Multistage silicon removal and purification device and method for fine iron powder

• Main Authors: SHI JUNLING, WANG GUANQUN, HU XUYONG, CHENG ZHIYUAN, NIU HUIJIE, QIAN CHENG
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2024
• Subjects: CHEMISTRY; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; FERROUS OR NON-FERROUS ALLOYS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; METALLURGY; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a multistage silicon removal and purification device and method for fine iron powder, and the multistage silicon removal and purification device comprises a ball-milling magnetic separation device, a flotation box, a flotation liquid storage box, a pickling tank, an acid liquid storage box, an alkali washing tank, an alkali liquid storage box and a control box, and one side of the bottom of the ball-milling magnetic separation device is connected with the flotation box through a fifth feeding pipe; according to the device, silicon ore in the fine iron powder is removed in the modes of ball milling, magnetic separation, flotation, acid pickling and alkali washing, magnetic separation is first-stage treatment, flotation is second-stage treatment, acid pickling is third-stage treatment, alkali washing is fourth-stage treatment, the quality of silicon removal is improved, the silicon content in the fine iron powder is almost zero, the purity of the fine iron powder is improved, the overall