Carbon element flow analysis and CO2 emission reduction in iron and steel works

Energy in a steel re-rolling mill is mainly consumed in furnaces. Therefore, furnace performance is very important and its contribution in the cost of product is very high. Data has been collected for two different furnaces in Stackle mill and analyzed for performance of furnace. In this paper, effect of furnace performance on secondary steel sector is analyzed. These data about performance is collected on Walking beam furnace in Stackle mill and Re-heating furnace,

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“…Then it is taken to secondary steel sections for Re-shaping to desired format of product. It is known as steel re-rolling mill [3].…”

Section: Process Flow and Equipment Descriptionmentioning

confidence: 99%

Secondary steel mill furnace performance.

Gupta¹,

Bansal²,

N.Sriniwas³

2018

IJET

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“…Uribe‐Soto et al claimed that the steel industry is the main generator of CO 2 among the different industrial sectors, and the thermal use and the recovery of valuable compounds of the byproduct gases may be conducted to improve the energy efficiency of the steelmaking process with subsequent reduction of CO 2 emissions. BOF gas is one of the important byproduct energies in the steelmaking process, which has nearly 34% of the abandoning rate in China's steel companies.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Abandoned Basic Oxygen Furnace Gas Blowing on the Softening–Melting–Dripping Performance of Full High Cr‐Bearing Vanadia–Titania Magnetite Pellets

Song

Zhang

Cheng

et al. 2019

steel research int.

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It is inevitable to encounter increase in slag thickness, foaming slag, and high iron loss due to excessive formation of titanium carbonitride in blast furnace smelting of full high Cr‐bearing vanadia–titania magnetite (HCVTM). The effects of softening–smelting–dripping properties, the content variation of titanium carbonitride, and mineral element migration process of full HCVTM pellets with abandoned BOF gas (ABOFG) blowing are studied using X‐ray diffraction (XRD), X‐ray fluorescent (XRF), inductively coupled plasma‐atomic emission spectroscopy (ICP‐AES), X‐ray photoelectron spectroscopy (XPS), electron probe microanalysis‐wavelength‐dispersive spectrometer (EPMA‐WDS), and scanning electron microscope‐energy dispersive spectroscopy (SEM‐EDS). ABOFG is a type of neglected byproduct gas resource produced in the steelmaking process with high physical and chemical thermal energies and contains 20–40% CO, 20–30% CO2, 2–5% O2, and 30–50% N2. As the concentration of CO2 in ABOFG increases, the position and height of the cohesive zone decline, and the concentration of titanium carbonitride decreases from 1.424% to 1.035%, which are beneficial to the BF smelting process. In addition, the migration processes of Ti, V, and Cr are also affected, especially Ti tends to enrich in the dripped slag, whereas V and Cr tend to concentrate at the dripped iron.

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“…In the current context of strict global resources and environmental protection policies, the steel industry characterized by high energy consumption and high pollution is facing greater environmental pressure. At present, the main energy-saving and emission-reduction technologies in the steel industry have reached the theoretical limit of emission reduction [3]. In the past ten years, many countries in the world have begun to develop breakthrough low-carbon steelmaking technologies that can significantly reduce CO 2 emissions.…”

Section: Introductionmentioning

confidence: 99%

Progress and Future of Breakthrough Low-carbon Steelmaking Technology (ULCOS) of EU

Junjie¹

2018

IJMPEM

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The CO 2 emitted by iron and steel industry accounts for 6% of the global anthropogenic CO 2 emission. As the control of CO 2 emission becomes increasingly stringent all over the world, the iron and steel industry now is facing an unprecedented crisis. And now even the most advanced technologies for reducing carbon emission have reached the bottleneck, so many countries in the world are striving to develop the breakthrough technologies for significantly reducing the carbon emission. The current progress and future research of steelmaking program with ultra-low CO 2 emission in Europe are stated, among which TGR-BF, HIsarna, ULCORED, ULCOWIN and ULCOLYSIS are considered to be the most promising technologies. Combined with the technology of carbon capture and storage, CO 2 emission can be reduced by as much as 80%. Compared with the traditional technologies, investment cost and operating cost are much lower.

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Carbon element flow analysis and CO2 emission reduction in iron and steel works

Cited by 79 publications

References 44 publications

Secondary steel mill furnace performance.

Secondary steel mill furnace performance.

The Effect of Abandoned Basic Oxygen Furnace Gas Blowing on the Softening–Melting–Dripping Performance of Full High Cr‐Bearing Vanadia–Titania Magnetite Pellets

Progress and Future of Breakthrough Low-carbon Steelmaking Technology (ULCOS) of EU

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