Effect of Sodium Carbonate Concentration on Leaching Property of Sintered Clinkers with Low A/S Ratio

Abstract:

The effect of sodium carbonate concentration on alumina leaching of low A/S ratio clinkers and SiO2 concentration in leached liquor was studied in this paper. The clinker with the Al2O3/SiO2 mass ratio of 1.0 (the molar ratios of CaO/SiO2 and Na2O/Al2O3 are 2.0 and 1.05) was sintered at 1230°C using AR reagents. The alumina leaching rate and SiO2 concentration in leached liquor increase with the increase of sodium carbonate concentration, and the alumina leaching rate reaches its maximum of 96.36% when the sodium carbonate concentration is 15g/L. The results of XRD indicate that sodium carbonate can inhibit the formation of hydrogarnet, and there is almost no formation of hydrogarnet when the sodium carbonate concentration is 15g/L.

• Periodical: Advanced Materials Research (Volumes 581-582)
• Pages: 847-850
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.581-582.847
• Online since: October 2012
• Authors: Hai Yan Yu, Shuang Zhang, Wen Fang Wu, Xiao Lin Pan, Shi Wen Bi
• Keywords: Clinker, Hydrogarnet, Leaching, SiO₂, Sodium Carbonate

References

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