Document Type : Short Paper


1 Chemical Engineering, Siddaganga Institute of Technology, Tumkur

2 Chemical Engineering Department Siddaganga Institut eof Technology Tumakuru

3 Assistant Professor, Chemical Engineering, Siddaganga Institute of Technology


In this work, the phosphate bonded refractory was developed using magnesium potassium phosphate cement. The Cement was prepared from the caustic calcined magnesium oxide with the addition of mono potassium phosphate. The characterization of the cement was done by XRD and SEM to examine the change in phase and morphology which occurs after the hydration of magnesium potassium phosphate cement which is in the struvite phase. To evaluate the physical, mechanical and thermal properties, refractory samples were casted and subsequently dried and fired at temperatures ranged from 1300 °C to 1500 °C. The effect of temperature on the bulk density, apparent porosity and crushing strength were analyzed. It was found that the properties of the chemically bonded refractory were better than the conventionally bonded calcium alumina cement refractory.


Main Subjects

  • Fan, S. and Chen, B., “Experimental study of phosphate salts influencing properties of magnesium phosphate cement”, Construction and Building Materials, 65, 480 (2014). (
  • Gupta, O. P., Fuel furnaces and refractories, Khanna Publication, Delhi, India, (2011).
  • Hipedingera, N., Sciana, A. and Agliettia, E., “Refractory concretes of chemical bond with diverse aggregates”, Procedia Materials Science, 1, 425 (2012). (
  • Kalyoncu, R. S., “Chemically bonded refractories-A review of the state of the art”, Refractory Materials, 32, 2 (1982).
  • Alamar, K. and Paulo, R. G., “Ceramic encapsulation of refractory and mineral residues based on potassium and magnesium phosphate”, Minerals Engineering, 25, 302 (2007). (
  • Luz, A. P., Gomes, D. T. and Pandolfelli, V. C., “High-alumina phosphate-bonded refractory castables: Al(OH)3 sources and their effects”, Ceramics International, 41, 9041 (2015). (
  • Zhang, T., Chen, H., Li, X. and Zhu, Z., “Hydration behavior of magnesium potassium phosphate cement and stability analysis of its hydration products through thermodynamic modelling”, Cement and Concrete Research, 1 (98), 101 (2017). (
  • Zhang, X., Li, G., Niu, M. and Song, Z., “Effect of calcium aluminate cement on water resistance and high-temperature resistance of magnesium-potassium phosphate cement”, Construction and Building Materials, 175, 768 (2018). (

Xu, B., Lothenbach, B. and Ma, H., “Properties of fly ash blended magnesium potassium phosphate mortars: Effect of the ratio between fly ash and magnesia”, Cement and Concrete Composites, 90, 169 (2018). (