Modern Teaching and Training in Metallurgical Engineering

Babich, Alexander; Mavrommatis, Konstantinos; Senk, Dieter; Gudenau, Heinrich Wilhelm

doi:10.1002/srin.200405792

Cited by 12 publications

(28 citation statements)

References 2 publications

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“…The blast furnace sludge contains high contents of Fe, C, and O − and major amounts of Si, Al, Ca, Mg, and K. − Besides these elements, the sludge is characterized by the contents of various trace metals of environmental concern, including Zn, Pb, Cd, − , and Hg . Furthermore, Zn and Pb are also relevant for the blast furnace process itself because these elements may damage the lining , or the tuyere refractory , or weaken the strength of tuyere coke (in the case of Zn) …”

Section: Introductionmentioning

confidence: 99%

Characterization of Blast Furnace Sludge with Respect to Heavy Metal Distribution

Trinkel

Mallow

Aschenbrenner

et al. 2016

Ind. Eng. Chem. Res.

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Blast furnace sludge is a heterogeneous material generated by the wet top gas cleaning process. It consists mainly of Fe, O, and C and contains major amounts of Si, Al, and Mg. Besides these elements, the sludge also contains trace metals such as Cd, Zn, and Pb. Reliable information about the total contents and distribution of the elements present in blast furnace sludge is of importance for hot metal production as some of them should preferably be recycled (Fe, C) and others (Cd, Zn, or Pb) are of environmental concern. Hence, the aim of the present study was to investigate the composition of blast furnace sludge with respect to the separation of desirable from undesirable elements. For this purpose, blast furnace sludge samples have been taken and analyzed with regard to particle size distribution (using wet sieving) and their respective contents of Fe, Zn, Pb, Cr, Ni, Cd, and C. The results of the analyses demonstrate that the concentration of the elements investigated significantly depends on the particle size. Coarser particles (>100 μm) are characterized by higher contents of C, whereas fine grained particles (<20 μm) show an enrichment of Fe and a significant accumulation of the heavy metals Zn, Pb, and Cd, which is attributed to their condensation on the particles’ surfaces. The content of Cr and Ni in blast furnace sludge is largely independent of the particle size.

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Section: Introductionmentioning

confidence: 99%

Characterization of Blast Furnace Sludge with Respect to Heavy Metal Distribution

Trinkel

Mallow

Aschenbrenner

et al. 2016

Ind. Eng. Chem. Res.

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“…Mixtures of different dusts, mostly homogeneous mixtures of various coal grades or PC with organic wastes, fluxes, slags, biomass, ore fines, catalysts and other substances can also be injected to intensify coal conversion, to improve gas permeability in the cohesive zone, to produce low silicon hot metal, to optimise slag formation and desulphurisation conditions, to protect the blast furnace hearth refractories and to recycle wastes. 1) Furthermore co-injection of two or sometimes even tree auxiliary reducing agents via separate inlets is practiced at a number of blast furnace targeting at technological and economic benefits like controlling the thermal state of the lower zone, the slag basicity and hot metal quality or the melting rate. Some companies aspire to flexible use of various auxiliary reducing agents including co-injection depending on availability, costs and other factors.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4] While process oxygen is injected via an individual channel, it is also considered as a "co-injectant".…”

Section: Introductionmentioning

confidence: 99%

“…1), were devoted to conversion behaviour of individual auxiliary reducing agents, predominantly PC, in the raceway and its intensification at high injection rates. Significantly fewer investigations were performed on co-injection and most of them are dealing with change in flame temperature, furnace productivity, coke consumption, slag volume, hot metal composition as well as with compensating measures and tuyère design, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Interaction between Co-injected Substances with Pulverized Coal into the Blast Furnace

2014

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Co-injection of two or more reducing agents via tuyères may ensure technological, economic and environmental benefits and enhance the flexibility of use of various reductants. The blast furnace technology with top gas recycling, recently tested in the scope of the ULCOS program aiming at significant mitigation of CO2 emissions, is also based on co-injection of reducing gas, pulverised coal and pure oxygen. This paper presents results of a study on conversion behaviour of pulverised coal while co-injecting further substances with focus on tuyère assembly design. Factors affecting the coal particle conversion in the raceway derived from the combustion mechanism and constructional features of tuyère stock arrangement are firstly discussed. An experimental work was performed using the Multifunctional Injection Rig for Ironmaking (MIRI) at the Department of Ferrous Metallurgy, RWTH Aachen University. Tests simulating different scenarios for injection of coal, carbon monoxide and oxygen were conducted. Conversion degree determined by three methods and microstructural analysis were used to examine the effect of pre-mixing of coal with above mentioned components on its combustion behaviour. Results obtained give hints for optimising the lance arrangement.

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“…The virtual laboratory modules are portable, self-explanatory, and user-friendly. They enable distance education students to have lab experiences similar to those of their peers on campus 11 . They also address the needs of students with motion disability.…”

Section: Introductionmentioning

confidence: 99%

Transforming Undergraduate Engineering Education with 3D Virtual Reality Laboratory

Ari-Gur

Ikonomov

Rabiej

et al.

2013 ASEE Annual Conference &Amp; Exposition Proceedings

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in new Zealand. She has been working on magnetic shape memory alloys as smart materials and for alternative energy. She has years of experience working on a variety of materials. Her research has been funded by NSF, the Air-Force Office of Scientific Research, NASA, CRDF Global, and industry. Her research projects also benefit society such as her NSF grants where nano-ceramics were used as photocatalysts for cleaning contaminants from water and air or for developing ferromagnetic alloys for alternative energy. She has used grants from HP and NSF to develop virtual laboratory to enhance student learning. She is also engaged in a number of outreach activities. A regular presenter in math and science events geared toward females and underrepresented groups of middle and high-school students, Dr. Ari-Gur regularly mentors students from the Kalamazoo Area Math and Science Center. She has strong ties and outreach programs with community colleges and hosts students from HBCUs in her lab.

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Modern Teaching and Training in Metallurgical Engineering

Cited by 12 publications

References 2 publications

Characterization of Blast Furnace Sludge with Respect to Heavy Metal Distribution

Characterization of Blast Furnace Sludge with Respect to Heavy Metal Distribution

Interaction between Co-injected Substances with Pulverized Coal into the Blast Furnace

Transforming Undergraduate Engineering Education with 3D Virtual Reality Laboratory

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