Production of defluorinated dicalcium phosphate from phosphate rock concentrate |
| |
| Authors: | AMB Freitas M Giulietti |
| |
| Affiliation: | 1. Chemical Engineering Department, Federal University of S?o Carlos, P.O. Box 676, CEP 13565-905, S?o Carlos - SP, Brazil
2. Chemistry Division of Institute for Technological Research - IPT, P. O. Box 7141, CEP 01064 - 970, S?o Paulo - SP, Brazil
|
| |
| Abstract: | A new process to produce defluorinated dicalcium phosphate (DCP) using phosphate rock concentrate has been developed. This
new process has as main characteristic the low concentration of P2O5 in the liquid phase. The process comprises three main steps: solubilization of the phosphate rock concentrate with sulfuric
acid, defluorination of the phosphoric acid solution with potassium sulfate and neutralization of the phosphoric acid solution
with calcium hydroxide. The P2O5 precipitated in the pH range between 2.00 and 5.00 consisted basically of anhydrous dicalcium phosphate.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
| Keywords: | animal food dicalcium phosphate mineralsupplement phosphate rock solubilization |
| 本文献已被 SpringerLink 等数据库收录！ |
|
