In this study, freshly formed hydrous ferric oxide (HFO) sols were used to remove aqueous phosphate, followed by superconducting magnetic separation. The magnetization of HFO was determined to be 5.7 emu/g in 5.0 T. The particle size distributions ranged from 1 to 80 μm. Ferrihydrite was the primary mineral phase according to XRD analysis.
Superconducting separators are a new generation of magnetic separators; as a source of magnetic field a dc superconducting electromagnets are used. It creates, between other things, a chance to reject weak-magnetic particles as well as extra small ones (the basic problem for beneficiation of useful minerals). The subject of this paper is the used of superconducting …
Since the 1970s, magnetic separation has been increasingly used for purification of liquids, such as heavy-metal ion removal from laboratory waste water, purification of kaolin clay in the paper-coating industry, waste water recycling in the steel industry, and recycling of glass grinding sludge in cathode-ray tube polishing factories. In the 1980s, large superconducting …
With more than 30 years experience in the R&D of magnetic separation technologies, we specialize in manufacturing superconducting magnetic separators, electromagnetic wet & dry high intensity magnetic separators, permenant wet & dry magnetic separators, overhead magnetic iron separators, eddy current separators, ultra-fine grinding and classifying …
A circulating high-gradient superconducting magnetic separator was produced in this work. Steel wool was filled in the circulating boxes. The boxes were connected by two chains, which moved in and out the magnetic field by a drive motor. The efficiency of iron-rich RM separation by the superconducting magnetic separator was investigated.
It has been claimed that graphite hosts superconductivity at room temperature, although all efforts to isolate it have been vain. Here we report a separation method that uses …
This paper discusses some of the fundamental characteristics of magnetic separation, the progress of superconductorization (use of superconducting magnets as …
The separation scheme diagram of the superconducting magnetic separation system is shown in Fig. 4. In the separation process, a separation canister filled with the specific magnetic matrix was first attached to a feeding pump and a tailing tube and subsequently transferred to the superconducting magnetic bore. Following this, the magnetic ...
The magnetic seeding of the organic pulp and dyes were successfully performed and the Chemical Oxygen Demand (COD) value for recycling was reached to less than 40 ppm after magnetic separation. The superconducting magnet for the system is 3 T, 680 mm long and 400 mm bore NbTi solenoid.
Magnet Systems and Sub-assemblies for Gyrotron, NMR, ICR, SQUID, VSM, Faraday Balance, Microscope, Moss, Magnetic Separation. Since the formation of our company in 1983, Cryomagnetics' products have been …
A superconducting magnetic separator uses superconducting magnet as magnetic source to replace the magnetic source of ordinary magnetic separator. At a certain …
Magnetic separation equipment is widely used in the separation of magnetic minerals. Low-intensity magnetic separator is mainly used for the separation of minerals with specific magnetic susceptibility greater than 1 × 10 −6 m 3 /kg, such as magnetite, vanadium titano-magnetite, pyrrhotite, and other minerals. Medium-intensity magnetic separator is …
ABSTRACT. Comprehensive utilization of tailings resources not only solves environmental problems but also creates huge economic benefits. In this paper, fine weakly magnetic particles were extracted from iron ore beneficiation tailings and silica (SiO 2) was separated and purified using a superconducting high gradient magnetic separator.Based on …
The open gradient superconducting magnetic separation magnet comprised four saddle-shaped coils and an optimized iron yoke. The radial magnetic flux density was 1 T at a distance of 20 mm from the surface of the coil at an operating current of 120 A, resulting in a magnetic force density of 3.5*10 7 N/m 3, with a peak field in the coil of 4.82 ...
Superconducting magnetic separation has been applied on recovery of the valuable resources from the steel slag and this process also has intended to reduce the waste to be dumped. Cryo-cooled Nb-Ti superconducting magnet with 100 mm bore and 600 mm of height was used as the magnetic separator. The separating efficiency was evaluated in the ...
We set up a magnetic separator consisting of an acrylic pipe located between the magnetic poles of a face-to-face superconducting bulk magnet. We tested the separator under both high-gradient magnetic separation (HGMS) and open-gradient magnetic separation (OGMS). Adsorption ratios greater than 95% were achieved for sufficient concentrations of ...
Magnetic separation has applications in removing tramp iron from ore streams and separating magnetic minerals from less magnetic ones. Common magnetic separators include low-intensity and high-intensity drums, …
However, superconducting magnetic separation efficiency of PFS-magnetite flocs increased by more magnetite added (Fig. 7). Therefore, the compact degree of flocs cannot totally characterize the combination of PFS and magnetite. For other mechanism explains, absorption of iron oxide on magnetite should play an important role in the magnetic ...
Magnetic separation systems are designed to handle large forces to the superconducting magnet, while maintaining good liquid cryogen loss performance. Gyrotron systems are designed with strict magnetic field to dewar alignment specifications while meeting stringent liquid cryogen loss performance.
Magnetic separation is the mineral separation method to separate different minerals by magnetic differences. ... several types of superconducting magnetic separators began to appear in the early 1970s. A superconducting magnetic separator is a coil wound by a superconductor. Its resistance is zero at low temperature and excitation consumes ...
As a new type of solid waste treatment technology, superconducting high gradient magnetic separation (HGMS) is mainly applied in the separation of micro-fine weakly magnetic particles because of the advantages of high separation efficiency, energy saving, simple equipment and easy automation.
A superconducting open gradient magnetic separation (OGMS) system maybe suitable for the removal of the deleterious transition elements (e.g. Fe, Co, and Ni) and other elements (lanthanides) from vitrification feed streams due to their ferromagnetic or paramagnetic nature.
As illustrated in Fig. 1, it consists of superconducting magnet system, refrigerating system and separation system. The superconducting magnet is an assembly of concentric components. The separation area is a uniform magnetic field situated in the centre of the assembly. The system, which has no liquid helium boil-off, is cooled by the ...
As the obtention of superconducting particles is central to this work, we describe here the Magnetic Decantation Separation (MDS) method first used for sorting superconducting from regular graphite grains. It relies on the differential migration of particles of different …
Superconducting magnets are only now beginning to be used in the field of magnetic separation, and their future use will be considerable. The basic characteristic of …
CHAPTER 7 Magnetic and Electrostatic Separation Partha Venkatraman, Frank S. Knoll, and James E. Lawver INTRODUCTION Knowledge of magnetic and electrostatic forces dates back at least to the Greek philosopher Thales of …
In this article, an open gradient superconducting magnetic separation magnet conduction cooled by a two-stage Gifford McMahon (GM) cryocooler was designed and developed. The open …
Superconducting magnetic separation can be classified into high gradient superconducting magnetic separation and open gradient superconducting magnetic separation. (1) High gradient superconducting magnetic separation. When the working area of the magnet is filled with magnetic medium (such as steel wool), the steel wool is magnetized …
Here we report a separation method that uses magnetic field gradients to sort the superconducting from normal grains out of industrial graphite powders. We have obtained a …
Superconducting magnetic separation is different from traditional treatments. Comparing to traditional treatment methods, it has some advantages, such as the lower investment, smaller area occupied, and shorter period of processing. Since the cryocooler cooled superconducting magnets are commercial available, it becomes easier and cheaper to ...
Abstract: The application of superconducting magnets has improved decisively since the late 1980's and is now firmly established as the preferred method in large-scale …
Duan Wanqing, Jiang Xiangdong, Wang Yu, Huang Qing. Summary of Superconducting Magnetic Separation Technology[J]. Multipurpose Utilization of Mineral Resources, 2014 ...
Magnetic separation-superconductivity in industry Abstract: The application of superconducting magnets has improved decisively since the late 1980's and is now firmly established as the preferred method in large-scale mineral separation. The breakthrough came with the introduction of user-friendly cryogenic devices, first relatively cost ...
A high gradient magnetic separation system for medical protein using affinity magnetic nano-beads has been developed. Medical protein such as monoclonal antibody or immunoglobulin is an important substance as a medicine for cancer etc.