CL2019002935A1 - A zero waste process that uses final copper smelting slags to produce commercial products - Google Patents

A zero waste process that uses final copper smelting slags to produce commercial products

Info

Publication number
CL2019002935A1
CL2019002935A1 CL2019002935A CL2019002935A CL2019002935A1 CL 2019002935 A1 CL2019002935 A1 CL 2019002935A1 CL 2019002935 A CL2019002935 A CL 2019002935A CL 2019002935 A CL2019002935 A CL 2019002935A CL 2019002935 A1 CL2019002935 A1 CL 2019002935A1
Authority
CL
Chile
Prior art keywords
oxides
reduction
slag
pig iron
stage
Prior art date
Application number
CL2019002935A
Other languages
Spanish (es)
Inventor
Figueroa Roberto Parra
Fuica Igor Wilkomirsky
Varela Eduardo Balladares
Luna Fernando Parada
Sánchez Víctor Parra
Albornoz Hugo Rojas
Original Assignee
Univ Concepcion
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
Application filed by Univ Concepcion filed Critical Univ Concepcion
Priority to CL2019002935A priority Critical patent/CL2019002935A1/en
Publication of CL2019002935A1 publication Critical patent/CL2019002935A1/en
Priority to PCT/CL2020/050116 priority patent/WO2021072562A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Abstract

Un proceso cero residuos que utiiiza las escorias finales de fundición de cobre para producir productos comerciales que comprende: (a) carga/vaciado de los materiales: se debe adicionar a un reactor/horno un agente reductor y luego vaciar la escoria en estado fundido; además se adicionan óxidos que acnian como fundentes; (b) reducción de óxidos de hierro: una vez que todos los materiales son cargados se debe mantener la temperatura sobre 1550°C para comenzar las reacciones descomposición de fayalita y de reducción, yen paralelo se produce la disolución del agente reductor en el Fe líquido hasta obtenerla composición del arrabio; (c) formación de escoria: esta etapa ocurre en paraleio a la etapa de reducción, donde la temperatura del baño debe mantenerse sobre 1 450°C y donde a medida que avanza la reducción de los óxidos, se va procjciendo la fase arrabio; y el aumento paulatino de la concentración de Si02 Dermite que la escoria comience a tener un aumento de su temperatura de fusión; obtenido tres fases, arrabio, óxidos y gases; (d) descarga de productos: de la etapa (c) le fase gaseosa debe ser evacuada de manera continua; la fase óxidos debe removerse primero y ser enfriada para su solidificación; y la fase arrabio debe ser moldeada en lingotillosA zero waste process that uses the final copper smelting slag to produce commercial products comprising: (a) loading / emptying the materials: a reducing agent must be added to a reactor / furnace and then the slag is emptied in the molten state; furthermore, oxides are added that acne as fluxes; (b) reduction of iron oxides: once all the materials are charged, the temperature must be maintained above 1550 ° C to begin the reactions, decomposition of fayalite and reduction, and in parallel the dissolution of the reducing agent in the liquid Fe occurs until the composition of the pig iron is obtained; (c) slag formation: this stage occurs in parallel to the reduction stage, where the temperature of the bath must be kept above 1450 ° C and where as the reduction of the oxides progresses, the pig iron phase proceeds; and the gradual increase in the concentration of Si02 causes the slag to begin to have an increase in its melting temperature; obtained three phases, pig iron, oxides and gases; (d) discharge of products: from stage (c) the gaseous phase must be evacuated continuously; the oxide phase must first be stirred and cooled for solidification; and the pig iron phase must be molded into ingotillos

CL2019002935A 2019-10-16 2019-10-16 A zero waste process that uses final copper smelting slags to produce commercial products CL2019002935A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CL2019002935A CL2019002935A1 (en) 2019-10-16 2019-10-16 A zero waste process that uses final copper smelting slags to produce commercial products
PCT/CL2020/050116 WO2021072562A1 (en) 2019-10-16 2020-10-08 Zero-waste process that uses final slag from copper smelting to produce commercial products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CL2019002935A CL2019002935A1 (en) 2019-10-16 2019-10-16 A zero waste process that uses final copper smelting slags to produce commercial products

Publications (1)

Publication Number Publication Date
CL2019002935A1 true CL2019002935A1 (en) 2020-03-13

Family

ID=70006099

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2019002935A CL2019002935A1 (en) 2019-10-16 2019-10-16 A zero waste process that uses final copper smelting slags to produce commercial products

Country Status (2)

Country Link
CL (1) CL2019002935A1 (en)
WO (1) WO2021072562A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113213844A (en) * 2021-05-13 2021-08-06 西北矿冶研究院 Filling tailing curing agent of copper-containing smelting slag

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080081258A (en) * 2005-12-09 2008-09-09 카운실 오브 사이언티픽 엔드 인더스트리얼 리서치 A process for recovery of iron from copper slag
CN104694755A (en) * 2015-02-06 2015-06-10 铜陵百荣新型材料铸件有限公司 Method for preparing silicon-vanadium-iron alloy by use of copper slag and waste slag of high-vanadium iron production
CN106191344B (en) * 2016-07-18 2018-05-04 东北大学 A kind of method for mixing the production of slag melting and reducing and modifier treatment

Also Published As

Publication number Publication date
WO2021072562A1 (en) 2021-04-22

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