GB/T 6730.11-2007 The EDTA Titrimetric method is used to determine the aluminum content in iron ore, which is suitable for all kinds of iron ores. The aluminum content is determined by titration using the characteristics of EDTA complexation reaction with aluminum ions. The standard specifies the required instruments such as Burette, etc., and clarifies the selection and preparation method of reagents. Detail the processing steps of iron ore samples, including the dissolve of the ore, the separation of interfering elements, etc. Standardize the operation points in the titration process, such as titration speed, indicator use and end point judgment. According to this standard, the aluminum content of iron ore can be accurately determined, providing important data support for iron ore mass assessment and iron and steel smelting process.