Device and method for resource utilization of zinc- and iron-containing dust sludge

• Main Authors: CHEN MING, SONG HUA, LIU KUNLUN, XIAO DECAI, PENG CHENG, TAN GUANJUN, ZHU KONGLIN, FENG HUATANG, LIU CHANGZHENG
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2018
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a device and a method for resource utilization of zinc- and iron-containing dust sludge. The device comprises a pre-reduction process section and a device and a final reductionand smelting process section and a device. The treatment method comprises the following steps: adding a binder and coke powder in proportion into pre-treated waste such as zinc- and iron-containing dust sludge to press balls; drying the balls and feeding the balls into an annular pre-reduction furnace for pre-reduction; briquetting the reduced pre-reduced raw material or directly feeding the sameinto a final reduction smelting furnace for reduction smelting to obtain molten iron and slag; and after recovering waste heat, collecting the flue gas of the annular pre-reduction furnace through a dust collector to obtain a zinc oxide-enriched product. The invention relates to the field of solid waste treatment and resource utilization, in particular to treatment and resource utilization of solid wastes generated in meta