Production of Strontianite from Celestite Ore in Carbonate Media

Hizli, İbrahim Göksel; Bilen, Ayşegül; Sezer, Raşit; Ertürk, Selim; Arslan, Cüneyt

doi:10.1007/978-3-319-52132-9_61

Cited by 2 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zoraga and Kahruman (2014) and Zoraga et al (2016) investigated the direct conversion of celestine to strontium carbonate in aqueous solutions of ammonium carbonate (the solutions contained different amounts of NH4 + , CO3 2− , HCO3 − , H2CO3 and NH3 species) with dissolved CO3 2− concentrations varying between 0.0089-0.133 mol/L and pH of approximately 8.9, and they observed that conversion of celestine to strontium carbonate decreased with increasing CO3 2− concentration. On the other hand, Hizli et al (2017) used aqueous ammonium carbonate solutions having stoichiometric amounts of carbonate and they reported that ammonium carbonate was not effective alone for the conversion and extra additions of ammonia to the solutions were needed for the complete conversion of celestine to strontium carbonate. In the above-mentioned studies, the conversion ratio of celestine to strontium carbonate was observed to increase with increasing conversion time.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to the conventional direct conversion process, celestine could also be converted to strontium carbonate directly with the use of sodium carbonate by mechanochemical (Obut et al, 2006;Erdemoglu et al, 2007;Setoudeh et al, 2010, Sezer andArslan, 2019) and hydrothermal (Suarez-Orduna et al, 2004 processes. On the other hand, Yan et al (2021) used sodium bicarbonate and Bingol et al (2012), Zoraga and Kahruman (2014), Zoraga et al (2016), Hizli et al (2017) and Icin et al (2021) used ammonium carbonate as the source of carbonate for the conversion of celestine to strontium carbonate. SrSO4(s) + CO3 2− (aq) ↔ SrCO3(s) + SO4 2− (aq) (ΔG 0 =−8.7 kJ/mol)…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Direct conversion of alkaline earth metal hydroxides and sulfates to carbonates in ammonia solutions

Ehsani¹,

Ehsani²,

Üçyıldız³

et al. 2021

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

In this study, the direct conversion behaviors of different alkaline earth metal solids (the hydroxides and the sulfates of alkaline earth metals Ca, Sr, Ba and Mg) to their corresponding carbonates in dissolved carbonate-containing pregnant solutions obtained by direct leaching of a smithsonite (ZnCO3) ore sample in aqueous ammonia solutions having different concentrations (4 M, 8 M and 13.3 M NH3) were investigated by using X-ray diffraction analyses at alkaline earth metal to dissolved carbonate mole ratios of 1:1 and 1:2, for revealing the conversion possibilities of dissolved carbonate in the pregnant solutions to solid carbonate by-products. The results of direct conversion experiments showed that Ca(OH)2, CaSO4•2H2O, Sr(OH)2•8H2O and Ba(OH)2•8H2O converted to their corresponding carbonates, SrSO4 partially converted to SrCO3 as observed by the presence of unreacted SrSO4 peaks in X-ray diffraction patterns of the converted solids, and BaSO4 did not convert to BaCO3 because of its lower solubility with respect to BaCO3. On the other hand, it was observed that Mg(OH)2 did not convert to MgCO3, but MgSO4•7H2O converted dominantly to an uncommon phase, which was tentatively identified as Mg5Zn3(CO3)2(OH)12•H2O. In the study, a complete discussion on the conversion behaviors of alkaline earth metal solids to their corresponding carbonates was given considering the differences between their solubility product constants and the changes in the free energies of the theoretical conversion reactions. In addition, infrared spectra and scanning electron microscope images of some of the converted solids were also presented for characterization purposes.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct conversion of alkaline earth metal hydroxides and sulfates to carbonates in ammonia solutions

Ehsani¹,

Ehsani²,

Üçyıldız³

et al. 2021

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

show abstract

“…Hizli et al, 22 used ammonium carbonate instead of Na 2 CO 3 to produce Strontianite from Turkish celestite concentrate. They found that ammonium carbonate alone was not effective in producing strontium carbonate from celestite ore.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency mechanochemical synthesis of Strontium carbonate nanopowder from Celestite

Dayani

AmirArjmand²,

Nouri‐Khezrabad

et al. 2020

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

In this study, the conversion of Celestite to SrCO 3 was studied by wet mechanochemical synthesis in a high-energy ball mill and treatment with Na 2 CO 3. For this purpose, solid strontium carbonate and soluble Na 2 SO 4 were obtained after wet milling of Celestite powder and sodium carbonate. The solid phase was washed with water at room temperature by filter pressing. X-Ray diffraction patterns showed that the SrCO 3 nanopowder was synthesized and conversion boosted with increasing the milling time up to 8 hours Also, Rietveld refinement analysis was used to calculate the fraction of SrCO 3 as well as structural properties of synthesized samples. It was found that initial Celestite could be converted to strontium carbonate with a purity more than 98% using high-energy milling without simultaneous heating. The optimum milling time was determined as 4 hours resulting in formation of nanopowders with an average particle size around 90 nm. Field Emission Scanning Electron Microscopy (FE-SEM), clearly showed the nanoscale structure of the synthesized powders.

show abstract

Production of Strontianite from Celestite Ore in Carbonate Media

Cited by 2 publications

References 9 publications

Direct conversion of alkaline earth metal hydroxides and sulfates to carbonates in ammonia solutions

Direct conversion of alkaline earth metal hydroxides and sulfates to carbonates in ammonia solutions

High‐efficiency mechanochemical synthesis of Strontium carbonate nanopowder from Celestite

Contact Info

Product

Resources

About