Formation of CaCl 2 and CaF 2 from CaSO 4 and plastics containing halogen element

Shigeru Ueda; Yuuki Hatakeyama; Koji Uotani; Katsunori Yamaguchi; Takahiro Okura

doi:10.2355/tetsutohagane.95.387

Formation of CaCl ₂ and CaF ₂ from CaSO ₄ and plastics containing halogen element

Shigeru Ueda, Yuuki Hatakeyama, Koji Uotani, Katsunori Yamaguchi, Takahiro Okura

IMRAM - Center for Mineral Processing and Metallurgy (CMPM)

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

Abstract

Waste gypsum from construction materials have to be recycled legally in Japan. Combustion of plastics containing halogen may generate halide gas. Stabilization treatment of halogen element should be done. In the present study, the reaction between the plastics and gypsum generating calcium halide such as CaCl ₂ or CaF ₂ had been investigated. Reaction condition was evaluated thermodynamically, and experiment for generating CaCl ₂ and CaF ₂was conducted. CaCl ₂ was formed from CaSO ₄ and chloroethylene at 1273K. CaF ₂ was formed over 1173K. Crystal water of CaSO ₄ accelerates the reaction forming CaF ₂.

Original language	English
Pages (from-to)	387-392
Number of pages	6
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	95
Issue number	5
DOIs	https://doi.org/10.2355/tetsutohagane.95.387
Publication status	Published - 2009 May

Keywords

CaCl
CaF
CaSO
Gypsum
Waste plastics

Access to Document

10.2355/tetsutohagane.95.387

Cite this

@article{028ea2a4c6b64a2895e04e6df59ad0b1,

title = "Formation of CaCl 2 and CaF 2 from CaSO 4 and plastics containing halogen element",

abstract = "Waste gypsum from construction materials have to be recycled legally in Japan. Combustion of plastics containing halogen may generate halide gas. Stabilization treatment of halogen element should be done. In the present study, the reaction between the plastics and gypsum generating calcium halide such as CaCl 2 or CaF 2 had been investigated. Reaction condition was evaluated thermodynamically, and experiment for generating CaCl 2 and CaF 2was conducted. CaCl 2 was formed from CaSO 4 and chloroethylene at 1273K. CaF 2 was formed over 1173K. Crystal water of CaSO 4 accelerates the reaction forming CaF 2.",

keywords = "CaCl, CaF, CaSO, Gypsum, Waste plastics",

author = "Shigeru Ueda and Yuuki Hatakeyama and Koji Uotani and Katsunori Yamaguchi and Takahiro Okura",

year = "2009",

month = may,

doi = "10.2355/tetsutohagane.95.387",

language = "English",

volume = "95",

pages = "387--392",

journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",

issn = "0021-1575",

publisher = "Iron and Steel Institute of Japan",

number = "5",

}

TY - JOUR

T1 - Formation of CaCl 2 and CaF 2 from CaSO 4 and plastics containing halogen element

AU - Ueda, Shigeru

AU - Hatakeyama, Yuuki

AU - Uotani, Koji

AU - Yamaguchi, Katsunori

AU - Okura, Takahiro

PY - 2009/5

Y1 - 2009/5

N2 - Waste gypsum from construction materials have to be recycled legally in Japan. Combustion of plastics containing halogen may generate halide gas. Stabilization treatment of halogen element should be done. In the present study, the reaction between the plastics and gypsum generating calcium halide such as CaCl 2 or CaF 2 had been investigated. Reaction condition was evaluated thermodynamically, and experiment for generating CaCl 2 and CaF 2was conducted. CaCl 2 was formed from CaSO 4 and chloroethylene at 1273K. CaF 2 was formed over 1173K. Crystal water of CaSO 4 accelerates the reaction forming CaF 2.

AB - Waste gypsum from construction materials have to be recycled legally in Japan. Combustion of plastics containing halogen may generate halide gas. Stabilization treatment of halogen element should be done. In the present study, the reaction between the plastics and gypsum generating calcium halide such as CaCl 2 or CaF 2 had been investigated. Reaction condition was evaluated thermodynamically, and experiment for generating CaCl 2 and CaF 2was conducted. CaCl 2 was formed from CaSO 4 and chloroethylene at 1273K. CaF 2 was formed over 1173K. Crystal water of CaSO 4 accelerates the reaction forming CaF 2.

KW - CaCl

KW - CaF

KW - CaSO

KW - Gypsum

KW - Waste plastics

UR - http://www.scopus.com/inward/record.url?scp=68649091477&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68649091477&partnerID=8YFLogxK

U2 - 10.2355/tetsutohagane.95.387

DO - 10.2355/tetsutohagane.95.387

M3 - Article

AN - SCOPUS:68649091477

SN - 0021-1575

VL - 95

SP - 387

EP - 392

JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

IS - 5

ER -

Formation of CaCl ₂ and CaF ₂ from CaSO ₄ and plastics containing halogen element

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this