Introduction

Meyers, Jeffrey

doi:10.1007/978-1-349-08308-4_1

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…In fact, the partial desiccation results in an unequal distribution of the pore water that primarily holds near grain contacts by capillary forces. 19,39 The curved pore geometries reect the meniscus surface of the water caused by surface tension at the time of precipitation.…”

Section: Petrographic Analysesmentioning

confidence: 99%

A multianalytical X-ray based micro-spectroscopic approach for the analysis of carbonates in beachrock cements

et al. 2015

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Section: Petrographic Analysesmentioning

confidence: 99%

A multianalytical X-ray based micro-spectroscopic approach for the analysis of carbonates in beachrock cements

et al. 2015

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“…The topic concerning the hydrogen reduction of iron oxides has been studied for a long time, at least for a century. [ 5 ] Studies have unanimously shown an increasing reaction rate with increasing temperature. It has also been shown that the reduced product, as well as the morphology of the reduced product, depends on reaction rate and temperature and can be classified into 1) porous iron; 2) dense iron formed around porous wüstite grains; and 3) dense iron formed around dense wüstite.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Nitrogen on Hydrogen Reduction of Iron Ore Pellets

Fogelström,

Martinsson,

Kojola

2024

steel research int.

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As the iron and steel industry now strives for a carbon neutral industry, hydrogen‐based direct reduction shaft furnace technology has become an alternative to the heavily fossil‐depending blast furnace route. Research questions related to the future full‐scale production have, therefore, become more interesting. Depending on the operational conditions, the H2 concentration and temperature will vary across the length of the reactor. This work studies the effect of nitrogen in a hydrogen‐reducing gas during the reduction of commercial iron ore pellets using thermogravimetric analysis. The reducing gas consisted of either pure hydrogen or a mixture of 90–70 vol% hydrogen and 10–30 vol% nitrogen at 773, 873, 973, 1073, and 1173 K. It is found that the reduction rate decreased with decreasing temperature and increasing nitrogen content. The effect of nitrogen on the reduction rate is more profound than expected from the decreased hydrogen partial pressure alone. To aid the discussion, partially reduced pellets are studied using optical and scanning electron microscopy. It is found that the microstructure is strongly dependent on the temperature but independent of the nitrogen content.

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“…The Myers-Briggs Type Indicator (Meyers & Meyers, 1987) aids one in understanding psychological preferences, strengths, and motivations. Two Leadership Practices Inventories (LPI) (Kouzes & Posner, 1997) include the LPI-Self, in which the respondent rates his or her own leadership style, and the LPI-Other, in which coworkers rate the leadership style of the fellow.…”

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confidence: 99%