Phosphorus ore all-resource utilization production method preparing feed calcium hydrophosphate with hydrochloric acid

• Main Author: Gong Jiazhu
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2016
• Subjects: AMMONIA; CHEMISTRY; COMPOUNDS THEREOF; CYANOGEN; FERTILISERS; FODDER; FOODS OR FOODSTUFFS; HUMAN NECESSITIES; INORGANIC CHEMISTRY; MANUFACTURE THEREOF; METALLURGY; NITROGENOUS FERTILISERS; NON-METALLIC ELEMENTS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES

The invention discloses a phosphorus ore all-resource utilization production method preparing feed calcium hydrophosphate with hydrochloric acid. According to the method, phosphorus ore is decomposed with hydrochloric acid, acid non-soluble substances in the phosphorus ore are used as a silicon resource product, the calcium-phosphorus ratio and the calcium-fluorine ratio of a solution are then adjusted, ammonia is directly used for neutralization and precipitation reactions, precise defluorination is realized in the form of calcium fluoride precipitation, and a fluorine resource product is obtained after enrichment and separation; ammonia is continuously used for precipitating feed calcium hydrophosphate, a phosphorus resource product is separated, a calcium resource in the phosphorus ore completely come into the feed calcium hydrophosphate product, and a calcium carbonate by-product which is subjected to precipitation separation performed by ammoniac carbonate is not specially required and added for removing