Increasing nickel from nickel slag with Na2SO4additives and palm kernel shell charcoal reductors using the pyrometallurgical method

Samantha Aziza Nurarani, Shalsabila Nandya Miryana Usman, Agus Budi Prasetyo, Ahmad Maksum, Totok Prasetyo, Reza Miftahul Ulum, Johny Wahyuadi Soedarsono

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


Indonesia has rich deposit of nickel ore and nickel slag is one of the hazardous waste from nickel smelting industries. The nickel slag has valuable elements in it, therefore further utilization is needed. In this research, the valuable elements was beneficiated by pyrometallurgical process where the palm kernel shell charcoal was used as reducing agent which considered as better option because of its environmental friendly characteristic and the functional properties resemble to fossil fuels. The pyrometallurgical process is done by heating the nickel slag size #200 mesh using furnace Carbolite CWF 11/13 with the mass ratio palm kernel shell are 5%,10%, 15%, 20% respectively and the addition of sodium sulfate 10% with reduction temperature at 1000°C for 60 min. The result of the reduction then follows with magnetic separation using Nippon magnetic dressing type 39000. The result was tested with AAS which showed the content of nickel and copper decline as the ratio of palm kernel shell charcoal increases. Based on the result, optimal parameter for nickel content is obtained by 15% palm kernel shell at 1000°C for 60 min, the optimum dosage of palm kernell shell charcoal with the addition sodium sulfate is 15% where the valuable content is obtained with 0.126%Ni and 5.13% Fe.

Original languageEnglish
Title of host publication4th International Tropical Renewable Energy Conference, i-TREC 2019
EditorsEny Kusrini, I. Gde Dharma Nugraha
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420144
Publication statusPublished - 3 Sep 2020
Event4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 - Bali, Indonesia
Duration: 14 Aug 201916 Aug 2019

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference4th International Tropical Renewable Energy Conference 2019, i-TREC 2019


  • Nickel Slag
  • Palm Kernel Shell Charcoal
  • Pyrometallurgy
  • Reduction
  • Sodium Sulfate

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