In many industrial production, material processing, and daily scenarios, the presence of iron impurities often causes numerous problems. These iron impurities may originate from the raw materials themselves or may be introduced during the production process. They not only affect the quality and performance of products, but also may cause damage to production equipment. Therefore, it is particularly important to effectively remove iron impurities. In the field of industrial production, such as the chemical industry, iron impurities may catalyze certain unnecessary chemical reactions, leading to a decrease in product purity and affecting the quality and stability of products. In the manufacture of electronic materials, even extremely small iron impurities may affect the performance and reliability of electronic components, thereby affecting the quality of the entire electronic product. In the food processing industry, the presence of iron impurities not only violates food safety standards but also may affect the taste and color of food. To remove iron impurities, people have developed a variety of effective methods. Among them, magnetic separation is a widely used and highly efficient method. It uses the magnetic attraction of iron materials to separate materials containing iron impurities from other materials by passing them through a magnetic field area, where the iron impurities are adsorbed onto the magnet. This method is simple to operate, has low cost, and can select different intensities of magnetic fields and different types of magnetic separation equipment according to different needs, making it suitable for production of various scales. For some special materials or cases where the removal of iron impurities is highly demanding, chemical methods can also be used. By reacting with iron impurities using specific chemical reagents, they can be converted into soluble or precipitated substances, and then separated from the materials by filtration, precipitation, and other operations. However, chemical methods require strict control of reaction conditions and the amount of reagents used to avoid causing other adverse effects on the materials. In addition, strengthening management and monitoring during the production process and reducing the introduction of iron impurities at the source are also very crucial. For example, conducting strict inspections and screening of raw materials and regularly maintaining and cleaning production equipment to prevent equipment wear and tear from generating iron impurities. Removing iron impurities is an important link in ensuring product quality, improving production efficiency, and extending equipment lifespan. Whether using physical magnetic separation methods or chemical processing methods, it is necessary to choose appropriate methods according to specific circumstances and continuously optimize and improve them to achieve more efficient and accurate removal of iron impurities, providing strong support for the development of various industries.