公开(公告)号：US4132760A

公开(公告)日：1979-01-02

申请号：US703208

申请日：1976-07-07

Applicant: Fernando Ore ,  John D. Ellis ,  James H. Moore

Inventor： Fernando Ore ,  John D. Ellis ,  James H. Moore

IPC: A61K9/00 ,  B02C1/14 ,  C01B25/22 ,  C01F1/00 ,  C01B25/16 ,  C01F5/00 ,  C22B26/20

CPC classification number: B02C1/14 ,  A61K9/007 ,  C01B25/22

Abstract: Phosphate rock and sulfuric acid are reacted under conditions which result in the formation calcium sulfate hemihydrate and phosphoric acid of about 30% to about 55% P.sub.2 O.sub.5. A two vessel reaction system is used in which the reaction slurry undergoes inter- and intra- vessel circulation. This results in excellent dispersion of reactants and minimization of temperature and concentration gradients throughout the slurry.

Abstract translation: 磷酸盐岩和硫酸在导致形成约30％至约55％的P2 O 5的硫酸钙半水合物和磷酸的条件下反应。 使用反应浆料经受血管内和血管内循环的二血管反应系统。 这导致反应物的优异分散和整个浆料中温度和浓度梯度的最小化。

公开(公告)号：US4082836A

公开(公告)日：1978-04-04

申请号：US676522

申请日：1976-04-13

Applicant: Fernando Ore

Inventor： Fernando Ore

IPC: B01D11/04 ,  C01B25/238 ,  C01B25/16

CPC classification number: B01D11/0457 ,  C01B25/238

Abstract: A process for the extraction of metallic impurities from an unpurified aqueous phosphoric acid phase by solvent extraction employing an organic extractant phase containing an organic sulfonic acid in its H.sup.+ form. After the extraction step and separation of the organic extractant phase from the aqueous phosphoric acid phase, residual P.sub.2 O.sub.5 values are recovered from the organic extractant phase by washing the organic extractant phase with a wash phase consisting of water or dilute phosphoric acid. The sulfonic acid in the organic extractant phase can be regenerated to its H.sup.+ form with a mineral acid and recycled.