Patents Assigned to ECOPHOS
  • Patent number: 10464853
    Abstract: A source of phosphate for agriculture and food industry comprises a phosphate salt in solid form of formula Mn(HPO4)y.zH2O in which M is Na, K, NH4, n=2, and y=1; or M is Ca, n=1, y=1; or M is Al or Fe, n=2, y=3; and in which z is 0, 1 or 2, wherein said phosphate salt has a phosphate content expressed as a P2O5 content of between 30 and 50% by weight of the phosphate salt, and it has a cadmium content lower than 0.40 ppm.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: November 5, 2019
    Assignee: ECOPHOS S.A.
    Inventor: Mohamed Takhim
  • Patent number: 9963759
    Abstract: Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40° C.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 8, 2018
    Assignee: ECOPHOS S.A.
    Inventor: Mohamed Takhim
  • Publication number: 20160312333
    Abstract: Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40° C.
    Type: Application
    Filed: December 19, 2014
    Publication date: October 27, 2016
    Applicant: ECOPHOS S.A.
    Inventor: MOHAMED TAKHIM
  • Publication number: 20160297719
    Abstract: A source of phosphate for agriculture and food industry comprises a phosphate salt in solid form of formula Mn(HPO4)y.zH2O in which M is Na, K, NH4, n=2, and y=1; or M is Ca, n=1, y=1; or M is Al or Fe, n=2, y=3; and in which z is 0, 1 or 2, wherein said phosphate salt has a phosphate content expressed as a P2O5 content of between 30 and 50% by weight of the phosphate salt, and it has a cadmium content lower than 0.40 ppm.
    Type: Application
    Filed: December 2, 2014
    Publication date: October 13, 2016
    Applicant: ECOPHOS S.A.
    Inventor: MOHAMED TAKHIM
  • Patent number: 7687046
    Abstract: A method of preparing a phosphoric acid salt which includes at least one attack on phosphate ore by an aqueous solution of hydrochloric acid, with the formation of an attack liquor, a first separation, in the attack liquor, between an insoluble solid phase and an aqueous phase, a neutralization of the separated aqueous phase by the addition of a calcium compound in order to form, with phosphate ions contained in this aqueous phase, a calcium phosphate insoluble in water, which precipitates, and a second separation, in the neutralized aqueous phase, between a liquid phase and a precipitated solid phase based on the calcium phosphate insoluble in water, wherein the attack on the phosphate ore includes dissolving the phosphate in the ore, the attack liquor containing this phosphate in the form of phosphate ions, and the solid phase separated from the attack liquor contains impurities and the aqueous phase separated from the attack liquor contains the phosphate ions thereof, chloride ions and calcium ions, this a
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: March 30, 2010
    Assignee: ECOPHOS
    Inventor: Mohamed Takhim
  • Patent number: 7361323
    Abstract: A method for the production of phosphoric acid comprising a phosphate ore attack by a first aqueous chlorohydric acid solution, separation in the attack liquor between a solid insoluble phase containing impurities and a separate aqueous phase comprising phosphate ions in a solution, chloride ions and calcium ions, neutralization of said attack phase separated from the liquor by adding a calcium compound so that water-insoluble calcium phosphate can be formed with said phosphate ions, precipitating a separation in said neutralized aqueous phase comprising chloride ions and calcium ions in a solution and a solid precipitated phase based on said water-insoluble calcium phosphate, and solubilization of at least one part of the precipitated solid phase in a separated manner in a second aqueous chlorohydric acid solution, with formation of an aqueous solution containing phosphate ions, chloride ions and calcium ions to be extracted by an organic extractant in a liquid-liquid-type extraction.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: April 22, 2008
    Assignee: ECOPHOS
    Inventor: Mohamed Takhim
  • Patent number: 6989136
    Abstract: The invention concerns a method for producing phosphoric acid, which consists in: at least an attack of phosphate ore with an attacking liquid containing soluble phosphate ions, forming of an attacking product, separating in the attacking product between an insoluble solid phase containing impurities and a liquid phase having soluble phosphate ions and calcium ions, introducing in the separated liquid phase an acid stronger than phosphoric acid and which forms, with said calcium ions, a soluble calcium salt, and isolating a solution of said calcium salt, not contaminated by the impurities, thereby obtaining a phosphoric acid solution.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: January 24, 2006
    Assignee: ECOPHOS
    Inventor: Mohamed Takhim