scholarly journals Decomposition of Zinc Ferrite in Zinc Leaching Residue by Reduction Roasting

2012 ◽  
Vol 16 ◽  
pp. 705-714 ◽  
Author(s):  
Ning Peng ◽  
Bing Peng ◽  
LiYuan Chai ◽  
Wei Liu ◽  
Mi Li ◽  
...  
Keyword(s):  
Zinc Ferrite ◽  
Reduction Roasting ◽  
Leaching Residue

Recovery of iron from zinc leaching residue by selective reduction roasting with carbon

2012 ◽  
Vol 237-238 ◽  
pp. 323-330 ◽  
Author(s):  
Mi Li ◽  
Bing Peng ◽  
Liyuan Chai ◽  
Ning Peng ◽  
Huan Yan ◽  
...  
Keyword(s):  
Selective Reduction ◽  
Reduction Roasting ◽  
Leaching Residue

Study on Preparation Process of Zinc Ferrite

2011 ◽  
Vol 201-203 ◽  
pp. 1736-1740 ◽  
Author(s):  
Shao Jian Ma ◽  
Gui Fang Wang ◽  
Jin Lin Yang ◽  
Shao Juan Que ◽  
Li Qun Tang ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
Zinc Ferrite ◽  
New Technologies ◽  
Preparation Process ◽  
Zinc Recovery ◽  
Pure Zinc ◽  
End Point ◽  
Reaction Characteristics ◽  
Leaching Residue ◽  
Sulfide Concentrate

Zinc ferrite is usually formed during the roasting of zinc sulfide concentrate with high content of iron and reduces zinc recovery during the leaching of zinc calcine. Because it is difficult to find pure zinc ferrite in nature ore resources or in chemicals market, which impedes the investigation of the reaction characteristics of zinc ferrite and the seek of new technologies for zinc ferrite dissolution, so it is of significance to obtain relatively pure zinc ferrite for further research on zinc calcine leaching. This article investigated the preparation process of zinc ferrite based on the dissolution characteristics of a zinc calcine with 19.38% iron and put forward a method to judge the reaction end point during the leaching of zinc calcine to produce zinc ferrite. The results show that the product of zinc ferrite could be prepared through recovering the leaching residue during leaching the zinc calcine under the initial H2SO4 concentration equal to or larger than 160g/L, and that the leaching end point can be judged by comparing the experimental curve of Zn leaching with the zinc theoretical dissolvability curve.

scholarly journals Preparation of Zinc Oxide and Zinc Ferrite from Zinc Hypoxide by Wet Process and Electrochemistry

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1133
Author(s):  
Hui Li ◽  
Yutian Fu ◽  
Jinglong Liang ◽  
Le Wang ◽  
Hongyan Yan ◽  
...  
Keyword(s):  
Zinc Ferrite ◽  
Removal Rate ◽  
Wet Process ◽  
Reduction Potentials ◽  
Electrochemical Testing ◽  
Zinc Carbonate ◽  
Leaching Solution ◽  
Leaching Residue ◽  
Ammonia Leaching ◽  
Copper Lead

With the increase of zinc resource consumption, the recovery and utilization of zinc resources in zinc suboxide has become one of the current research hotspots. In this study, the electrochemical method was used to remove the impurities in the zinc leaching night and enrich the zinc ferrite in the ammonia leaching residue for the solution and ammonia leaching slag after the ammonia leaching of zinc hypoxide, in order to realize the comprehensive utilization of the essence of zinc immersion night and new resources. The results showed that the reduction potentials of copper, lead, cadmium, and zinc in the ammonia leaching solution were analyzed by electrochemical testing methods to be −0.76 V, −0.82 V, −0.94 V, and −1.3 V, respectively. Through constant potential electrodeposition, the removal rate of copper, lead, cadmium. The removal rate of cadmium is 98.73%, and the removal rate of lead and copper is more than 99%. The purified ammonia leaching solution is evaporated at 90 °C for 25 min to obtain basic zinc carbonate. The purity of ZnO obtained after calcination at 500 °C for 120 min is 96.31%. The ammonia leaching residue was pickled with 3 mol·L−1 acetic acid for 30 min to effectively remove PbCO3, and then magnetic separation was carried out with a current intensity of 1.4 A. The final zinc ferrite content was 83.83%.

Magnesium-zinc ferrite with copper substitutions

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-405-Pr2-408
Author(s):  
E. Rezlescu ◽  
N. Rezlescu ◽  
P. D. Popa ◽  
M. L. Craus ◽  
L. Rezlescu
Keyword(s):  
Zinc Ferrite

A Sensitive Visible Light Photodetector Using Cobalt-Doped Zinc Ferrite Oxide Thin Films

2021 ◽  
Vol 13 (5) ◽  
pp. 6411-6420
Author(s):  
Pin-Hung Chung ◽  
Chia-Tung Kuo ◽  
Tzu-Hsuan Wang ◽  
You-Yan Lu ◽  
Chao-I Liu ◽  
...  
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Zinc Ferrite ◽  
Oxide Thin Films

scholarly journals Tracking of Zinc Ferrite Nanoparticle Effects on Pea (Pisum sativum L.) Plant Growth, Pigments, Mineral Content and Arbuscular Mycorrhizal Colonization

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 583
Author(s):  
Reda E. Abdelhameed ◽  
Nagwa I. Abu-Elsaad ◽  
Arafat Abdel Hamed Abdel Latef ◽  
Rabab A. Metwally
Keyword(s):  
Pisum Sativum ◽  
Plant Growth ◽  
Zinc Ferrite ◽  
Crop Improvement ◽  
Nanocrystalline Structure ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Transmission Electron ◽  
Agricultural Applications ◽  
The Impact

Important gaps in knowledge remain regarding the potential of nanoparticles (NPs) for plants, particularly the existence of helpful microorganisms, for instance, arbuscular mycorrhizal (AM) fungi present in the soil. Hence, more profound studies are required to distinguish the impact of NPs on plant growth inoculated with AM fungi and their role in NP uptake to develop smart nanotechnology implementations in crop improvement. Zinc ferrite (ZnFe2O4) NPs are prepared via the citrate technique and defined by X-ray diffraction (XRD) as well as transmission electron microscopy for several physical properties. The analysis of the XRD pattern confirmed the creation of a nanocrystalline structure with a crystallite size equal to 25.4 nm. The effects of ZnFe2O4 NP on AM fungi, growth and pigment content as well as nutrient uptake of pea (Pisum sativum) plants were assessed. ZnFe2O4 NP application caused a slight decrease in root colonization. However, its application showed an augmentation of 74.36% and 91.89% in AM pea plant shoots and roots’ fresh weights, respectively, compared to the control. Moreover, the synthesized ZnFe2O4 NP uptake by plant roots and their contents were enhanced by AM fungi. These findings suggest the safe use of ZnFe2O4 NPs in nano-agricultural applications for plant development with AM fungi.

Engineering zinc ferrite nanoparticles in a hierarchical graphene and carbon nanotube framework for improved lithium-ion storage

2021 ◽  
Vol 588 ◽  
pp. 346-356
Author(s):  
Shouchun Bao ◽  
Qingke Tan ◽  
Xiangli Kong ◽  
Can Wang ◽  
Yiyu Chen ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Zinc Ferrite ◽  
Lithium Ion ◽  
Ferrite Nanoparticles ◽  
Ion Storage

Reduction roasting and bioleaching of a limonite ore

2021 ◽  
Vol 200 ◽  
pp. 105554
Author(s):  
Victor de Alvarenga Oliveira ◽  
Michael Leonardo Marques Rodrigues ◽  
Versiane Albis Leão
Keyword(s):  
Reduction Roasting
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