PRODUCING CALCIUM NITRATE AND RARE-EARTH ELEMENT CONCENTRATES BY PHOSPHOGYPSUM CONVERSION

Authors

  • S. V. Vlasjan Dneprodzerzhinsk state technical university
  • N. D. Voloshin Dneprodzerzhinsk state technical university
  • A. B. Shestozub Dneprodzerzhinsk state technical university

DOI:

https://doi.org/10.5755/j01.ct.64.2.6024

Keywords:

phosphogypsum, ammonium & sodium carbonate, calcium nitrate, a concentrate of rare-earth elements

Abstract

Experimental researches of the dissolution of calcium carbonate obtained as a result of phosphogypsum conversion by ammonium or sodium carbonate and nitric acid with obtaining a concentrate of rare-earth elements and other liquid products have been performed. The structure of phosphochalk and the outlet half-product is presented. The substantiation of recycling expediency of phosphogypsum waste – phosphoric acid and phosphoric fertilizers has been carried out.

 DOI: http://dx.doi.org/10.5755/j01.ct.64.2.6024

Downloads

Published

2013-12-30

Issue

Vol. 64 No. 2 (2013)

Section

TECHNOLOGY OF INORGANIC MATERIALS

License

Copyright terms are indicated in the Republic of Lithuania Law on Copyright and Related Rights, Articles 4-37.