<abstract xmlns="http://www.w3.org/1999/xhtml"><p>PAPRs (Partially Acidulated Phosphate Rocks) are the most prospective phosphate fertilizers, mainly through the use of the smaller amount of reagents and the ability to utilize low-grade phosphate rocks with a low content of P2O5. The aim of our studies was to investigate the temperature and moisture infl uence on the curing process of PAPR-type fertilizer products. Fertilizer preparations of a PAPR-type were obtained in the Atlas model-type apparatus (Syrris Ltd.). The curing temperature and the moisture content were controlled by the heating time of the reaction vessel and the degree of PAPR stoichiometric norm (ηPAPR). Our results indicate that increasing the curing temperature of the PAPR-type fertilizer product by 10oC can lead to a decrease in the moisture content of the fi nal product by an average value of 1.5% w/w. Additionally reducing the moisture content by 1% w/w may correspond to an increase in P2O5 content by an average value of 0.5% w/w.</p></abstract>

PAPRs (Partially Acidulated Phosphate Rocks) are the most prospective phosphate fertilizers, mainly through the use of the smaller amount of reagents and the ability to utilize low-grade phosphate rocks with a low content of P2O5. The aim of our studies was to investigate the temperature and moisture infl uence on the curing process of PAPR-type fertilizer products. Fertilizer preparations of a PAPR-type were obtained in the Atlas model-type apparatus (Syrris Ltd.). The curing temperature and the moisture content were controlled by the heating time of the reaction vessel and the degree of PAPR stoichiometric norm (ηPAPR). Our results indicate that increasing the curing temperature of the PAPR-type fertilizer product by 10oC can lead to a decrease in the moisture content of the fi nal product by an average value of 1.5% w/w. Additionally reducing the moisture content by 1% w/w may correspond to an increase in P2O5 content by an average value of 0.5% w/w.

Temperature and moisture influence on the curing process of PAPR-type fertilizer products

Wrocław University of Technology, Faculty of Chemistry, Institute of Inorganic Technology and Mineral Fertilizers, ul. Smoluchowskiego 25, 50 372 Wrocław, Poland

Polish Journal of Chemical Technology

PAPRs (Partially Acidulated Phosphate Rocks) are the most prospective phosphate fertilizers, mainly through the use of the smaller amount of reagents and the...

Temperature and moisture influence on the curing process of PAPR-type fertilizer products

Published Online: Oct 31, 2012

Page range: 77 - 82

DOI: https://doi.org/10.2478/v10026-012-0088-z

Keywords
PAPR, phosphate fertilizers, curing process, moisture content.

This content is open access.

Temperature and moisture influence on the curing process of PAPR-type fertilizer products

Published Online: Oct 31, 2012

Page range: 77 - 82

DOI: https://doi.org/10.2478/v10026-012-0088-z

KeywordsPAPR, phosphate fertilizers, curing process, moisture content.

This content is open access.

Keywords
PAPR, phosphate fertilizers, curing process, moisture content.