Method for preparing feedstuff grade of defluorination tricalcium phosphate by two times of agglomeration
A process for preparing feed-class defluorinated tricalcium phosplate by sintering twice includes such steps as sintering the high-F phosphorus ore at 1280-1350 deg.c in rotary kiln using water gas as fuel, grinding, proportionally mixing it with sodium carbonate (or sulfate) and lime stone powder,...
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| Sprache: | eng |
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| Zusammenfassung: | A process for preparing feed-class defluorinated tricalcium phosplate by sintering twice includes such steps as sintering the high-F phosphorus ore at 1280-1350 deg.c in rotary kiln using water gas as fuel, grinding, proportionally mixing it with sodium carbonate (or sulfate) and lime stone powder, adding hot phosphonic acid, granulating, sintering at 1460-1530 deg.C, and grinding. Advantages: qualified product greater than 98%, less production cost. |
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