Method for rapidly determining content of multiple elements in ferromanganese

The invention discloses a method for rapidly determining the content of multiple elements in ferromanganese, which comprises the following steps: firstly, selecting 3-5 ferromanganese standard substances with known contents of silicon, manganese and phosphorus elements to form a concentration gradient, and crushing a sample with unknown content and the selected ferromanganese standard substances into particles with the particle size of less than 40 meshes; dissolving the sample ferromanganese with unknown content and the selected ferromanganese standard substance in the solution; carrying out data acquisition on the emission spectrum light intensity of silicon, manganese and phosphorus elements of the ferromanganese standard substance, drawing a standard working curve of each element according to the corresponding relationship between the element content and the emission spectrum light intensity, and substituting the emission spectrum light intensity of the silicon, manganese and phosphorus elements of a samp