Effect of Test Condition on Decrepitation Index and Test Repeatability for Lump Iron Ore

被引：5

作者：

Aotsuka, Keiichi ^{[1
]}

Kawaguchi, Takazo ^{[2
]}

Nimiya, Yoshikazu ^{[3
]}

机构：

[1] Sumitomo Met Technol Inc, Kashima, Ibaraki 3140014, Japan

[2] Sumitomo Met Ind Ltd, Kamisu, Ibaraki 3140255, Japan

[3] Japan Iron & Steel Federat, Chuo Ku, Tokyo 1030025, Japan

来源：

ISIJ INTERNATIONAL | 2010年 / 50卷 / 10期

关键词：

D O I：

10.2355/isijinternational.50.1511

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A study was conducted on the effect of test method and test condition on measurement value and test repeatability. Tests were conducted in accordance with ISO 8371 as the basic test condition. Three types of heating furnaces were used, muffle furnace, small-type muffle furnace and reduction furnace. Two types of test portion holders were used, box type holder and cylindrical type holder. These heating furnaces and test portion holders were used in two different combinations. The temperature of the test portion was measured in the center of the test portion holder or layers. To determine the DI, the mass ratio of the test portions screened with a mesh size of 4.76mm was used to calculate the DI. The test equipment combination of a muffle furnace and a box holder shows the fastest increase in test portion temperature while the combination of a reduction furnace and a cylindrical holder shows the slowest increase. The experiments above also show that the heating rate changes by furnace specifications, test portion holder and test portion mass.

引用

页码：1511 / 1513

页数：3