PREPARATION METHOD AND DEVICE OF OBJECT TO BE PROCESSED, AND PROCESSING METHOD AND DEVICE OF PARTICULATE MATTER

To provide a processing method of particulate matter which can be performed at a low cost with a simple operation without producing excessive waste.SOLUTION: A processing method of particulate matters includes an agent adding process (step S1-a) of causing an agent to include an aqueous solution which contains divalent iron ions and trivalent iron ions and adding the agent to the particulate matters, a mixing process (step S1-b) of mixing the agent and the particulate matters and a heating process (step S1-c) of heating a mixture of the particulate matters and the agent, and further includes a process (step S1) of preparing/adsorbing a ferromagnetic body consisting essentially of a magnetite onto a surface of the particulate matters and a classification process (step S2) of classifying the particulate matters which prepare and adsorb the ferromagnetic body consisting essentially of the magnetite onto the surface thereof according to magnetic screening.SELECTED DRAWING: Figure 1 【課題】余分な廃棄物を発生させることなく簡単な操作で安価に実施可能な粉粒体の処理方法を提供する。【解決手段】粉粒体の処理方法であって、薬剤が２価の鉄イオンと３価の鉄イオンとを含有する水溶液を含み、粉粒体に薬剤を添加する薬剤添加工程（ステップＳ１−ａ）と、薬剤と粉粒体とを混合する混合工程（ステップＳ１−ｂ）と、粉粒体と薬剤との混合物を加熱する加熱工程（ステップＳ１−ｃ）と、を含み、粉粒体の表面にマグネタイトを主成分とする強磁性体を生成・吸着させる工程（ステップＳ１）と、表面にマグネタイトを主成分とする強磁性体が生成・吸着した粉粒体を磁力選別により分級する分級工程（ステップＳ２）を含む。【選択図】図１