Method for diagnosing rare earth elements in phosphate ore

The invention relates to a method for diagnosing rare earth elements in phosphate ore. The method comprises: step one, decomposing and measuring carbonate; to be specific, adding an acetic acid solution into a phosphate ore material, carrying out water bath processing and leaching, and measuring rare earth, phosphorus and silicon contents from filter liquor A; step two, decomposing and measuringphosphate; to be specific, adding any one of a nitric acid solution and a sulfuric acid solution into a residue A, carrying out leaching and filtering, and measuring rare earth, magnesium and siliconcontents from filter liquor B; and step three, decomposing and measuring silicate; to be specific, carrying out ashing on a residue B, carrying out dissolving completely by using one of a nitric acidsolution, a hydrofluoric acid solution, and a sulfuric acid solution, and measuring rare earth, phosphorus and magnesium contents from filter liquor C. Therefore, the existence of rare earth elementsin phosphate ore can be inves