The Modeling and Optimization of Iron Removal from …
The Modeling and Optimization of Iron Removal from Silica Sand Under Ultrasound‑Assisted Leaching by Response Surface Methodology Volkan Arslan1 Received: 24 March 2021 / Accepted: 28 June 2021
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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. Optimization of …
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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 speed, 150W ultrasound …
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What is the Best Way to Remove Silica From Water?
Its levels range from 1 part per million to more than 100 parts per million. Typically, silica exists in two forms in the water supply: (1) reactive silica; and (2) colloidal silica. Silica causes etching, scratching, and spotting on glassware and other fixtures. Removal of silica is usually done as a means of preventing wear and damage to ...
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Removal of iron from silica sand: Integrated effluent …
If the mineral surface is already contaminated, different leaching methodologies have been used for removal of impurities. In the case of iron contaminated quartz, leaching with oxalic acid (Taxiarchou et al., 1997), oxalic acid and sulphuric acids (Veglio et al., 1998), phosphoric acid (Zhang et al., 2012), microbes (Groudev and Groudeva, 1986; Strasser et al, …
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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.
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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 contaminants in …
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[PDF] Improvement of Impurities Removal from Silica Sand …
The silicon solar grade destined for the photovoltaic applications required a high purity (>99.9999%), its cycle of production consists firstly of enriching the silica by acid leaching. In the present work, we have tried to enhance the extraction rate of impurities from Algerian silica sand by means of sequential leaching process using several solvents like HF, HCl, H2SO4, …
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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 Houquan Huang and Lifeng Zhou and Tiantian Xiong}, …
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Improvement of Impurities Removal from Silica Sand by …
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 absorbance (UV …
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(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 ...
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Iron and Aluminium Removal from Algerian Silica Sand by …
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 ...
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Improvement of iron removal from silica sand using …
Hence the silica sand was subjected to our work without prior grinding. The influence of pH of the initial solution, which has been confirmed by many workers, would not be discussed in this paper. Conclusion. In conclusion, we have found the best conditions for the iron removal from the silica sand under ultrasound irradiation.
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The Modeling and Optimization of Iron Removal from …
This study aimed to remove the contaminants in quartz sand by using an eco-friendly method and to obtain high-purity quartz. For this purpose, ultrasound-assisted acid leaching was applied.
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Kinetics Analysis and Effects of Various Factors on …
The effect of reaction temperature on removal rate of iron with ultrasound-assistance is displayed in Fig. 2b. It is found that the removal rate increases with the prolonging of the …
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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}, journal={Chemical engineering …
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Improvement of Impurities Removal from Silica Sand …
Improvement of Impurities Removal from Silica Sand by Using a Leaching Process Abdelkrim Kheloufi, Yassine Berbar, Aissa Kefaifi, Sid Ali Medjahed, Fouad Kerkar ... The sand containing more than 500 ppm of iron and more than 800 ppm of aluminium is ready to be used in the industry of glass (Banza et al., 2006; Baoqi et al, 1995).
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Implementation of Sulfuric Acid Leaching for Aluminum and Iron Removal …
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 absorbance (UV …
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Innovative technology for the production of high-purity sand silica …
Veglio F et al. studied the effect of acid leaching using oxalic and sulphuric acid on iron removal [28]. Khalifa, M. et al. reported that the production of high-purity sand silica by a thermal treatment and acid leaching process [29]. Ren et al. reported that the effects of alkyl ether amine and calcium ions on fine quartz flotation [30].
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(PDF) The Modeling and Optimization of Iron Removal from …
Under the optimum conditions determined after optimization, the highest yield of iron removal was determined as 95.08%. Under the optimal parameters, the SiO2 content of …
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ResearchGate
only able to produce silica with iron oxide of 0.096 % and alumina of 0.092 while 4 N sulfuric acid can produce silica with the content of iron oxide impurity of 0.0543 %
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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 pres-ence of ultrasound. The parameters investigated were the reaction temperature,...
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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 and Fucheng Zhang}, journal={Minerals …
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Separator for Upgrading Silica Sands Optimizing the …
Minimizing the iron oxide content in silica sand ores for value addition was the target of many researchers, Banza, Quindt, and Gock (2006), Jamieson et al. (2006), Shaffer (2006), Mowla,
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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, …
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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 establish the location of the iron impurities on …
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Removal of iron from silica sand by leaching with oxalic acid
DOI: 10.1016/S0304-386X(97)00015-7 Corpus ID: 95714726; Removal of iron from silica sand by leaching with oxalic acid @article{Taxiarchou1997RemovalOI, title={Removal of iron from silica sand by leaching with oxalic acid}, author={Maria Taxiarchou and Dimis Panias and Iliana Douni and Ioannis Paspaliaris and A. Kontopoulos}, journal={Hydrometallurgy}, …
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Removal of iron from silica sand by leaching with oxalic acid
The result suggests that much work still needs to be done for the improvement of leaching and extraction selectivity as well as efficiency, and also for the development of a green recovery process with environmental benignity, low energy requirements and cost. ... ELSEVIER Hydrometallurgy46 (1997) 215-227 Removal of iron from silica sand by ...
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Reduction of Iron Content from Silica Sand by Scrubbing Process
The purpose of the present work is the development of a new industrial process for silica sand for the removal of these impurities and the production of materials suitable for a wide range of applications. In this framework, the application of mineral processing techniques, i.e. magnetic separation and flotation and chemical processing of ...
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Implementation of Sulfuric Acid Leaching for Aluminum and Iron Removal
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 for special purposes. ... Ersan Yudhapratama, Implementation of Sulfuric Acid Leaching for Aluminum and Iron Removal for Improvement of Low-Grade Silica From Quartz ...
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