Method for the production of phosphoric acid and/or a salt...

C - Chemistry – Metallurgy – 01 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C01B 25/22 (2006.01) C01B 25/32 (2006.01) C01B 25/46 (2006.01) C05B 11/12 (2006.01)

Patent

CA 2490916

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.

Procédé de production d~acide phosphorique comprenant une attaque de minerai de phosphate par une première solution aqueuse d~acide chlorhydrique, une séparation, dans la liqueur d~attaque, entre une phase solide insoluble contenant des impuretés et une phase aqueuse séparée comportant en solution des ions phosphate, des ions chlorure et des ions calcium, une neutralisation de ladite phase aqueuse séparée de la liqueur par addition d~un composé de calcium pour former avec lesdits ions phosphate un phosphate de calcium insoluble, qui précipite, une séparation, dans ladite phase aqueuse neutralisée, entre une phase aqueuse comportant en solution des ions calcium et des ions chlorure et une phase solide précipitée à base dudit phosphate de calcium insoluble dans l~eau, et une solubilisation d~au moins une partie de ladite phase solide précipitée, séparée, Dans une deuxième solution aqueuse d~acide chlorhydrique, avec formation d~une solution aqueuse contenant des ions phosphate, des ions chlorure et des ions calcium à extraire par un agent d~extraction organique dans une extraction de type liquide-liquide.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for the production of phosphoric acid and/or a salt... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the production of phosphoric acid and/or a salt..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of phosphoric acid and/or a salt... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1397513

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.