The Estimation of Strength and Fracture of Metallurgical Coke by Thermal Shock

Abstract

A fracture mechanism due to thermal stress of metallurgical coke in a blast furnace is investigated by nonlinear transient finite element analysis of heat transfer and thermal stress, as follows;
(1) Thermal stress distribution in a coke disk heated locally by Joule's method.
(2) Effect of initial temperature, thermal expansivity and diameter of coke on thermal stress distribution in a coke sphere.
The strength of coke during rapid heating at high temperature can be estimated. The possibility of thermal schock fracture is deduced to occur in a lower part of a blast furnace.