Integrated utilization method of ironmaking dust removal ash

The invention provides an integrated utilization method of ironmaking dust removal ash, which comprises the following steps: (1) pulping; (2) carbon extraction by floatation; (3) reduction of zinc and iron; (4) water quenching and hot closed slag technique; (5) screening and crushing; (6) magnetic s...

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Bibliographische Detailangaben
Hauptverfasser:	WANG WEI, FENG JIE, HAN JINGZENG, FAN YAN, YUAN GUANGGUO, LI YI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE DIFFERENTIAL SEDIMENTATION DISPOSAL OF SOLID WASTE FERROUS OR NON-FERROUS ALLOYS FLOTATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY LIME, MAGNESIA MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	The invention provides an integrated utilization method of ironmaking dust removal ash, which comprises the following steps: (1) pulping; (2) carbon extraction by floatation; (3) reduction of zinc and iron; (4) water quenching and hot closed slag technique; (5) screening and crushing; (6) magnetic separation of iron; and (7) preparation of water-permeable bricks. The grade of the regenerated carbon powder of the recovered product is 66%, and the recovery rate is 90.75%; the grade of zinc oxide is 51%, and the recovery rate is up to 76.7%; the grade of iron concentrate is 67%, and the recovery rate is 31.4%; and the grade of iron coarse ore is 36%, and the recovery rate is 14.6%. The invention can implement complete reutilization of ironmaking dust removal ash.