MICROWAVE DRYING METHOD FOR HONEYCOMB MOLDED BODY

• Main Authors: ASAKURA NORIHIRO, HAYASHI SEIICHIRO, OKUMURA KENSUKE
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2016
• Subjects: BLASTING; DRYING; DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; TRANSPORTING; WEAPONS; WORKING CEMENT, CLAY, OR STONE

PROBLEM TO BE SOLVED: To provide a microwave drying method for a honeycomb molded body which does not cause the shape defect such as cell deformation of the honeycomb molded body by lessening the temperature gradient in the inside of the molded body in dielectric drying due to irradiation of the microwave.SOLUTION: A microwave drying method 1 comprises: an introduction process of arranging a honeycomb molded body so that the axial direction X of a cell 11 becomes vertical and introducing the honeycomb molded body 10 into the inside of a drying furnace capable of radiating with microwave; a reflector arrangement process of using a microwave reflector 20 having a reflection surface of 15-30% of a coverage of the molded body 10 to the area of an edge face, and arranging the reflector at the upper part of the molded body 10; and a microwave drying process of irradiating the upper part of the molded body 10 with the microwave having the frequency of 915 MHz to dry the molded body 10.SELECTED DRAWING: Figure 1 【課題】マイクロ波を照射してハニカム成形体を誘電乾燥させる際の成形体内部の温度勾配を小さくし、ハニカム成形体のセルの変形等の形状不良が生じることのないハニカム成形体のマイクロ波乾燥方法を提供する。【解決手段】マイクロ波乾燥方法１は、セル１１の軸方向Ｘが上下方向となるようにハニカム成形体を配置し、マイクロ波を照射可能な乾燥炉の炉内部にハニカム成形体１０を導入する導入工程と、ハニカム成形体１０の端面の面積に対する被覆率が１５％〜３０％の反射面を備えるマイクロ波反射材２０を用い、ハニカム成形体１０の上部に配置する反射材配置工程と、９１５ＭＨｚの周波数のマイクロ波をハニカム成形体１０の上部から照射し、ハニカム成形体１０を乾燥させるマイクロ波乾燥工程とを有するハニカム成形体のマイクロ波乾燥方法。【選択図】図１