部分還元処理による鉄鉱石中りんのダイカルシウムシリケート相への濃化

Nobuhiro Maruoka; Hironari Kubo

doi:10.2355/tetsutohagane.TETSU-2020-082

部分還元処理による鉄鉱石中りんのダイカルシウムシリケート相への濃化

Translated title of the contribution: Enrichment of Phosphorus from Iron Ore to Dicalcium-silicate Phase by Partial Reduction

Nobuhiro Maruoka, Hironari Kubo

Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

It is necessary to develop an innovative iron-making technology for low-grade iron ore containing a high concentration of P. In this study, we propose a new process for enriching phosphorus in the C₂S phase by mixing high-P iron ore, CaO, and graphite in appropriate proportions and partially reducing it. In this study, high-P iron ore adjusted to various basicities and reducing agent ratios was heated at 1573 K in Ar atmosphere, and the obtained sample was analyzed by EPMA. The results showed that in the reduced sample obtained under the conditions of C/S = 2.0 and Target Fe_tO = 60%, more than 95% of P was distributed to the C₂S phase, and the P content in metallic iron was sufficiently low.

Translated title of the contribution	Enrichment of Phosphorus from Iron Ore to Dicalcium-silicate Phase by Partial Reduction
Original language	Japanese
Pages (from-to)	527-533
Number of pages	7
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	107
Issue number	6
DOIs	https://doi.org/10.2355/tetsutohagane.TETSU-2020-082
Publication status	Published - 2021 Jun 1

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

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10.2355/tetsutohagane.TETSU-2020-082

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title = "部分還元処理による鉄鉱石中りんのダイカルシウムシリケート相への濃化",

abstract = "It is necessary to develop an innovative iron-making technology for low-grade iron ore containing a high concentration of P. In this study, we propose a new process for enriching phosphorus in the C2S phase by mixing high-P iron ore, CaO, and graphite in appropriate proportions and partially reducing it. In this study, high-P iron ore adjusted to various basicities and reducing agent ratios was heated at 1573 K in Ar atmosphere, and the obtained sample was analyzed by EPMA. The results showed that in the reduced sample obtained under the conditions of C/S = 2.0 and Target FetO = 60%, more than 95% of P was distributed to the C2S phase, and the P content in metallic iron was sufficiently low.",

keywords = "Dicalcium silicate, Ironmaking, Low grade ore, Phosphorous, Separation",

author = "Nobuhiro Maruoka and Hironari Kubo",

note = "Publisher Copyright: {\textcopyright} 2021 The Iron and Steel Institute of Japan",

year = "2021",

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doi = "10.2355/tetsutohagane.TETSU-2020-082",

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T1 - 部分還元処理による鉄鉱石中りんのダイカルシウムシリケート相への濃化

AU - Maruoka, Nobuhiro

AU - Kubo, Hironari

PY - 2021/6/1

Y1 - 2021/6/1

N2 - It is necessary to develop an innovative iron-making technology for low-grade iron ore containing a high concentration of P. In this study, we propose a new process for enriching phosphorus in the C2S phase by mixing high-P iron ore, CaO, and graphite in appropriate proportions and partially reducing it. In this study, high-P iron ore adjusted to various basicities and reducing agent ratios was heated at 1573 K in Ar atmosphere, and the obtained sample was analyzed by EPMA. The results showed that in the reduced sample obtained under the conditions of C/S = 2.0 and Target FetO = 60%, more than 95% of P was distributed to the C2S phase, and the P content in metallic iron was sufficiently low.

AB - It is necessary to develop an innovative iron-making technology for low-grade iron ore containing a high concentration of P. In this study, we propose a new process for enriching phosphorus in the C2S phase by mixing high-P iron ore, CaO, and graphite in appropriate proportions and partially reducing it. In this study, high-P iron ore adjusted to various basicities and reducing agent ratios was heated at 1573 K in Ar atmosphere, and the obtained sample was analyzed by EPMA. The results showed that in the reduced sample obtained under the conditions of C/S = 2.0 and Target FetO = 60%, more than 95% of P was distributed to the C2S phase, and the P content in metallic iron was sufficiently low.

KW - Dicalcium silicate

KW - Ironmaking

KW - Low grade ore

KW - Phosphorous

KW - Separation

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部分還元処理による鉄鉱石中りんのダイカルシウムシリケート相への濃化

Abstract

ASJC Scopus subject areas

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