Sulphuric acid leaching of low/medium grade managanese ores using a novel nitrogeneous reductant-NH3NH2HSO4

Hariprasad, D.; Mohapatra, Mamata; Anand, S.

doi:10.2298/jmmb120806024h

Cited by 13 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some metal recovery experiment was also carried out by using salts as lixiviants. For instance, to extract nickel, copper, and cobalt from their metal oxide form, ferric chloride (FeCl 3 ) salt was engaged as lixiviant, as reported by Hariprasad and their research team . Results showed that 28% Ni, 92% Cu, and 24% Co were recovered from converter slag, meanwhile, 77%, 54%, and 44% recovery was achieved for Ni, Cu, and Co, respectively, from smelter slag.…”

Section: Metal Recovery Techniquesmentioning

confidence: 99%

An Overview of Precious Metal Recovery from Steel Industry Slag: Recovery Strategy and Utilization

Samanta

Das

Dhara

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Steel slag is a solid waste of the steel industry, produced during steel production. Three types of slag, namely electric arc furnace (EAF), basic oxygen furnace (BOF), and Linz-Donawitz processed slag (LD-slag) are the steel industry byproducts. That slag comprises precious elements including zinc (Zn), chromium (Cr), iron (Fe), nickel (Ni), silicon (Si) , aluminum (Al), and vanadium (V) and is considered a secondary source of many metals. These metal constituents can be recovered from slags by employing mineral processing techniques like crushing, grinding, magnetic separation, eddy current separation, flotation, leaching, and/or roasting. Metal extraction from steelmaking slag and slag utilization is essential not only for conserving metal supplies but also for environmental protection. This review article evaluated and summarized various extraction methods including magnetic separation, roasting, pyrometallurgical method, hydrometallurgical and bio hydrometallurgical technique to recover precious metal constituents from obtained slag. The state-of-the-art of metal recovery from slag using the aforementioned methodologies and the merits, and demerits of each procedure have been illustrated comprehensively. Suggestions have been made to overcome the shortfall and or lacuna of the technology for better performance and efficiency. The opportunities and difficulties portion of this article paints a vivid picture of turning such a beneficial technology into a more adaptable procedure with some additions that may motivate and lead future research in new directions. The essence of this survey indicates that extracted metal and treated slag might be reutilized in various fields ranging from biomedical to fertilizer applications.

show abstract

Section: Metal Recovery Techniquesmentioning

confidence: 99%

An Overview of Precious Metal Recovery from Steel Industry Slag: Recovery Strategy and Utilization

Samanta

Das

Dhara

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…La solución de lixiviación química (en condiciones estáticas) fue preparada con de H 2 SO 4 al 4% (Hariprasad et al, 2013) en cada sistema de columna por gravedad, con similares medidas descritas en el sistema anterior. …”

Section: Estudio De Lixiviación Químicaunclassified

Biolixiviación de mineral cuarzo por <em>Acidithiobacillus ferrooxidans</em> en reactor de columna por gravedad

et al. 2017

View full text Add to dashboard Cite

RESUMEN:La biolixiviación es el proceso mediante el cual se extrae cobre de minerales sulfuros de baja ley usando microorganismos. La lixiviación química se aplica preferentemente para extraer cobre de minerales oxidados o mixtos, pero no existe información de aplicación de microorganismos en esta operación. En tal sentido, en la presente investigación se trabajó con reactores en columna por gravedad para procesos de lixiviación química, con cultivos bacterianos de Acidithiobacillus ferrooxidans en medio 9K y mineral de cuarzo que contenía cuprita y pirita, con diferentes tamaños de partícula. Se encontró que después de 24 días de lixiviación química se recuperó el 86% de cobre cuando se incluyeron bacterias, mientras que sin ellas sólo se recuperó el 54%. La mayor recuperación de cobre en ambos procesos se obtuvo en el siguiente orden de acuerdo al tamaño de partícula: 9,5 mm > 12,5 mm > 19,05 mm. Así, la aplicación de células bacterianas a procesos lixiviación química con minerales oxidados de cobre que incluyen cuarzo y células de A. ferrooxidans, aumenta la recuperación de cobre cuanto menor sea el tamaño de partícula del mineral. Esta tecnología puede ser utilizada por empresas mineras que aún siguen realizando lixiviación química convencional y se puede incluir en la operación la adición de microorganismos para aumentar la recuperación de cobre de minerales sulfurados incluyendo cuarzo. ABSTRACT: Quartz mineral bioleaching by Acidithiobacillus ferrooxidans in gravity column reactor. Bioleaching is the process by which copper is extracted from low-sulfur minerals using microorganisms. However, chemical leaching is preferably applied to extract copper from oxidized or mixed minerals, without reports of application of microorganisms in this operation. In this work, we investigated the presence of Acidithiobacillus ferrooxidans in 9K medium and quartz mineral, with quartz sandstone, cuprite and pyrite at different particle sizes. It was found that at 24 days of the chemical leaching process 86% of copper was recovered when bacteria were included and only 54% recovered without them. The highest copper recovery in both processes was obtained in the following order according to the particle size: 9.5 mm > 12.5 mm > 19.05

show abstract

“…The remaining unreacted MnO 2 can only be dissolved in the presence of a reductant such as SO 2 (g) or hydrazine [20,21], of which the reaction can be represented as:…”

Section: Introductionmentioning

confidence: 99%

The Recovery of Cu, Co, Zn, and Mn from a Complex Oxide Ore Using an Enhanced Reduction Leaching

Seo

Han

Lee

et al. 2021

Metals

View full text Add to dashboard Cite

The processing of Cu, Co, and Zn at the Boleo project in Mexico involves two-stage (oxidation–reduction) leaching to extract a total of 85–88% Cu in 4 h. The first stage is an oxidation leaching using sulphuric acid (120 kg/tonne ore) at an Eh of 900 mV for 2 h. Then, the reduction stage takes place in 2 h with SO2 gas sparging for Mn and Co extraction at an Eh of 350–370 mV. The final extraction rates of metal values are 92% of Mn, 80% of Co, and 60% of Co, respectively, after 4 h of leaching at 70 °C. However, the same metal recoveries were obtained within 2 h using an equal amount of sulphuric acid and the addition of 25 kg of SO2 per tonne of ore in a single stage leaching in this research. In this case, the Fe extracted from the ore as Fe2+/Fe3+ is believed to have acted as an electrochemical couple contiguously leaching the Cu sulphide and Mn oxides, which also increased the Cu recovery as the Cu mineralised mostly intergrowths in these mineral structure matrices. A significant improvement was made in which the leaching time was halved to 2 h compared to 4 h in the previous plant design and current operation, involving the two-stage oxidation–reduction leaching.

show abstract

Sulphuric acid leaching of low/medium grade managanese ores using a novel nitrogeneous reductant-NH3NH2HSO4

Cited by 13 publications

References 1 publication

An Overview of Precious Metal Recovery from Steel Industry Slag: Recovery Strategy and Utilization

An Overview of Precious Metal Recovery from Steel Industry Slag: Recovery Strategy and Utilization

Biolixiviación de mineral cuarzo por <em>Acidithiobacillus ferrooxidans</em> en reactor de columna por gravedad

The Recovery of Cu, Co, Zn, and Mn from a Complex Oxide Ore Using an Enhanced Reduction Leaching

Contact Info

Product

Resources

About