scholarly journals Direct reduction of low grade nickel laterite ore to produce ferronickel using isothermal – temperature gradient

2017 ◽  
Author(s):  
Zulfiadi Zulhan ◽  
Ian Gibranata
Keyword(s):  
Temperature Gradient ◽  
Direct Reduction ◽  
Low Grade ◽  
Nickel Laterite ◽  
Isothermal Temperature ◽  
Nickel Laterite Ore ◽  
Laterite Ore

Biocatalytic and chemical leaching of a low-grade nickel laterite ore

2018 ◽  
Vol 115 (3) ◽  
pp. 305 ◽  
Author(s):  
Hasan Ciftci ◽  
Suleyman Atik ◽  
Fatma Gurbuz
Keyword(s):  
Sucrose Concentration ◽  
Low Grade ◽  
Optimum Conditions ◽  
Nickel Laterite ◽  
Chemical Leaching ◽  
Solid Ratio ◽  
Metals Recovery ◽  
Nickel Laterite Ore ◽  
The Difference ◽  
Laterite Ore

Nickel and cobalt recovery from a low-grade nickel laterite ore, supplied from Çaldağ deposit (Manisa, Turkey) were investigated by bio and chemical leaching processes. The fungus, Aspergillus niger was used for biocatalytic leaching experiments. The effects of parameters (solid ratio and sucrose concentration) on the biocatalytic leaching of the ore were initially tested in flasks to obtain the optimum conditions for the A. niger. Then chemical leaching was applied as a comparison to bioleaching, using organic acids (citric, oxalic, acetic and gluconic acids) as well as a mixture of acids. According the results, the maximum dissolution yield of nickel, cobalt and iron were detected respectively as 95.3%, 74.3% and 50.0% by biocatalytic processes which containing 25% (w/v) sucrose and 1% (w/v) solids. The increase in the solid ratio adversely influenced the biocatalytic activity of A. niger. Finally, further tests in reactors (v = 1 and 10 L) were performed using the optimum conditions from the flask tests. The difference in metals recovery between biocatalytic and chemical leaching was significantly important. Bioleaching produced higher Ni and Co extractions (34.3–75.6%) than chemical process.

scholarly journals Reduction of Nickel and Iron from Low-Grade Nickel Laterite Ore via a Solid-State Deoxidization Method Using Methane

2018 ◽  
Vol 59 (7) ◽  
pp. 1180-1185 ◽  
Author(s):  
Bo Li ◽  
Zhiguang Ding ◽  
Yonggang Wei ◽  
Shiwei Zhou ◽  
Hua Wang
Keyword(s):  
Solid State ◽  
Low Grade ◽  
Nickel Laterite ◽  
Nickel Laterite Ore ◽  
Laterite Ore

Mineralogy and crystal chemistry of a low grade nickel laterite ore

2012 ◽  
Vol 22 (4) ◽  
pp. 907-916 ◽  
Author(s):  
De-qing ZHU ◽  
Yu CUI ◽  
Sarath HAPUGODA ◽  
Keith VINING ◽  
Jian PAN
Keyword(s):  
Crystal Chemistry ◽  
Low Grade ◽  
Nickel Laterite ◽  
Nickel Laterite Ore ◽  
Laterite Ore

Atmospheric acid leaching mechanisms and kinetics and rheological studies of a low grade saprolitic nickel laterite ore

2016 ◽  
Vol 160 ◽  
pp. 26-37 ◽  
Author(s):  
Jennifer MacCarthy ◽  
Ataollah Nosrati ◽  
William Skinner ◽  
Jonas Addai-Mensah
Keyword(s):  
Acid Leaching ◽  
Low Grade ◽  
Nickel Laterite ◽  
Nickel Laterite Ore ◽  
Laterite Ore

Kinetics of Reduction of Low-Grade Nickel Laterite Ore Using Carbon Monoxide

2018 ◽  
Vol 49 (6) ◽  
pp. 3067-3073 ◽  
Author(s):  
Bo Li ◽  
Zhiguang Ding ◽  
Yonggang Wei ◽  
Hua Wang ◽  
Yindong Yang ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Low Grade ◽  
Nickel Laterite ◽  
Nickel Laterite Ore ◽  
Kinetics Of ◽  
Kinetics Of Reduction ◽  
Laterite Ore
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