PE20141467A1 - PROCEDURE FOR THE PRODUCTION OF DIHYDRATED / HEMIHYDRATED PHOSPHORIC ACID - Google Patents
PROCEDURE FOR THE PRODUCTION OF DIHYDRATED / HEMIHYDRATED PHOSPHORIC ACIDInfo
- Publication number
- PE20141467A1 PE20141467A1 PE2013002731A PE2013002731A PE20141467A1 PE 20141467 A1 PE20141467 A1 PE 20141467A1 PE 2013002731 A PE2013002731 A PE 2013002731A PE 2013002731 A PE2013002731 A PE 2013002731A PE 20141467 A1 PE20141467 A1 PE 20141467A1
- Authority
- PE
- Peru
- Prior art keywords
- weight
- content
- phosphoric acid
- broth
- calcium sulphate
- Prior art date
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title abstract 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract 6
- 235000011132 calcium sulphate Nutrition 0.000 abstract 3
- 239000001175 calcium sulphate Substances 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000008346 aqueous phase Substances 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 2
- 239000011707 mineral Substances 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- KZGQGOXKCBISME-UHFFFAOYSA-J dicalcium;disulfate Chemical compound [Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KZGQGOXKCBISME-UHFFFAOYSA-J 0.000 abstract 1
- 239000012065 filter cake Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000007928 solubilization Effects 0.000 abstract 1
- 238000005063 solubilization Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
SE REFIERE A UN PROCEDIMIENTO DE PRODUCCION DE ACIDO FOSFORICO, QUE CONSISTE EN: A) EL ATAQUE DEL MINERAL FOSFATADO CON ACIDO SULFURICO EN MEDIO ACUOSO A UNA TEMPERATURA ENTRE 70 Y 90�C, CON FORMACION DE UN PRIMER CALDO DE CRISTALES DE SULFATO CALCICO DIHIDRATADO EN SUSPENSION EN LA FASE ACUOSA ACIDA, LA CUAL TIENE UN CONTENIDO DE P2O5 LIBRE DE 38 A 50% EN PESO Y UN CONTENIDO DE SO3 LIBRE INFERIOR AL 0,5 % Y SUPERIOR AL 0.05% EN PESO; B) LA CONVERSION DE ESTE PRIMER CALDO POR CALENTAMIENTO A UNA TEMPERATURA SUPERIOR A 90�C, CON SOLUBILIZACION DE LOS CRISTALES DE SULFATO CALCICO DIHIDRATADO Y RECRISTALIZACION DEL SULFATO CALCICO SOLUBILIZADO, QUE DA LUGAR A UN SEGUNDO CALDO FORMADO POR CRISTALES DE CALCIO HEMIHIDRATADO EN SUSPENSION EN LA FASE ACUOSA QUE CONTIENE EL ACIDO FOSFORICO; Y C) LA SEPARACION DEL SEGUNDO CALDO EN UN ACIDO FOSFORICO DE PRODUCCION, CON UN CONTENIDO DE SO3 LIBRE INFERIOR AL 2% Y SUPERIOR AL 0.05% EN PESO, Y UNA TORTA DE FILTRO QUE CONTIENE EL SULFATO CALCICO HEMIHIDRATADO. ADEMAS DURANTE EL ATAQUE SE ADICIONA UNA FUENTE DE FLUOR AL PRIMER CALDO, QUE TENGA UN CONTENIDO DE F DE 1% A 5% EN PESO, PORCENTAJE REFERIDO AL PESO DEL P2O5 CONTENIDO EN EL MINERAL FOSFATADOIT REFERS TO A PHOSPHORIC ACID PRODUCTION PROCEDURE, WHICH CONSISTS OF: A) THE ATTACK OF THE PHOSPHATED MINERAL WITH SULFURIC ACID IN AN AQUEOUS MEDIUM AT A TEMPERATURE BETWEEN 70 AND 90 ° C, WITH THE FORMATION OF A FIRST BROTH OF CALCIUM DIHIDRATE CRYSTALS IN SUSPENSION IN THE ACID AQUEOUS PHASE, WHICH HAS A FREE P2O5 CONTENT OF 38 TO 50% BY WEIGHT AND A FREE SO3 CONTENT LESS THAN 0.5% AND HIGHER THAN 0.05% BY WEIGHT; B) THE CONVERSION OF THIS FIRST BROTH BY HEATING TO A TEMPERATURE GREATER THAN 90�C, WITH SOLUBILIZATION OF THE DIHYDRATED CALCIUM SULPHATE CRYSTALS AND RECRYSTALLIZATION OF THE SOLUBILIZED CALCIUM SULPHATE, WHICH GIVES RISE TO A SECOND CALCIUM CALCIUM SULPHATE FORMED BY SUSPENDED CRISTALS IN THE AQUEOUS PHASE CONTAINING PHOSPHORIC ACID; AND C) THE SEPARATION OF THE SECOND BROTH INTO A PRODUCTION PHOSPHORIC ACID, WITH A FREE SO3 CONTENT OF LESS THAN 2% AND HIGHER THAN 0.05% BY WEIGHT, AND A FILTER CAKE CONTAINING THE HEMIHYDRATED CALCIUM SULPHATE. ALSO DURING THE ATTACK, A FLUOR SOURCE IS ADDED TO THE FIRST BROTH, WHICH HAS A CONTENT OF F OF 1% TO 5% BY WEIGHT, PERCENTAGE REFERRED TO THE WEIGHT OF THE P2O5 CONTENT IN THE PHOSPHATED MINERAL
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PE2013002731A PE20141467A1 (en) | 2011-06-01 | 2011-06-01 | PROCEDURE FOR THE PRODUCTION OF DIHYDRATED / HEMIHYDRATED PHOSPHORIC ACID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PE2013002731A PE20141467A1 (en) | 2011-06-01 | 2011-06-01 | PROCEDURE FOR THE PRODUCTION OF DIHYDRATED / HEMIHYDRATED PHOSPHORIC ACID |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PE20141467A1 true PE20141467A1 (en) | 2014-10-23 |
Family
ID=51846415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PE2013002731A PE20141467A1 (en) | 2011-06-01 | 2011-06-01 | PROCEDURE FOR THE PRODUCTION OF DIHYDRATED / HEMIHYDRATED PHOSPHORIC ACID |
Country Status (1)
| Country | Link |
|---|---|
| PE (1) | PE20141467A1 (en) |
-
2011
- 2011-06-01 PE PE2013002731A patent/PE20141467A1/en active IP Right Grant
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Grant, registration |