Get a Quote
Welcome to our Industrio Company!
[email protected]
2012-4-1 · In this present paper, using NiCO 3 ⋅ 2Ni(OH) 2 ⋅ 4H 2 O as raw material and small iron milling balls (ϕ = 1.0–1.5 mm) as the supply of Fe source, well-ordered ellipsoidal nickel ferrite particles were directly synthesized at low temperature of ≤ 100 °C in 20 h, without the need of calcination, via ultrasonic-assisted solid–liquid reaction ball milling technique
Get Price
2013-10-1 · In this work we report a study of the magnetic behavior of ferrimagnetic oxide CoFe 2 O 4 treated by mechanical milling with different grinding balls. The cobalt ferrite nanoparticles were prepared using a simple hydrothermal method and annealed at 500 °C.The non-milled sample presented coercivity of about 1.9 kOe, saturation magnetization of 69.5 emu/g, and a remanence ratio of
Get Price
2021-2-22 · 2.3 Mechanical milling of Ni 0.5 Co 0.2 Zn 0.3 Fe 2 O 4 powder Then, the obtained powder is mechanically milled using a planetary ball mill (Fritsch Pulverisette 6) carried out at 300 rpm for 72 h. In this milling technique, the ferrite powder and zirconia grinding balls (5 and 3 mm in diameter) are used with an approximate ratio by weight of 1:3
Get Price
2013-1-15 · The MnFe 2 O 4 nanocrystals prepared by microwave-assisted ball-milling for 60 h using MnO 2 and Fe powder as the raw materials were characterized by TEM and SAED and examples were shown in Fig. 5. It is observed that the average diameter of the nanocrystals was about 20 nm. The well-dispersed nanocrystals were sphere-like particles
Get Price
2019-11-1 · 3. Nickel ferrites. Pure or doped nickel ferrites out of the nano-range size are common and frequently used in several catalytic processes. For instance, high reactivity of NiFe 2 O 4 (1 1 1) surfaces (higher that in Fe 3 O 4) is well-known; NiFe 2 O 4 is an effective metal-doped ferrite catalyst in a typical industrial process such as the water–gas shift (WGS) reaction (Kumar et al., 2013)
Get Price
2020-12-30 · As zinc ferrite obtained by the ceramic and sol-gel methods can present some residual amount of amount of ZnO and/or α-Fe 2 O 3, a portion of the powder obtained by these methods was mechanically milled to get complete homogeneity. For this goal, the powder was placed in stainless steel vial with 10:1 ball to powder weight ratio keeping
Get Price
2015-3-1 · Before milling, the Fe(OH) 3 × nH 2 O powder was heated at 105 °C for 24 h. The material prepared in this way had 99.5% Fe(OH) 3. It was confirmed by potentiometric redox titration. Mechanochemical synthesis was performed in air atmosphere in planetary ball mill Fritsch Pulverisette 5. Balls-to-powder mass ratio was 20:1
Get Price
2015-7-10 · The number and size of the balls were chosen so that a ball to powder ratio of 20 was achieved. In order to maintain an equal powder to ball mass ratio during all experiments, the vial was cleaned and reloaded exactly with 20 g of NiO, Fe 2 O 3 and Bi 2
Get Price
cess Fe 2 O 3 (it is denoted a s MZ-0). This powder was ... The ferrite powders were prepared by high energy ball-milling, and subsequently compacted under a pressure of 490MPa for 3min and
Get Price
Arsenic is one of the major pollutants and a worldwide concern because of its toxicity and chronic effects on human health. An adsorbent of Fe-FeS 2 mixture for effective arsenic removal was successfully prepared by mechanical ball milling. The products before and after arsenic adsorption were characterized with scanning electron microscopy, X-ray diffraction, Fourier transform infrared
Get Price
High-energy ball-milling of powder mixtures of zincite (ZnO) and iron (α-Fe) at different weight ratios was performed in air using a planetary ball mill with a stainless steel milling assembly. Structural and microstructural changes during the ball-milling (up to 30 h) were monitored using X-ray powder
Get Price
Ferrites with the spinel structure have a wide field of technological applications. In the present study, various ferrite (Fe 3 O 4, CoFe 2 O 4 and Ni 0.5 Zn 0.5 Fe 2 O 4) nanoparticles were synthesized by mechanochemical reaction in aqueous solution of various chlorides (FeCl 3, CoCl 2 or NiCl 2 /ZnCl 2) and NaOH in a horizontal ball mill.Structures, morphologies, compositions and magnetic
Get Price
PDF | Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was... | Find, read and cite all the research you
Get Price
2015-1-5 · After calcined at 760°C for 4 h, the obtained ferrite powders were mixed with spherical silver powder (1 μm, 99.9%) in ball mill. Then, the mixture was granulated using 5% polyvinyl alcohol
Get PriceCopyright © 2021 Industrio Mining Machinery Company All rights reserved sitemap Privacy Policy