Solid-State Reduction of Oxide Nanoparticles – A New Front of Mechanochemical Technology for Advanced Materials

2018 ◽  
Keyword(s):  
Solid State ◽  
Advanced Materials ◽  
Oxide Nanoparticles ◽  
State Reduction ◽  
Solid State Reduction

scholarly journals Feasibility of nickel extraction from Indian chromite overburden by solid state reduction and smelting route

2020 ◽  
Vol 56 (2) ◽  
pp. 229-235
Author(s):  
P. Ganesh ◽  
Dishwar Kumar ◽  
S. Agrawal ◽  
Mandal Kumar ◽  
N. Sahu ◽  
...  
Keyword(s):  
Solid State ◽  
Horizontal Tube ◽  
Low Grade ◽  
State Reduction ◽  
Nickel Extraction ◽  
Reducing Atmosphere ◽  
Chromite Overburden ◽  
Solid State Reduction ◽  
Horizontal Tube Furnace ◽  
Direct Smelting

The present work demonstrates the extraction of nickel from low-grade chromite overburden by using solid state reduction and direct smelting route. Goethite & Quartz are present as major phases whereas chromite, hematite were identified as minor phases in the mineral. Solid state reduction of pellets were carried out inside a horizontal tube furnace at 1000?C, 1200?C, 1400?C for 30, 60, 90 and 120 minutes respectively with creating reducing atmosphere. Pellets of varying basicity (i.e. 0.5, 0.6, 0.7, 0.8 and 0.9) were used directly in the EAF for smelting studies. Highest percent of nickel (2%) having ~ 91% recovery were obtained in solid state reduction route for pellets which was reduced at 1400?C for 120 minute. Similar recovery (~90%) of nickel was obtained inside the ingot (0.67% Ni ) by using pellets of 0.9 basicity through smelting route. From the present investigation, it could be concluded that the solid state reduction as well as smelting routes are feasible for the recovery of nickel from low grade chromite overburden. The production of nickel pig (low grade ferronickel) could also be feasible by smelting route.

scholarly journals Solid State Reduction of Preoxidized Chromite-iron Ore Pellets by Coal

2015 ◽  
Vol 55 (4) ◽  
pp. 727-735 ◽  
Author(s):  
Jian Pan ◽  
Congcong Yang ◽  
Deqing Zhu
Keyword(s):  
Solid State ◽  
Iron Ore ◽  
State Reduction ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Solid State Reduction

scholarly journals Solid-state reduction of silica nanoparticles via oxygen abstraction from SiO4 units by polyolefins under mechanical stressing

RSC Advances ◽  
2018 ◽  
Vol 8 (63) ◽  
pp. 36338-36344 ◽  
Author(s):  
Mamoru Senna ◽  
Hirotaka Noda ◽  
Yunzi Xin ◽  
Hiroki Hasegawa ◽  
Chika Takai ◽  
...  
Keyword(s):  
Solid State ◽  
Metal Oxides ◽  
Silica Nanoparticles ◽  
Functional Properties ◽  
Oxidation Number ◽  
State Reduction ◽  
Solid State Reduction

Metal oxides with an oxidation number lower than the highest often exhibit attractive functional properties.

Synthesis of LiFePO4/C Composite Cathode Materials by Solid State Method Using Mixed Iron Sources

2013 ◽  
Vol 734-737 ◽  
pp. 2541-2544
Author(s):  
Wei Wang ◽  
Zheng Zhang ◽  
Dao Wushuang Shi ◽  
Xing Quan Liu
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Molar Ratio ◽  
Electrochemical Performances ◽  
Solid State Method ◽  
State Reduction ◽  
Solid State Reduction

The olivine LiFePO4/C composite cathode materials for lithium-ion batteries were synthesized by solid state reduction method using mixed iron sources. The effects of different temperatures on the electrochemical performance of as-synthesized cathode materials were investigated and analyzed. The crystal structures and the electrochemical performances were characterized by SEM, galvanostatical charge-discharge testing and AC-impedance, respectively. The results demonstrated that the LiFePO4/C composite cathode material synthesized at 710°C and with 1/2(FeC2O4·2H2O/Fe2O3) molar ratio of mixed iron sources has the better electrochemical performance, it has a discharge capacity of 126.1mAh/g at 0.2C and the capacity is kept at 113.8mAh/g after 20 cycles.

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