Collection of Ni-bearing material from electroless plating waste by magnetic separation with HTS bulk magnet

Tetsuo Oka, H. Fukazawa, S. Fukui, J. Ogawa, T. Sato, M. Ooizumi, M. Tsujimura, K. Yokoyama

研究成果: Article

11 引用 (Scopus)

抄録

The magnetic separation experiment to collect the Ni compounds from the waste liquid of electroless plating processes was conducted in the open-gradient magnetic separation process with the high temperature superconducting bulk magnet system. The magnetic pole containing Gd-based bulk superconductors was activated to 3.45 T at 35 K in the static magnetic field of 5 T with use of a superconducting solenoid magnet. The coarse Ni-sulfate crystals were formed by adding the concentrated sulfuric acid to the Ni-phosphite precipitates which yielded from the plating waste liquid by controlling the temperature and the pH value. The open-gradient magnetic separation technique was employed to separate the Ni-sulfate crystals from the mixture of the Ni-sulfate and Ni-phosphite compounds by the difference between their magnetic properties. And we succeeded in collecting Ni-sulfate crystals preferentially to the Ni-phosphite by attracting them to the magnetic pole soon after the Ni-sulfate crystals began to grow.

元の言語English
ページ(範囲)58-62
ページ数5
ジャーナルPhysica C: Superconductivity and its Applications
496
発行部数C
DOI
出版物ステータスPublished - 2014 1 15
外部発表Yes

Fingerprint

Bearings (structural)
Magnetic separation
Electroless plating
plating
Sulfates
Magnets
sulfates
Phosphites
magnets
liquid wastes
magnetic poles
Crystals
crystals
Poles
gradients
Solenoids
Liquids
sulfuric acid
solenoids
Sulfuric acid

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

これを引用

Collection of Ni-bearing material from electroless plating waste by magnetic separation with HTS bulk magnet. / Oka, Tetsuo; Fukazawa, H.; Fukui, S.; Ogawa, J.; Sato, T.; Ooizumi, M.; Tsujimura, M.; Yokoyama, K.

:: Physica C: Superconductivity and its Applications, 巻 496, 番号 C, 15.01.2014, p. 58-62.

研究成果: Article

Oka, Tetsuo ; Fukazawa, H. ; Fukui, S. ; Ogawa, J. ; Sato, T. ; Ooizumi, M. ; Tsujimura, M. ; Yokoyama, K. / Collection of Ni-bearing material from electroless plating waste by magnetic separation with HTS bulk magnet. :: Physica C: Superconductivity and its Applications. 2014 ; 巻 496, 番号 C. pp. 58-62.
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abstract = "The magnetic separation experiment to collect the Ni compounds from the waste liquid of electroless plating processes was conducted in the open-gradient magnetic separation process with the high temperature superconducting bulk magnet system. The magnetic pole containing Gd-based bulk superconductors was activated to 3.45 T at 35 K in the static magnetic field of 5 T with use of a superconducting solenoid magnet. The coarse Ni-sulfate crystals were formed by adding the concentrated sulfuric acid to the Ni-phosphite precipitates which yielded from the plating waste liquid by controlling the temperature and the pH value. The open-gradient magnetic separation technique was employed to separate the Ni-sulfate crystals from the mixture of the Ni-sulfate and Ni-phosphite compounds by the difference between their magnetic properties. And we succeeded in collecting Ni-sulfate crystals preferentially to the Ni-phosphite by attracting them to the magnetic pole soon after the Ni-sulfate crystals began to grow.",
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AU - Oka, Tetsuo

AU - Fukazawa, H.

AU - Fukui, S.

AU - Ogawa, J.

AU - Sato, T.

AU - Ooizumi, M.

AU - Tsujimura, M.

AU - Yokoyama, K.

PY - 2014/1/15

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N2 - The magnetic separation experiment to collect the Ni compounds from the waste liquid of electroless plating processes was conducted in the open-gradient magnetic separation process with the high temperature superconducting bulk magnet system. The magnetic pole containing Gd-based bulk superconductors was activated to 3.45 T at 35 K in the static magnetic field of 5 T with use of a superconducting solenoid magnet. The coarse Ni-sulfate crystals were formed by adding the concentrated sulfuric acid to the Ni-phosphite precipitates which yielded from the plating waste liquid by controlling the temperature and the pH value. The open-gradient magnetic separation technique was employed to separate the Ni-sulfate crystals from the mixture of the Ni-sulfate and Ni-phosphite compounds by the difference between their magnetic properties. And we succeeded in collecting Ni-sulfate crystals preferentially to the Ni-phosphite by attracting them to the magnetic pole soon after the Ni-sulfate crystals began to grow.

AB - The magnetic separation experiment to collect the Ni compounds from the waste liquid of electroless plating processes was conducted in the open-gradient magnetic separation process with the high temperature superconducting bulk magnet system. The magnetic pole containing Gd-based bulk superconductors was activated to 3.45 T at 35 K in the static magnetic field of 5 T with use of a superconducting solenoid magnet. The coarse Ni-sulfate crystals were formed by adding the concentrated sulfuric acid to the Ni-phosphite precipitates which yielded from the plating waste liquid by controlling the temperature and the pH value. The open-gradient magnetic separation technique was employed to separate the Ni-sulfate crystals from the mixture of the Ni-sulfate and Ni-phosphite compounds by the difference between their magnetic properties. And we succeeded in collecting Ni-sulfate crystals preferentially to the Ni-phosphite by attracting them to the magnetic pole soon after the Ni-sulfate crystals began to grow.

KW - Bulk superconductor

KW - Electroless plating

KW - Magnetic separation

KW - Nickel compound

KW - Waste liquid

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