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2018 Vol.55, Issue 5 Preview Page

Research Paper

Upgrading Beneficiation for the High Grade of Quartzite Ore

규석광의 고품위화를 위한 고도선별 정제

Moon Young Jung1*
정 문영1*
1세명대학교 바이오환경공학과
* Corresponding Author
31 October 2018. pp. 405-413
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Abstract

Beneficiation experiments were conducted by considering the properties of grinding products and the mineral characteristics of quartzite ore from Soonchang, Korea. Crystal sizes of ore mineral and of main gangue mineral (muscovite) were less than 150 µm and 50 µm, respectively. Because of the trace of magnetic and clay minerals present in the fine particles, the quartzite ore could not be obtained as high-quality silica concentrate only through reverse flotation, a process that effectively removes the muscovite. Thus, an additional process was required to remove magnetic minerals that degrade the quality of concentrate and slime that increase the amount of flotation reagents. In other words, as a result of reverse flotation with the addition of 50 g/ton of Armac C to quartzite ore milling products of less than 100 mesh, which were processed by desliming and wet magnetic separation, high-grade refined silicate concentrate of 99.50% (or more) SiO2 was recovered.

Keywords
quartzite ore
grinding
desliming
magnetic separation
reverse flotation

순창 규석광의 광물학적 특성 및 분쇄산물의 입도별 특성을 고려하여 정제실험을 수행하였다. 규석광의 광석광물인 석영의 결정크기는 150 µm 이하 그리고 주요 맥석광물인 백운모의 결정크기는 50 µm 이하였다. 규석광은 미립으로 존재하는 미량의 자성광물 및 점토광물 때문에 백운모를 효과적으로 제거하는 역부선만으로는 고품위 규사 정광을 얻을 수 없었다. 따라서 부선시약의 사용 양을 증가시키는 슬라임과 정광의 품위를 저하시키는 자성광물을 사전에 제거하는 공정이 요구되었다. 즉, 슬라임 제거 및 습식자력선별 공정을 거친 100 mesh이하 규석광 분쇄산물에 대한 역부선 결과로서, 양이온 포수제인 Armac C를 50 g/ton 소량 첨가하여 SiO2 품위가 99.50% 이상(Al2O3 0.130% 이하, Fe2O3 0.060% 이하)인 고품위 규석 정광을 회수하였다.

키워드
규석광
분쇄
탈슬라임
자력선별
역부선
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 55
  • No :5
  • Pages :405-413
  • Received Date : 2018-10-01
  • Revised Date : 2018-10-26
  • Accepted Date : 2018-10-26
  • DOI :https://doi.org/10.32390/ksmer.2018.55.5.405
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