TN2020000018A1 - MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE - Google Patents

MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE

Info

Publication number
TN2020000018A1
TN2020000018A1 TNP/2020/000018A TN2020000018A TN2020000018A1 TN 2020000018 A1 TN2020000018 A1 TN 2020000018A1 TN 2020000018 A TN2020000018 A TN 2020000018A TN 2020000018 A1 TN2020000018 A1 TN 2020000018A1
Authority
TN
Tunisia
Prior art keywords
phosphate
pulp
hydrochloric acid
treated
manufacture
Prior art date
Application number
TNP/2020/000018A
Other languages
French (fr)
Inventor
JLIDI Asma
Trabelsi Noureddine
Gdoura Mohamed
Jlidi Mongi
Original Assignee
Soc Poulina Group Holding
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soc Poulina Group Holding filed Critical Soc Poulina Group Holding
Priority to TNP/2020/000018A priority Critical patent/TN2020000018A1/en
Priority to PCT/TN2021/050001 priority patent/WO2021154164A1/en
Publication of TN2020000018A1 publication Critical patent/TN2020000018A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
    • C01B25/324—Preparation from a reaction solution obtained by acidifying with an acid other than orthophosphoric acid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/2208—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid
    • C01B25/2212—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid with hydrochloric acid or hydrogen chloride in aqueous medium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

La présente invention est relative à un procédé de fabrication de phosphate bicalcique DCP (monohydrogénophosphate) qualité alimentaire comprenant une attaque par un acide chlorhydrique concentré d'une pulpe de minerai de phosphate en suspension dans l'eau. La réaction d'attaque entre la pulpe de phosphate et l'acide chlorhydrique a lieu dans un réacteur tubulaire avec recirculation dans une cuve agitée maintenue sous dépression. La bouillie d'attaque subit une séparation qui fait intervenir l'ajout d'un floculant. La phase aqueuse obtenue est ensuite traitée pour éliminer les impuretés qu'elle renferme telles que les fluorures et les métaux. En troisième étape, la solution purifiée est neutralisée pour précipiter le phosphate bicalcique (DCP). Le procédé est caractérisé en ce que le résidu issu de la première séparation est traité pour être valorisable dans l'industrie des engrais et en ce que les émissions des gaz issues de l'étape de digestion du minerai de phosphate sont traitées par photoionisation sur charbon actif régénérable.The present invention relates to a process for the manufacture of dicalcium phosphate DCP (monohydrogen phosphate) food grade comprising an attack by a concentrated hydrochloric acid of a pulp of phosphate ore in suspension in water. The attack reaction between the phosphate pulp and the hydrochloric acid takes place in a tubular reactor with recirculation in a stirred tank maintained under vacuum. The attack slurry undergoes a separation which involves the addition of a flocculant. The aqueous phase obtained is then treated to remove the impurities it contains such as fluorides and metals. In the third step, the purified solution is neutralized to precipitate dicalcium phosphate (DCP). The process is characterized in that the residue from the first separation is treated to be recoverable in the fertilizer industry and in that the gas emissions from the phosphate ore digestion step are treated by photoionization on carbon regenerative asset.

TNP/2020/000018A 2020-01-31 2020-01-31 MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE TN2020000018A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TNP/2020/000018A TN2020000018A1 (en) 2020-01-31 2020-01-31 MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE
PCT/TN2021/050001 WO2021154164A1 (en) 2020-01-31 2021-01-27 Method for manufacturing feed grade dicalcium phosphate by reacting a concentrated hydrochloric acid on a phosphate ore pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TNP/2020/000018A TN2020000018A1 (en) 2020-01-31 2020-01-31 MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE

Publications (1)

Publication Number Publication Date
TN2020000018A1 true TN2020000018A1 (en) 2021-10-04

Family

ID=74673300

Family Applications (1)

Application Number Title Priority Date Filing Date
TNP/2020/000018A TN2020000018A1 (en) 2020-01-31 2020-01-31 MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE

Country Status (2)

Country Link
TN (1) TN2020000018A1 (en)
WO (1) WO2021154164A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051521A (en) 1964-02-20 1966-12-14 Israel Mining Ind Inst For Res Improvements in or relating to a process for the production of substantially iron free aqueous solution of phosphoric acid
IL44977A (en) * 1974-06-05 1976-09-30 Israel Chem Ltd Process for the manufacture of feed-grade dicalcium phosphate and phosphoric acid
BE1015013A3 (en) * 2002-06-28 2004-08-03 Ecophos Process phosphoric acid production and / or salt thereof and products obtained.
BE1015840A3 (en) * 2003-12-24 2005-10-04 Ecophos Process leading ore phosphate.
EA201691099A1 (en) * 2013-12-02 2016-10-31 Экофос С.А. NEW SOURCE OF PHOSPHATE FOR AGRICULTURE AND FOOD INDUSTRY
CN109052353B (en) * 2018-08-30 2020-09-01 中国科学院过程工程研究所 System and method for preparing phosphoric acid and silicon-calcium-potassium-magnesium fertilizer from phosphate ore

Also Published As

Publication number Publication date
WO2021154164A1 (en) 2021-08-05

Similar Documents

Publication Publication Date Title
US4707349A (en) Process of preparing a preferred ferric sulfate solution, and product
MA28295A1 (en) METHOD FOR ATTACKING PHOSPHATE ORE
WO2021097539A1 (en) Process and apparatus for producing high purity graphite
FR2440335A1 (en) PYROHYDROLYSIS PROCESS FOR THE TREATMENT OF WASTE AND RESIDUE SUBSTANCES CONTAINING FLUORINE
TN2020000018A1 (en) MANUFACTURE OF EDIBLE DICALCIUM PHOSPHATE BY THE REACTION OF A CONCENTRATED HYDROCHLORIC ACID ON A PULP OF PHOSPHATE ORE
FI61722C (en) FOERFARANDE FOER AOTERVINNING AV NICKEL I FORM AV NICKELNITRATFRAON EN NICKELHALTIG LEGERING
FR2639047A1 (en) PROCESS FOR RECOVERING HUMIC ACIDS
MX2009007059A (en) Manufacture of high-strength, low-salt sodium hypochlorite bleach.
CN111057840B (en) Method for efficiently removing silicon and phosphorus from crude sodium tungstate solution
EP1172331B1 (en) Method for purification of phosphoric acid
KR20180064753A (en) Methods for waste water treatment of Nitrogen trifluoride(NF3) process
WO2024052567A3 (en) Electrolytic method, electrolyzer, electrolysis system, use, and facility
EP1247795B1 (en) Process for the production of 2-ethylhexyl acrylate
CN115010162B (en) Phosphogypsum floating-chemical coupling impurity removal and whitening method
CN1974853A (en) Process of reusing waste iron and steel pickling hydrochloric acid solution and recovering nanometer iron powder and CO
JP4436683B2 (en) Acrolein purification method
CN114478241A (en) Preparation method of arylformyl formic ether
CN111003699A (en) Method for producing feed-grade calcium hydrophosphate and co-producing industrial-grade calcium chloride by hydrochloric acid method
FR2462935A1 (en) PROCESS FOR THE SEPARATION OF SATURATED ALIPHATIC MONOCARBOXYLIC ACID METAL CATALYSTS
US4272343A (en) Process for the electrolytic reductive leaching of ilmenite ore
JP4293424B2 (en) Purification method of sucrose fatty acid ester
JP2021011418A (en) Method of cleaning calcium fluoride sludge
CN108002586A (en) A kind of purifying treatment method of chlorinated exhaust wastewater eluting
EP0316487A1 (en) A process of preparing ferric sulfate solution
IE52009B1 (en) Preparation of chlorinated phenoxyalkanoic acids