1. Low-cement chrome-oxide-free castable for use in ironmaking rotary kilns
- Author
-
Tsweleng, D.
- Subjects
Low-cement castable ,rotary kiln ,chrome (VI) ,titaniferous magnetite ore ,Evraz Highveld Steel & Vanadium Limited ,chrome-oxide free ,submerged arc furnace ,open slag bath furnace - Abstract
In the Evraz Highveld production process, iron ore is prereduced in rotary kilns prior to charging into submerged arc furnaces (SAFs). Owing to the highly aggressive slags that are formed within the combustion zones of these kilns, chrome-oxide-containing low-cement castables have been used for some years in the kiln lining. Due to concerns around the potentially harmful effects should Cr(V1) be present in the spent linings, Highveld and its suppliers of kiln castables devoted time to developing alternative chrome-free lining materials. Such materials needed to be cost-effective and ensure good performance and improved kiln availability. This paper discusses all the parameters surrounding this development.
- Published
- 2013