Evaluation of thallium isotopic fractionation during the metallurgical processing of sulfides: An update

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10435954" target="_blank" >RIV/00216208:11310/22:10435954 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41210/22:88823

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=zoCM0ZodJO" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=zoCM0ZodJO</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhazmat.2021.127325" target="_blank" >10.1016/j.jhazmat.2021.127325</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of thallium isotopic fractionation during the metallurgical processing of sulfides: An update

Popis výsledku v původním jazyce

In this study, we report combined Tl isotopic and Tl mineralogical and speciation data from a set of Tl-rich sulfide concentrates and technological wastes from hydrometallurgical Zn extraction. We also present the first evaluation of Tl isotopic ratios over a cycle of sulfide processing, from the ore flotation to pyro- and hydrometallurgical stages. The results demonstrate that the prevailing Tl form in all samples is Tl(I), without any preferential incorporation into sulfides or Tl-containing secondary phases, indicating an absence of Tl redox reactions. Although the Tl concentrations varied significantly in the studied samples (similar to 9-280 mg/kg), the overall Tl isotopic variability was small, in the range of -3.1 to -4.4 +/- 0.7 (2 sigma) epsilon Tl-205 units. By combining present epsilon Tl-205 results with the trends first found for a local roasting plant, it is possible to infer minimum Tl isotopic effects throughout the studied industrial process. As a result, the use of Tl isotopic ratios as a source proxy may be complicated or even impossible in areas with naturally high/extreme Tl background contents. On the other hand, areas with two or more isotopically contrasting Tl sources allow for relatively easy tracing, i.e., in compartments which do not suffer from post-depositional isotopic redistributions.

Název v anglickém jazyce

Evaluation of thallium isotopic fractionation during the metallurgical processing of sulfides: An update

Popis výsledku anglicky

In this study, we report combined Tl isotopic and Tl mineralogical and speciation data from a set of Tl-rich sulfide concentrates and technological wastes from hydrometallurgical Zn extraction. We also present the first evaluation of Tl isotopic ratios over a cycle of sulfide processing, from the ore flotation to pyro- and hydrometallurgical stages. The results demonstrate that the prevailing Tl form in all samples is Tl(I), without any preferential incorporation into sulfides or Tl-containing secondary phases, indicating an absence of Tl redox reactions. Although the Tl concentrations varied significantly in the studied samples (similar to 9-280 mg/kg), the overall Tl isotopic variability was small, in the range of -3.1 to -4.4 +/- 0.7 (2 sigma) epsilon Tl-205 units. By combining present epsilon Tl-205 results with the trends first found for a local roasting plant, it is possible to infer minimum Tl isotopic effects throughout the studied industrial process. As a result, the use of Tl isotopic ratios as a source proxy may be complicated or even impossible in areas with naturally high/extreme Tl background contents. On the other hand, areas with two or more isotopically contrasting Tl sources allow for relatively easy tracing, i.e., in compartments which do not suffer from post-depositional isotopic redistributions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Hazardous Materials

ISSN

0304-3894

e-ISSN

1873-3336

Svazek periodika

424

Číslo periodika v rámci svazku

Part A, February

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

127325

Kód UT WoS článku

000703557600006

EID výsledku v databázi Scopus

2-s2.0-85117098360