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RU2000124618A - METHOD FOR DISPOSAL OF SECOND RAW MATERIALS CONTAINING IRON, ZINC AND LEAD - Google Patents

METHOD FOR DISPOSAL OF SECOND RAW MATERIALS CONTAINING IRON, ZINC AND LEAD

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Publication number
RU2000124618A
RU2000124618A RU2000124618/02A RU2000124618A RU2000124618A RU 2000124618 A RU2000124618 A RU 2000124618A RU 2000124618/02 A RU2000124618/02 A RU 2000124618/02A RU 2000124618 A RU2000124618 A RU 2000124618A RU 2000124618 A RU2000124618 A RU 2000124618A
Authority
RU
Russia
Prior art keywords
carbon
less
waste
furnace
raw materials
Prior art date
Application number
RU2000124618/02A
Other languages
Russian (ru)
Other versions
RU2247159C2 (en
Inventor
Эберхард ЗААГЕ
Уве ХАШЕ
Вольфганг ДИТТРИХ
Дитхарт ЛАНГБАЙН
Original Assignee
Б.У.С. Цинкресайклинг Фрайберг Гмбх
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1999146430 external-priority patent/DE19946430A1/en
Application filed by Б.У.С. Цинкресайклинг Фрайберг Гмбх filed Critical Б.У.С. Цинкресайклинг Фрайберг Гмбх
Publication of RU2000124618A publication Critical patent/RU2000124618A/en
Application granted granted Critical
Publication of RU2247159C2 publication Critical patent/RU2247159C2/en

Links

Claims (5)

1. Способ утилизации вторичных сырьевых материалов, содержащих железо, цинк и свинец, преимущественно пылевидных отходов процессов производства стали, во вращающейся трубчатой печи, работающей на принципе противотока в отношении шихты и газовой атмосферы, в основном регулируемых прокатных отходов, отличающийся тем, что упомянутые сырьевые материалы смешивают и/или подвергают агломерации с химически активным мелкозернистым носителем углерода, при этом количественная часть углерода является строго субстехиометрической, в отличие от всех потребляющих углерод реакций в шихте, в которой дополнительную часть крупнозернистый носителей углерода распределяют между агломератами, и в которой суммарное количество углерода составляет менее 80% от количества, необходимого для всех потребляющих углерод реакций в шихте при температуре прокатки менее 1150oС.1. The method of disposal of secondary raw materials containing iron, zinc and lead, mainly dusty waste from steel production processes, in a rotary tube furnace operating on the principle of countercurrent with respect to charge and gas atmosphere, mainly regulated rolling waste, characterized in that the said raw materials the materials are mixed and / or agglomerated with a reactive fine-grained carbon carrier, while the quantitative part of the carbon is strictly sub-stoichiometric, unlike ex carbon-consuming reactions in the mixture, in which an additional part of the coarse-grained carbon carriers is distributed between the agglomerates, and in which the total amount of carbon is less than 80% of the amount required for all carbon-consuming reactions in the mixture at a rolling temperature of less than 1150 o C. 2. Способ по п. 1, отличающийся тем, что упомянутую часть углерода дозируют так, чтобы прокатные отходы не содержали свободного углерода (менее 1%), даже без последующего окисления. 2. The method according to p. 1, characterized in that the said part of the carbon is dosed so that the rolling waste does not contain free carbon (less than 1%), even without subsequent oxidation. 3. Способ по п. 1, отличающийся тем, что в печь подают весь объем воздуха, который является стехиометрическим или гиперстехиометрическим в отношении всех окислительных компонентов газа, т. е. , его можно использовать без специального регулируемого последующего дожигания. 3. The method according to p. 1, characterized in that the entire volume of air is supplied to the furnace, which is stoichiometric or hyperstoichiometric with respect to all the oxidizing components of the gas, that is, it can be used without special controlled subsequent afterburning. 4. Способ по любому из пп. 1-3, отличающийся тем, что прокатные отходы подают вместе с холодным воздухом вблизи выпускного отверстия печи по достижении стабильной работы печи при восстановлении части металлического железа в количестве менее 20% от полного содержания железа, предпочтительно, менее 10%. 4. The method according to any one of paragraphs. 1-3, characterized in that the rolling waste is supplied together with cold air near the outlet of the furnace to achieve stable operation of the furnace when recovering part of the metallic iron in an amount of less than 20% of the total iron content, preferably less than 10%. 5. Способ по любому из пп. 1-3, отличающийся тем, что высокую степень основности прокатных отходов регулируют при высоком количестве магния при MgO больше или равного 0,1% СаО посредством добавления извести и содержащих магний отходов, например, отстой осажденного гипса. 5. The method according to any one of paragraphs. 1-3, characterized in that a high degree of basicity of the rolling waste is regulated with a high amount of magnesium with MgO greater than or equal to 0.1% CaO by adding lime and magnesium-containing waste, for example, sedimentation of precipitated gypsum.
RU2000124618A 1999-09-28 2000-09-27 Method of utilization of secondary raw materials containing iron, zinc and lead RU2247159C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999146430 DE19946430A1 (en) 1999-09-28 1999-09-28 Process for recycling secondary raw materials containing iron, zinc and lead
DE19946430.8 1999-09-28

Publications (2)

Publication Number Publication Date
RU2000124618A true RU2000124618A (en) 2002-08-20
RU2247159C2 RU2247159C2 (en) 2005-02-27

Family

ID=7923562

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2000124618A RU2247159C2 (en) 1999-09-28 2000-09-27 Method of utilization of secondary raw materials containing iron, zinc and lead

Country Status (13)

Country Link
US (1) US6494933B1 (en)
EP (1) EP1088904B1 (en)
JP (2) JP5086500B2 (en)
AT (1) ATE284453T1 (en)
BG (1) BG64629B1 (en)
BR (1) BR0004475A (en)
CA (1) CA2321311A1 (en)
DE (2) DE19946430A1 (en)
ES (1) ES2234495T3 (en)
MX (1) MXPA00009475A (en)
PL (1) PL197557B1 (en)
RU (1) RU2247159C2 (en)
TW (1) TW460586B (en)

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US8470068B2 (en) * 2004-12-07 2013-06-25 Nu-Iron Technology, Llc Method and system for producing metallic iron nuggets
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EP2500441A1 (en) * 2006-07-26 2012-09-19 Nu-Iron Technology, LLC Metallic iron nuggets
US8021460B2 (en) * 2006-07-26 2011-09-20 Nu-Iron Technology, Llc System and method for producing metallic iron nodules
CZ301924B6 (en) 2009-02-10 2010-08-04 Raclavský@Milan Refining technology of and a device for treating metalline zinc-containing waste in revolving furnace
US8287621B2 (en) 2010-12-22 2012-10-16 Nu-Iron Technology, Llc Use of bimodal carbon distribution in compacts for producing metallic iron nodules
DE102016005787A1 (en) 2016-05-13 2017-11-16 Befesa Zinc Duisburg GmbH Method and plant for obtaining high-purity rolling oxide from zinc-containing raw materials by means of counter-rotating rotary kiln
EA033560B1 (en) * 2017-06-23 2019-10-31 Belarusian National Technical Univ Method of low-tonnage recycling of dispersed iron-containing metal wastes without preliminary preparation thereof by solid-liquid phase reduction in rotation tilting furnace to produce cast iron or steel
CN108956259B (en) * 2018-06-20 2021-03-23 攀钢集团西昌钢钒有限公司 Method for detecting free carbon in continuous casting mold flux
PL246550B1 (en) * 2022-07-16 2025-02-10 Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie Method of producing granulate from sludge originating from metallurgical processes, especially converter and/or blast furnace processes
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WO2025219551A1 (en) 2024-04-18 2025-10-23 Befesa Steel R&D, Sociedad Limitada Unipersonal Method and plant for recycling metal oxides

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