The effect of direct reduced iron (DRI) addition in metallic charge on the different steel making parameters and consumption figures have been studied. Data obtained from industrial heats carried out in 185-ton electric arc furnace (EAF) were used to study. The present study carried out in a wide range of DRI percentage, 0 - 50% of metallic charge, and the results have been statistically analyzed to correlate the percentage of DRI with the different consumption figures of electric energy, oxygen, coke and fluxing materials. In addition, the influence of DRI percentage on contents of tramp and detrimental elements affecting on steel quality has been also investigated.
The results reveal improving the steel quality by increasing DRI percentage, as the tramp elements (Cu, Sn, Ni, Cr) and detrimental elements (P, S) and also nitrogen, all decrease by increasing the percentage of DRI in the metallic charge. On the other hand, the increase in DRI percentage leads to increase in the consumptions (per ton of liquid steel) of electric energy, oxygen, coke and fluxing materials. Furthermore, the metallic yield decreases and the power on time and hence the tap-to-tap time increase as DRI percentage increases. With using higher DRI percentage in the charge, the yield strength and ultimate tensile strength of produced hot rolled bars of low carbon steel slightly decrease whereas elongation increases.

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BEIJING, March 10, 2015 – The outlook for China’s steel market over the next month rebounded dramatically after the Chinese New Year holiday period on expectations of stronger domestic orders, according to the latest Platts China Steel Sentiment Index (Platts CSSI), which showed a headline reading of 72.2 out of a possible 100 points in March.

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EVRAZ plc (LSE: EVR) announces that its North American subsidiary EVRAZ North America (“ENA”) has signed an agreement with Maruichi Oregon Steel Tube, LLC to sell ENA’s structural tubing business (formerly known as Columbia Structural Steel) in Portland, Ore., for approximately US$51 million in cash, including approximately US$8.5 million of proceeds from the sale of inventories.

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The plant’s hot-dip galvanized production line #2 in its cold rolled shop will work at full capacity. It is planned to produce 16,000 tons of galvanized coils in March. Over 40% of these products will be shipped to the local market directly to buyers in accordance with contracts and to the warehouses of Metinvest-SMC for wholesale and retail customers in all regions of Ukraine. The rest will be sold in the CIS and overseas.

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ThyssenKrupp MillServices & Systems has expanded its portfolio of finishing services and concluded a five-year service contract with Hoesch Hohenlimburg. The company has now taken a new slab slitting and grinding line into production on the site of Hüttenwerke Krupp Mannesmann (HKM) in south Duisburg.

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