T
Tetsuya Nagasaka
Researcher at Tohoku University
Publications - 195
Citations - 4000
Tetsuya Nagasaka is an academic researcher from Tohoku University. The author has contributed to research in topics: Steelmaking & Slag. The author has an hindex of 32, co-authored 184 publications receiving 3211 citations. Previous affiliations of Tetsuya Nagasaka include National Institute for Environmental Studies & Carnegie Mellon University.
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The Waste Input-Output Approach to Materials Flow Analysis
TL;DR: A general analytical model of materials flow analysis (MFA) incorporating physical waste input‐output is proposed that is fully consistent with the mass balance principle and applied to Japanese IO data for the flow of 11 base metals and their scrap.
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A Material Flow Analysis of Phosphorus in Japan
TL;DR: In this article, the authors investigated the material flow of phosphorus within Japan, including that in the iron and steel industry, on the basis of statistical data for 2002 and found that the quantity of phosphorus in iron-making slag is almost equivalent to that in imported phosphate ore in terms of both the amount and concentration.
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Activities of the constituents in spinel solid solution and free energies of formation of MgO, MgO.Al2O3
TL;DR: In this article, the free energies of formation of MgO and Al 2 O 3 have been directly measured by the chemical equilibrium technique, and the results showed that the spinel formation can be avoided by using the knowledge of thermodynamic information on spinels.
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Thermodynamic Analysis of Contamination by Alloying Elements in Aluminum Recycling
Kenichi Nakajima,Osamu Takeda,Takahiro Miki,Kazuyo Matsubae,Shinichiro Nakamura,Tetsuya Nagasaka +5 more
TL;DR: The results show that, except for elements such as Mg and Zn, most of the impurities occurred as troublesome tramp elements that are difficult to remove, and indicate that the extent to which the process parameters can be changed in aluminum production is quite limited compared to that for iron and copper production.
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Green synthesis of zeolite 4A using fly ash fused with synergism of NaOH and Na2CO3
Liyun Yang,Liyun Yang,Xiaoming Qian,Peng Yuan,Hao Bai,Takahiro Miki,Fanxu Men,Hong Li,Tetsuya Nagasaka +8 more
TL;DR: In this paper, a high-purity zeolite 4A was synthesized by the hydrothermal method using fly ash as the raw material, and the effects of sodium hydroxide (NaOH) or/and sodium carbonate (Na2CO3) on the activation of fly ash were studied.