RU94029853A - Method of secondary lead-bearing materials processing
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Method of secondary lead-bearing materials processing
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RU94029853A
RU94029853ARU94029853/02ARU94029853ARU94029853ARU 94029853 ARU94029853 ARU 94029853ARU 94029853/02 ARU94029853/02 ARU 94029853/02ARU 94029853 ARU94029853 ARU 94029853ARU 94029853 ARU94029853 ARU 94029853A
Государственный научно-исследовательский институт цветных металлов "Гинцветмет"
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FIELD: non-ferrous metallurgy, secondary lead-bearing materials processing in particular, for example, accumulator batteries scrap processing into metal lead. SUBSTANCE: method allows to increase extraction of lead into metal lead and to produce waste slag with low concentration of lead. this is achieved by secondary lead-bearing materials in electrical furnace. Process provides for heat of charge and carbon-bearing solid reducer and production of leas, slag, domestic lead-bearing fumes and gasses. Loadings of charge and carbon-bearing reducer on slag melt bath are exercised separately and heat is carried out under temperature of slag melt of no more than 1159 C with difference of lead and slag temperatures at least 100 C. Before slag tapping it is additionally subjected to reduction. EFFECT: increased amount of extracted lead into metal lead, decreased waste slag lead concentration.
Claims (1)
Изобретение относится к цветной металлургии, в частности к переработке вторичных свинецсодержащих материалов, как, например, аккумуляторный лом, на металлический свинец. Изобретение позволяет повысить извлечение свинца в металлический свинец и получить отвальный шлак с низким содержанием свинца. Это достигается тем, что при переработке вторичных свинецсодержащих материалов в электропечи, включающем плавку шихты и углеродсодержащего твердого восстановителя с получением свинца, шлака, оборотных свинецсодержащих возгонов и газов, загрузку шихты и углеродсодержащего восстановителя на ванну шлакового расплава проводят раздельно и плавку ведут при температуре шлакового расплава не выше 1150°C при разности температур шлака и свинца не менее 100°С, а перед выпуском шлака из печи его дополнительно восстанавливают.The invention relates to non-ferrous metallurgy, in particular to the processing of secondary lead-containing materials, such as battery scrap, for metallic lead. EFFECT: invention makes it possible to increase the extraction of lead into metallic lead and to obtain dump slag with a low content of lead. This is achieved by the fact that during the processing of secondary lead-containing materials in an electric furnace, including the smelting of a charge and a carbon-containing solid reducing agent to produce lead, slag, reverse lead-containing sublimates and gases, the charge and a carbon-containing reducing agent are loaded onto a slag melt bath separately and the melting is carried out at a temperature of slag melt not higher than 1150 ° C with a temperature difference of slag and lead of at least 100 ° C, and before the slag is discharged from the furnace, it is additionally reduced.
RU94029853/02A1994-08-101994-08-10
METHOD FOR PROCESSING SECONDARY LEAD-CONTAINING MATERIALS
RU2077781C1
(en)