Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Antioquia
2018
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=43057833007 https://www.redalyc.org/journal/430/43057833007/ https://www.redalyc.org/journal/430/43057833007/html/ https://www.redalyc.org/journal/430/43057833007/43057833007.epub https://www.redalyc.org/journal/430/43057833007/movil |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Reduction process of low-grade nickel laterite agglomerates using different carbonaceous materials Sandra Consuelo Díaz-Bello Oscar Jaime Restrepo-Baena Álvaro Hernando Forero-Pinilla Ingeniería reducing gas nickel minerals chemical process organic compounds Chemical properties Lateritic nickel ores need to be reduced to obtain direct reduced iron and nickel alloy. During processing of lateritic nickel ores in rotary kilns, there is a great loss of fines of ores due to degradation during transport into the reactor. These fines contain substantial amounts of nickel and iron, which could be recovered if they are agglomerated and fed back to the process. It is important to note that the processing of minerals with smaller particle sizes yields more efficient reduction processes because there is more surface area for the reducing agent to react with the mineral particles. This work involves the agglomeration of lateritic ore with a nickel content of 1.78%. Briquettes of 10 g were manufactured with the addition of various carbonaceous materials, such as coal, molasses, and coke, with a ratio of carbon/oxygen = 1. These samples were subjected to temperatures of 1100 °C to reduce the iron and nickel oxides present. The reduction percentages were obtained and the products were analyzed by X-ray diffraction (XRD), atomic absorption, thermogravimetry, and scanning electron microscopy to observe the effectiveness of the reducing agent. The highest reduction percentages (95%) were obtained when molasses was used as the reducing agent. 2018 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43057833007 https://www.redalyc.org/journal/430/43057833007/ https://www.redalyc.org/journal/430/43057833007/html/ https://www.redalyc.org/journal/430/43057833007/43057833007.epub https://www.redalyc.org/journal/430/43057833007/movil 10.17533/udea.redin.n88a07 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.88