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Rocks with an enrichment of topaz (quartz-topaz quartzolites) found in the Krkonoše-Jizera crystalline complex in northern Bohemia or a potential secondary raw material from the mining of cast mica from greisen (Czechia) can be a suitable raw material for obtaining topaz concentrate for its subsequent use in Abrasive Water Jet (AWJ) technology as an abrasive. Topaz from these rocks has good mineralogical parameters, density and hardness. The grains of the topaz concentrate are also less fractured. This article outlines the basic properties of topaz in relation to its use as a potential abrasive for AWJ, including basic testing of its cutting abilities compared to other abrasive concentrates. The cutting performance of topaz was found to achieve 90.5% of the cutting performance of almandine garnet GMA 80 when cutting AISI 304 steel, while exhibiting better cutting properties than andradite garnet or quartz sand of the same grain size.

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Topaz as a Potential Abrasive for Cutting and Surface Treatment of Materials by AWJ Technology

  • 会议论文

  • 发表日期：

    2025年

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  • Petr Martinec,
  • Libor Sitek,
  • František Veselovský,
  • Petr Hlaváček,
  • Josef Foldyna,
  • Josef Klomínský,
  • Roman Gabor,
  • Lucie Němcová,
  • Lucie Ruppenthalová

摘要

Rocks with an enrichment of topaz (quartz-topaz quartzolites) found in the Krkonoše-Jizera crystalline complex in northern Bohemia or a potential secondary raw material from the mining of cast mica from greisen (Czechia) can be a suitable raw material for obtaining topaz concentrate for its subsequent use in Abrasive Water Jet (AWJ) technology as an abrasive. Topaz from these rocks has good mineralogical parameters, density and hardness. The grains of the topaz concentrate are also less fractured. This article outlines the basic properties of topaz in relation to its use as a potential abrasive for AWJ, including basic testing of its cutting abilities compared to other abrasive concentrates. The cutting performance of topaz was found to achieve 90.5% of the cutting performance of almandine garnet GMA 80 when cutting AISI 304 steel, while exhibiting better cutting properties than andradite garnet or quartz sand of the same grain size.