scholarly journals Nickel and cobalt losses from laterite ore after the sulfation-roasting-leaching processing

2020 ◽  
Vol 9 (6) ◽  
pp. 12404-12415
Author(s):  
Pedro Paulo Medeiros Ribeiro ◽  
Larissa Chiesa Mendonça de Souza ◽  
Reiner Neumann ◽  
Iranildes Daniel dos Santos ◽  
Achilles Junqueira Bourdot Dutra
Keyword(s):  
Sulfation Roasting ◽  
Laterite Ore

Spinel ferrite transformation for enhanced upgrading nickel grade in laterite ore of various types

2021 ◽  
Vol 163 ◽  
pp. 106795
Author(s):  
Jian-ming Gao ◽  
Wenjie Li ◽  
Shujia Ma ◽  
Zongyuan Du ◽  
Fangqin Cheng
Keyword(s):  
Spinel Ferrite ◽  
Ferrite Transformation ◽  
Nickel Grade ◽  
Laterite Ore

Selective Leaching Nickel from the Pre-Reduced Limonitic Laterite Ore at Atmospheric Pressure

2012 ◽  
Vol 560-561 ◽  
pp. 494-498
Author(s):  
Yong Feng Chang ◽  
Chuan Lin Fan ◽  
Bin Chuan Li ◽  
Xiu Jing Zhai ◽  
Ting An Zhang
Keyword(s):  
Atmospheric Pressure ◽  
Ph Value ◽  
Test Results ◽  
Selective Leaching ◽  
Nickel Extraction ◽  
Extraction Degree ◽  
Leaching Solution ◽  
Novel Method ◽  
Leaching Condition ◽  
Laterite Ore

In this paper a novel method for selective leaching nickel from pre-reduced laterite ore at atmospheric pressure was reported. The reduced calcine was leached in thin acid liquor to liberate the nickel and iron together firstly. By properly controlling the leaching condition, the leached iron ion could hydrolyze as goethite precipitate and regenerate the acid consumed in the leaching procedure. Finally, the nickel is selectively extracted into the leaching solution. The main factors in the leaching process, such as reduction degree of the laterite ore, acidity of the leaching solution were investigated as influence on the nickel extraction. The test results showed that selectively leaching of nickel could be achieved with an extraction degree up to 90% by reducing most of the iron in the lateritic ore to wuestite and controlling the pH value of the leaching solution below 2.5.

A Proposed Procedure for Identifying the Predominant Heat Transfer Modes Along the Length of Large Nickel Laterite Ore Rotary Kiln: Experimental Validation in an Industrial Process

2021 ◽  
Author(s):  
Janneth Ruiz ◽  
Antonio Ardila ◽  
Bernardo Rueda ◽  
Jorge Echeverri ◽  
Daniel Quintero ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Industrial Process ◽  
Particle Model ◽  
Zone Length ◽  
Average Surface ◽  
Bed Temperature ◽  
Mineral Oxides ◽  
Rotary Kilns ◽  
Physical And Chemical ◽  
Laterite Ore

Abstract Nickel is essential in many consumer, industrial, military, transport, aerospace, marine, and architectural products due to its outstanding physical and chemical properties. This work focuses on the calcination and pre-reduction of laterite nickel ore to produce ferronickel. Ferronickel is an alloy containing nickel (about 30% wt.) and iron used for manufacturing stainless steel. Calcination and pre-reduction entail removing chemically bonded water from partially dried ore and removing oxygen from mineral oxides in the calcine. Here we combine a proprietary database with operation data of two rotary kilns and model predictions of Mean Residence Time, shell losses, intraparticle evaporation, and intraparticle temperature distribution. The kilns feature notable differences in length, inclination angle, excess air, but the predicted Mean Residence Times are similar. A fitted profile of experimental solids bed temperature represented particles surface temperature. The model considered slab-like mineral particles with surface-to-center distances of 13, 25, and 38 mm. Results show notable differences in the drying zone length and average surface-to-center temperature differences. Surface-to-center distances higher than 25 mm result in average surface-to-center temperature differences higher than 80°C. The following steps are improvements in the particle model and its coupling with the gas and wall temperature profiles.

Kinetics on roasting reduction of limonitic laterite ore using coconut-charcoal and anthracite reductants

2019 ◽  
Vol 132 ◽  
pp. 126-133 ◽  
Author(s):  
Himawan Tri Bayu Murti Petrus ◽  
Andreas Diga Pratama Putera ◽  
Edi Sugiarto ◽  
Indra Perdana ◽  
I Wayan Warmada ◽  
...  
Keyword(s):  
Coconut Charcoal ◽  
Laterite Ore

scholarly journals Recovery of Copper from Copper Sulfide Concentrate by Sulfation Roasting

2015 ◽  
Vol 04 (02) ◽  
pp. 9-13 ◽  
Author(s):  
Yaming Zhao ◽  
Yanan Hou ◽  
Yuguo Cui ◽  
Hongwei Liang ◽  
Luanning Li
Keyword(s):  
Copper Sulfide ◽  
Sulfation Roasting ◽  
Sulfide Concentrate

scholarly journals Key Metallurgical Parameters of Fe-Ni Production During 1984–1997 and 2007–2017 at the Ferronickel Smelter in Drenas

2020 ◽  
Vol 67 (2) ◽  
pp. 73-77
Author(s):  
Zarife Bajraktari-Gashi ◽  
Muharrem Zabeli ◽  
Behram Halilaj
Keyword(s):  
Moisture Content ◽  
Casting Process ◽  
The Philippines ◽  
High Moisture Content ◽  
High Moisture ◽  
Nickel Ores ◽  
Iron Nickel ◽  
Rotary Kilns ◽  
The Republic ◽  
Laterite Ore

AbstractDuring 1984–1997, the ferronickel plant in Drenas used iron-nickel ore from the mines of the Republic of Kosovo: Glavica and Çikatove (Dushkaje and Suke) mines. However, during the years 2007–2017, when the plant started operating from the cessation of production, which was from 1998 to 2007, some types of iron-nickel ores from different countries began to be used, starting from iron-nickel ores from Kosovo, iron-nickel ores from Albania, ores from Indonesia, ores from the Philippines, ores from Guatemala, ores from Turkey and ores from Macedonia. The ore composition, however, is mainly oxide-laterite ore. Iron-nickel ores in the plant are characterised by high moisture content, a very important factor influencing the process of scraping the charge in rotary kilns and presenting in general. Among the iron-nickel ore used in the ferronickel plant, the ores from Albania are characterised due to their low moisture content when compared with the other ores as well as the high content of iron oxides, which affect the temperature rise inside the furnaces, as the iron ores play an important role in the pre-casting process in rotary kilns.

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