Non-isothermal reduction as a method of determining the softening-melting temperature of iron-ore pellets and sinters

被引：0

作者：

Mróz, J ^{[1
]}

机构：

[1] Czestochowa Tech Univ, Fac Met & Mat Engn, Czestochowa, Poland

来源：

STEEL RESEARCH | 1998年 / 69卷 / 12期

关键词：

D O I：

10.1002/srin.199805581

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An attempt was made to develop a simplified procedure of determining the softening-melting temperature ranges for iron-ore pellets and sinters. For this purpose, the non-isothermal reduction of a sinter (pellet) sample in a graphite crucible was used in the temperature range of 1000-1550 degrees C, where the sample was heated at a rate of 5K/min. The investigations have shown that the Variation of the reduction rate as a function of time and temperature is clearly related to the occurring phenomena of softening and melting of these materials. The existing areas of the maximum and minimum reduction rates correspond to the temperature ranges of softening-melting of the materials. It is also possible to determine the temperature of separation of the metallic phase from the slag phase. The examination of industrial pellets by the non-isothermal reduction method has confirmed the usefulness of this method for the comparative analysis of the thermoplastic properties of iron-ore pellets and sinters, and for predicting their usefulness for the blast furnace process.

引用

页码：465 / 468

页数：4