A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VERFAHREN ZUR HERSTELLUNG VON PHOSPHORSÄURE UND KLINKERPROZESS-GEEIGNETER KALZIUMSULFATQUALITÄT ZUR KOMMERZIELLEN UND INDUSTRIELLEN VERWERTUNG VON KALZIUMSULFAT
A process may involve digesting raw phosphate with concentrated sulfuric acid and converting the raw phosphate to calcium sulfate in the form of dihydrate and/or hemihydrate, and phosphoric acid, separating off calcium sulfate as solid from a liquid phase of a suspension that is obtained, treating the calcium sulfate that is separated off or from a stockpile with an acid to give a suspension with purified calcium sulfate and P2O5-containing acid solution, separating off the purified calcium sulfate as solid from a liquid phase of a suspension obtained, using the P2O5-containing liquid phase as a portion of the sulfuric acid required for digesting the raw phosphate or as feedstock for treating phosphogypsum from the stockpile to give a suspension of purified calcium sulfate and P2O5-containing acid solution, which is thereafter processed.
VERFAHREN ZUR HERSTELLUNG VON PHOSPHORSÄURE UND KLINKERPROZESS-GEEIGNETER KALZIUMSULFATQUALITÄT ZUR KOMMERZIELLEN UND INDUSTRIELLEN VERWERTUNG VON KALZIUMSULFAT
A process may involve digesting raw phosphate with concentrated sulfuric acid and converting the raw phosphate to calcium sulfate in the form of dihydrate and/or hemihydrate, and phosphoric acid, separating off calcium sulfate as solid from a liquid phase of a suspension that is obtained, treating the calcium sulfate that is separated off or from a stockpile with an acid to give a suspension with purified calcium sulfate and P2O5-containing acid solution, separating off the purified calcium sulfate as solid from a liquid phase of a suspension obtained, using the P2O5-containing liquid phase as a portion of the sulfuric acid required for digesting the raw phosphate or as feedstock for treating phosphogypsum from the stockpile to give a suspension of purified calcium sulfate and P2O5-containing acid solution, which is thereafter processed.
VERFAHREN ZUR HERSTELLUNG VON PHOSPHORSÄURE UND KLINKERPROZESS-GEEIGNETER KALZIUMSULFATQUALITÄT ZUR KOMMERZIELLEN UND INDUSTRIELLEN VERWERTUNG VON KALZIUMSULFAT
METHOD FOR PRODUCING PHOSPHORIC ACID AND CALCIUM SULPHATE QUALITY SUITABLE FOR A CLINKER PROCESS FOR THE COMMERCIAL AND INDUSTRIAL UTILISATION OF CALCIUM SULPHATE
PROCÉDÉ DE PRODUCTION D'ACIDE PHOSPHORIQUE ET DE SULFATE DE CALCIUM DE QUALITÉ APPROPRIÉE POUR UN PROCÉDÉ DE CLINKER EN VUE D'UNE UTILISATION COMMERCIALE ET INDUSTRIELLE DE SULFATE DE CALCIUM
STOCKHOFF PETER (author) / HELMLE STEFAN (author) / RIVAS VILLARREAL DEYVI JAVIER (author) / DAHEIM NICOLAI (author)
2022-11-16
Patent
Electronic Resource
German
IPC:
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021