Calcination of Strontium Carbonate in Rotary Kiln Furnace

The calcination of strontium carbonate (SrCO3) in rotary kilns at temperatures as high as 1300 °C is a common industrial practice. This study aims to investigate the effects of adding metallurgical coke to the calcination process in a laboratory-scale rotary kiln, where partial melting of the powders typically occurs around 1150 °C due to CO2 pressure. Through experimentation, different compositions of coke (0–30%) were introduced into the SrCO3 feed, and the calcination was performed at temperatures ranging from 1100 to 1300 °C. The products were analyzed using X-ray diffraction (XRD) to determine the efficiency of calcination. The results indicated that the maximum calcination efficiency was achieved with a 15% coke addition at 1200 °C, demonstrating that carbon additions can effectively mitigate agglomeration issues caused by melt adhesion to furnace walls. The findings provide valuable insights for optimizing the calcination process of strontium carbonate in metallurgical applications.