electromagnetic separator manufacturer

PTMS MAGNETIC SEPARATOR

what is magnetic separation in Kaolin？

The kaolin is hydrated aluminum silicate (Al 2 O 3 · 2SiO 2 · 2H 2 O). Due to its unique physical, physical and chemical properties, it has a wide range of industrial applications. These include paper coatings and fillers, refractory materials, fiberglass and insulation, rubber, paint, ceramics and chemicals.
However, due to the wide variety of applications of clay, it is often necessary to use other mechanical and chemical processes such as drying, calcining, bleaching, passivating and extruding to prepare the materials to be used.
Kaolin samples originally have white and high clay brightness, but mainly contain different amounts of color changing elements such as anatase (TiO 2 ), mica and iron oxide (Fe 2 O 3 ), which have low brightness and low quality. In addition, anatase (ilmenite) and mica may also contain iron contaminants. The presence of these impurities hinders the production of optical fibers, glass, ceramics and refractory materials, and therefore a great deal of effort has been devoted to removing these contaminants by physical, chemical or a combination thereof.
The main step in kaolin processing is the separation of ground minerals such as quartz and unwanted minerals such as mica. This is a simple process for secondary deposition, but it is more difficult than the main deposit because of the high proportion of abrasive minerals in the alteration process.
In order to improve the quality of industrial kaolin, it is necessary to remove discolored impurities from the sample by a suitable technique. However, these impurities are finer than clay minerals, which in turn causes difficulties in the separation process. These separation processes typically include magnetic separation, froth flotation, selective flocculation, and hydrocyclone separation size and leaching.
For most industrial applications, kaolin should be processed to obtain refined clay to produce superior products that meet standard specifications. For example, kaolin used in the paper and coatings industry needs to have high brightness and low yellowness.
The high-gradient iron remover handles 75% of the world's white porcelain and paper, with a filter diameter of about 2 meters and a capacity of up to 20 tons per hour.
It is mainly used in the kaolin of the paper industry, which plays a dual role as a filler between pulp fibers and as a surface coating for white glossy surfaces. However, natural kaolin has color due to the presence of iron mica, tourmaline, pyrite, anatase and rutile in the material. To remove these impurities, the kaolin can be magnetically cleaned with a continuous high gradient magnetic separator to produce highly white materials suitable for paper or porcelain.
Superconducting magnets are used more efficiently in the kaolin refining process. This includes the use of powerful magnets with magnetic field strengths ranging from 2 to 6 Tesla. A range of 2 to 6T is achieved by using liquid helium cooled superconducting coils, which results in significant power savings. The kaolin slurry is pumped through a highly compressed fine stainless steel wool matrix that, when energized, separates the magnetic minerals and allows the non-magnetic kaolinite to pass through the substrate. The magnetic field is periodically turned off so that the accumulated magnetic particles can be washed with water to clean the steel wool substrate.
It has also been determined that a high magnetic separator is effective for producing high brightness clay for nanoscale color changing elements. Therefore, other processes (flotation and/or selective flocculation) can be added to increase the brightness of the kaolin.
The magnetic filter is a high-strength electromagnetic matrix separator that is wrapped in steel with an oil-cooled solenoid and combined with a magnetic flux convergence matrix. The expansion tank may be located outside of the electromagnet to allow the oil temperature to change with temperature.
High-strength magnetic filter iron remover
The magnetic field generated by the energized coil produces a uniform magnetic field in the filter aperture, including a ferromagnetic matrix sandwiched between the reentrant pole pieces. The matrix amplifies the background magnetic field and provides a high gradient collection point for magnetic particle capture.
As the feed flows through the substrate, the magnetic particles are captured and subsequently removed from the particle stream.
If the matrix does not reach magnetic saturation, the matrix produces a typical magnified field that is approximately three times the background field. Saturation depends on the matrix material, but about 18,000 Gauss is a typical low carbon steel.
Kaolin plays a very important role in the industrial aspects of life. It has been recognized as the economic gateway to many industrial applications, and its use is influenced by its functional characteristics. It is used as a functional filler, coating, pigment and extender in several industrial applications, where PVC coatings on paper, plastics, rubber, wires and cables, and ceramics are also important consumers.
The largest use of kaolin is in the paper industry (as a filler and coating on the surface of paper to enhance printing) and ceramic production as an additive. For both industries, the quality of the final product requires a high degree of whiteness.