The effect of the combined addition of copper, lithium and sulphur on the formation of Portland cement clinker

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F24%3APU151294" target="_blank" >RIV/00216305:26310/24:PU151294 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/10.1111/jmi.13293" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1111/jmi.13293</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jmi.13293" target="_blank" >10.1111/jmi.13293</a>

Result language

angličtina

Original language name

The effect of the combined addition of copper, lithium and sulphur on the formation of Portland cement clinker

Original language description

Both copper and lithium act as strong fluxes and lower the temperature of the clinker melt formation. Sulphur promotes the stabilisation of more hydraulically active modification of alite M1. It is expected that this combination could produce an alite clinker at significantly lower temperatures with high quality technological parameters. In this paper, the effect of combined oxides of copper, lithium and sulphur addition on the phase composition and clinker structure of Portland cement was investigated. The reference raw meal was prepared from common cement raw materials. Each of the mentioned oxides was added to the reference raw meal in two different concentrations, and 8 combinations were prepared. Chemically pure compounds (NH4)2SO4, CuO and Li2CO3 were used as a source of these oxides. The raw meals were burned to equilibrium at 1450 degrees C. Their phase composition was determined by X-ray diffraction analysis, the microstructure was monitored by optical microscopy, and the microchemistry of the clinker phases was observed by electron microscopy with EDS analysis. It was found that in samples with high lithium or copper content, there is an increase in belite and free lime at the expense of alite. The combination of Cu + Li has the most negative effect, followed by Li alone and Cu alone. The higher SO3 content slightly offsets this negative effect. Clinker is the main intermediate in the production of Portland cement. It is formed at high temperatures in a rotary kiln and its main component is the mineral alite - tricalcium silicate. Alite crystallises in several polymorphic modifications, and sulphur stabilises the modification that increases cement strength. Both copper and lithium act as strong fluxes and lower the temperature of the clinker melt formation. The addition of a combination of these 3 elements to the raw meal for clinker burning is expected to lower the melt formation temperature, and clinker with a high alite content will be formed at lower t

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

21100 - Other engineering and technologies

Project

<a href="/en/project/GA23-05082S" target="_blank" >GA23-05082S: The research on the combined effect of sulfur, copper and lithium oxides on the formation and properties of Portland cement clinker.</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Microscopy

ISSN

0022-2720

e-ISSN

1365-2818

Volume of the periodical

294

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

225-232

UT code for WoS article

001194227700001

EID of the result in the Scopus database

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