Abstract
The technology of in-situ and dump leaching, used widely by hydrometallurgists, can be applied with advantage to the exploitation of phosphate rock deposits especially those low in limestone. Nitric or hydrochloric acids of certain concentrations would be used instead of H2SO4 and the solutions obtained treated to remove radium and recover uranium and the lanthanides if desired, then evaporated to crystallize the double salt CaXH2PO4⋅H2O, where X = Cl or NO3; this can be decomposed at 200°–250°C to form dicalcium phosphate, CaHPO4, a high grade marketable product. Nearly all the acid required for leaching can be regenerated and recycled.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.