Quality Improvement of Low-Grade Calcium Carbonate Using Induced Roll Magnetic Separator

Authors

  • Pimpichcha Teawpanich
  • Somsak Saisinchai
  • Apisit Numprasanthai
  • Raphael Bissen
  • Onchanok Juntarasakul
  • Carlito Baltazar Tabelin
  • Theerayut Phengsaart

DOI:

https://doi.org/10.4186/ej.2023.27.10.1 Full article

Abstract

Calcium carbonate (CaCO3) is an essential raw material in the manufacture of goods and industrial products like cement, rubber, paper, paints, food, and medicines. For this compound to be economically valuable, however, its quality needs to meet the standard market requirements. Among the various impurities found in natural CaCO3-bearing ores, iron (Fe) is one of the most problematic. In this study, the upgrading of low-grade CaCO3 from a processing plant in Thailand by magnetic separation was investigated. Detailed characterization of the low-grade material was also carried out to identify the solid-phase partitioning of Fe. The results showed that Fe was mainly associated with magnetite and pyrrhotite in the ore, and during processing, additional Fe was introduced from the ball milling process. To improve the quality of this low-grade CaCO3, the effects of magnetic field intensity, feed rate, and repetition on the induce roll magnetic separation were investigated. Based on the results, higher magnetic field intensity, lower feed rate, and more repetition are required for the upgrading of low-grade CaCO3.

Keywords:

calcium carbonate, limestone, magnetic separation, iron content, ball mill

Affiliations

  • Pimpichcha Teawpanich Chulalongkorn University
  • Somsak Saisinchai Chulalongkorn University
  • Apisit Numprasanthai Chulalongkorn University
  • Raphael Bissen Chulalongkorn University
  • Onchanok Juntarasakul Chulalongkorn University
  • Carlito Baltazar Tabelin Mindanao State University - Iligan Institute of Technology
  • Theerayut Phengsaart Chulalongkorn University

Corresponding author: Theerayut Phengsaart, theerayut.p@chula.ac.th

2102 1497

Author Biographies

  • Pimpichcha Teawpanich

    Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

  • Somsak Saisinchai

    Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

  • Apisit Numprasanthai

    Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

  • Raphael Bissen

    Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

  • Onchanok Juntarasakul

    Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

  • Carlito Baltazar Tabelin

    Department of Materials and Resources Engineering Technology, College of Engineering, Mindanao State University - Iligan Institute of Technology, Iligan City 9200, Philippines

  • Theerayut Phengsaart

    Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

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How to Cite

[1]
P. Teawpanich et al., “Quality Improvement of Low-Grade Calcium Carbonate Using Induced Roll Magnetic Separator”, Eng. J., vol. 27, no. 10, pp. 1–10, Oct. 2023, doi: 10.4186/ej.2023.27.10.1.

Citations

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Published

2023-10-31

Issue

Vol. 27 No. 10 (2023): Regular Issue

Section

Environment, Energy and Natural Resources

License

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