scholarly journals Simultaneous Selective Chlorination and Carbothermic Reduction of High-Iron Manganese Ore for the Recovery of Manganese Chloride and Metallic Iron

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1124
Author(s):  
Dawei Yu ◽  
Fuhui Cui ◽  
Yunxiang Cong ◽  
Chunxi Zhang ◽  
Qinghua Tian ◽  
...  
Keyword(s):  
Carbothermic Reduction ◽  
Reduction Rate ◽  
Water Soluble ◽  
Soluble Form ◽  
Low Grade ◽  
Manganese Ore ◽  
High Iron Content ◽  
Produce Water ◽  
High Iron ◽  
Iron Manganese

Metallurgical processing of low-grade manganese ore with high iron content is gaining increasing attention due to the gradual depletion of high-grade Mn ores, amid the difficulties in its efficient extraction for both Mn and Fe values in an environmentally-friendly manner. Attempting to tackle the difficulties, this paper describes an innovative process for selectively chlorinating and reducing the high-Fe manganese ore in a simultaneous manner, aiming to produce water-soluble MnCl2 and metallic Fe. After pre-mixing with carbonaceous reductant, CaCl2 and MgCl2 as the chlorinating agent, the Mn ore was heated at 1000 °C. As much as 89.4% Mn can be chlorinated in its water-soluble form, with dissolution of only 3.0% Fe. The presence of CaCl2 during carbothermic reduction resulted in significant promotion in both the Fe reduction rate and formation of large metallic Fe particles due to the segregation effect, facilitating subsequent separation. Selective Mn chlorination by MgCl2 took place with or without the involvement of SiO2, forming MgSiO4 or MgO, respectively.

Electrochemical desorption of high-iron manganese ore

2018 ◽  
Vol 123 ◽  
pp. 27-34
Author(s):  
Zhuoyu Xie ◽  
Yongbing Huang ◽  
Yang Cao ◽  
Lili Lin ◽  
Min Huang
Keyword(s):  
Manganese Ore ◽  
High Iron ◽  
Iron Manganese

ON THE PROCESSING OF HEMATITE RAW MATERIALS AT THE KRYVOROZHSK MINING AND PROCESSING PLANT OF OXIDIZED ORE ON TECHNOLOGY OF DIRECT RECOVERY ITmk3

2018 ◽  
pp. 32-37
Author(s):  
P.I. Loboda ◽  
Younes Razaz ◽  
S. Grishchenko
Keyword(s):  
Magnetic Properties ◽  
Cast Iron ◽  
Iron Content ◽  
Raw Materials ◽  
Direct Reduction ◽  
Processing Plant ◽  
High Iron Content ◽  
High Iron ◽  
Direct Restoration ◽  
First Time

Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®. Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”). Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded. Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time. Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.

Research status of microwave-assisted reduction technology of pyrolusite

2020 ◽  
Vol 07 ◽  
Author(s):  
Li Qiannan ◽  
Ling Yeqing ◽  
Zheng Hewen ◽  
Yang Zhi
Keyword(s):  
Metallurgical Industry ◽  
Raw Material ◽  
Utilization Efficiency ◽  
Low Grade ◽  
Manganese Ore ◽  
Effective Utilization ◽  
Research Status ◽  
Strategic Position ◽  
Research Intensity ◽  
Stable Development

: Manganese ore is an important metallurgical raw material that holds an important strategic position in the national economy of China. However, the grade of manganese ore in the country is mostly low, and the utilization efficiency of lowgrade manganese ore resources is low, which seriously restrict the healthy and stable development of China’s metallurgical industry. As a new green heating method, microwave is expected to address the problems of conventional methods and realize the effective utilization of low-grade manganese ore. In this paper, the research status of the microwave composite reduction of pyrolusite in recent years is reviewed. Microwave plays an important role in metallurgy, and it is the current direction pursued to improve the research intensity of microwave heating and extend it to actual industrial processes.

scholarly journals Analyzing the Carotenoid Composition of Melilot (Melilotus officinalis (L.) Pall.) Extracts and the Effects of Isolated (All-E)-lutein-5,6-epoxide on Primary Sensory Neurons and Macrophages

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 503
Author(s):  
Györgyi Horváth ◽  
Eszter Csikós ◽  
Eichertné Violetta Andres ◽  
Tímea Bencsik ◽  
Anikó Takátsy ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Sensory Neurons ◽  
Biological Activities ◽  
Water Soluble ◽  
Soluble Form ◽  
Primary Sensory Neurons ◽  
Isolation And Identification ◽  
Melilotus Officinalis ◽  
Carotenoid Composition ◽  
Anti Inflammatory

Melilotus officinalis is known to contain several types of secondary metabolites. In contrast, the carotenoid composition of this medicinal plant has not been investigated, although it may also contribute to the biological activities of the drug, such as anti-inflammatory effects. Therefore, this study focuses on the isolation and identification of carotenoids from Meliloti herba and on the effect of isolated (all-E)-lutein 5,6-epoxide on primary sensory neurons and macrophages involved in nociception, as well as neurogenic and non-neurogenic inflammatory processes. The composition of the plant extracts was analyzed by high performance liquid chromatography (HPLC). The main carotenoid was isolated by column liquid chromatography (CLC) and identified by MS and NMR. The effect of water-soluble lutein 5,6-epoxide-RAMEB (randomly methylated-β-cyclodextrin) was investigated on Ca2+-influx in rat primary sensory neurons induced by the activation of the transient receptor potential ankyrin 1 receptor agonist to mustard-oil and on endotoxin-induced IL-1β release from isolated mouse peritoneal macrophages. (all-E)-Lutein 5,6-epoxide significantly decreased the percent of responsive primary sensory neurons compared to the vehicle-treated stimulated control. Furthermore, endotoxin-evoked IL-1β release from macrophages was significantly decreased by 100 µM lutein 5,6-epoxide compared to the vehicle-treated control. The water-soluble form of lutein 5,6-epoxide-RAMEB decreases the activation of primary sensory neurons and macrophages, which opens perspectives for its analgesic and anti-inflammatory applications.

Fabrication of bisferrocenyl derivative grafted HTPB with high iron content and its application in dopamine detection

2021 ◽  
pp. 121789
Author(s):  
Alireza Aghaiepour ◽  
Shabnam Rahimpour ◽  
Elmira Payami ◽  
Reza Mohammadi ◽  
Reza Teimuri-Mofrad
Keyword(s):  
Iron Content ◽  
High Iron Content ◽  
High Iron ◽  
Dopamine Detection

scholarly journals Human Lanosterol 14-Alpha Demethylase (CYP51A1) Is a Putative Target for Natural Flavonoid Luteolin 7,3′-Disulfate

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2237
Author(s):  
Leonid Kaluzhskiy ◽  
Pavel Ershov ◽  
Evgeniy Yablokov ◽  
Tatsiana Shkel ◽  
Irina Grabovec ◽  
...  
Keyword(s):  
Cholesterol Metabolism ◽  
Cholesterol Biosynthesis ◽  
Clinical Importance ◽  
Optical Biosensor ◽  
Water Soluble ◽  
Soluble Form ◽  
Redox Partner ◽  
Access Channel ◽  
Kd Values ◽  
Key Steps

Widespread pathologies such as atherosclerosis, metabolic syndrome and cancer are associated with dysregulation of sterol biosynthesis and metabolism. Cholesterol modulates the signaling pathways of neoplastic transformation and tumor progression. Lanosterol 14-alpha demethylase (cytochrome P450(51), CYP51A1) catalyzes one of the key steps in cholesterol biosynthesis. The fairly low somatic mutation frequency of CYP51A1, its druggability, as well as the possibility of interfering with cholesterol metabolism in cancer cells collectively suggest the clinical importance of CYP51A1. Here, we show that the natural flavonoid, luteolin 7,3′-disulfate, inhibits CYP51A1 activity. We also screened baicalein and luteolin, known to have antitumor activities and low toxicity, for their ability to interact with CYP51A1. The Kd values were estimated using both a surface plasmon resonance optical biosensor and spectral titration assays. Unexpectedly, in the enzymatic activity assays, only the water-soluble form of luteolin—luteolin 7,3′-disulfate—showed the ability to potently inhibit CYP51A1. Based on molecular docking, luteolin 7,3′-disulfate binding suggests blocking of the substrate access channel. However, an alternative site on the proximal surface where the redox partner binds cannot be excluded. Overall, flavonoids have the potential to inhibit the activity of human CYP51A1 and should be further explored for their cholesterol-lowering and anti-cancer activity.

High iron content of Ankaferd hemostat as a clue for its hemostatic action of red blood cell origin

2015 ◽  
Vol 26 (2) ◽  
pp. 233-234 ◽  
Author(s):  
Nejat Akar ◽  
Yasemin Ardçoğlu ◽  
Zeki Öktem ◽  
Nuran Erduran ◽  
Ibrahim C. Haznedaroglu
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Iron Content ◽  
High Iron Content ◽  
High Iron
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