Implementation of Sulfuric Acid Leaching for Aluminum and Iron Removal …
Indonesia has very abundant reserves of silica, but progressive studies on the deposition of this material are very few, resulting in limited applications of silica. This work refers to the purification of silica from quartz sand originated from Sukabumi, Indonesia to obtain high-purity silica, which can be applied as important raw materials …
Improvement of iron removal from silica sand using …
The Modeling and Optimization of Iron Removal from Silica Sand Under Ultrasound-Assisted Leaching by Response Surface Methodology. This study aimed to remove the …
Methods used in the beneficiation of silica sand and …
In this respect, there are various methods to remove iron compounds and other impurities from silica sand. This study presents alternative methods for silica sand beneficiation and explains ...
High efficiency iron removal from quartz sand using …
Phosphoric acid (H 3 PO 4) was firstly used to remove iron impurities at very low concentrations from quartz sand under ultrasound irradiation with higher efficiency, …
(PDF) Improvement of Impurities Removal from Silica Sand …
In our days obtaining silica sand with very high purity is a primordial stage in photovoltaic industry. The effects of acids on the removal of impurity from silica sand have been studied using leaching acids: mixture composed of HF/HCl/H 2 O with a volume composition of (1:7:24).The obtained material was characterized using Ultraviolet-Visible …
Iron removal from extremely fine quartz and its kinetics
The iron impurity removal from extremely fine quartz and its kinetics have been explored. The investigation reveals that the product layer diffusion in heterogeneous reaction system is the rate-control step and the activation energy was found to be 45.37 kJ/mol.But the mechanism seems to have a trend towards homogeneous reaction …
Improvement of Low-Grade Silica Sand Deposits In
There is no shortage of high-grade silica sand deposits in Saudi Arabia, but they are located about 1000 km from Jeddah industrial city. Therefore, the transportation cost becomes formidable. There are several low-grade silica sand deposits near Jeddah, but they require upgrading to provide raw material acceptable for the glass industry. This …
Efficient Iron Removal to Produce High Purity Quartz Sand …
The one of major impurities in quartz is iron, which has a great impact on the properties of the material and should be be strictly removed in many applications. In this study, a low-energy consumption, simple, fast processing is introduced by combination microwave treatment with different acid leaching. Selective heating of microwaves is …
The Modeling and Optimization of Iron Removal from Silica …
For this purpose, a mixture of hydrochloric and oxalic acids was used and the effects of variable parameters such as leaching temperature, leaching time, acid …
Improvement of iron removal from silica sand using …
This paper deals with the removal of iron from silica sand in aqueous oxalic acid, in the absence and presence of ultrasound. The parameters investigated were the reaction temperature, stirring speed, ultrasound power, acid concentration and reaction time. The optimum conditions for the maximum removal of 75.4% of iron with ultrasound were …
Figure 3 from Improvement of Impurities Removal from Silica Sand …
Corpus ID: 102484117; Improvement of Impurities Removal from Silica Sand Using a Leaching Process @article{Kheloufi2011ImprovementOI, title={Improvement of Impurities Removal from Silica Sand Using a Leaching Process}, author={Abdelkrim Kheloufi and Yacine Berbar and Aissa Kefaifi and Sidali Medjahed and Fouad Kerkar}, …
(PDF) Improvement of iron removal from silica sand using …
The optimum conditions for the maximum removal of 75.4% of iron with ultrasound were determined as follows: reaction temperature, 95°C; stirring speed, 500 …
Implementation of sulfuric acid leaching for aluminum and iron removal …
The aim of our research is to improve low-grade silica from quartz sand by removing impurities, especially aluminum and iron removal, using sulfuric acid leaching. In order to achieve the aim, the effect of reaction time and sulfuric acid concentration on the leaching process was investigated.
Improvement of iron removal from silica sand using …
This work reports the use of ultrasound-assisted oxalic acid leaching for removal of iron and its comparison with the conventional magnetic stirring method. …
Removal of iron from silica sand by surface cleaning using …
DOI: 10.1016/J.MINENG.2006.10.005 Corpus ID: 98660649; Removal of iron from silica sand by surface cleaning using power ultrasound @article{Zhao2007RemovalOI, title={Removal of iron from silica sand by surface cleaning using power ultrasound}, author={Hongli Zhao and D. X. Wang and Y. X. Cai …
Removal of iron from silica sand by leaching with oxalic acid
The removal of iron from silica sand with oxalic acid has been studied under various experimental conditions in order to optimise the process parameters and reach a high degree of iron removal at minimum operating cost. The parameters studied were: temperature, pH of the solution, oxalate concentration, Ar purging, and ferrous …
An efficient method combining thermal annealing and …
The silica used in this work is a natural one from the region of Siliana in Tunisia. Prior to thermal annealing, silica was dipped in an acid mixture solution, HCl:HNO 3 (AS1) with a volume proportion of 2:1 to remove metallic impurities located at the surface of silica grains. Then it was abundantly rinsed with deionized water and dried under …
how to remove iron ore from silica sand
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Iron Removal Process for High-Purity Silica Sands …
In this article, a leaching study, carried out on a quartz sample to obtain high-purity silica sands, has been presented. A leaching process by using oxalic acid to remove low iron content from the ore under study and to obtain a material suitable for fiber optic production has been evaluated. A characterization study has been carried out to …
View of Implementation of sulfuric acid leaching for aluminum and iron
Return to Article Details Implementation of sulfuric acid leaching for aluminum and iron removal for improvement of low-grade silica from quartz sand of Sukabumi, Indonesia Download Download PDF Implementation of sulfuric acid leaching for aluminum and iron removal for improvement of low-grade silica from quartz sand of Sukabumi
Improvement of Impurities Removal from Silica Sand …
sand in order to show the improvement of impurities removal from silica sand using a leaching process (fig. 6) . The results of (BEI) analysis (fig.6) come to consolidate again the DRX results. We can
Improvement of iron removal from silica sand using …
This paper deals with the removal of iron from silica sand in aqueous oxalic acid, in the absence and presence of ultrasound. The parameters investigated were the reaction temperature, stirring speed, ultrasound power, acid concentration and reaction …
High efficiency iron removal from quartz sand using phosphoric …
DOI: 10.1016/J.MINPRO.2012.09.001 Corpus ID: 95362913; High efficiency iron removal from quartz sand using phosphoric acid @article{Zhang2012HighEI, title={High efficiency iron removal from quartz sand using phosphoric acid}, author={Zhizhen Zhang and Jing-sheng Li and Xiaoxia Li and …
(PDF) Improvement of Impurities Removal from Silica Sand …
RSM in conjunction with CCRD was used to study the removal of iron from silica sand using oxalic acid in terms of three operating parameters (Contact time, Acid concentration, Temperature). The model F values indicated the high significance of the design, also the good agreement between the Actual and the predicted results (R 2 > 0.9) indicated ...
Improvement of iron removal from silica sand using …
This paper deals with the removal of iron from silica sand in aqueous oxalic acid, in the absence and presence of ultrasound. The parameters investigated were the reaction …
Improvement of Iron Removal From Silica Sand Using
This study investigated the use of ultrasound to improve the removal of iron from silica sand using oxalic acid leaching. The researchers optimized various process parameters including reaction temperature, stirring speed, ultrasound power, acid concentration, and reaction time. Under the optimum conditions of 95°C temperature, 500 rpm stirring …
Five efficient methods of removing iron from silica sand
Iron removal by acid leaching separation is based on the fact that quartz is insoluble in acid (except H, impurity minerals containing Fe can be dissolved by acid solution), so that the purpose of removing iron-bearing minerals from quartz sand can be achieved. The acid leaching method can not only remove iron-bearing minerals from quartz sand, but also …
Improvement of iron removal from silica sand using
The presence of iron compounds in silica sand is prohibitive to the production of optical fibers, glass, ceramics and refractory materials. Considerable efforts have been devoted …
(PDF) The Modeling and Optimization of Iron Removal from Silica Sand
Kinetics of iron removal from quartz under the ultrasound-assisted leaching was explored in this paper, and the effects of temperature, leaching time, stirring speed and ultrasonic input power on ...
Iron and Aluminium Removal from Algerian …
Quartz sand with SiO 2 grade between 96 and 99% and Fe 2 O 3 content less than 0.5% is used in industries such as glass, ceramics, casting sand, cement products, chemical industry, filtration ...