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Carbon Formation in Direct Reduced I...

Godoy, Michelle P.,

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Carbon Formation in Direct Reduced Iron and Hot Briquetted Iron /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Carbon Formation in Direct Reduced Iron and Hot Briquetted Iron // Michelle P Godoy.
作者:	Godoy, Michelle P.,
面頁冊數:	1 electronic resource (94 pages)
附註:	Source: Masters Abstracts International, Volume: 82-10.
Contained By:	Masters Abstracts International82-10.
標題:	Thermodynamics. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28092766
ISBN:	9798708748485

Carbon Formation in Direct Reduced Iron and Hot Briquetted Iron /
Godoy, Michelle P.,

Carbon Formation in Direct Reduced Iron and Hot Briquetted Iron /Michelle P Godoy. - 1 electronic resource (94 pages)

Source: Masters Abstracts International, Volume: 82-10.

Carbon formation in the MIDREX© reduction shaft at voestalpine Texas LLC was investigated with computational simulations and physical examination of hot briquetted iron and direct reduced iron. Simulations were carried out utilizing HSC thermodynamic software, ANSYS Fluent computational fluid dynamic software and a material balance analysis. The simulation provided the theoretical amounts of carbon formation possible in the reduction shaft along with temperature and gas distribution profiles. The computational results led to a focused analysis of the transition zone due to the lack of interference with the reduction process, the greater possible range in process condition changes and increased quality control. The physical analysis was carried out utilizing x-ray diffraction, Mossbauer spectroscopy, total carbon content analysis, metallography and TIMA mineralogy. Plant trials were conducted to determine the carbon formation at various operating ranges. Prior to the trials, baseline testing was conducted to determine carbon variance. Additionally, material was collected during a furnace discharge and it was estimated that the bustle region introduces 44% of the total carbon formation. The transition zone trial proved carbon formation could be altered by a change of flow rate. The carbon was positively impacted by a higher transition zone flow rate, specifically a + 20.2 relative carbon percent was experienced with a 1000 SCFM increase of transition zone flow. A temperature change of the discharge material was also experienced due to the endothermic nature of the cracking of methane. Increased temperatures were experienced at the low flow rate set point, which had a positive effect on the briquetting density. The density was closely correlated with briquetting temperature rather than carbon formation.

English

ISBN: 9798708748485Subjects--Topical Terms:

517304
Thermodynamics.
Subjects--Index Terms:

Carburization

Carbon Formation in Direct Reduced Iron and Hot Briquetted Iron /
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500 $a Source: Masters Abstracts International, Volume: 82-10.
500 $a Advisors: De Moor, Emmanuel Committee members: Taylor, Patrick; Anderson, Corby.
502 $b M.S. $c Colorado School of Mines $d 2020.
520 $a Carbon formation in the MIDREX© reduction shaft at voestalpine Texas LLC was investigated with computational simulations and physical examination of hot briquetted iron and direct reduced iron. Simulations were carried out utilizing HSC thermodynamic software, ANSYS Fluent computational fluid dynamic software and a material balance analysis. The simulation provided the theoretical amounts of carbon formation possible in the reduction shaft along with temperature and gas distribution profiles. The computational results led to a focused analysis of the transition zone due to the lack of interference with the reduction process, the greater possible range in process condition changes and increased quality control. The physical analysis was carried out utilizing x-ray diffraction, Mossbauer spectroscopy, total carbon content analysis, metallography and TIMA mineralogy. Plant trials were conducted to determine the carbon formation at various operating ranges. Prior to the trials, baseline testing was conducted to determine carbon variance. Additionally, material was collected during a furnace discharge and it was estimated that the bustle region introduces 44% of the total carbon formation. The transition zone trial proved carbon formation could be altered by a change of flow rate. The carbon was positively impacted by a higher transition zone flow rate, specifically a + 20.2 relative carbon percent was experienced with a 1000 SCFM increase of transition zone flow. A temperature change of the discharge material was also experienced due to the endothermic nature of the cracking of methane. Increased temperatures were experienced at the low flow rate set point, which had a positive effect on the briquetting density. The density was closely correlated with briquetting temperature rather than carbon formation.
546 $a English
590 $a School code: 0052
650 4 $a Thermodynamics. $3 517304
650 4 $a Materials science. $3 543314
650 4 $a Mechanical engineering. $3 649730
653 $a Carburization
653 $a Direct Reduced Iron
653 $a Direct reduction
653 $a Hot Briquetted Iron
690 $a 0794
690 $a 0548
690 $a 0348
710 2 $a Colorado School of Mines. $b Metallurgical and Materials Engineering. $e degree granting institution. $3 3815642
720 1 $a De Moor, Emmanuel $e degree supervisor.
773 0 $t Masters Abstracts International $g 82-10.
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791 $a M.S.
792 $a 2020
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