Pengaruh Suhu dan pH pada Presipitasi Elemen Berharga dari Larutan Leaching Low Grade Nikel Laterit Ore dengan menggunakan Pengendap Kalsium Karbonat

Authors

  • Surianti Surianti Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada
  • Marizka Aviana Permatasari Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada
  • Arini Nur Utami Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada
  • I Made Bendiyasa Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada
  • Indra Perdana Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada
  • Himawan Tri Bayu Murti Petrus Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada

Keywords:

Nickel, Precipitation, Recovery, CaCO3

Abstract

Nickel has an important role in non-corrosive materials formation as well as rechargeable battery.The increasing need of nickel has led the exploration of lateritic ore with low grade nickel concentration. The content of nickel in laterite ore ranges from 1.5-2.5% (weigth basis). Due to the characteristic of low grade laterite ore, hydrometallurgy is best to apply for the nickel processing technique. Nickel laterite ore that used in this study is a low grade type obtained from Pomalaa, Southeast Sulawesi. The nickel processing with hydrometallurgical technique begins with leaching of 150 grams of laterite nickel ore using 750 mL HCl 0.1 M which is followed by precipitation using CaCO3 15 % to determine the maximum percent recovery of nickel and the competition from other elements in the leachate. Based on the results  that is analyzed using Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES),  components taken from this leaching process are in the ionic  form of Fe, Al, Si, and Ni and the maximum percent recovery of nickel is obtained at 70°C at pH 6 and pH 7 with a percent recovery of 56.35%.

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Published

2019-06-17

Issue

2019: PROSIDING SNTKK 2019

Section

Articles

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