CL2021003523A1 - Procedure for the leaching of elements of value from metallurgical waste - Google Patents

Procedure for the leaching of elements of value from metallurgical waste

Info

Publication number
CL2021003523A1
CL2021003523A1 CL2021003523A CL2021003523A CL2021003523A1 CL 2021003523 A1 CL2021003523 A1 CL 2021003523A1 CL 2021003523 A CL2021003523 A CL 2021003523A CL 2021003523 A CL2021003523 A CL 2021003523A CL 2021003523 A1 CL2021003523 A1 CL 2021003523A1
Authority
CL
Chile
Prior art keywords
lead
leaching
copper
solution
iron
Prior art date
Application number
CL2021003523A
Other languages
Spanish (es)
Inventor
Goycolea Marcelo Gustavo Acuña
Conte Ricardo Miguel Pezoa
Original Assignee
Ecometales Ltd
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 Ecometales Ltd filed Critical Ecometales Ltd
Priority to CL2021003523A priority Critical patent/CL2021003523A1/en
Publication of CL2021003523A1 publication Critical patent/CL2021003523A1/en

Links

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

Un procedimiento para la lixiviación de cobre y plomo, de residuos metalúrgicos de polvos de fundición que han sido sometidos a un proceso de lixiviación de cobre y que comprenden cobre, fierro, plomo, silicio, y opcionalmente arsénico, antimonio y bismuto, que, comprende: (i) lixiviación de cobre con una primera solución ácida del residuo metalúrgico, para obtener una primera solución de lixiviación rica en cobre y fierro, y opcionalmente arsénico, antimonio y bismuto y una primera borra lixiviada que tiene un contenido reducido de cobre y fierro, y opcionalmente reducido arsénico y enriquecido en plomo y silicio, (ii) lixiviación de la primera borra lixiviada con una primera solución de una sal de un ácido carboxílico, para obtener una segunda borra lixiviada empobrecida en plomo y una segunda solución de lixiviación enriquecida en plomo, (iii) precipitación en donde se adiciona una primera base a la segunda solución de lixiviación enriquecida en plomo para obtener un primer concentrado de plomo, y una primera solución de precipitación empobrecida en plomo, (iv) lixiviación alcalina de la segunda borra lixiviada, en donde se adiciona una segunda base para formar una solución de lixiviación alcalina, para obtener una tercera borra lixiviada que tiene un contenido reducido en silicio, y una tercera solución de lixiviación rica en silicio, y opcionalmente arsénico, (v) lixiviación clorhídrica de la tercera borra lixiviada, en donde se utiliza una solución ácida en ambiente de cloruro, para obtener una cuarta borra lixiviada para disposición final y una cuarta solución de lixiviación rica en cobre, plomo y fierro, y opcionalmente arsénico, (vi), (vii) precipitación metálica desde la cuarta solución de lixiviación rica en cobre, plomo y hierro, y opcionalmente arsénico con una lechada de neutralizante, para producir una quinta solución rica en cloruro y un primer sólido precipitado rico en hierro, cobre y plomo, y opcionalmente arsénico, y ( viii) lixiviación del primer sólido precipitado rico en hierro, cobre y plomo, y opcionalmente arsénico con una solución de ácido sulfúrico, para producir una sexta solución de lixiviación rica en cobre, hierro y opcionalmente arsénico, y un segundo concentrado plomo.A process for the leaching of copper and lead, from metallurgical residues of foundry powders that have been subjected to a copper leaching process and that include copper, iron, lead, silicon, and optionally arsenic, antimony and bismuth, which includes : (i) copper leaching with a first acid solution of the metallurgical residue, to obtain a first leaching solution rich in copper and iron, and optionally arsenic, antimony and bismuth and a first leached sludge that has a reduced content of copper and iron , and optionally reduced arsenic and enriched in lead and silicon, (ii) leaching the first leached fluff with a first solution of a salt of a carboxylic acid, to obtain a second leached fluff depleted in lead and a second leaching solution enriched in lead, (iii) precipitation where a first base is added to the second leaching solution enriched in lead to obtain a first concentration lead, and a first lead-depleted precipitation solution, (iv) alkaline leaching of the second leached sludge, where a second base is added to form an alkaline leaching solution, to obtain a third leached sludge having a content reduced in silicon, and a third leaching solution rich in silicon, and optionally arsenic, (v) hydrochloric leaching of the third leached sludge, where an acid solution is used in a chloride environment, to obtain a fourth leached sludge for final disposal and a fourth leach solution rich in copper, lead and iron, and optionally arsenic, (vi), (vii) metallic precipitation from the fourth leach solution rich in copper, lead and iron, and optionally arsenic with a neutralizer slurry, to produce a fifth chloride-rich solution and a first precipitated solid rich in iron, copper, and lead, and optionally arsenic, and (viii) leaching the first r precipitated solid rich in iron, copper and lead, and optionally arsenic with a sulfuric acid solution, to produce a sixth leach solution rich in copper, iron and optionally arsenic, and a second lead concentrate.

CL2021003523A 2021-12-28 2021-12-28 Procedure for the leaching of elements of value from metallurgical waste CL2021003523A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CL2021003523A CL2021003523A1 (en) 2021-12-28 2021-12-28 Procedure for the leaching of elements of value from metallurgical waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CL2021003523A CL2021003523A1 (en) 2021-12-28 2021-12-28 Procedure for the leaching of elements of value from metallurgical waste

Publications (1)

Publication Number Publication Date
CL2021003523A1 true CL2021003523A1 (en) 2022-08-05

Family

ID=83103434

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2021003523A CL2021003523A1 (en) 2021-12-28 2021-12-28 Procedure for the leaching of elements of value from metallurgical waste

Country Status (1)

Country Link
CL (1) CL2021003523A1 (en)

Similar Documents

Publication Publication Date Title
Kim et al. Selective leaching of Pb, Cu, Ni and Zn from secondary lead smelting residues
JP5936573B2 (en) Separation method of copper and molybdenum
EP3363918A1 (en) Method for extracting metals from concentrated sulphurated minerals containing metals by direct reduction with regeneration and recycling of the reducing agent, iron, and of the flux, sodium carbonate
EP0113649A1 (en) A method for working-up complex sulphidic ore concentrates
WO2014064530A1 (en) Recovery of gold from roaster calcine leach tailings
Moosavi-Khoonsari et al. A review on pyrometallurgical extraction of antimony from primary resources: current practices and evolving processes
EP3555327A1 (en) Processing of industrial metal-containing waste materials
WO2015143574A1 (en) Method for recovering copper, molybdenum and other materials from foundry slag
Nadirov et al. COPPER SMELTER SLAG LEACHING BY USING H 2 SO 4 IN THE PRESENCE OF DICHROMATE.
JP6363035B2 (en) Copper slag treatment method
WO2015178752A1 (en) Hydrometallurgical process for the recovery of copper, lead and/or zinc
CL2021003523A1 (en) Procedure for the leaching of elements of value from metallurgical waste
Conner et al. Enargite treatments and pressure oxidation of concentrates
PE20220265A1 (en) PROCEDURE FOR THE LEACHING OF ELEMENTS OF VALUE FROM METALLURGICAL WASTE
PE20220266A1 (en) PROCEDURE FOR THE PRODUCTION OF SILVER CONCENTRATE FROM METALLURGICAL WASTE
ES2904308T3 (en) Methods for iron removal through magnetite formation in hydrometallurgical processes
JP2758954B2 (en) Method for recovering non-ferrous metal valuables, in particular nickel, cobalt, copper and zinc, from raw materials containing these metals using melts and melt-coated sulphation
AU2022316599A1 (en) Treatment of zinc leach residue
WO2019138316A1 (en) Process for the recovery of copper and cobalt from a material sample
WO2014022946A1 (en) Method for processing smelting dust by means of tricarboxylic acid
CL2021003522A1 (en) Procedure for the production of silver concentrate from metallurgical waste
CA2848843C (en) Pre-treatment for conventional cyanidation for silver recovering from manganese - argentiferous ores containing occluded silver
EA009503B1 (en) Method for processing concentrates from coppersulfide-based ores
Ferron et al. The recovery of copper and zinc from a sulphide concentrate using sulphate roasting, acid leaching and solution purification
Karimov et al. Autoclave precipitation of iron from zinc sulfate solutions