Production of alkali-activated binders from iron silicate fines

Author(s): John L. Provis, Angel L. Muñoz Gomez, Oday H. Hussein, Gaone Koma, Emanuela
Manolova, Vladislav Petrov
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 369-376
Total Pages: 8
Language : English

Abstract: The refinement of copper from its ores results in the generation of a large quantity of an iron silicate by-product, which holds potential value as a precursor for the production of alkali- activated cementitious binders. This paper reports the results of the analysis and optimisation of the chemical processes by which this can be achieved, with assessment of the leaching characteristics of the particulate precursor, the design and development of cementing systems of useable strength based on this precursor, and the microstructural characteristics of the products of this reaction process. Hybrid alkali-Portland activation of the iron silicate fines is demonstrated to give cementitious binders with desirable strength development characteristics, offering the opportunity for valorisation of this by-product into a useful material.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00