Leaching of silver from mechanically activated naumannite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F23%3A10136216" target="_blank" >RIV/00023272:_____/23:10136216 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s42461-023-00748-8" target="_blank" >https://link.springer.com/article/10.1007/s42461-023-00748-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s42461-023-00748-8" target="_blank" >10.1007/s42461-023-00748-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Leaching of silver from mechanically activated naumannite

Popis výsledku v původním jazyce

In this paper, the structure, morphology, chemical composition and leaching of naumannite (Ag2Se) were studied. Mechanical activation of Ag2Se in a planetary ball mill resulted in increasing its specific surface area. The influence of milling time on the particle size was studied by particle size distribution analysis and scanning electron microscopy. The leaching kinetics of non-activated and mechanically activated samples in 3.5-7.9 mol/L HNO3 solutions were examined. Subsequently, the effect of leaching temperature in the range of 25-50oC on the recovery of silver from mechanically activated naumannite was documented. The maximum yield of silver 94% was achieved after 120 min of leaching in 7.9 mol/L HNO3 at 50oC for the sample mechanically activated for 30 min. Based on calculated activation energy values from the Arrhenius equation, a mixed leaching mechanism consisting of diffusion and surface chemical reaction as the rate-controlling steps of the solid-liquid reaction was assessed.

Název v anglickém jazyce

Leaching of silver from mechanically activated naumannite

Popis výsledku anglicky

In this paper, the structure, morphology, chemical composition and leaching of naumannite (Ag2Se) were studied. Mechanical activation of Ag2Se in a planetary ball mill resulted in increasing its specific surface area. The influence of milling time on the particle size was studied by particle size distribution analysis and scanning electron microscopy. The leaching kinetics of non-activated and mechanically activated samples in 3.5-7.9 mol/L HNO3 solutions were examined. Subsequently, the effect of leaching temperature in the range of 25-50oC on the recovery of silver from mechanically activated naumannite was documented. The maximum yield of silver 94% was achieved after 120 min of leaching in 7.9 mol/L HNO3 at 50oC for the sample mechanically activated for 30 min. Based on calculated activation energy values from the Arrhenius equation, a mixed leaching mechanism consisting of diffusion and surface chemical reaction as the rate-controlling steps of the solid-liquid reaction was assessed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10504 - Mineralogy

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Mining, Metallurgy &amp; Exploration

ISSN

2524-3462

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

505-515

Kód UT WoS článku

000943225500001

EID výsledku v databázi Scopus

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