Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
The present study reveals a cost benefit process in an open system for utilizing desert sand for preparing sodium silicate or precipitated silica. A simple alkali fusion method has been developed to prepare sodium silicate directly from sand and finally pure precipitated silica by acid precipitation. The reaction weight ratio of alkali to sand …
Details
The morphology of the synthesized silica NPs was observed using TEM (model: FEI Tecnai G2 20 Twin), which was conducted in the Centre of Excellence for Advanced Research in Fluid Flow (CARIFF). The size of silica NPs synthesized from both bench-scale, and microflow system were measured using the TEM images obtained.
Details
Preparation of PNIPAm coated hybrid silica particles. Polymer/inorganic hybrid silica particles were synthesized by radical copolymerization of VTMS silica with NIPAm monomers. The 0.015 g of KPS was added into the 10 g of water, and then the 1.35 g of ethanol solution including 0.15 g of VTMS silica particles was added into the KPS …
Details
Silica nanoparticles (SNPs) have shown great applicability potential in a number of fields like chemical, biomedical, biotechnology, agriculture, environmental remediation and even wastewater purification. With remarkably instinctive properties like mesoporous structure, high surface area, tunable pore size/diameter, biocompatibility, …
Details
Abstract and Figures. Silica aerogels have drawn considerable attention due to their low density (almost 95% of the total volume is composed of air), hydrophobicity, optical transparency, low ...
Details
Preparation of silica aerogels with low cost materials and drying condition has attracted great attention in the past years [21], [22], [23]. Industrial by-products rich in silica such as fly ash, rice husk ash and used bagasse ashes are proven to have great potential as raw material for preparing silica aerogels [24], [25], [26] .
Details
For industrial applications, a large amount of the precipitated silica or silica gels are produced by addition of sodium silicate to sulphuric acid [20]. Formation of the silica gel from sulfuric acid and sodium silicate is a cheap process with non-toxic species, while more difficult to control in comparison with alkoxides due to their high ...
Details
Many reports have reviewed the preparation of silica nanoparticles from pure organic chemicals (Wu et al. 2013a, b; Bleta et al. 2018; ... Sugarcane bagasse ash, a major by-product of the sugarcane industry, contains 40–50% of silica; acid pretreatment allows to increase amount of silica up to 80% (Ganesan et al. 2007; ...
Details
Drastic increases of silica purity were observed in samples treated with sulfuric acid and the ionic liquid at 99.6% and 99.5%, respectively. Furthermore, the ionic liquid treatment increased the surface area and pore volume by 1.9 times and 2.4 times, respectively, with respect to the sample not subjected to chemical treatment.
Details
Thiourea-containing silica gel hydrid materials (HO-SG-GPTS-TS and HE-SG-GPTS- TS) were prepared by homogeneous and heterogeneous methods for Hg(II) adsorption. Structures of HO-SG-GPTS-TS and HE-SG-GPTS-TS were confirmed by FTIR, 13C NMR, 29Si NMR, SEM, TGA, and porous structure analysis. Homogeneous preparation is …
Details
This review summarizes the methods for the preparation of iron oxide NPs, size and morphology control, and magnetic properties with recent bioengineering, commercial, and industrial applications.
Details
It is a silica rich raw material comprising of about 90-98% silica. Owing to its large ash content and the presence of sodium silicate in its ash, rice husk becomes an economical source to extract ...
Details
Silica aerogel is the archetypal thermal superinsulator and commonly applied to improve the thermal performance of on- and off-shore industrial infrastructure and buildings. Hitherto, the main products on the market are silica aerogel based blankets fabricated by casting a silica sol into a porous or fiber matrix, followed by gelation, …
Details
The silica aerogels were prepared via a sol-gel technique and ambient pressure drying by using industrial solid wastes, dislodged sludges, as raw materials. A strategy was put forward to reduce the corrosion of equipment during the drying procedure. The pore structure, hydrophobicity, and thermal insulation property of the obtained …
Details
1. Introduction. High-purity silica is a basic raw material used in cutting-edge technology and advanced equipment manufacturing, widely used in advanced technological applications such as semiconductor chips, solar cells, fibre optics, and military applications (Dai et al., 2022a, Wang et al., 2020, Xi et al., 2021, Xia et al., 2023).With the rapid …
Details
The preparation of hollow silica nanoparticles by polystyrene latex as a template was reported by Cornelissen et al. [118]. The microscopic studies on silica coated latex revealed that the thickness of shell varied between 3 and 10 nm and diameter of SNPs was between 25-40 nm.
Details
Abstract. A new type of inorganic polymer coagulant, poly-ferric aluminum silica sulfate (PFASS), was prepared by using fly ash, crap iron and waste sulfuric acid as raw materials under the ...
Details
His research interests are resource utilization, and metallurgical physical chemistry. SU Bowen,SHI Gongchu,LIAO Yalong, et al. Research Progress on Functional Materials Preparation of Silica from Industrial Solid Wastes [J]. Materials Reports, 2021, 35 (3): 3026-3032. SUN Hongjuan, ZENG Li, PENG Tongjiang.
Details
Abstract. The production of amorphous mesoporous silica nanoparticles can be achieved using sodium silicate (Na 2 SiO 3) solutions prepared from South African coal fly ash waste.The first part of this study compared two processes for the preparation of Na 2 SiO 3 solutions. The first process, hereafter called sequential acid-alkaline leaching …
Details
products, silica is believed to be the backbone of the ceramics industry [16]. Most manufacturers use silica sand, gravel, sandston e, granite, quartz, and quartzite as a silica source for the
Details
Abstract Silica micro spheres could be obtained through a semibatch sol–gel process, which was carried out by adding a solution of tetraethyl orthosilicate in ethanol into a mixture batch of KCl, ethanol, NH3•H2O, and water. Compared with other methods the semibatch sol–gel method could produce micro size silica spheres with narrow size …
Details
Owing to their ultra-low thermal conductivity, silica aerogels are promising thermal insulators; however, their extensive application is limited by their high production cost. Thus, scientists have started to …
Details
In summary, we developed an S-HGMS with coupling with acid leaching technology for recovery and preparation of high-grade silica from high‑silicon IOTs. Firstly, iron ore was mined and then processed to obtain iron concentrate and high-silica IOTs by the process of crush–grind–screening–gravity separation–magnetic separation [ 72 ].
Details
Resin-based composites have attracted widespread attention in dental restoration because of their distinguished esthetics, biocompatibility, and convenient clinical manipulation. The particle size and the dispersity of inorganic filler are crucial. In this study, size-controlled monodisperse silica nanoparticles (MSNPs) from 20 to 330 nm were efficiently prepared …
Details
Published 1 July 2011. Materials Science. Advanced Materials Research. High purity low hydroxyl synthetic fused silica glass was prepared by electric melting synthetic crystallized silica powders which were made by the process of hydrolysis, dehydration and calcination of high purity silicon tetrachloride obtained from the by-product of ...
Details
Despite its lower costs, agglomeration issues [Citation 11] prevent the scaling-up of silica use for industrial applications. Therefore, studies on the synthesis of silica nanoparticles with simple and low-cost methods have been conducted to obtain more promising properties. ... Jamal AHA, et al. Preparation of nano-silica powder from silica ...
Details
1. Introduction. Silica is one of the most studied material for the preparation of both mesoporous and microporous inorganic membranes. Silica membranes can be potentially applied in several industrial processes for efficient separations or for chemical synthesis in innovative membrane reactors (e.g., hydrogen production).
DetailsThe moisture content of solid preparation strongly affects the physical properties of preparations and drug stability. Silica is commonly used as the water or gas adsorbent (38, 39). The degree of surface silanization affects the hygroscopic efficiency and causes the different characteristics of the main particle .
DetailsSiO2 aerogel is an ultra-light nanoporous material with high transparency, low thermal conductivity, low density, low dielectric constant and high-temperature resistance. The outstanding properties contribute to the application of SiO2 aerogel for heat preservation, cold retention and thermal insulation materials. In this paper, SiO2 aerogels …
DetailsIndustrial silica sand is a by-product obtained from the industries like paint, paper, rubber etc. It has a similar property with river sand and& M sand. This study explores the effect of high content of …
Details
Preparation of lignin-based silica composite submicron particles from alkali lignin and sodium silicate in aqueous solution using a direct precipitation method. Industrial Crops and Products 2015, 74, 285-292.
Details
The synthesis of CuO catalysts supported on mesoporous silica derived from rice husks and semiconductor copper from chemical mechanical planarization (Cu-CMP) wastewater is described. These catalysts are active for the coupling reaction of CsOH with aryl iodides. Low catalyst loading (1 mol-%) without the need for ancillary ligands make these very …
Details
Silica is a main component of cordierite ceramic, in the present work, industrial solid waste was used as main silica source to prepare porous planar cordierite membranes by a solid-phase sintering process with starch as pore-forming agent. It is shown that the concentration of starch plays a critical role in the pore structure and …
Details
Different mesoporous sizes of oxides, silica, alumina, titania, and zirconia were made by changing calcination temperature, and mixed catalysts, the mixtures of the oxides and microporous zeolite, were prepared. Conversions of n-dodecane using the β zeolite-mixed catalysts were much higher than those of the Y zeolite-mixed catalysts. Using the mixed …
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE