The purpose of these experiments is to investigate the possibility to use power ultrasound to remove iron-rich coatings from the surfaces of silica sand for glass making. Experiments show that the iron-rich coating on a particle surface of silica sand with 0.18% Fe 2 O 3 was reduced to 0.11% with powerful ultrasonic an experiment set-up from ...
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.
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 …
The maximum level of the conclusion, both silica sand samples have to be aluminium removal at 100°C is higher than 36% ground to -O.6mm in order the iron removal for the sample SSL20 and approximately 15% for degree to be increased. the sample SSLI O.
The method can reduce the iron content of yellow quartz sand from 1.2% to less than 0.02%, and achieve the purpose of iron removal. Quartz sand after iron removal can be used to manufacture high-grade glass, optical glass, instrument glass, medicinal glass, high-grade ceramic glaze, frit, etc.
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 …
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 ...
Herein, a simple ecologically sound approach is investigated for iron removal from a silica sand sample obtained from the El-Zaafarana area-Egypt. The sample was subjected to a detailed ...
Iron and Aluminium Removal from Algerian Silica Sand by Acid Leaching S. Anas Boussaaa,b,∗, A. Kheloufi, N. Boutarek Zaourar and S. Bouachma Division croissance cristalline et procédés métallurgiques CCPM Centre de recherche en technologie des semi-conducteurs pour l'énergétique (C.R.T.S.E), 02 Bd Frantz Fanon BP. 140 Alger 7 …
Industrial minerals, such as silica sand, kaolin and feldspars, are often contaminated with deleterious impurities of unwanted components, particularly in the form of iron, titanium and aluminum ...
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 ...
Removal of Iron from Silica Sand: Integrated Effluent Treatment by Sulphate Reduction, Photochemical Reduction and Reverse Osmosis A.W.L. Dudeney, A. Narayanan and I.I. Tarasova T.H. Huxley School of Environment, Earth Science and Engineering, Imperial College of Science Technology and Medicine, South Kensington, …
Conclusions This work aimed to study and optimise the parameters affecting the removal of iron from silica sand with oxalic acid and has shown that: - At temperatures lower than 80°C the m a x i m u m iron extraction that can be achieved is approximately 30%. - Part of the iron mineral phases contained in silica sand can be dissolved at ...
Industrial minerals, such as silica sand, kaolin and feldspars, are often contaminated with deleterious impurities of unwanted components, particularly in the form of iron, titanium and...
for the removal of iron and other major impurities from silica sand. Mal!netic seoaration: Dry magnetic separation tests were carried out on particle size fractions +0.3 mm. For the fractions +4. ...
Zaafarana silica sand and develop a better understanding of the eectiveness of phosphoric/oxalic acid mixture for iron removal from silica sand in terms of leaching parameters. 2 Maerial t and Methods 2.1 Maerialst The silica sand samples used in this work were obtained from El-Zaafarana area, Wadi-El-Dakhl, Eastern Desert, Egypt.
The technical process of silica sand magnetic separation In wet separation process, the classified silica sand slurry is concentrated to a certain concentration by slurry disliming and storage tank, and then …
Fe2O3 content is an important index of silica sand quality. Iron removal is accompanied by the whole process of silica sand production. In the sand washing plant, washing, classification, desliming are the primary treatment of silica sand.Removing the thin-film iron and adhesive impurity minerals on the surface of silica sand will remove …
The bioleaching of iron oxides by Aspergillus niger resulted in removal of 47. 70% of the total iron in the quartz sand, and suggested that this strain has not a good ability to remove iron impurities from quartz sand in comparison with chemical leaching. The iron content decreased from 0.315% Fe 2 O 3 to 0.164% Fe 2 O 3 in the bioleached ...
Iron is one of the most stubborn impurities in quartz minerals, and the iron content partly determines the various applications of quartz. Iron can exist in quartz in the forms of iron minerals, fluid inclusions, and lattice impurities. The removal of iron and the consequent purification of quartz minerals are the key processes to obtaining high …
The results of this research can be a very significant opportunity to increase the value added of quartz sand from Sukabumi, which can enhance the quality of lowgrade silica to provide better raw materials for glass industries Keywords: beneficiation, quartz sand, leaching, aluminum removal, iron removal, silica 3/6 ( 111 ) 2021 UDC 541 DOI: 10 ...
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 …
Silicon (2017) 9:265–272 267 Fig. 2 Effect of reaction temperature on removal rate of iron under conventional stirring (a) and ultrasound-assisted leaching process (b) (hydrochloric acid concentration 12 wt%, stirring rate 300 rpm, particle size less than 250 μm, ultrasound power 180 W and frequency 45 kHz) percentage increased remarkably from 80.5 % to …
In this research work, it was attempted to reduce the iron contents (Fe2O3) in silica from Shenin silica mine. This silica sand contains 93.75% SiO2, 0.44% Fe2O3, 2.78% Al2O3, and 0.08% TiO2 and ...
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 ...
The paper gives the results of leaching, photochemical precipitation of iron from the leachates as iron(II) oxalate, microbiological precipitation of residual iron in an …
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. Equal amounts of a mixture of diluted hydrochloric and oxalic acids were used as the solvent. Response surface methodology (RSM) was used for …
The removal of iron from silica sand with oxalic acid has been studied by several workers [2–4]. The chemical reactions can be summarized as follows [2,4]: Fe 2O 3 þ6H 2C 2O
DOI: 10.1016/j.ultsonch.2010.07.006 Corpus ID: 34847111; Improvement of iron removal from silica sand using ultrasound-assisted oxalic acid. @article{Du2011ImprovementOI, title={Improvement of iron removal from silica sand using ultrasound-assisted oxalic acid.}, author={Fei-hu Du and Jing-sheng Li and Xiaoxia Li and Zhizhen Zhang}, …
