PRETREATMENT SYSTEM

• Main Authors: KAMEI KAZUKI, MATSUSHIMA KOMEI, SHIBAYAMA TERU
• Format: Patent
• Language: English; Japanese
• Published: 28.06.2022
• Subjects: DISPOSAL OF SOLID WASTE; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; SEPARATING SOLIDS FROM SOLIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

To provide a technique for separation and recovery of iron from an incineration ash to reduce iron concentration in an ash molten raw material and also improving quality of iron powder to be recovered.SOLUTION: A pretreatment system for treating an incineration ash before ash melting comprises: a pulley type magnetic separator for magnetic force screening of a magnetic matter from the incineration ash; a rod mill for breaking a magnetic matter having been through magnetic force screening by the pulley type magnetic separator; and a drum type magnetic separator for magnetic force screening of a ferromagnetic matter of 500 Gauss or over from a broken matter having been broken by the rod mill.SELECTED DRAWING: Figure 1 【課題】焼却灰から鉄を分離回収して灰溶融原料における鉄の濃度を低下させるとともに、回収する鉄粉の品位を向上可能な技術を提供する。【解決手段】焼却灰を灰溶融する前に処理する前処理システムは、焼却灰から磁性物を磁力選別するプーリー式磁選機と、プーリー式磁選機によって磁力選別された磁性物を破砕するロッドミルと、ロッドミルによって破砕された破砕物から５００ガウス以上の強磁性物を磁力選別するドラム式磁選機と、を備える。【選択図】図１