Natural Radioactivity Assessment of El-Sebeaya Low Grade Phosphate Rock and Hydrochloric Acid Leaching Residue

2016 ◽  
Vol 6 (0) ◽  
pp. 26
Author(s):  
Abdel-Hakim T. Kandil ◽  
Hamed I. Mira ◽  
M Helmy ◽  
Mohamed F. Kamel
Keyword(s):  
Hydrochloric Acid ◽  
Natural Radioactivity ◽  
Phosphate Rock ◽  
Acid Leaching ◽  
Low Grade ◽  
Hydrochloric Acid Leaching ◽  
Leaching Residue

Leaching of Titanium and Silicon from Low-Grade Titanium Slag Using Hydrochloric Acid Leaching

JOM ◽  
2018 ◽  
Vol 70 (10) ◽  
pp. 1985-1990
Author(s):  
Longsheng Zhao ◽  
Lina Wang ◽  
Tao Qi ◽  
Desheng Chen ◽  
Hongxin Zhao ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Leaching ◽  
Low Grade ◽  
Titanium Slag ◽  
Hydrochloric Acid Leaching

scholarly journals Kinetics of the Leaching Process of an Australian Gibbsitic Bauxite by Hydrochloric Acid

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Aichun Zhao ◽  
Ting-an Zhang ◽  
Guozhi Lv ◽  
Wenyan Tian
Keyword(s):  
Activation Energy ◽  
Hydrochloric Acid ◽  
Acid Leaching ◽  
Low Grade ◽  
Good Theory ◽  
Alumina Production ◽  
Work Analysis ◽  
Leaching Process ◽  
Hydrochloric Acid Leaching ◽  
Kinetics Of

Gibbsitic bauxite from Australia was leached by hydrochloric acid in this work. Analysis on kinetics for the extraction of Al2O3was quantitatively studied. It was concluded that the hydrochloric acid leaching process of gibbsitic bauxite was controlled by chemical reaction. Moreover, the mechanism for the dissolution followed the equation,ln⁡k=39.44-1.66×104(1/T), with an apparent activation energy of 137.90 kJ/mol, according to the equation ofk=Ae-Ea/RT. This work aims to provide a good theory support for the process control by using a new method of alumina production from the low grade bauxite.

scholarly journals Magnesium extraction of ferronickel slag processed by alkali fusion and hydrochloric acid leaching

2021 ◽  
pp. 18-18
Author(s):  
A.B. Prasetyo ◽  
A. Khaerul ◽  
W. Mayangsari ◽  
E. Febriana ◽  
A. Maksum ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Leaching ◽  
Silica Content ◽  
Raw Material ◽  
Water Leaching ◽  
Alkali Fusion ◽  
Hydrochloric Acid Leaching ◽  
Ferronickel Slag ◽  
Leaching Residue ◽  
Leaching Condition

A research using ferronickel slag, the by-product of ferronickel production, as raw material for magnesium extraction has been carried out. It is essential to upgrade the value of ferronickel slag instead of used directly for reclamation materials. Moreover, accumulation due to increasing ferronickel demand as well as environmental contamination due to various potencially toxic elements contained in the ferronickel slag could be prevented. The general objective of this study is to utilize the ferronickel slag for magnesium materials. The specific objective is to determine the optimum conditions of magnesium extraction in the process of alkali fusion followed by hydrochloric acid leaching. A novel method for magnesium extraction from ferronickel slag was carried out through reducing silica content followed by acid leaching method. Alkali fusion of the mixture of ferronickel slag and Na2CO3 at 1000 ?C for 60 minutes followed by water leaching at 100 ?C for 60 minutes with solid to liquid percentage of 20 % were carried out to separate the silica. The leaching residue resulted from water leaching was then leached using hydrochloric aid solution to extract magnesium. The leaching temperature and time as well as the hycrochloric acid concentration were varied in the acid leaching process. Alkali fusion process proved can be generated the sodium silicate that can be separated in the water leaching to the leached solution. Meanwhile, the leaching residue was leached using hydrochloric acid to extract the magnesium. The highest magnesium extraction percentage is 82.67% that resulted from an optimum acid leaching condition with temperature of 80 ?C for 30 minutes using 2M HCl solution. Based on the kinetics study, the activation energy (Ea) for the leaching reaction of magnesium at atmospheric pressure between 32?C to 80?C is 9.44 kJ/mol and affected by diffusion and chemical reactions.

Hydrochloric acid leaching behaviour of mechanically activated Panxi ilmenite (FeTiO3)

2010 ◽  
Vol 73 (2) ◽  
pp. 173-178 ◽  
Author(s):  
Li Zhang ◽  
Huiping Hu ◽  
Liangping Wei ◽  
Qiyuan Chen ◽  
Jun Tan
Keyword(s):  
Hydrochloric Acid ◽  
Acid Leaching ◽  
Hydrochloric Acid Leaching ◽  
Leaching Behaviour

Aqueous stability of rare earth and thorium elements during hydrochloric acid leaching of roasted bastnaesite

2017 ◽  
Vol 35 (12) ◽  
pp. 1255-1260 ◽  
Author(s):  
Genghong Shuai ◽  
Longsheng Zhao ◽  
Liangshi Wang ◽  
Zhiqi Long ◽  
Dali Cui
Keyword(s):  
Rare Earth ◽  
Hydrochloric Acid ◽  
Acid Leaching ◽  
Hydrochloric Acid Leaching
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