Slovak dolomite as a raw material source for metal magnesium production

Zuzana  Danková; Alexandra  Bekényiová; Jaroslav Briančin; Zuzana  Kollová; Erika  Fedorová; Pavel  Bačo

doi:10.5937/ror2501057D

Autori

Zuzana Danková State Geological Institute of Dionýz Štúr, Bratislava, Slovak Republic Author
Alexandra Bekényiová State Geological Institute of Dionýz Štúr, Bratislava, Slovak Republic Author
Jaroslav Briančin Institute of Geotechnics, Slovak Academy of Sciences, Košice, Slovak Republic Author
Zuzana Kollová State Geological Institute of Dionýz Štúr, Bratislava, Slovak Republic Author
Erika Fedorová State Geological Institute of Dionýz Štúr, Bratislava, Slovak Republic Author
Pavel Bačo State Geological Institute of Dionýz Štúr, Bratislava, Slovak Republic Author

DOI:

https://doi.org/10.5937/ror2501057D

Ključne reči:

Dolomit, kalcinacija, siilikotermička redukcija, metalni magnezijum

Apstrakt

U cilju obezbeđivanja samodovoljnosti i stabilnog snabdevanja ključnim mineralnim sirovinama unutar EU, uspostavljena je Evropska alijansa za kritične sirovine (ERMA). Jedan od njenih ključnih ciljeva je da osigura pristup održivim sirovinama i podrži istraživanje i eksploataciju ovih materijala unutar EU. Metalni magnezijum je uvršten na listu kritičnih minerala za zemlje EU od 2011. godine. Najpogodnije sirovine za proizvodnju Mg metodom silikotermičke redukcije su dolomit i magnezit, a Republika Slovačka poseduje značajne resurse ovih karbonatnih sirovina. Za tehnološko istraživanje, odabrano je šest uzoraka dolomita iz različitih ležišta. Uzorci su žareni na odabranim temperaturama i karakterisani korišćenjem diferencijalne termičke analize (DTA), rendgenske difrakcije (XRD) i hemijskih analiza. Rezultati objavljeni u radu sa konferencije od strane Danková et al. (2025) pokazali su da je za silikotermičku redukciju magnezijuma neophodno verifikovati uslove kalcinacije za svaki uzorak pojedinačno i odrediti uticaj aktivnosti hidratacije ili aktivnih mesta u njihovoj strukturi radi povećanja redukcije magnezijuma. Odabrani kalcinisani uzorci dolomita podvrgnuti su ponovljenoj DTA/TG analizi nakon perioda od dva meseca kako bi se utvrdila njihova hidratacija. Na osnovu ovih rezultata, uzorak dolomita označen kao ST-1, kalcinisan pod određenim uslovima, korišćen je za laboratorijski eksperiment silikotermičke redukcije magnezijuma. Dobijeni proizvod je analiziran pomoću SEM/EDX, čime je detektovan visok udeo metalnog magnezijuma (u at. %). minuta.

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