Table of Contents

    • 271

    • ArcelorMittal USA Blast Furnace Gas Flare Capture Project

      This paper details ArcelorMittal Indiana Harbor’s project to convert waste blast furnace gas into electricity, thus lowering energy costs and emissions. A new, 88%-efficient boiler produces 350,000 lbs. of steam per hour, generating enough electricity to power 30,000 homes. The project saves an estimated 4.6 trillion Btu and reduces CO2 emissions by 340,000 tons annually.

    • 276

    • Frustum Hood and Fume Treatment Plant (FTP) at Ovako

      A new fume treatment plant at Ovako’s Smedjebacken plant is equipped with environmentally friendly features, including a heat exchanger for conveying hot water to the nearby community and a quenching tower and carbon injection that maintain dioxin emissions below best available technology limits. Started up in 2013, it has an improved canopy as well as lower electricity consumption.

    • 283

    • Dry Slag Granulation With Energy Recovery: Pilot Campaign at ROGESA

      Paul Wurth and ROGESA entered into an agreement to implement a full-scale dry slag solidification plant in which steel balls and liquid slag are mixed to achieve full vitrification of the blast furnace slag. This paper details the technology, the pilot plant and the results achieved so far.

    • 290

    • Cogeneration With ORC at Elbe-Stahlwerke Feralpi EAF Shop

      In 2012, Elbe-Stahlwerke Feralpi (ESF) installed the world’s first EAF waste heat recovery plant with cogeneration based on organic Rankine cycle (ORC) technology. The background for the investment and the technological choices are explained, along with project milestones, commissioning and first operational results.

    • 301

    • Economic Benefits of Producing DRI to Displace Purchased Scrap in the BOF

      An economical option for a large integrated steelmaker is to produce DRI and use this across their various facilities to displace purchased scrap in the BOF. The cost savings associated with using self-produced DRI are even more pronounced if the steelmaker has access to low-cost iron ore pellets to feed to the DRI plant. A case study is presented as a means to take advantage of natural gas and iron ore resources.