|About this Abstract
||Materials Science & Technology 2011
||Analysis of Drying Process for Castable Refractories
||Satoru Shimizu, Koji Yamaguchi, Yoshisato Kiyota, Hisahiro Matsunaga
|On-Site Speaker (Planned)
An understanding of the internal state (pressure change, temperature change) of castables during drying is important for avoiding the danger of explosive spalling and establishing a safe drying process. Various reports on drying of castables have been published to date, and several drying models have been proposed. However, no model considers changes in the physical properties of castables during drying. In this research, an analytical model incorporating temperature-dependent change in air permeability was constructed, and the relationship with internally-generated pressure, which is the root cause of explosive spalling, was investigated. The fact that internally-generated pressure is easily affected by 1) air permeability and 2) heating rate was confirmed using the analytical model. Furthermore, the conditions for avoiding explosive spalling were studied based on the tensile strength of the material, and conditions under which internally-generated pressure does not exceed tensile strength were analyzed.
||Definite: A CD-only volume