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Polish Journal of Chemical Technology

The Journal of West Pomeranian University of Technology, Szczecin

4 Issues per year


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ISSN
1899-4741
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Volume 16, Issue 1 (Mar 2014)

Issues

The synthesis of tripolyphosphate using a one-stage method and a laboratory rotary kiln

Zygmunt Kowalski
  • Corresponding author
  • Cracow University of Technology, Institute of Chemistry and Inorganic Technology, Warszawska 24, 31-155 Cracow, Poland
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/ Agnieszka Makara
  • Cracow University of Technology, Institute of Chemistry and Inorganic Technology, Warszawska 24, 31-155 Cracow, Poland
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2014-03-25 | DOI: https://doi.org/10.2478/pjct-2014-0006

Abstract

In the study, sodium tripolyphosphate (STPP) was obtained according to the one-stage method. Batch mixes with varied degrees of soda ash neutralization were produced using thermal or wet processing phosphoric acid and/ or recycled STPP calcined in a laboratory rotary kiln. Chromatographic analysis of the phosphate forms showed that products containing as much as 94.73% of a single component were produced. At STPP recycling rates of 2.5 and 5, products with a low bulk density ranging between 0.437-0.547 kg/dm3 were obtained. The recycling of STPP reduces the insoluble substance content, which affects the properties of the product. The phase composition of the products largely depends on the type of recycled phase of sodium tripolyphosphate (phase I and/or phase II) and the calcining temperature.

Keywords : sodium tripolyphosphate; rotary kiln; calcining; one-stage method

References

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About the article

Published Online: 2014-03-25

Published in Print: 2014-03-01


Citation Information: Polish Journal of Chemical Technology, ISSN (Online) 1899-4741, ISSN (Print) 1509-8117, DOI: https://doi.org/10.2478/pjct-2014-0006.

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