RU94041489A - Method of pyrometallurgical upgrading complex iron-containing materials - Google Patents

Method of pyrometallurgical upgrading complex iron-containing materials

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Publication number
RU94041489A
RU94041489A RU94041489/02A RU94041489A RU94041489A RU 94041489 A RU94041489 A RU 94041489A RU 94041489/02 A RU94041489/02 A RU 94041489/02A RU 94041489 A RU94041489 A RU 94041489A RU 94041489 A RU94041489 A RU 94041489A
Authority
RU
Russia
Prior art keywords
iron
pellets
temperature
fusion
melting point
Prior art date
Application number
RU94041489/02A
Other languages
Russian (ru)
Other versions
RU2087542C1 (en
Inventor
Н.А. Ватолин
А.С. Вусихис
В.И. Двинин
Л.И. Леонтьев
С.Г. Майзель
С.В. Шаврин
Original Assignee
Институт металлургии Уральского отделения РАН
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.)
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Publication date
Application filed by Институт металлургии Уральского отделения РАН filed Critical Институт металлургии Уральского отделения РАН
Priority to RU94041489/02A priority Critical patent/RU2087542C1/en
Publication of RU94041489A publication Critical patent/RU94041489A/en
Application granted granted Critical
Publication of RU2087542C1 publication Critical patent/RU2087542C1/en

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

FIELD: metallurgy. SUBSTANCE: method includes: mixing iron-containing material with a solid reducing agent, balling, baking, cooling, and subsequent magnetic separation. Method is distinguished with rolling a shell of material with melting temperature no less that 1.1 that of fusion of the most refractory constituent of reduced pellets followed by two-step baking of pellets. The latter are first baked to complete reduction of iron at temperature constituting 0.65-0.85 that of iron fusion and then heated to a temperature no lower than 1.02 that of fusion of the most refractory phase of reduced pellets. Average diameter of particles of rolled shell constitutes 30-75% that of diameter of iron-ore particles in the blend. Invention may be used in direct production of iron. EFFECT: improved procedure.

Claims (1)

Изобретение относится к металлургии, в частности к подготовке сырья к металлургическому переделу и может быть использовано при прямом получении железа. Способ пирометаллургического обогащения комплексных железосодержащих материалов предусматривает смешивание их с твердым восстановителем, окомкование, обжиг, охлаждение и последующую магнитную сепарацию. Особенностью технологии является накатывание оболочки из материала с температурой плавления не менее 1,1 температуры плавления наиболее тугоплавкой составляющей восстанавливаемых окатышей и затем обжиг полученных окатышей, осуществляемый в два этапа. Сначала окатыши обжигают до полного восстановления железа при температуре 0,65 - 0,85 температуры плавления железа, а затем нагревают до температуры не менее 1,02 температуры плавления наиболее тугоплавкой фазы восстановленных окатышей. При этом средний диаметр частиц материала накатываемой оболочки составляет 30 - 75% среднего диаметра железорудных частиц шихты.The invention relates to metallurgy, in particular to the preparation of raw materials for metallurgical processing and can be used in the direct production of iron. The pyrometallurgical enrichment method for complex iron-containing materials involves mixing them with a solid reducing agent, pelletizing, calcining, cooling and subsequent magnetic separation. A feature of the technology is the rolling of a shell made of a material with a melting point of at least 1.1 melting points of the most refractory component of the reduced pellets and then firing the obtained pellets in two stages. First, the pellets are fired until the iron is completely reduced at a temperature of 0.65 - 0.85 of the melting point of iron, and then heated to a temperature of not less than 1.02 of the melting point of the most refractory phase of the reduced pellets. Moreover, the average particle diameter of the material of the rolling shell is 30 - 75% of the average diameter of the iron ore particles of the charge.
RU94041489/02A 1994-11-16 1994-11-16 Method of pyrometallurgical enrichment of complex iron-containing materials RU2087542C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94041489/02A RU2087542C1 (en) 1994-11-16 1994-11-16 Method of pyrometallurgical enrichment of complex iron-containing materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94041489/02A RU2087542C1 (en) 1994-11-16 1994-11-16 Method of pyrometallurgical enrichment of complex iron-containing materials

Publications (2)

Publication Number Publication Date
RU94041489A true RU94041489A (en) 1996-12-10
RU2087542C1 RU2087542C1 (en) 1997-08-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU94041489/02A RU2087542C1 (en) 1994-11-16 1994-11-16 Method of pyrometallurgical enrichment of complex iron-containing materials

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RU (1) RU2087542C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2460813C1 (en) * 2011-06-16 2012-09-10 Антон Васильевич Рощин Method for selective extraction of metals from complex ores
RU2483118C1 (en) * 2011-12-05 2013-05-27 Открытое акционерное общество "Магнитогорский металлургический комбинат" Method of metallising siderite stock for making granular iron and ferro-magnesia slag
RU2539884C1 (en) * 2013-09-13 2015-01-27 Александр Давидович Поволоцкий Processing method of iron-containing wastes
RU2743132C2 (en) * 2020-03-24 2021-02-15 Владимир Иванович Лунёв Method for obtaining iron from oolites of limonite ore and device for its implementation

Also Published As

Publication number Publication date
RU2087542C1 (en) 1997-08-20

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