scholarly journals Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation

Metals ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 88 ◽  
Author(s):  
Hongming Long ◽  
Tiejun Chun ◽  
Zhanxia Di ◽  
Ping Wang ◽  
Qingmin Meng ◽  
...  
Keyword(s):  
Iron Powder ◽  
Magnetic Separation ◽  
Metallic Iron ◽  
Carbothermic Reduction ◽  
Pyrite Cinder

Reduction of Nitroarenes to Aromatic Amines with Nanosized Activated Metallic Iron Powder in Water

Synthesis ◽  
2003 ◽  
pp. 2001-2004 ◽  
Author(s):  
Lei Wang ◽  
Pinhua Li ◽  
Zongtao Wu ◽  
Jincan Yan ◽  
Min Wang ◽  
...  
Keyword(s):  
Iron Powder ◽  
Metallic Iron ◽  
Aromatic Amines

scholarly journals A Study On The Fabrication Of Iron Powder From Forging Scale Using Hydrogen

2015 ◽  
Vol 60 (2) ◽  
pp. 1547-1549 ◽  
Author(s):  
S.M. Shin ◽  
D.-W. Lee ◽  
J.-Y. Yun ◽  
CH.-Y. Kang ◽  
J.-P. Wang
Keyword(s):  
Partial Pressure ◽  
Iron Powder ◽  
Metallic Iron ◽  
Hydrogen Partial Pressure ◽  
Hydrogen Gas ◽  
Temperature Reaction ◽  
Reduction Of Iron ◽  
Partial Pressures ◽  
Mean Size ◽  
The Mean

Abstract This study was conducted to investigate the effect of hydrogen content, temperature, reaction time for the reduction of forging scale which is mainly composed of hematite (Fe2O3). All reductive reactions were performed over the temperature range of 700 to 1200°C as well as 0.1 to 1 atm of hydrogen partial pressures. The results showed that the mechanism for the reduction of iron oxides using hydrogen gas was not a simple process, but proceeded in multiple reduction stages thermodynamically. The iron oxide was almost completely reduced to metallic iron powder with 91 wt.% of iron content in the forging scale at 0.1 atm of hydrogen partial pressure. The content of iron was however found to be increased with increasing hydrogen partial pressure from 0.1 to 1 atm with regardless of temperatures. The metallic iron powder was obtained with the mean size of 100 μm and more porous structure was observed.

scholarly journals Removal of Metallic Iron from Reduced Ilmenite by Aeration Leaching

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1020
Author(s):  
Qiuyue Zhao ◽  
Maoyuan Li ◽  
Lei Zhou ◽  
Mingzhao Zheng ◽  
Ting’an Zhang
Keyword(s):  
Iron Content ◽  
Metallic Iron ◽  
Carbothermic Reduction ◽  
Room Temperature ◽  
Total Iron ◽  
Total Iron Content ◽  
Tio2 Content ◽  
Synthetic Rutile ◽  
Ilmenite Concentrate ◽  
Hcl Solution

Aeration leaching was used to obtain synthetic rutile from a reduced ilmenite. The reduced ilmenite, obtained from the carbothermic reduction of ilmenite concentrate in a rotary kiln at about 1100 °C, contained 62.88% TiO2 and 28.93% Metallic iron. The particle size was about 200 μm and the size distribution was uniform. The effects of NH4Cl and HCl concentrations, stirring speed, and aeration leaching time on the extent of removal of metallic iron from the reduced ilmenite were studied at room temperature. The results revealed that aeration leaching is feasible at room temperature. When using the NH4Cl system, the metallic iron content was reduced to 1.98% in synthetic rutile, but the TiO2 content only reached 69.16%. Higher NH4Cl concentration did not improve the leaching. Using 2% NH4Cl with 3% HCl, we were able to upgrade the synthetic rutile to 75%, with a metallic iron content as low as 0.14% and a total iron content of about 4%. Synthetic rutile could be upgraded to about 90% using HCl solution alone. HCl and NH4Cl are both effective on the aeration leaching process. However, within the scope of this experiment, hydrochloric acid is more efficient in aeration leaching.

Sign in / Sign up

Export Citation Format

Share Document