発明では、製鋼スラグを含み、かつ、二酸化炭素が導入されたスラリーに含まれる製鋼スラグを溶出・沈降槽の内部で沈降させて前記スラリー中の前記製鋼スラグの濃度を高め、前記製鋼スラグの濃度が高められたスラリーを前記溶出・沈降槽から取り出す。前記取り出されたスラリーに含まれる製鋼スラグは粉砕され、または前記前記取り出されたスラリーに含まれる製鋼スラグの表面は磨砕される。前記粉砕または磨砕された製鋼スラグを含むスラリーは前記溶出・沈降槽に再導入される。
Author FUKUI, Yasushi
IWAMIZU, Yoshiharu
ASABA, Akihiro
SORATA, Yusuke
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DocumentTitleAlternate 製鋼スラグからカルシウムを溶出させる方法、製鋼スラグからカルシウムを回収する方法、および製鋼スラグからカルシウムを溶出させる装置
PROCÉDÉ AINSI QUE DISPOSITIF D'ÉLUTION DE CALCIUM À PARTIR DE SCORIES D'ÉLABORATION D'ACIER, ET PROCÉDÉ DE RÉCUPÉRATION DE CALCIUM À PARTIR DE SCORIES D'ÉLABORATION D'ACIER
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  text: 20190606
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PublicationYear 2019
RelatedCompanies NISSHIN STEEL CO., LTD
RelatedCompanies_xml – name: NISSHIN STEEL CO., LTD
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Snippet The purpose of the present invention is to provide a method for eluting calcium from a steel-making slag, with which a larger amount of calcium can be easily...
SourceID epo
SourceType Open Access Repository
SubjectTerms ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
DISPOSAL OF SOLID WASTE
LIME, MAGNESIA
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS
METALLURGY
PERFORMING OPERATIONS
RECLAMATION OF CONTAMINED SOIL SOIL
REFRACTORIES
SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS
SLAG
TRANSPORTING
TREATMENT OF NATURAL STONE
Title METHOD FOR ELUTING CALCIUM FROM STEEL-MAKING SLAG, METHOD FOR COLLECTING CALCIUM FROM STEEL-MAKING SLAG, AND DEVICE FOR ELUTING CALCIUM FROM STEEL-MAKING SLAG
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