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  1. The effect of H2SO4 concentration and time on the sphalerite leaching process

    Article • January 2024, American Institute of Physics

    Riskaviana Kurniawati

  2. The effect of concentration and temperature on nickel extraction from laterite nickel ore using atmospheric pressure acid leaching method

    Article • January 2023, American Institute of Physics

    Riskaviana Kurniawati

  3. Direct transformation of Bangka kaolin to zeolite 4A: Effect of hydrothermal temperature

    Article • January 2020, American Institute of Physics

    Riskaviana Kurniawati