8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

HBIS GROUP Serbia Iron & Steel is integral Steel plant owned by the HBIS Group that in its composition has 2 Blast furnaces and 3 lines for sinter production. Usual ore burden of the blast furnace is: 35%sinter+62%pellets+3%B-scrap. During January and February 2016, test periods were performed at the Blast Furnace 1, where the ratio of the sinter was gradually reduced to final excluding. Each of these periods wasn’t lasting for less then 4-5 days. During all test periods, furnace has not any production issues and productivity was improved. Goal of each test periods was to determine and compare technology and economy parameters of the Blast Furnace operation. Usage of 100% pellets in the BF ore burden is not usual practice in Europe. This test period is conducted from 20 to 31 January 2016. During the test period were monitored main technical parameters: slag volume and slag basicity, %Fe in the ore burden, usage of fluxes (limestone, quarcite and dolomite), furnace efficiency (EtaCO), total fuel consumption, thermal condition of the blast furnace, cooling system, temperature of BF gases. During this test period, thermal condition of Blast Furnace was normal, without cooling system elements heat overloading. Consumption of fuel was usual or lower. Aimed amount of slag, and basicity was achieved by the usage of fluxes. BF gas utilization was excellent. There were no any irregularities in the Blast Furnace operation. With this is confirmed that Blast Furnace can operate by using 100 % pellets in the burden. During the test period the production cost of the hot metal would be more favorable compared to usual ore burden.