APPLICATION OF REVERSE FLOTATION METHOD FOR THE UPGRADING OF IRON OXIDE CONTAINED IN CALCINE LATERITE ORE

Authors

  • PRAMUSANTO PRAMUSANTO R&D Centre for Mineral and Coal Technology
  • NURYADI SALEH R&D Centre for Mineral and Coal Technology
  • MUTA’ALIM MUTA’ALIM R&D Centre for Mineral and Coal Technology
  • YUHELDA DAHLAN R&D Centre for Mineral and Coal Technology
  • Muchtar Aziz R&D Centre for Mineral and Coal Technology

DOI:

https://doi.org/10.30556/imj.Vol11.No1.2008.600

Keywords:

reverse flotation, iron laterite, transforms limonite/goethite, amine thioacetate

Abstract

Reverse flotation was adopted for Indonesian iron-rich laterite ore from Pomalaa to float siliceous minerals in the separation of iron mineral. Nickel siliceous mineral such as garnierite is one of the silicate minerals containing in laterite ore that are undesirable and must be eliminated from the ore before used as raw material for iron making industry. Calcine laterite product was obtained from reduction process in rotary kiln for 3 hours at 900 °C by transforming limonite/goethite to magnetite containing Fe 45.6 % and Ni 1.16 %. The reverse flotation tests were focused on the separation of iron mineral from nickel mineral using amine complex, ARMAC-C, a commercially available amine thioacetate as collector.

 

Influences of pulp pH, dosages of collector amine complex and frother, and also solid percent of pulp on the reverse flotation of calcine laterite ore were investigated. The optimal condition was obtained at pH 10, collector 1000 g/t and frother 25 g/t at solid percent of 30%. The test results show that after one-stage rough reverse flotation the concentrate had Fe and Ni grades of 77.5% and 0.5% with recoveries of 57.3% and 33.7%, respectively. Therefore, it is possible to use iron-rich lateritic ore to produce magnetic concentrates by using magnetizing roasting followed by reverse iron flotation.

References

Castro, H., S. Flores, and J. A. Morisan, 1985, Froth Flotation, Proc. of the 2nd Lat.-.Amer. Con. on Froth Flotation Conception, Chile, 19- 23 August, Elsevier.

Cui, Z., Q. Liu, and T.H. Etsell, 2002, Magnetic properties of ilmenite, hematite and oilsand minerals after roasting, Min. Eng. 15, 1121- 1129.

Direktorat Industri Logam, Departemen Perindustrian, 2007, Pengembangan Industri Baja Hulu Berbasis Sumber Daya Alam Lokal, Focus Group Discussion, 14 Agustus (unpub- lished), Jakarta.

Kumar, V., Rao D.S, Rao S.S., More P.,and Raju G.B., 2005, Semi-commercial Scale Studies using Flotation Column and Dual Extraction Column on Iron Ores of Goa, India, J. of Min.

& Mat.Char. & Eng., Vol 4, No. 2. pp 113-124.

Pearson, B. and K.Thambimuthu, 2003, Clean Coal Technology Roadmap, CCTRM, www.nrcan.gc.ca.

Pramusanto, and N.Saleh, 2006, Laterite reduc- tion by coal, gas mixture of CO/CO2, and CH4, Proc. The 4th Int. Con. on the Sci. and Tech. of Ironmaking (ICSTI ’06), Nov. 26-30, Osaka, Japan, 593-596.

Purwanto, H., B.Jeyadevan, R.Takahashi, and J-

i. Yagi, 2003, Recovery of magnetite from leached laterite-residue by magnetic separa- tion, ISIJ Int., Vol.43 (2003), No.12, 1919- 1926.

Purwanto, Hadi, 2003, Study the Utilization of In- donesian Laterite Ore for Ironmaking, Ph.D. Thesis, Tohoku University, Sendai, Japan.

Rianes, Mega, 2008, Perilaku Bijih Nikel Laterit dari Pomalaa Sulawesi Tenggara dalam Percobaan Flotasi dengan Kolektor ARMAC-T, Skripsi, Jurusan Teknik Pertambangan, Fakultas Teknik Universitas Islam Bandung.

Setiawan B., B. Pardianto, and D.N. Sunuhadi, 2004, Peluang Pemanfaatan Bijih Besi di In- donesia, Min. & Ener. Vol.2/5, Dec., 45-50.

Song,S., S.Lu, and A. Lopez-Valdivieso, 2002, Magnetic separation of hematite and magne- tite fines as hydrophobic flocs from iron ores, Min. Eng. 15, 415-422.

Wills, B.A., 1992, Mineral Processing Technol- ogy (5th Edition) Pergamon Press, Oxford.

Youssef, M.A. and M.B.Morsi, 1998, Reduction roast and magnetic separation of oxidized iron ores for the production of blast furnace feed, Canadian Metallurgical Quarterly, Vol.37, No.5, 419-428.

Yusuf, R., A. Sutanto, and A.Hendarto, 2003, Karakteristik bijih besi laterit sebelum dan sesudah proses reduksi, Pros. Kol. Energi dan Sumber Daya Mineral, 18 Dec., 216.

Downloads

Issue

Vol. 11 No. 1 (2008): INDONESIAN MINING JOURNAL Vol. 11 No. 1 February 2008

Section

ARTICLE

License

Indonesian Mining Journal provides immediate open access to its content on the principle that making research freely available to the public to supports a greater global exchange of knowledge.


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Most read articles by the same author(s)

<< < 1 2 3