HWAHAK KONGHAK HWAHAK KONGHAK, Vol.7, No.4, December, 1969 Entire volume, number list ISSN: 0304-128X (Print) In this Issue (5 articles) 186 - 190 Adsorption Dynamics of Binary System (Purge Step)Adsorption Dynamics of Binary System(purge step)안영옥 191 - 196 기·액·고계 충진유동층의 Gas Hold-up과 압력손실에 관하여Gas Hold-up and Pressure Drop in the Gas Fluidized Liquid-Solid Packed Bed이봉모, 박광윤 197 - 201 시차열분석 및 탄산염의 Kinetic ParameterDTA and Kinetic Parameters of Carbonates유영홍, 전해수 202 - 213 단일포말부유선별에 있어서 기포의 크기가 선별능에 미치는 영향Effect of Equivalent Bubble Size on the Flotability in the Single Bubble Froth Flotation이승무, 최원욱 214 - 220 On the Operation of a Continuous Granulation Plant Manufacturing of Fertilizer GranulesHan CD