• Title/Summary/Keyword: Molten Metal

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A Study on the Recycling of Molten Ladle Slag Residue into LF Process (Ladle내 잔류(殘留) 용융(熔融)슬래그의 LF 공정(工程)으로 재활용(再活用)에 관한 연구(硏究))

  • Kim, Young-Hwan;Yoo, Jung-Min;Kim, Dong-Sik;Lim, Jong-Hoon;Yang, Sung-Ho
    • Resources Recycling
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    • v.22 no.1
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    • pp.36-41
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    • 2013
  • LF slag is formed by EAF carryover slag and slag former(such as lime, dolomite) put into the ladle during the tapping molten metal. After LF process, continuous casting is started when molten steel is sent from ladle to tundish through bottom nozzle of ladle. Conventionally, remained molten slag and steel in ladle are poured into a slag port and they are transferred to a slag yard and then recycled. In this study, we investigated about recycling of molten LF slag residue(including Fe residue to reuse) which is made in steelmaking process. As a result, lime usage was decreased about 2.2~3.2 kg/steel-ton and also molten steel yield rate was increased about 0.3 ~ 0.5 percent point.

Comparison of the Recriticality Risk of Fast Reactor Cores following a HCDA

  • Na, Byung-Chan;Dohee Hahn
    • Proceedings of the Korean Nuclear Society Conference
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    • 1997.05a
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    • pp.495-501
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    • 1997
  • A preliminary and parametric sensitivity study on recriticality risk of fast reactor cores after a hypothetical total core meltdown accident was performed. Only neutronic aspects of the accident were considered, independent of the accident scenario, and efforts were made to estimate the quantity of molten fuel which must be ejected out of the core to assure a sub-critical state after the accident. Two types of parameters were examined : characteristic parameters of molten core such as geometry, molten pool type (homogenized or stratified), fuel temperature, environment, and relative parameters to normal core such as core size(small or large), and fuel type (oxide, nitride, metal). The first type of parameters was found to intervene more directly in the recriticality risk than the second type of parameters.

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Analysis and Design of the Sin91e-sided Linear Induction Motor for Transferring Molten Metal (용융금속 이송용 편측식 선형유도전동기의 설계 및 해석)

  • Kim, C.E.;Hong, S.O.;Kim, S.W.;Shim, D.J.
    • Proceedings of the KIEE Conference
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    • 1999.11b
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    • pp.46-48
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    • 1999
  • This paper presents the design and characteristics analysis of a linear induction motor applied to molten metals. A linear induction motor is designed to increased to thrust and is applied to the experimental instrument. The experiment shows the availability of the LIM for transferring the molten metals.

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Analysis of Temperature of Molten Aluminium Holding Furnace and Stress of Substructure Frame (알루미늄 용탕 보온로의 열해석 및 하부 구조물의 강도해석)

  • Park, Sang-Soo;Kang, Chung-Gil;Kim, Byung-Min
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.10 s.175
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    • pp.129-136
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    • 2005
  • The demand on thermos furnace of Al molten metal has recently been getting higher and higher according to the increase in use of Al and Al alloys. This study considers the estimation of the thermal and mechanical stability in the thermos furnace for Al casting. It is executed through the analysis of heat transfer on the refractory material and heat stress on each steel shell. Also, the estimation of structural stability was appraised through the strength analysis of the lower structure. In result, the temperature of steel shell rose to 320.15K and its elastic deformation was about 1.5mm. The elastic deformation of the lower structure was about 0.66mm. As a result of it, the data obtain from the analysis in this study are regarded as stable value on considering that the size of the furnace is 2500mm.