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All Journal Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal
Nuryadi Saleh
Puslitbang tekMIRA - KESDM
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology

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EKSTRAKSI EMAS DARI LUMPUR ANODA MELALUI PROSES KLORINASI BASAH DAN EKSTRAKSI PELARUT Isyatun Rodliyah; Ngurah Ardha; Nuryadi Saleh; Sariman Sariman
Jurnal Teknologi Mineral dan Batubara Vol 13, No 2 (2017): Jurnal Teknologi Mineral dan Batubara Edisi Mei 2017
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1004.373 KB) | DOI: 10.30556/jtmb.Vol13.No2.2017.170

Abstract

Percobaan mengekstraksi emas dilakukan secara selektif dari residu pelindian timbal dalam lumpur anoda melalui proses klorinasi basah, diikuti proses ekstraksi pelarut menggunakan ekstraktan pelarut organik dibutyl carbitol (DBC). Hasilnya menunjukkan bahwa pemberaian emas oleh pelindi HCl atau gas Cl2 yang dibantu oksidator H2O2 ternyata sangat efektif, bahkan menjadi lebih efektif jika menggunakan peralatan pelindian yang kedap gas. Berikutnya, proses ekstraksi pelarut terhadap larutan mengandung emas hasil klorinasi menunjukkan terbentuknya larutan organo-emas (loaded DBC) meningkat dengan meningkatnya konsentrasi DBC hingga 40% (v/v) dengan lama waktu pengadukan yang singkat, persen ekstraksi emas yang diperoleh adalah 99,31%. Akhirnya, loaded DBC direduksi untuk menghasilkan logam emas.
MAKING OF IRON NUGGET FROM CONCENTRATED IRON SAND USING MINI-SIZED ROTARY KILN Nuryadi Saleh; Siti Rochani; Hasudungan Eric Mamby
Indonesian Mining Journal Vol 20, No 1 (2017): INDONESIAN MINING JOURNAL VOL. 20 NO. 1 April 2017
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.531 KB) | DOI: 10.30556/imj.Vol20.No1.2017.183

Abstract

The availability of energy becomes a major problem in the construction of iron mineral-based smelter to produce ferrous metals in the form of pig iron. Therefore, it is necessary to develop the Krupp-Renn technology that based on coal as a reducing agent to produce pig iron in the form of nuggets. Such a technology employs a rotary kiln that consumes less energy than other furnaces. In this study, reduction process of iron sand concentrates with coal as the reductant was accomplished in a mini-sized rotary kiln (0.6 m diameter and 6 m length). The process of iron nugget making from iron sand concentrate was conducted in two (2) stages, namely oxidation and reduction processes. The former was accomplished at a temperature above 800°C for 2 (two) hours to produce hematite phase. While the later was carried out at 1250-1300°C for 6-8 hours. Both processes produced iron nuggets that contained more than 90% Fe. The highest Fe content reached 96.49% Fe. Such a nugget could meet the requirement for steel making.
EKSTRAKSI EMAS DARI LUMPUR ANODA MELALUI PROSES KLORINASI BASAH DAN EKSTRAKSI PELARUT Isyatun Rodliyah; Ngurah Ardha; Nuryadi Saleh; Sariman Sariman
Jurnal Teknologi Mineral dan Batubara Vol 13 No 2 (2017): Jurnal Teknologi Mineral dan Batubara Edisi Mei 2017
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol13.No2.2017.170

Abstract

Percobaan mengekstraksi emas dilakukan secara selektif dari residu pelindian timbal dalam lumpur anoda melalui proses klorinasi basah, diikuti proses ekstraksi pelarut menggunakan ekstraktan pelarut organik dibutyl carbitol (DBC). Hasilnya menunjukkan bahwa pemberaian emas oleh pelindi HCl atau gas Cl2 yang dibantu oksidator H2O2 ternyata sangat efektif, bahkan menjadi lebih efektif jika menggunakan peralatan pelindian yang kedap gas. Berikutnya, proses ekstraksi pelarut terhadap larutan mengandung emas hasil klorinasi menunjukkan terbentuknya larutan organo-emas (loaded DBC) meningkat dengan meningkatnya konsentrasi DBC hingga 40% (v/v) dengan lama waktu pengadukan yang singkat, persen ekstraksi emas yang diperoleh adalah 99,31%. Akhirnya, loaded DBC direduksi untuk menghasilkan logam emas.
MAKING OF IRON NUGGET FROM CONCENTRATED IRON SAND USING MINI-SIZED ROTARY KILN Nuryadi Saleh; Siti Rochani; Hasudungan Eric Mamby
Indonesian Mining Journal Vol 20 No 1 (2017): INDONESIAN MINING JOURNAL VOL. 20 NO. 1 April 2017
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol20.No1.2017.183

Abstract

The availability of energy becomes a major problem in the construction of iron mineral-based smelter to produce ferrous metals in the form of pig iron. Therefore, it is necessary to develop the Krupp-Renn technology that based on coal as a reducing agent to produce pig iron in the form of nuggets. Such a technology employs a rotary kiln that consumes less energy than other furnaces. In this study, reduction process of iron sand concentrates with coal as the reductant was accomplished in a mini-sized rotary kiln (0.6 m diameter and 6 m length). The process of iron nugget making from iron sand concentrate was conducted in two (2) stages, namely oxidation and reduction processes. The former was accomplished at a temperature above 800°C for 2 (two) hours to produce hematite phase. While the later was carried out at 1250-1300°C for 6-8 hours. Both processes produced iron nuggets that contained more than 90% Fe. The highest Fe content reached 96.49% Fe. Such a nugget could meet the requirement for steel making.
Co-Authors Hasudungan Eric Mamby Isyatun Rodliyah Ngurah Ardha Sariman Sariman Siti Rochani