Designing a strong total tailings pastefill using cold-bonded tailings agglomerates
In: CIM bulletin, Jg. 93 (2000), Heft 1043, S. 119-122
academicJournal
- print, Illustration, 7 ref
Zugriff:
For many years the mining industry has used backfill as a means of partially disposing of their tailings. This accomplished method reduces surface disposal of tailings, while providing sound underground support, In recent years, the aim has been to further increase the use of tailings, specifically fine tailings within underground paste fills. Currently, a few Canadian mines are practicing the use of paste fill, with its application becoming increasingly more popular, deally, from a waste disposal perspective, a total tailings paste fill, made entirely of tailings and binders would be preferred. However, backfill strength criteria often limit the use of total tailings paste fills, which is a reason why paste fills are often supplemented with strength enhancing sand, gravel, or rock chips. Amaratunga and Annor (1989) first presented the concept of the Cold-Bond Tailings Agglomeration (CBTA) process. The Laurentian University Tailings Agglomeration Research Laboratory has since engaged in research into the application of the CBTA process, with reactive and non-reactive tailings, in the development of high strength backfill, with the aim of maximum utilization of fine tailings. This paper presents the concept, and results of agglomerating fine tailings into pellets, thereby creating a coarse aggregate for use in paste fills. Because imported aggregates are eliminated in this process, a total tailings paste fill is developed which fully utilizes its potentials as a means of disposing of tailings. In addition to the waste disposal advantage, results have shown that agglomerated tailings pellets, within a total tailings paste fill, significantly enhances strength and elastic modulus over a non-aggregate, total tailings paste fill. By utilizing this approach of creating aggregates though tailings agglomeration, and using them within a total tailings paste fill, surface disposal of tailings is minimized while providing a strong underground backfill. The paper also discusses the cost and operational benefit of this process.
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Designing a strong total tailings pastefill using cold-bonded tailings agglomerates
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Autor/in / Beteiligte Person: | AMARATUNGA, L. M |
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Zeitschrift: | CIM bulletin, Jg. 93 (2000), Heft 1043, S. 119-122 |
Veröffentlichung: | Montréal, PQ: Canadian Institute of Mining, Metallurgy and Petroleum, 2000 |
Medientyp: | academicJournal |
Umfang: | print, Illustration, 7 ref |
ISSN: | 0317-0926 (print) |
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