CQUniversity
Browse
s42461-023-00862-7.pdf (2 MB)

Investigating Effects of Reverse Osmosis-Treated Water on the Corrosion Rate of Chains in Armoured Face Conveyor for Longwall Mining

Download (2 MB)
journal contribution
posted on 2024-07-03, 05:23 authored by Jung-Hoon SulJung-Hoon Sul, B Probyn, Brendan Donnelly, Lasitha PiyathilakaLasitha Piyathilaka, S Jeong
Premature failure of armoured face conveyor (AFC) chains due to corrosion is a significant proportion of the unplanned downtime experienced on longwall equipment. The AFC chains are constantly in contact with water and wet coal. The premature failure issue of AFC chains has become more prominent since the introduction of longwall top-coal caving with its additional AFC. Reverse osmosis (RO) is a popular water treatment method for reducing salinity and dissolved solids, but its impact on the corrosion of the AFC chains is unclear. This study has been commissioned to investigate the direct effects of RO water on the corrosion of AFC chains. An immersion test was carried out using AFC chain steel submerged in two water samples: untreated dam water and treated water from an RO treatment plant. Elemental analysis was conducted for both water samples, and four corrosion indices were measured for both water samples. The RO water more vigorously dissolves calcium carbonate scales leading to increased corrosion of the AFC chains although the dam water has much higher levels of calcium, chloride, sulphate, sodium, and magnesium. Bicarbonate ions are the main alkaline factor of water that provides the buffering capacity to acids. Decreased alkalinity without balancing other ions in water causes high corrosivity and decreased scaling tendencies.

History

Volume

40

Issue

6

Start Page

2193

End Page

2204

Number of Pages

12

eISSN

2524-3470

ISSN

2524-3462

Publisher

Springer Science and Business Media LLC

Additional Rights

CC-BY 4

Language

en

Peer Reviewed

  • Yes

Open Access

  • Yes

Acceptance Date

2023-12-01

Era Eligible

  • Yes

Journal

Mining, Metallurgy and Exploration

Usage metrics

    CQUniversity

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC