| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a washing method and washing apparatus that can remove an iron oxide sticking to an electromagnetic filter while restraining the deterioration and wear of element fiber and can shorten a period required for washing treatment, and to provide a washing liquid used for the method and apparatus. <P>SOLUTION: The method for washing a metallic filter includes a preparation step of preparing the washing liquid 16 by dissolving a rust removing agent containing, as a main component, one or more compounds that have reducing property to the iron oxide and can form a complex with iron, and prepared to have pH of 5.0 or more and 8.0 or less, and also a reducing agent and a corrosion inhibitor in water so that the compound is 3 mass% or more and 10 mass% or less, that the reducing agent is 5 mass% or more and 15 mass% or less to the compound and that the corrosion inhibitor is 5 mass% or more and 15 mass% or less to the compound, and a washing step of dipping an object to be washed into the washing liquid 16 to perform washing treatment. <P>COPYRIGHT: (C)2013,JPO&INPIT |
