The Study of the Influence of the Grain-Size Composition of Anthracite on the Agglomerating Index and the Development of Technological Recommendations for the Preparation of Fuel for Sintering for the CherMK Conditions

Abstract

As part of the technology fine-tuning for using anthracite in sintering, Minitab 18 program was used for planning and analysis of the experiment. The deliverables of the two-level factorial experiment (2k or Design Of Experiments) were used to adjust the technology for fuel preparation in sinter production at sinter plant.

Coke Substitution with Anthracite in Sintering Production

“…The choice of fuel for the sintering charge is of significant importance, as it supplies the necessary heat for both the physical and chemical processes and contributes to the formation of sinters with desired properties. Approximately 65% of the iron ore enters the blast furnace in the form of sinter, while around 30% is in the form of pellets [21]. In the Czech Republic, the fuel used for the sintering process includes coke breeze and anthracite.…”

Review on alternative fuel application in iron ore sintering

“…Kuchin et al [22] made an attempt to study the influence of the grain-size composition of anthracite on the agglomerating index for the preparation of fuel for sintering. Even though the actual effect of grain-size composition of anthracite was not experimentally proven in their study, reference was made to other studies carried out in Japan, Germany and Russia [22].…”

“…Kuchin et al [22] made an attempt to study the influence of the grain-size composition of anthracite on the agglomerating index for the preparation of fuel for sintering. Even though the actual effect of grain-size composition of anthracite was not experimentally proven in their study, reference was made to other studies carried out in Japan, Germany and Russia [22]. It was reported by the Japanese researchers that replacing coke with anthracite should only be carried out when the coke to be replaced is of small size since the adoption shifts the optimal size of the solid fuel to the smaller side.…”

“…It was reported by the Japanese researchers that replacing coke with anthracite should only be carried out when the coke to be replaced is of small size since the adoption shifts the optimal size of the solid fuel to the smaller side. Moreover, an insignificant efficiency of the anthracite would be realized when the anthracite is over-ground, and this could influence the combustion time [22]. It was identified that the assertion made by the Japanese researchers was different from that of the Germans since the latter proposed the use of a desirable fraction of anthracite to replace a certain proportion of coke breeze.…”

“…It was identified that the assertion made by the Japanese researchers was different from that of the Germans since the latter proposed the use of a desirable fraction of anthracite to replace a certain proportion of coke breeze. According to the German researchers, Kuchin et al [22], adoption of their technique results in a positive productivity with anthracite, but a poor strength of the sinter is also realized. Their proposition was in an attempt to preserve the speed of heat transfer and speed equality of the burning front movement.…”