High Gradient Slurry Electromagnetic Separator
Application
Suitable for iron removal and purification of non metallic minerals such as quartz, feldspar, kaolin, etc. It can also be used for wastewater treatment in steel mines and power plants, as well as cleaning contaminated chemical raw materials.
Working Principle
After the excitation coil is energized, the surface of sorting medium 3 in the sorting chamber induces a high gradient super strong magnetic field.Medium 3 has an adsorption effect on magnetic substances in the slurry, which can achieve the separation of magnetic and non magnetic substances.The concentrate slurry is discharged from the equipment through the slurry outlet pipeline 5.After the coil is powered off, the high-pressure water pump flushes water, and the magnetic impurities adsorbed on medium 3 are discharged from the slag outlet pipeline 8 to form tailings.The above work process is completed by program automation to control the opening and closing of pneumatic valves, as well as the start and stop of coils and water pumps, which can reliably and efficiently complete equipment automation operations.
Main Technical Parameters
◆ Unique electromagnetic coil design and efficient cooling method.
The excitation coil of the electromagnetic slurry high gradient magnetic separator adopts fully sealed cooling oil for cooling.The excitation coil is cooled by ordinary national standard No. 25 transformer oil, and the external high- efficiency heat exchanger is used for oil-water heat exchange. The cooling speed is fast, and the coil temperature is stable, ensuring a stable magnetic field.
◆ With the special magnetic medium, the magnetic field gradient is large and the separation effect is good.
The medium is made of special magnetically permeable stainless steel, which can generate a gradient magnetic field of more than 1.7 times under the excitation of the background magnetic field. It has a strong attraction effect on low- content weak magnetic impurities and has a good iron removal effect.
◆ Fully automatic operation, low operation and maintenance costs.
The working process of this equipment adopts automated program control, which can achieve unmanned and fully automatic operation, reducing operation and maintenance costs.
◆ High pressure water positive and negative flushing, clean iron unloading, and no residue.
Use high-pressure water to clean the medium. The cleaning time can be set according to different minerals and different stages of iron removal to improve treatment efficiency.
Innovation Point One
The cooling system adopts a fully sealed external circulation structure, which is rainproof, dust proof and corrosion proof, and can work in various harsh environments. Using oil-water heat exchange cooler, intelligent control, constant temperature of excitation coil and small fluctuation of magnetic field.
Innovation Point Two
The electromagnetic coil adopts a multi-layer winding structure and is immersed in transformer oil, which doubles the heat transfer area of the coil.and forms a relatively independent cooling oil channel between each layer of coil,effectively controlling the flow of cooling oil and realizing the rapid heat exchange between the coil and the transformer oil, ensuring that the temperature rise of the coil is not greater than 25℃ .
Innovation Point Three
Adopting an oil-water heat exchanger to cool the coil, which has strong adaptability and is easy to install and use. When using an oil-water heat exchanger for cooling.The use of water to cool the transformer oil through the heat exchanger can obtain a lower temperature rise, which is especially suitable for areas with higher temperatures in the south.Effectively avoid the magnetic
field fluctuation caused by the coil temperature change, ensuring that the separation quality is stable.
Innovation Point Four
Using a variety of magnetic medium forms (diamond expanded steel mesh, steel wool, steel rods, etc.), with a large magnetic field gradient, it is suitable for iron removal and purification of materials with different particle sizes.
Innovation Point Five
The control system adopts a programmable controller as the core control component.which can effectively control each executing mechanism to operate according to the process requirements period:Real-time monitoring of field data to facilitate user archiving query.
Applying Internet of Things and cloud platform technologies to collect and analyze equipment operation data in real time to realize remote operation and maintenance, fault diagnosis and full lifecycle management of equipment.
The excitation time of the equipment is short, ensuring that the rated excitation field strength can be reached within 20 seconds.It solves the shortcomings of the magnetic field strength decreasing and the excitation rising speed slow after the thermal operation of the conventional equipment.
Main Technical Parameters
Model selection method: in principle, the model selection of equipment is subject to the amount of mineral slurry. When separating minerals using this kind of equipment, the slurry concentration has certain influence on the mineral processing index. To get better mineral processing index, please reduce the slurry concentration properly. If the ratio of magnetic materials in the mineral feed is slightly high, the processing capacity will be limited to the total catching amount of magnetic materials by magnetic medium. In this case, the feed concentration should be reduced appropriately.
