Mogućnosti dobijanja kalcijuma iz karbonatnih mineralnih sirovina Republike Srbije
The possibilities of obtaining metallic calcium from Serbian carbonate mineral raw materials

2014
Authors
Sokić, Miroslav
Matković, Vladislav
Marković, Branislav

Gulišija, Zvonko
Patarić, Aleksandra

Mihailović, Marija

Janjušević, Zoran
Article (Published version)
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Show full item recordAbstract
Eksperimentalnim istraživanjima su definisani kako tehnološka šema dobijanja kalcijuma iz krečnjaka aluminotermijskim procesom tako i osnovni radni parametri pojedinih tehnoloških faza. Uzorci krečnjaka koji su korišćeni u radu imaju visok sadržaj Mg, Na i K. Rendgenska analiza je pokazala da uzorci uglavnom sadrže kalcit i u manjoj količini dolomit. Na početku je ispitan uticaj temperature, vremena i granulometrijskog sastava na kalcinaciju kalcijum-karbonata. Vreme trajanja procesa disocijacije je 10-15 min na 1200 °C i povećava se sa smanjenjem veličine čestica do 5 mm. Nakon toga, ispitana je aluminotermijska redukcija kalcijum-oksida. Na temperaturi od 1200 °C i vakuumu od 3 KPa proces redukcije se završava za 2 h. Analiza hemijskog sastava kalcijum-oksida i kalcijuma pokazuje povećan sadržaj magnezijum-oksida i oksida alkalnih metala, posebno natrijuma.
We present experimental investigations that define both the technological scheme of calcium production from limestone by aluminothermic process and the basic operating parameters of the particular technological phases. The limestone with high content of Mg, Na and K was used in the study. X-ray analysis reveals that the samples contain mainly calcite with small amount of dolomite. At first, the effects of temperature, time and granulometry on the calcium carbonate calcination were examined. The dissociation process was completed in 10-15 min at 1200 °C, and the dissociation rate increased with decreasing particle size down to 5 mm. Afterwards, the aluminothermic reduction process of calcium oxide was investigated. At a temperature of 1200 °C and vacuum of at least 3 kPa, the reduction process completed within 2 h. The chemical composition of calcium oxide and calcium showed increased content of magnesium oxide and alkaline oxides (especially sodium).
Keywords:
krečnjak / kalcinacija / kalcijum-oksid / kalcijum / aluminotermija / limestone / calcium / calcium oxide / calcination / aluminothermicSource:
Chemical Industry and Chemical Engineering Quarterly / CICEQ, 2014, 20, 3, 397-405Publisher:
- Savez hemijskih inženjera, Beograd
Funding / projects:
- The development of casting technologies under the influence of electromagnetic field and technologies of hot plastic forming of 7000 series aluminium alloys for special purposes (RS-34002)
- Developing technological processes for nonstandard copper concentrates processing with the aim to decrease pollutants emission (RS-34023)
DOI: 10.2298/CICEQ120817022S
ISSN: 1451-9372
WoS: 000343922200011
Scopus: 2-s2.0-84919794088
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Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Sokić, Miroslav AU - Matković, Vladislav AU - Marković, Branislav AU - Gulišija, Zvonko AU - Patarić, Aleksandra AU - Mihailović, Marija AU - Janjušević, Zoran PY - 2014 UR - https://ritnms.itnms.ac.rs/handle/123456789/300 AB - Eksperimentalnim istraživanjima su definisani kako tehnološka šema dobijanja kalcijuma iz krečnjaka aluminotermijskim procesom tako i osnovni radni parametri pojedinih tehnoloških faza. Uzorci krečnjaka koji su korišćeni u radu imaju visok sadržaj Mg, Na i K. Rendgenska analiza je pokazala da uzorci uglavnom sadrže kalcit i u manjoj količini dolomit. Na početku je ispitan uticaj temperature, vremena i granulometrijskog sastava na kalcinaciju kalcijum-karbonata. Vreme trajanja procesa disocijacije je 10-15 min na 1200 °C i povećava se sa smanjenjem veličine čestica do 5 mm. Nakon toga, ispitana je aluminotermijska redukcija kalcijum-oksida. Na temperaturi od 1200 °C i vakuumu od 3 KPa proces redukcije se završava za 2 h. Analiza hemijskog sastava kalcijum-oksida i kalcijuma pokazuje povećan sadržaj magnezijum-oksida i oksida alkalnih metala, posebno natrijuma. AB - We present experimental investigations that define both the technological scheme of calcium production from limestone by aluminothermic process and the basic operating parameters of the particular technological phases. The limestone with high content of Mg, Na and K was used in the study. X-ray analysis reveals that the samples contain mainly calcite with small amount of dolomite. At first, the effects of temperature, time and granulometry on the calcium carbonate calcination were examined. The dissociation process was completed in 10-15 min at 1200 °C, and the dissociation rate increased with decreasing particle size down to 5 mm. Afterwards, the aluminothermic reduction process of calcium oxide was investigated. At a temperature of 1200 °C and vacuum of at least 3 kPa, the reduction process completed within 2 h. The chemical composition of calcium oxide and calcium showed increased content of magnesium oxide and alkaline oxides (especially sodium). PB - Savez hemijskih inženjera, Beograd T2 - Chemical Industry and Chemical Engineering Quarterly / CICEQ T1 - Mogućnosti dobijanja kalcijuma iz karbonatnih mineralnih sirovina Republike Srbije T1 - The possibilities of obtaining metallic calcium from Serbian carbonate mineral raw materials EP - 405 IS - 3 SP - 397 VL - 20 DO - 10.2298/CICEQ120817022S UR - conv_391 ER -
@article{ author = "Sokić, Miroslav and Matković, Vladislav and Marković, Branislav and Gulišija, Zvonko and Patarić, Aleksandra and Mihailović, Marija and Janjušević, Zoran", year = "2014", abstract = "Eksperimentalnim istraživanjima su definisani kako tehnološka šema dobijanja kalcijuma iz krečnjaka aluminotermijskim procesom tako i osnovni radni parametri pojedinih tehnoloških faza. Uzorci krečnjaka koji su korišćeni u radu imaju visok sadržaj Mg, Na i K. Rendgenska analiza je pokazala da uzorci uglavnom sadrže kalcit i u manjoj količini dolomit. Na početku je ispitan uticaj temperature, vremena i granulometrijskog sastava na kalcinaciju kalcijum-karbonata. Vreme trajanja procesa disocijacije je 10-15 min na 1200 °C i povećava se sa smanjenjem veličine čestica do 5 mm. Nakon toga, ispitana je aluminotermijska redukcija kalcijum-oksida. Na temperaturi od 1200 °C i vakuumu od 3 KPa proces redukcije se završava za 2 h. Analiza hemijskog sastava kalcijum-oksida i kalcijuma pokazuje povećan sadržaj magnezijum-oksida i oksida alkalnih metala, posebno natrijuma., We present experimental investigations that define both the technological scheme of calcium production from limestone by aluminothermic process and the basic operating parameters of the particular technological phases. The limestone with high content of Mg, Na and K was used in the study. X-ray analysis reveals that the samples contain mainly calcite with small amount of dolomite. At first, the effects of temperature, time and granulometry on the calcium carbonate calcination were examined. The dissociation process was completed in 10-15 min at 1200 °C, and the dissociation rate increased with decreasing particle size down to 5 mm. Afterwards, the aluminothermic reduction process of calcium oxide was investigated. At a temperature of 1200 °C and vacuum of at least 3 kPa, the reduction process completed within 2 h. The chemical composition of calcium oxide and calcium showed increased content of magnesium oxide and alkaline oxides (especially sodium).", publisher = "Savez hemijskih inženjera, Beograd", journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ", title = "Mogućnosti dobijanja kalcijuma iz karbonatnih mineralnih sirovina Republike Srbije, The possibilities of obtaining metallic calcium from Serbian carbonate mineral raw materials", pages = "405-397", number = "3", volume = "20", doi = "10.2298/CICEQ120817022S", url = "conv_391" }
Sokić, M., Matković, V., Marković, B., Gulišija, Z., Patarić, A., Mihailović, M.,& Janjušević, Z.. (2014). Mogućnosti dobijanja kalcijuma iz karbonatnih mineralnih sirovina Republike Srbije. in Chemical Industry and Chemical Engineering Quarterly / CICEQ Savez hemijskih inženjera, Beograd., 20(3), 397-405. https://doi.org/10.2298/CICEQ120817022S conv_391
Sokić M, Matković V, Marković B, Gulišija Z, Patarić A, Mihailović M, Janjušević Z. Mogućnosti dobijanja kalcijuma iz karbonatnih mineralnih sirovina Republike Srbije. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2014;20(3):397-405. doi:10.2298/CICEQ120817022S conv_391 .
Sokić, Miroslav, Matković, Vladislav, Marković, Branislav, Gulišija, Zvonko, Patarić, Aleksandra, Mihailović, Marija, Janjušević, Zoran, "Mogućnosti dobijanja kalcijuma iz karbonatnih mineralnih sirovina Republike Srbije" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 20, no. 3 (2014):397-405, https://doi.org/10.2298/CICEQ120817022S ., conv_391 .