Disposal of mine tailings via geopolymerization
By Xiaolong Zhang, Zhang Shiyu, L. Hui, Yingliang Zhao. 2020
158 citations recorded by the source corpus.
Abstract From daily life to infrastructure and national defense construction, mining has been key in human history. However, within their vigorous development process, mining activities are also result in many negative impacts on both the environment and human health. Mine tailings are among the most threatening byproducts of ore processing. Luckily, they can be recycled through various approaches, such as via the promising technique of geopolymerization, converting waste into value. This paper reviews some of the recent efforts in this direction, focusing on the following aspects: geopolymer production using mine tailings as a single precursor; feasibility of the improvement, through supplementary materials incorporation; pretreatments (including mechanical activation, calcination, and alkali roasting) to enhance the reactivity of the mine tailings and the resulting geopolymer. Preparation of geopolymers using mine tailings as a single precursor normally presented lower compressive strength; adding supplementary materials seemed to show more noticeable effective on the strength development than pretreatment of mine tailings.
Subfields: Building and Construction, Civil and Structural Engineering
View Paper: https://www.semanticscholar.org/paper/0bdea070656bc11bb48a10c5d2cf3df395496bca
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In Building and Construction
In Civil and Structural Engineering
Citations in the corpus
- Alkali-Activated Materials and Geopolymer: a Review of Common Precursors and Activators Addressing Circular Economy (2021, background): “Depending on the size, glass powder is less reactive than major SCMs; yet the use finer particles, addition of activators, and proper curing techniques have been reported to be able to compensate for it Mine tailings [132, 133] Tailings as result of mining operations differ in their compositional co”