Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Removal of sulfur element from high-sulfur coal by superconducting HGMS technology

  • Received : 2019.03.13
  • Accepted : 2019.04.19
  • Published : 2019.06.30
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Abstract

Coal is the most abundant fossil fuel on Earth and is used in a wide range of applications. The direct combustion of high-sulfur coal produces a large amount of sulfur dioxide, which is a toxic and corrosive gas. A new superconducting high gradient magnetic separation (HGMS) technology was studied to remove sulfur from high sulfur coal. The magnetic separation concentrate was obtained under the optimum parameters, such as a particle size of -200 mesh, a magnetic field strength of 2.0 T, a slurry concentration of 15 g/L, and a slurry flow rate of 600 ml/min. The removal rate of sulfur is up to 59.9%. The method uses a magnetic field to remove sulfur-containing magnetic material from a pulverized coal solution. It is simple process with, high efficiency, and is a new way.

Keywords

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Fig. 1. Compositions and microstructure of coal.

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Fig. 2. Structure diagram of separating device for dynamic processing.

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Fig. 3. The effect of magnetic induction on separation efficiency

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Fig. 4. The effect of particle size on separation efficiency

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Fig. 5. The effect of slurry flow rate on separation efficiency

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Fig. 6. The effect of slurry concentration on separation efficiency

TABLE 1 CHEMICAL COMPOSITION OF COAL FROM JINCHENG.

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TABLE 2 CHEMICAL COMPOSITION OF COAL FROM DATONG.

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TABLE 3 THE MAIN PARAMETERS OF MAGNET.

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