Influence of lithium on the formation and properties of Portland cement clinker

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of lithium on the formation and properties of Portland cement clinker

Popis výsledku v původním jazyce

Lithium consumption in the production of batteries and accumulators for energy storage is increasing. It can be foreseen that the amount of waste with higher content of this metal will grow. Since cement production is one of the main users of secondary and waste raw materials on a mass scale, it is desirable to monitor the impact of this element on the properties of clinker and cement. In laboratory conditions, the effect of minor oxide – Li2O on formation of Portland cement clinker was observed. The research deepens the current knowledge about the effect of this oxide on phase composition and structure of clinker. Last but not least, the influence on the technological parameters of cements prepared from Li doped clinkers was also observed. X-ray diffraction, DTA, optical and electron microscopy were employed as research methods. Among other things, it has been found that Li2O causes the decomposition of the alite, the major clinker phase, to a microcrystalline mixture of belite and free lime, depending on its content and clinker cooling rate. Moreover, cements with sufficient technological parameters were prepared from clinkers burned at 1350 °C with Li2O up to 1 wt.%.

Název v anglickém jazyce

Influence of lithium on the formation and properties of Portland cement clinker

Popis výsledku anglicky

Lithium consumption in the production of batteries and accumulators for energy storage is increasing. It can be foreseen that the amount of waste with higher content of this metal will grow. Since cement production is one of the main users of secondary and waste raw materials on a mass scale, it is desirable to monitor the impact of this element on the properties of clinker and cement. In laboratory conditions, the effect of minor oxide – Li2O on formation of Portland cement clinker was observed. The research deepens the current knowledge about the effect of this oxide on phase composition and structure of clinker. Last but not least, the influence on the technological parameters of cements prepared from Li doped clinkers was also observed. X-ray diffraction, DTA, optical and electron microscopy were employed as research methods. Among other things, it has been found that Li2O causes the decomposition of the alite, the major clinker phase, to a microcrystalline mixture of belite and free lime, depending on its content and clinker cooling rate. Moreover, cements with sufficient technological parameters were prepared from clinkers burned at 1350 °C with Li2O up to 1 wt.%.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20500 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Portland cement clinker. Papers and posters proceedings 15th International Congress on the Chemistry of Cement

ISBN

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ISSN

2523-935X

e-ISSN

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Počet stran výsledku

11

Strana od-do

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Název nakladatele

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Místo vydání

Prague, Czech Republic

Místo konání akce

Prague, Czech Republic

Datum konání akce

16. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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