Abstract
Karışık hidroksit çökeleği (MHP) nikel laterit cevherlerin hidrometalürjik işlenmesi zincirinde ortaya çıkan bir ara üründür. MHP ticari alıcı bulsa da, içerdiği safsızlıklardan dolayı ekonomik değeri düşük olan bir ara ürün sayılmaktadır. MHP’nin içerdiği nikeli diğer safsızlıklardan ayırarak ekonomik değeri daha yüksek olan ürünlere dönüştürülmesi birçok araştırmanın konusu olmuştur. Bu araştırmada, MHP örneğinin indirgenebilirliği incelenmiştir. Amaç, nikel oksidi metal nikele indirgeyerek diğer safsızlıklardan ayrıştırılması olmuştur. Bunun için MHP numunesi kalsinasyon işlemine tabi tutulduktan sonra, belirli oranda indirgeyici kömür ile karıştırılmıştır. Karışım pelet haline getirildikten sonra tüp fırında ve azot gazı altında 1050 °C’ye ısıtılmıştır. İndirgenen numunelerin mineralojik içeriği ve mikro yapısı incelenmiştir.
References
- R. Holliday, “The Separation of Nickel and Cobalt in a Mixed Sulfide Precipitate,” Metallurgical Transactions B, vol. 24B, pp. 189-192, 1993.
- C. Köse and Y. Topkaya, “Hydrometallurgical processing of nontronite type lateritic nickel ores by MHP process,” Minerals Engineering, vol. 24, pp. 396-415, 2011.
- S. Kursunoglu, Z. T. Ichla and M. Kaya, “Solvent extraction process for the recovery of nickel and cobalt from Caldag laterite leach solution: The first bench scale study,” Hydrometallurgy, vol. 169, pp. 135-141, 2017.
- C. Williams, W. Hawker and J. Vaughan, “Selective leaching of nickel from mixed nickel cobalt hydroxide precipitate,” Hydrometallurgy, vol. 138, pp. 84-92, 2013.
- Z. Ichlas, M. Mubarok, A. Magnalita, J. Vaughan and A. Sugiarto, “Processing mixed nickel cobalt hydroxide precipitate by sulfuric acid leaching followed by selective oxidative precipitation of cobalt and manganese,” Hydrometallurgy, vol. 191, p. 105185, 2020.
Abstract
Mixed hydroxide precipitation (MHP) is an intermediate product that is produced in the hydrometallurgical processing chain of nickel laterite ores. Although MHP finds buyers as a commercial product, it is considered an intermediate product with low economic value due to impurities it contains. Separating the nickel contained in MHP from other impurities and transforming it into products with higher economic value has been the subject of many researches. In this research, the reducibility of the MHP sample was examined. The aim was to reduce nickel oxide to metallic nickel thereby allowing it to be separated from other impurities. For this, after the MHP sample was calcined, it was mixed with a certain amount of reducing coal. The mixture was pelleted and heated to 1050 ° C in a tube furnace and under nitrogen gas. Mineralogical structure and microstructure of the reduced samples were investigated.
References
- R. Holliday, “The Separation of Nickel and Cobalt in a Mixed Sulfide Precipitate,” Metallurgical Transactions B, vol. 24B, pp. 189-192, 1993.
- C. Köse and Y. Topkaya, “Hydrometallurgical processing of nontronite type lateritic nickel ores by MHP process,” Minerals Engineering, vol. 24, pp. 396-415, 2011.
- S. Kursunoglu, Z. T. Ichla and M. Kaya, “Solvent extraction process for the recovery of nickel and cobalt from Caldag laterite leach solution: The first bench scale study,” Hydrometallurgy, vol. 169, pp. 135-141, 2017.
- C. Williams, W. Hawker and J. Vaughan, “Selective leaching of nickel from mixed nickel cobalt hydroxide precipitate,” Hydrometallurgy, vol. 138, pp. 84-92, 2013.
- Z. Ichlas, M. Mubarok, A. Magnalita, J. Vaughan and A. Sugiarto, “Processing mixed nickel cobalt hydroxide precipitate by sulfuric acid leaching followed by selective oxidative precipitation of cobalt and manganese,” Hydrometallurgy, vol. 191, p. 105185, 2020.
Details
| Primary Language | Turkish |
|---|---|
| Journal Section | Research Papers |
| Authors | |
| Publication Date | June 30, 2020 |
| Submission Date | February 13, 2020 |
| Acceptance Date | April 21, 2020 |
| Published in Issue | Year 2020 Volume: 3 Issue: 1 |
