ORIGINAL PAPER
The effect of hard coal fly ash substitution for cement on properties of high sulphide tailings cemented paste backfill
1
Karabuk University
2
Istanbul Technical University
Submission date: 2024-12-03
Final revision date: 2025-01-27
Acceptance date: 2025-05-17
Publication date: 2025-12-16
Gospodarka Surowcami Mineralnymi – Mineral Resources Management 2025;41(4):193-217
KEYWORDS
TOPICS
ABSTRACT
Cemented paste backfill (CPB) is a method used to fill the gaps in the underground production method. The main component of CPB is cement, which costs a high price. Therefore, some studies have continued in the search for materials to replace cement. In this context, the mechanical behavior of the material obtained following the substitution of ore preparation plant tailings from Kastamonu-Küre copper mine instead of cement using thermal power plant fly ash (FA) in certain proportions by weight was investigated. The results indicate that substituting FA in all cement proportions increases the compressive strength of the CBP mixtures. Up to 20% of the amount and cost of cement has been saved by using FA instead of portland cement (PC). Thus, there is an opportunity for a reduction in the amount of CO2 emissions, a greenhouse gas, from the cement production process.
Besides, an economic income was provided to the enterprise by reusing coal thermal power plant waste. As a result, significant benefits have been provided to the mining sector in terms of operation, environment, and cost.
FUNDING
This study was funded by Istanbul University-Cerrahpaşa with the project number FDK-2018-24707.
CONFLICT OF INTEREST
The Authors have no conflict of interest to declare.
METADATA IN OTHER LANGUAGES:
Polish
Wpływ zastąpienia cementu popiołem lotnym z węgla kamiennego na właściwości cementowanej pasty wypełniającej odpady wysokosiarkowe
odpady miedziowe, wysoka zawartość siarki, popiół lotny z węgla kamiennego, cement, cementowane wypełnienie pastowe (CPB)
Wypełnianie cementową pastą (CPB) to metoda stosowana do wypełniania szczelin w podziemnej metodzie wydobycia. Głównym składnikiem CPB jest cement, który charakteryzuje się wysoką ceną. W związku z tym kontynuowano badania nad poszukiwaniem materiałów, które mogłyby go zastąpić. W tym kontekście zbadano zachowanie mechaniczne materiału uzyskanego w wyniku zastąpienia odpadów z zakładu przeróbki rudy w kopalni miedzi Kastamonu-Küre zamiast cementu popiołem lotnym (FA) z elektrowni cieplnej w określonych proporcjach wagowych. Wyniki wskazują, że zastąpienie FA we wszystkich proporcjach cementu zwiększa wytrzymałość na ściskanie mieszanek CBP. Dzięki zastosowaniu FA zamiast cementu portlandzkiego (PC) zaoszczędzono do 20% ilości i kosztów cementu. Stwarza to możliwość zmniejszenia emisji CO2, gazu cieplarnianego, powstającego w procesie produkcji cementu. Ponadto ponowne wykorzystanie odpadów z elektrowni węglowej przyniosło przedsiębiorstwu korzyści ekonomiczne. W rezultacie sektor górniczy odniósł znaczące korzyści pod względem działalności, środowiska i kosztów.
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| eISSN: | 2299-2324 |
| ISSN: | 0860-0953 |
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