チタン酸バリウム系廃材の低温リサイクルプロセス

菊田 浩一; 清水 泰光; 盛谷 政義; 山口 十志明; 平野 眞一; 斉藤 芳則; 三好 利幸; 山本 宏; 坂部 行雄

doi:10.2109/jcersj.114.392

Papers

Low Temperature Recycling Process for Barium Titanate Based Waste

Koichi KIKUTA, Yasumitsu SHIMIZU, Masayoshi MORIYA, Toshiaki YAMAGUCHI, Shin-ichi HIRANO, Yoshinori SAITO, Toshiyuki MIYOSHI, Hiroshi YAMAMOTO, Yukio SAKABE

Author information

Koichi KIKUTA
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
Yasumitsu SHIMIZU
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
Masayoshi MORIYA
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
Toshiaki YAMAGUCHI
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
Shin-ichi HIRANO
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
Yoshinori SAITO
Murata Manufacturing Co., Ltd.
Toshiyuki MIYOSHI
Murata Manufacturing Co., Ltd.
Hiroshi YAMAMOTO
Murata Manufacturing Co., Ltd.
Yukio SAKABE
Murata Manufacturing Co., Ltd.

Keywords: Recycle process, Barium titanate, Photocatalyst, Anatase, Rutile

JOURNAL FREE ACCESS

2006 Volume 114 Issue 1329 Pages 392-394

DOI https://doi.org/10.2109/jcersj.114.392

Details

Abstract

A recycling process was developed for barium titanate based waste material, which is produced in the large scale industrial production of ceramic capacitors and related devices. Barium titanate powder was first dissolved in a concentrated aqueous HCl solution, followed by dilution with water and heating to 100°C, which resulted in the precipitation of a white crystalline titania powder. The crystalline phase of the prepared titania can be controlled by the preparation conditions, i.e., heating rate, and this process successfully produced pure anatase powder with good photo-catalytic activity. The barium ion, another main component, was also separated as barium sulfate by a simple precipitation process.

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