Experience with using alternative reducing agents at blast furnace

Buchwalder, J.; Fuchs, Thilo M.; Hunger, Jürgen; Siepert, T.

doi:10.1051/metal:2003177

Cited by 2 publications

(6 citation statements)

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“…At an operating temperature of 80 °C the physical properties of the animal fat, such as density, viscosity and ignition point, are similar to heavy oil. Therefore, by mixing animal fat with heavy, the mixture can be injected without any further preparation (Buchwalder et al, 2003).…”

Section: Different Types Of Solid Recovered Fuelsmentioning

confidence: 99%

Solid recovered fuels in the steel industry

Kepplinger

Tappeiner

2011

Waste Manag Res

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By using waste materials as alternative fuels in metallurgical plants it is possible to minimize the traditionally used reducing agents, such as coke, coal, oil or natural gas. Moreover, by using waste materials in the metallurgical industry it is feasible to recover these materials as far as possible. This also represents another step towards environmental protection because carbon dioxide emissions can be reduced, if the H(2) content of the waste material is greater in comparison with that of the substituted fuel and the effects of global warming can therefore be reduced. In the present article various solid recovered fuels and their applications in the metallurgical industry are detailed.

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Section: Different Types Of Solid Recovered Fuelsmentioning

confidence: 99%

Solid recovered fuels in the steel industry

Kepplinger

Tappeiner

2011

Waste Manag Res

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“…Regarding the theoretical case of the raceway injection of processed SVZ synthesis gas from partial ASR gasification (see Table 2), a relatively high energy loss is to be expected in the raceway due to the high content of H 2 and CH 4 . That means that the decreased reduction coke consumption in the shaft due to the additional reducing potential will partly be compensated by additional coke consumption in the hearth.…”

Section: )mentioning

confidence: 99%

“…As a matter of fact, only high caloric waste materials have been found interesting as a substitute for coke or oil in any significant production scale rate. Such a material is animal fat, which has substituted up to 25 % of the oil injection at EKO Stahl, 4) for example.…”

Section: Injection Of Waste Plasticsmentioning

confidence: 99%

“…The concentrations of contaminants have been found to be extremely low, fulfilling all requirements of the authorities. 1,2) The injection of high caloric plastics into the tuyere zone has been normal BF operational practice since 1995 at Stahlwerke Bremen GmbH, ARCELOR Group, Bremen/ Germany, 1) since 1996 at KEIHIN Works, NKK Corp., Kawasaki/Japan, 3) and since 1997 at EKO Stahl GmbH, ARCELOR Group, Eisenhüttenstadt. 2,4) The injection rate performed with German BFs is in the range of 50-70 kg/thm.…”

Section: Injection Of Waste Plasticsmentioning

confidence: 99%

“…1,2) The injection of high caloric plastics into the tuyere zone has been normal BF operational practice since 1995 at Stahlwerke Bremen GmbH, ARCELOR Group, Bremen/ Germany, 1) since 1996 at KEIHIN Works, NKK Corp., Kawasaki/Japan, 3) and since 1997 at EKO Stahl GmbH, ARCELOR Group, Eisenhüttenstadt. 2,4) The injection rate performed with German BFs is in the range of 50-70 kg/thm. For example, injecting waste plastics simultaneously with heavy oil at EKO Stahl GmbH led to consumption of all reducing agents with 460 kg/thm as an annual average for 2004 ( As an alternative to the injection of oil or pulverized coal, the injection of waste plastics is common operational practice in a number of blast furnaces.…”

Section: Injection Of Waste Plasticsmentioning

confidence: 99%

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