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NEW DEFLUORINATION TECHNOLOGY OF WET PROCESS PHOSPHORIC ACID.

Junmin Wang

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Abstract

Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.The influences of concentration of extractant,concentration of sulphuric acid as acidic agent and extraction temperature on the defluorination efficincy were investigated.The results of experiment indicate that the higher efficiency of defluorination can be obtained under the following conditions:paraffin amine concentration 15%,sulphuric acid concentration 50%～75% and extraction temperature 40～60 ℃.

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Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.The influences of concentration of extractant,concentration of sulphuric acid as acidic agent and extraction temperature on the defluorination efficincy were investigated.The results of experiment indicate that the higher efficiency of defluorination can be obtained under the following conditions:paraffin amine concentration 15%,sulphuric acid concentration 50%～75% and extraction temperature 40～60 ℃.

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Available abstract

Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.The influences of concentration of extractant,concentration of sulphuric acid as acidic agent and extraction temperature on the defluorination efficincy were investigated.The results of experiment indicate that the higher efficiency of defluorination can be obtained under the following conditions:paraffin amine concentration 15%,sulphuric acid concentration 50%～75% and extraction temperature 40～60 ℃.

Key concepts: Diluent, Phosphoric acid, Extraction (chemistry), Chemistry, Kerosene, Amine gas treating, Solvent, Solvent extraction

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