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2019•Sakarya University Journal of ScienceOpen access

Mechanochemical conversion of domestic celestite mineral to SrC2O4 in the ammonium oxalate media

Mert Zorağa

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Abstract

The main raw material used in the production of Sr metal and its compounds is SrSO4 (celestite) mineral and Turkey has valuable Sr mineral deposits. One of the important steps in the production of Sr compounds is the production of strontium oxalate compound that does not contain alkali compunds as contamination. Strontium is used as a primary raw material in the production of oxalate, superconducting material and luminescence. In this study, the in situ conversion of SrSO4 into SrC2O4.H2O by ammonium oxalate is investigated and the effect of rotation speed, ball / sample ratio and solution concentration on the conversion reaction has been determined. It was found that the conversion of SrO4 to SrC2O4.H2O was increased with the increase in mole ratio of (NH4)2C2O4 to SrSO4. The maximum conversion, above 70 %, was achieved by using (NH4)2C2O4 / SrSO4 mole ratio: 1.5, rotation speed: 500 rpm and ball / sample ratio: 13.

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What this paper is about

The main raw material used in the production of Sr metal and its compounds is SrSO4 (celestite) mineral and Turkey has valuable Sr mineral deposits. One of the important steps in the production of Sr compounds is the production of strontium oxalate compound that does not contain alkali compunds as contamination. Strontium is used as a primary raw material in the production of oxalate, superconducting material and luminescence. In this study, the in situ conversion of SrSO4 into SrC2O4.H2O by ammonium oxalate is investigated and the effect of rotation speed, ball / sample ratio and solution concentration on the conversion reaction has been determined. It was found that the conversion of SrO4 to SrC2O4.H2O was increased with the increase in mole ratio of (NH4)2C2O4 to SrSO4. The maximum conversion, above 70 %, was achieved by using (NH4)2C2O4 / SrSO4 mole ratio: 1.5, rotation speed: 500 rpm and ball / sample ratio: 13.

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Available abstract

The main raw material used in the production of Sr metal and its compounds is SrSO4 (celestite) mineral and Turkey has valuable Sr mineral deposits. One of the important steps in the production of Sr compounds is the production of strontium oxalate compound that does not contain alkali compunds as contamination. Strontium is used as a primary raw material in the production of oxalate, superconducting material and luminescence. In this study, the in situ conversion of SrSO4 into SrC2O4.H2O by ammonium oxalate is investigated and the effect of rotation speed, ball / sample ratio and solution concentration on the conversion reaction has been determined. It was found that the conversion of SrO4 to SrC2O4.H2O was increased with the increase in mole ratio of (NH4)2C2O4 to SrSO4. The maximum conversion, above 70 %, was achieved by using (NH4)2C2O4 / SrSO4 mole ratio: 1.5, rotation speed: 500 rpm and ball / sample ratio: 13.

Key concepts: Ammonium oxalate, Oxalate, Raw material, Strontium, Ammonium acetate, Nuclear chemistry, Ammonium, Chemistry

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