RESEARCH ON HIGH TEMPERATURE PROPERTIES OF IRON ORE MATERIALS

Abstract

The paper deals with reducibility of metallurgical pellets. They were tested by ISO 4695:2007 to determine their reducibility in CO environment at 950°C and ISO 4696-2:2007 to determine their disintegration index after reduction at 550°C. The paper presents the results of reduction process. It compares them with reducibility of other material such as iron ore and sinter. The paper interprets the effect of reduction on phase composition of pellets and the content of bounded water. The thermoplastic properties present physic-chemical changes of feedstock during its descent in the shaft of blast furnace aggregate. The mechanical solidity characterizes the capability of material to be resistant against the pressure, the crash, the fall and the abrasion.