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Recycling lithium mine tailings in the production of low temperature (700–900 °C) ceramics: Effect of ladle slag and sodium compounds on the processing and final properties

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)332-344
Number of pages13
JournalConstruction and building materials
Volume221
DOIs
Publication statusPublished - 10 Oct 2019
Publication typeA1 Journal article-refereed

Abstract

This paper deals with the valorization of quartz and felspar rich lithium mine tailings (QFS) in the development of construction materials. Ladle slag was used as green strength increasing agent. Sodium hydroxide and carbonate were used as fluxing agents to allow sintering at 700–900 °C. Of these, sodium hydroxide was found to be the more efficient. The sintered ceramics were characterized by X-ray diffraction, scanning electron microscopy, compressive test, water absorption, apparent density and dilatometry; the results were found to comply with ASTM C62-99 specifications for building brick, and interesting for a sustainable use of resources.

Keywords

  • Building applications, Ceramic, Fluxing agent, Ladle slag, Lithium mine tailings, Sodium compounds

Publication forum classification

Field of science, Statistics Finland