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- W2364705972 abstract "A new preparation method (reduction-decomposition process) for high purity SrCO_3 was investigated, which mainly includes four processes: reduction, leaching, purification and precipitation. The affecting factors about S~(2-) behaviors in leaching process and the effects of variables on purity and particle sizes distribution of SrCO_3 were analyzed theoretically and practically. It is concluded that with the increase of temperature or decrease of pH value in leaching process, the strontium recovery increases, but SrS decomposes and hydrogen sulphide (H_2S) gas discharges. The purity of SrCO_3 is dependent on dissolution-recrystallization times, for example, the purity of (SrCO_3) is as high as 99.97% when it is recrystallized three times. Besides, the solution concentration of Sr(OH)_2 and flow rate of CO_2 have important effects on particle size distribution of SrCO_3 particles, especially, the particle sizes of (SrCO_3) meanly distribute in 0.11.0 μm when the flow rate of CO_2 is about 2 000 mL/min and other parameters are invariable." @default.
- W2364705972 created "2016-06-24" @default.
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- W2364705972 date "2004-01-01" @default.
- W2364705972 modified "2023-09-25" @default.
- W2364705972 title "S~(2-) behaviors analysis in leaching SrS and precipitating high purity SrCO_3 by reduction-decomposition process" @default.
- W2364705972 hasPublicationYear "2004" @default.
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