Method for producing pure phosphoric acid

Details Method for producing pure phosphoric acid Method for producing pure phosphoric acid

1978-08-22

1980-06-10

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2522

Patent

active

042073030

ABSTRACT:
A method for producing a pure phosphoric acid from a phosphoric acid obtained through a wet process, in a high purity comparable to that from the dry process phosphoric acid, in a simpler manner, at a cheaper cost and more effectively, is provided, which method resides, in one main aspect, in concentrating a phosphoric acid obtained through the wet process, up to a P.sub.2 O.sub.5 content of 30% by weight or higher; treating the resulting phosphoric acid with diisopropylcarbinol to extract a pure phosphoric acid; and back-extracting the pure phosphoric acid in the resulting extract with water, and also resides, in another main aspect, in subjecting a wet process phosphoric acid, to either a step of partially neutralizing said acid with an alkali, ammonia or a salt thereof, followed by adding a water-soluble low boiling organic solvent to said acid, or a step of adding a water-soluble low boiling organic solvent to said phosphoric acid, followed by partially neutralizing with an alkali or ammonia or a salt thereof; separating the resulting precipitate; after distilling off said solvent, treating the resulting solution with an extracting agent comprising diisopropylcarbinol to extract a phosphoric acid; and back-extracting the resulting solution with water.

Affiliated with

Also associated with

Rating

Method for producing pure phosphoric acid 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 producing pure phosphoric acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing pure phosphoric acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-862758