A novel high-sulfur fine coal clean desulfurization …
— The magnetic separation technology of fine coal desulfurization is shown in Fig. 1.The high-sulfur fine coal was classified as 0.5 mm/0.25 mm. Microwave energy of different frequencies obtained using a micro-processing system was applied to −0.5 mm/0.25 mm fine coal.
Magnetic Separation: A Comprehensive Overview
Electromagnetic separators employ an electric current to generate a magnetic field. This type of separator is adaptable and can be tailored to specific requirements by adjusting the current intensity. Electromagnetic separators find applications in industries such as recycling, mining, and food processing.
Urchin-like Nb2O5/CNT modified separator for lithium-sulfur …
— The shuttle effect of polysulfide (LIPSs) is one of the crucial barriers for Lithium-sulfur batteries (LSBs). Herein, an urchin-like Nb 2 O 5 /carbon nanotube (CNT) modified separator was fabricated by simple hydrothermal and filtration processes. Benefiting from the strong chemical capturing ability of urchin-like Nb 2 O 5 and …
Fine Coal Desulfurization by Magnetic Separation and the …
— Pyrite in fine coal was heated selectively by microwave energy to strengthen its magnetism in this study. Then, the inorganic sulfur in fine coal (−0.5 mm) was removed using a 2 T strong magnetic roller magnetic separator. The migrating regulation of organic sulfur-containing groups and harmful elements was analyzed by employing a microwave …
Desulfurization mechanism of high-sulfur coal by heating …
— Through a literature review, the magnetism of organic sulfur can be improved by heating (Gryglewicz et al., 1996), while reduced iron powder can be used as an …
Physical separation of iron ore: magnetic separation
— Magnetite is the most magnetic of all the naturally occurring minerals on earth and can be readily extracted by low-intensity magnetic separators from magnetite ores. On the other hand, oxidized iron ores like martite, hematite, specularite, limonite, and siderite are weakly magnetic, and require high-intensity and high gradient magnetic ...
Magnetic and mesoporous Fe3O4-modified glass fiber …
the separator for lithium-sulfur batteries in this work. The assembled battery using the modified separator exhibits an excellent ... Preparation of magnetic mesoporous Fe3O4 nanoparticles Based on the method of Keyu Xie et al. [48], ferric chloride (0.65 g) and sodium citrate (0.20 g) were dissolved in 20 mL ofethyleneglycol, then 1.20g ...
Experimental study of dry permanent magnet magnetic …
Dry magnetic separation of high-sulfur fine coal was carried out using a novel permanent magnet high-gradient magnetic separator (HGMS). The samples were analyz.
Separator modification of lithium-sulfur batteries based on …
— However, there are still a series of problems, which seriously affect the commercial application of lithium-sulfur batteries. Therefore, a magnetic porous carbon material was developed in this work for the modification of lithium-sulfur battery separators, which may reduce the shuttle effect of polysulfides and increase its electrochemical ...
Metal–organic framework-based separator for lithium–sulfur …
— As a separator in a lithium–sulfur battery, the permeation resistance of the MOF@GO separator towards soluble polysulfides is an important factor.
Desulfurization of low rank coal co-pyrolysis with reduced iron powder
— After dry magnetic separation, the organic sulfur content can be reduced from 2.00% for low rank coal before the pyrolysis to 0.33% for the coal after 700 °C co-pyrolysis with Fe powder at the coal/Fe-powder mass ratio of 4:1. ... Introducing airflow into the low-intensity dry magnetic separator (LIDMS) is an effective means to improve the ...
A novel and effective method for removing organic sulfur …
— The organic sulfur in coal could be bonded with Fe and form the Fe-related magnetic compounds which is effectively separated by dry magnetic separator. Introduction The organic sulfur in low rank coal is difficult to remove.
Desulphurization of High Sulfur Coal by Mild Pyrolysis
— For testing the cleaning coal process, a Chinese high sulfur coal, Baisu coal was pyrolyzed in a fixed bed reactor from 400 to 700°C for 30min, and then separated by a dry magnetic separator.
Magnetic Separation: Process & Techniques
If you have a mixture of iron filings and sulfur powder, magnetic separation can be used to extract the iron filings from the mixture. In this case, the iron filings are magnetic while the sulfur is not. ... Magnetic Separator: Essential equipment in the process, with types including drum, belt, and roller separators serving different applications.
Mineral Magnetism
— The mineral-specific magnetic susceptibility (χ) is equal to 1.26 × 10 −7 –7.5 × 10 −6 m 3 /kg, which can be recovered in a high magnetic field magnetic separator with a magnetic field strength H 0 of 800–1600 KA/m. It includes most iron and manganese minerals, such as hematite, specularite, limonite, siderite, manganese hydrate, hard …
Selective sulfidation of metal compounds | Nature
— A framework for selective sulfidation is proposed for the practical separation and enrichment of numerous metallic elements, to enable environmentally and …
Experimental study of dry permanent magnet magnetic …
— Dry magnetic separation of high-sulfur fine coal was carried out using a novel permanent magnet high-gradient magnetic separator (HGMS). The samples were analyzed using a vibrating sample ...
Fine coal desulfurization and modeling based on high-gradient magnetic
— A high-intensity magnetic separator was used for the separation of fine coal, and an effective way to achieve the clean utilization of pulverized coal before its combustion was investigated. ... After dry magnetic separation, the organic sulfur content can be reduced from 2.00% for low rank coal before the pyrolysis to 0.33% for the coal after ...
Review of Coal-Fired Electrification and Magnetic Separation
— coal with high gradient magnetic separator, the r emoval rate of inorganic sulfur is more than 80%, ash content can be reduced by 50–60%, and the recovery of calorific value is more than 90% ...
Superconducting Magnetic Separation | SpringerLink
— Superconducting magnetic separation is a method of mineral separation by a magnetic separator with superconductor as a magnetic system. Its application is mainly with the aid of a superconducting magnetic separator equipment. ... etc. in coal. (3) Coal desulfurization – The sulfur contained in coal burning can easily cause serious …
A novel high-sulfur fine coal clean desulfurization …
— The clean coal yield of the two types of high-sulfur coal decreased by increasing the desulfurization rate, and the optimum media content used for the desulfurization of the two types of high-sulfur coal by rare-earth magnetic separator was 5%. A high-intensity magnetic separator was used for the separation of fine coal, and an …
An enhanced polyethylene/polyetherimide composite separator …
— To inhibit it, the glass fiber membrane modified by magnetic mesoporous Fe3O4 mixed with Ketjen black is designed and used as the separator for lithium-sulfur batteries in this work.
Desulfurization mechanism of high-sulfur coal by heating …
— Due to the strong magnetic properties of FeS and FeS 2, they can be removed by a magnetic separator (Yu et al., 2018). Therefore, with the participation of reduced iron powder, thiophene can be partially removed at 600 °C for 1 h. ... With the technology proposed in this work, the centralized capture and magnetic separation of …
Comprehensive Design of the High-Sulfur …
— The lithium-sulfur battery is the subject of much recent attention due to the high theoretical energy density, but practical applications are challenged by fast decay owing to polysulfide shuttle …
Separator modification of lithium-sulfur batteries based on …
— Download Citation | Separator modification of lithium-sulfur batteries based on Ni-Zn bimetallic MOF derived magnetic porous Ni-C composites | Because of its high theoretical specific capacity ...
How to Use Magnetic Separation for Iron Ore Recovery
— Learn some effective ways to use magnetic separation for iron ore recovery, such as choosing the right type of separator, optimizing the operating conditions, and combining it with other methods.
Desulphurization of High Sulfur Coal by Mild Pyrolysis …
In this work, a new desulfurization process of high sulfur coal was designed and examined. The novel process involved pyrolysis of high sulfur coal at low temperature and then a dry magnetic separation. For testing the cleaning coal process, a Chinese high sulfur coal, Baisu coal was pyrolyzed in a fixed bed reactor from 400 to 700°C for 30min, and then …
Effect of dispersant addition on separation of sulphur from …
Consequently, a clean coal product was obtained with sulphur content of 1.75 % and sulphur removal of 45.5 %. The effect of dispersant addition was found to have a pronounced effect on separation of sulphur from coal by magnetic separation. Upon addition of different dispersants, an increase of nearly 17.0 % on sulphur removal was obtained.
Preparation of three-dimensionally interconnected sulfur …
— Separator modification is a promising strategy with regard to lithium–sulfur batteries for trapping polysulfides and suppressing the involved shuttle effect. Herein, a sulfur-deficient molybdenum disulfide/nitrogen-doped carbon composite with an open and interconnected structure (IMoS 2-x ) was synthesized through facile salt template …
Magnetic desulfurization of coal
The experimental separator consisted of a laboratory column, packed with either steel wool or screens, inserted in the bore of a solenoid magnet. Experimental results, confirmed the effects of coal particle size and slurry velocity as predicted by the model. ... Magnetic recovery of pyritic sulphur and coal from mine rejects has been envisaged ...
Removal of sulfur and mineral matter from coal slurry by a …
— The effective separation of sulfur and mineral matter from coal can be realized by the use of the P 40 Jones magnetic separator. This high-intensity magnetic separator …
Scaled-up fabrication of porous-graphene-modified separators …
— In this contribution, we present facile, scalable, and green fabrication of Janus-type, porous-graphene (PG)-modified PP separators for lithium–sulfur batteries at pouch-cell level (Fig. 1).The as-obtained lithium–sulfur batteries employing PG separators exhibited enhanced capacity, cycling stability, and rate capability than those using PP …
Experimental Study on Combined …
— In order to reduce the content of sulfur and ash in coal, improve the desulfurization and deashing rates, a combined experiment method of microwave …
Dry Permanent Magnetic Separator: Present Status and …
Minerals 2022, 12, 1251 4 of 20 Figure 1. Schematic diagram of CT series magnetic pulley structure. 1—multipole magnetic system; 2—cylinder; 3—magnetic conductor; 4—belt [8].