Obtaining Li2CO3 from zinnwaldite waste

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F09%3A00021752" target="_blank" >RIV/60461373:22310/09:00021752 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Obtaining Li2CO3 from zinnwaldite waste

Popis výsledku v původním jazyce

A zinnwaldite concentrate with 1.40% Li processed in this study was prepared from zinnwaldite wastes (0.21% Li) using dry magnetic and grain size separations. Zinnwaldite wastes originated from dressing Sn-W ores, which were mined in the past in the Czech Republic in Cinovec area. The extraction process of lithium, so called gypsum method consisted of sintering the concentrate with CaSO4 and Ca(OH)2, subsequent leaching of the sinters obtained in H2O, solution purification and precipitation of Li2CO3. It was observed that almost 96% lithium extraction was achieved if sinters prepared at 950°C were leached at 90°C, solid-to-liquid ratio = 10:1, reaction time 10 min. The weight ratio of the concentrate to CaSO4 to Ca(OH)2 was 6 : 4.2 : 2. Lithium carbonate product containing almost 99% Li2CO3 was separated from the condensed leach liquor, from which calcium was removed by carbonate precipitation.

Název v anglickém jazyce

Obtaining Li2CO3 from zinnwaldite waste

Popis výsledku anglicky

A zinnwaldite concentrate with 1.40% Li processed in this study was prepared from zinnwaldite wastes (0.21% Li) using dry magnetic and grain size separations. Zinnwaldite wastes originated from dressing Sn-W ores, which were mined in the past in the Czech Republic in Cinovec area. The extraction process of lithium, so called gypsum method consisted of sintering the concentrate with CaSO4 and Ca(OH)2, subsequent leaching of the sinters obtained in H2O, solution purification and precipitation of Li2CO3. It was observed that almost 96% lithium extraction was achieved if sinters prepared at 950°C were leached at 90°C, solid-to-liquid ratio = 10:1, reaction time 10 min. The weight ratio of the concentrate to CaSO4 to Ca(OH)2 was 6 : 4.2 : 2. Lithium carbonate product containing almost 99% Li2CO3 was separated from the condensed leach liquor, from which calcium was removed by carbonate precipitation.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DM - Tuhý odpad a jeho kontrola, recyklace

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F07%2F0499" target="_blank" >GA104/07/0499: Výzkum procesů pro separaci sloučenin Li, Rb a Cs</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Ceramics-Silikáty

ISSN

0862-5468

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

53

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

000270457900007

EID výsledku v databázi Scopus

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