Metal production in CaCl2-based melts

R. O. Suzuki; N. Noguchi; Y. Haraguchi; S. Natsui; T. Kikuchi

doi:10.1149/08614.0045ecst

Metal production in CaCl₂-based melts

R. O. Suzuki, N. Noguchi, Y. Haraguchi, S. Natsui, T. Kikuchi

IMRAM - Division of Process and System Engineering

Hokkaido University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Citations (Scopus)

Abstract

In order to produce metals directly from the oxides, molten CaO-CaCl₂ mixture offers a strong reducing environment. CaO in CaCfe melt electrochemically decomposes into metallic Ca and O^2- by applying a certain voltage larger than the theoretical decomposition voltage of CaO. Ca, deposited on cathode and dissolved in the melt, can work as strong reductant. Various metals such as Ti can be produced directly from their stable oxides. Although this calciothermic reduction forms CaO as by-product close to the cathode, CaO dissolves in CaCl₂ melt and decomposes again by electrolysis. This OS process could be applied to solid, liquid and gaseous oxides. By applying the sulfides, good quality of metal is realized because they do not form solid solution of sulfur.

Original language	English
Title of host publication	ECS Transactions
Editors	W. Matthew Reichert, Robert A. Mantz, Paul C. Trulove, Luke M. Haverhals, Elizabeth J. Biddinger, Hugh C. De Long, Alice H. Suroviec, Minoru Mizuhata, Mikito Ueda, Adriana Ispas, Andreas Bund, David P. Durkin
Publisher	Electrochemical Society Inc.
Pages	45-53
Number of pages	9
Edition	14
ISBN (Electronic)	9781607688617
ISBN (Print)	9781510871748
DOIs	https://doi.org/10.1149/08614.0045ecst
Publication status	Published - 2018
Event	Symposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico Duration: 2018 Sept 30 → 2018 Oct 4

Publication series

Name	ECS Transactions
Number	14
Volume	86
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	Symposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting
Country/Territory	Mexico
City	Cancun
Period	18/9/30 → 18/10/4

Access to Document

10.1149/08614.0045ecst

Cite this

Suzuki, R. O., Noguchi, N., Haraguchi, Y., Natsui, S., & Kikuchi, T. (2018). Metal production in CaCl₂-based melts. In W. M. Reichert, R. A. Mantz, P. C. Trulove, L. M. Haverhals, E. J. Biddinger, H. C. De Long, A. H. Suroviec, M. Mizuhata, M. Ueda, A. Ispas, A. Bund, & D. P. Durkin (Eds.), ECS Transactions (14 ed., pp. 45-53). (ECS Transactions; Vol. 86, No. 14). Electrochemical Society Inc.. https://doi.org/10.1149/08614.0045ecst

Suzuki, R. O. ; Noguchi, N. ; Haraguchi, Y. et al. / Metal production in CaCl₂-based melts. ECS Transactions. editor / W. Matthew Reichert ; Robert A. Mantz ; Paul C. Trulove ; Luke M. Haverhals ; Elizabeth J. Biddinger ; Hugh C. De Long ; Alice H. Suroviec ; Minoru Mizuhata ; Mikito Ueda ; Adriana Ispas ; Andreas Bund ; David P. Durkin. 14. ed. Electrochemical Society Inc., 2018. pp. 45-53 (ECS Transactions; 14).

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abstract = "In order to produce metals directly from the oxides, molten CaO-CaCl2 mixture offers a strong reducing environment. CaO in CaCfe melt electrochemically decomposes into metallic Ca and O2- by applying a certain voltage larger than the theoretical decomposition voltage of CaO. Ca, deposited on cathode and dissolved in the melt, can work as strong reductant. Various metals such as Ti can be produced directly from their stable oxides. Although this calciothermic reduction forms CaO as by-product close to the cathode, CaO dissolves in CaCl2 melt and decomposes again by electrolysis. This OS process could be applied to solid, liquid and gaseous oxides. By applying the sulfides, good quality of metal is realized because they do not form solid solution of sulfur.",

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note = "Publisher Copyright: {\textcopyright} 2018 Electrochemical Society Inc.All rights reserved.; Symposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting ; Conference date: 30-09-2018 Through 04-10-2018",

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editor = "Reichert, {W. Matthew} and Mantz, {Robert A.} and Trulove, {Paul C.} and Haverhals, {Luke M.} and Biddinger, {Elizabeth J.} and {De Long}, {Hugh C.} and Suroviec, {Alice H.} and Minoru Mizuhata and Mikito Ueda and Adriana Ispas and Andreas Bund and Durkin, {David P.}",

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Suzuki, RO, Noguchi, N, Haraguchi, Y, Natsui, S & Kikuchi, T 2018, Metal production in CaCl₂-based melts. in WM Reichert, RA Mantz, PC Trulove, LM Haverhals, EJ Biddinger, HC De Long, AH Suroviec, M Mizuhata, M Ueda, A Ispas, A Bund & DP Durkin (eds), ECS Transactions. 14 edn, ECS Transactions, no. 14, vol. 86, Electrochemical Society Inc., pp. 45-53, Symposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting, Cancun, Mexico, 18/9/30. https://doi.org/10.1149/08614.0045ecst

Metal production in CaCl₂-based melts. / Suzuki, R. O.; Noguchi, N.; Haraguchi, Y. et al.
ECS Transactions. ed. / W. Matthew Reichert; Robert A. Mantz; Paul C. Trulove; Luke M. Haverhals; Elizabeth J. Biddinger; Hugh C. De Long; Alice H. Suroviec; Minoru Mizuhata; Mikito Ueda; Adriana Ispas; Andreas Bund; David P. Durkin. 14. ed. Electrochemical Society Inc., 2018. p. 45-53 (ECS Transactions; Vol. 86, No. 14).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Metal production in CaCl2-based melts

AU - Suzuki, R. O.

AU - Noguchi, N.

AU - Haraguchi, Y.

AU - Natsui, S.

AU - Kikuchi, T.

PY - 2018

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N2 - In order to produce metals directly from the oxides, molten CaO-CaCl2 mixture offers a strong reducing environment. CaO in CaCfe melt electrochemically decomposes into metallic Ca and O2- by applying a certain voltage larger than the theoretical decomposition voltage of CaO. Ca, deposited on cathode and dissolved in the melt, can work as strong reductant. Various metals such as Ti can be produced directly from their stable oxides. Although this calciothermic reduction forms CaO as by-product close to the cathode, CaO dissolves in CaCl2 melt and decomposes again by electrolysis. This OS process could be applied to solid, liquid and gaseous oxides. By applying the sulfides, good quality of metal is realized because they do not form solid solution of sulfur.

AB - In order to produce metals directly from the oxides, molten CaO-CaCl2 mixture offers a strong reducing environment. CaO in CaCfe melt electrochemically decomposes into metallic Ca and O2- by applying a certain voltage larger than the theoretical decomposition voltage of CaO. Ca, deposited on cathode and dissolved in the melt, can work as strong reductant. Various metals such as Ti can be produced directly from their stable oxides. Although this calciothermic reduction forms CaO as by-product close to the cathode, CaO dissolves in CaCl2 melt and decomposes again by electrolysis. This OS process could be applied to solid, liquid and gaseous oxides. By applying the sulfides, good quality of metal is realized because they do not form solid solution of sulfur.

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BT - ECS Transactions

A2 - Reichert, W. Matthew

A2 - Mantz, Robert A.

A2 - Trulove, Paul C.

A2 - Haverhals, Luke M.

A2 - Biddinger, Elizabeth J.

A2 - De Long, Hugh C.

A2 - Suroviec, Alice H.

A2 - Mizuhata, Minoru

A2 - Ueda, Mikito

A2 - Ispas, Adriana

A2 - Bund, Andreas

A2 - Durkin, David P.

PB - Electrochemical Society Inc.

T2 - Symposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting

Y2 - 30 September 2018 through 4 October 2018

ER -