Production method for decomposing phosphorite by using unconventional nitric acid, and application of product

The invention belongs to the technical field of preparation of fertilizers by decomposing phosphorite, and particularly relates to a production method for decomposing phosphorite by using unconventional nitric acid, and application of a product. According to the production method for decomposing phosphorite by using unconventional nitric acid, a series of technical innovation and integration of acidolysis, separation of acid-insoluble substances, neutralization and concentration, decalcification, gypsum powder production and other processes are carried out to successfully develop a new process for decomposing phosphorite by using nitric acid. According to the method, phosphorite resources and water resources are comprehensively utilized at the same time, the energy consumption is low, and organic and inorganic compound fertilizers and high-added-value gypsum are byproducts while the high-quality nitro fertilizer is produced. 本发明属于磷矿分解制备肥料技术领域，具体涉及非常规硝酸分解磷矿生产方法及其应用。本发明提供一种非常规硝酸分解磷矿生产方法，本发明对酸解、酸不溶物分离、中和浓缩、脱钙、石膏