Randhawa, N S and Jana, R K and Das, N N (2012) Silicomanganese production utilising low grade manganese nodules leaching residue. Mineral Processing and Extractive Metallurgy (Trans. IMM C) (0.667). pp. 1-9.
![[thumbnail of SiMn-MPEM.pdf]](http://eprints.nmlindia.org/style/images/fileicons/application_pdf.png "SiMn-MPEM.pdf")
PDF
SiMn-MPEM.pdf
Restricted to NML users only. Others may use ->
Download (385kB) | Request a copy
Abstract
The use of washed leached manganese nodules residue (WMNR), generated by reductive roasting ammoniacal leaching of manganese nodule, for production of standard grade
silicomanganese (Si16Mn63), via carbothermic reduction smelting in electric arc furnace was described. The lower Mn/Fe ratio of WMNR was improved by its blending with Mn ore. Various parameters, such as Mn/Fe, Mn/Si, coke addition, CaF2 addition and holding time, were varied to
optimise process to produce the desired grade of silicomanganese. Under optimised set of conditions, a charge mix with Mn/Fe>3?5 and Mn/Si>2?5 at basicity CaOzMgO)/SiO2} of 0.2 and R ratio {(CaOzMgO)/Al2O3} of 1?8 produced the standard grade silicomanganese in 15 min holding time with .77% Mn recovery. Excess coke (110% of stochiometric amount) in the smelting and CaF2 additions to the tune of 4 wt-% (WMNR–Mn ore blend) during the holding time, improved the metallic yield and manganese recovery.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Pyrometallurgy, Reduction, Leached manganese nodule residue, Silicomanganese, Smelting |
| Subjects: | Metallurgy > Waste Utilization Metallurgy > Alloys and Compounds > Iron Alloys Metallurgy > Waste Recycling Metallurgy > Extractive Metallurgy > Pyrometallurgy |
| Divisions: | Metal Extraction and Forming |
| Depositing User: | Dr. Navneet Singh Randhawa |
| Date Deposited: | 15 Feb 2013 11:20 |
| Last Modified: | 03 Sep 2026 08:11 |
| URI: | http://eprints.nmlindia.org/id/eprint/6409 |
Actions (login required)
- View Item