COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION.: GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH  SIMULTANEOUS PRESSURE LEACHING/OXIDATION.

Jesus L Valenzuela; Maria Mercedes  Salazar Campoy; Luis Sergio Quiroz-Castillo; Patricia Guerrero Germán; Martín Antonio Encinas Romero; Guillermo del Carmen Tiburcio Munive; Jose Refugio Parga Torres

doi:10.1007/s42461-020-00217-6

COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION. GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION.

Jesus L Valenzuela, Maria Mercedes Salazar Campoy, Luis Sergio Quiroz-Castillo, Patricia Guerrero Germán, Martín Antonio Encinas Romero, Guillermo del Carmen Tiburcio Munive, Jose Refugio Parga Torres

Departamento de Ingeniería Química y Metalurgia

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Pressure oxidation is a hydrometallurgical oxidative pretreatment for refractory ores, such as sulfide ores. Here, simultaneous alkaline pressure oxidation and sodium cyanide leaching treatments were carried out on a pyritic ore from the Mulatos Mine located in Sahuaripa, Sonora, Mexico. Mineral characterization, agitation leaching, hot cyanidation under atmospheric pressure conditions, simultaneous moderated pressure oxidation and leaching, and kinetic testing results are shown. The modified variables were temperature, pressure, and cyanide concentration. Characterization indicated that pyrite was the main mineral. Simultaneous pressure oxidation and leaching experiments were conducted at a temperature range of 40–80 °C, oxygen pressure of 87.5–200 psi, and cyanide concentration of 0.8–1.2 wt% in a 2-L Parr pressure reactor. A dissolution rate of 81–86% was achieved under the following conditions: 87.5 psi, 80 °C, 0.8 wt% NaCN, for 1 h.

Translated title of the contribution	Estudio Comparativo de la Extracción d eOro de Minerales Piríticos Refractarios utilizando Lixiviación Convencional y Simultánea Oxidación y Lixiviación a Presión
Original language	English
Article number	doi.org/10.1007/s42461-020-00217-6
Pages (from-to)	1-6
Number of pages	6
Journal	MINING, METALLURGY AND EXPLORATION
Volume	2
Issue number	1
DOIs	https://doi.org/10.1007/s42461-020-00217-6 https://doi.org/10.1007/s42461-020-00217-6
State	Published - 6 May 2020

Bibliographical note

Publisher Copyright:
© 2020, Society for Mining, Metallurgy & Exploration Inc.

Keywords

Gold extraction
Oxidation
Pressure leaching
Pyritic ores
Refractory ores

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Cite this

Valenzuela, J. L., Salazar Campoy, M. M., Quiroz-Castillo, L. S., Guerrero Germán, P., Encinas Romero, M. A., Tiburcio Munive, G. D. C., & Parga Torres, J. R. (2020). COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION. GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION. MINING, METALLURGY AND EXPLORATION, 2(1), 1-6. Article doi.org/10.1007/s42461-020-00217-6. https://doi.org/10.1007/s42461-020-00217-6, https://doi.org/10.1007/s42461-020-00217-6

Valenzuela, Jesus L ; Salazar Campoy, Maria Mercedes ; Quiroz-Castillo, Luis Sergio et al. / COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION. GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION. In: MINING, METALLURGY AND EXPLORATION. 2020 ; Vol. 2, No. 1. pp. 1-6.

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title = "COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION.: GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION.",

abstract = "Pressure oxidation is a hydrometallurgical oxidative pretreatment for refractory ores, such as sulfide ores. Here, simultaneous alkaline pressure oxidation and sodium cyanide leaching treatments were carried out on a pyritic ore from the Mulatos Mine located in Sahuaripa, Sonora, Mexico. Mineral characterization, agitation leaching, hot cyanidation under atmospheric pressure conditions, simultaneous moderated pressure oxidation and leaching, and kinetic testing results are shown. The modified variables were temperature, pressure, and cyanide concentration. Characterization indicated that pyrite was the main mineral. Simultaneous pressure oxidation and leaching experiments were conducted at a temperature range of 40–80 °C, oxygen pressure of 87.5–200 psi, and cyanide concentration of 0.8–1.2 wt% in a 2-L Parr pressure reactor. A dissolution rate of 81–86% was achieved under the following conditions: 87.5 psi, 80 °C, 0.8 wt% NaCN, for 1 h.",

keywords = "Gold extraction, Oxidation, Pressure leaching, Pyritic ores, Refractory ores",

author = "Valenzuela, {Jesus L} and {Salazar Campoy}, {Maria Mercedes} and Quiroz-Castillo, {Luis Sergio} and {Guerrero Germ{\'a}n}, Patricia and {Encinas Romero}, {Mart{\'i}n Antonio} and {Tiburcio Munive}, {Guillermo del Carmen} and {Parga Torres}, {Jose Refugio}",

note = "Publisher Copyright: {\textcopyright} 2020, Society for Mining, Metallurgy & Exploration Inc.",

year = "2020",

month = may,

day = "6",

doi = "10.1007/s42461-020-00217-6",

language = "Ingl{\'e}s",

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Valenzuela, JL, Salazar Campoy, MM, Quiroz-Castillo, LS, Guerrero Germán, P , Encinas Romero, MA , Tiburcio Munive, GDC & Parga Torres, JR 2020, 'COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION. GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION.', MINING, METALLURGY AND EXPLORATION, vol. 2, no. 1, doi.org/10.1007/s42461-020-00217-6, pp. 1-6. https://doi.org/10.1007/s42461-020-00217-6, https://doi.org/10.1007/s42461-020-00217-6

COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION. GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION. / Valenzuela, Jesus L; Salazar Campoy, Maria Mercedes; Quiroz-Castillo, Luis Sergio et al.
In: MINING, METALLURGY AND EXPLORATION, Vol. 2, No. 1, doi.org/10.1007/s42461-020-00217-6, 06.05.2020, p. 1-6.

Research output: Contribution to journal › Article › peer-review

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T1 - COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION.

T2 - GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION.

AU - Valenzuela, Jesus L

AU - Salazar Campoy, Maria Mercedes

AU - Quiroz-Castillo, Luis Sergio

AU - Guerrero Germán, Patricia

AU - Encinas Romero, Martín Antonio

AU - Tiburcio Munive, Guillermo del Carmen

AU - Parga Torres, Jose Refugio

PY - 2020/5/6

Y1 - 2020/5/6

N2 - Pressure oxidation is a hydrometallurgical oxidative pretreatment for refractory ores, such as sulfide ores. Here, simultaneous alkaline pressure oxidation and sodium cyanide leaching treatments were carried out on a pyritic ore from the Mulatos Mine located in Sahuaripa, Sonora, Mexico. Mineral characterization, agitation leaching, hot cyanidation under atmospheric pressure conditions, simultaneous moderated pressure oxidation and leaching, and kinetic testing results are shown. The modified variables were temperature, pressure, and cyanide concentration. Characterization indicated that pyrite was the main mineral. Simultaneous pressure oxidation and leaching experiments were conducted at a temperature range of 40–80 °C, oxygen pressure of 87.5–200 psi, and cyanide concentration of 0.8–1.2 wt% in a 2-L Parr pressure reactor. A dissolution rate of 81–86% was achieved under the following conditions: 87.5 psi, 80 °C, 0.8 wt% NaCN, for 1 h.

AB - Pressure oxidation is a hydrometallurgical oxidative pretreatment for refractory ores, such as sulfide ores. Here, simultaneous alkaline pressure oxidation and sodium cyanide leaching treatments were carried out on a pyritic ore from the Mulatos Mine located in Sahuaripa, Sonora, Mexico. Mineral characterization, agitation leaching, hot cyanidation under atmospheric pressure conditions, simultaneous moderated pressure oxidation and leaching, and kinetic testing results are shown. The modified variables were temperature, pressure, and cyanide concentration. Characterization indicated that pyrite was the main mineral. Simultaneous pressure oxidation and leaching experiments were conducted at a temperature range of 40–80 °C, oxygen pressure of 87.5–200 psi, and cyanide concentration of 0.8–1.2 wt% in a 2-L Parr pressure reactor. A dissolution rate of 81–86% was achieved under the following conditions: 87.5 psi, 80 °C, 0.8 wt% NaCN, for 1 h.

KW - Gold extraction

KW - Oxidation

KW - Pressure leaching

KW - Pyritic ores

KW - Refractory ores

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