Test method, regulation and control method and separation device for iron phosphide content in lithium iron phosphate positive electrode material

The embodiment of the invention provides a method for testing the content of iron phosphide in a lithium iron phosphate positive electrode material, a regulation and control method and a separation device. According to the embodiment of the invention, the content of iron phosphide in the lithium iron phosphate positive electrode material is tested by utilizing a volumetric method, the problem that the content of iron phosphide in the lithium iron phosphate positive electrode material cannot be accurately tested in the industry is solved, data support is provided for research, development, production and supplied material detection, and the method is a convenient, rapid and accurate test method; an iron phosphide content adjusting technical support can be provided for production and manufacturing of the lithium iron phosphate positive electrode material, and feasibility is provided for production, research, development and exploration of different iron phosphide proportions in the lithium iron phosphate positi