Magnetic separation is an important ore separation method. Magnetic ore is separated from non-magnetic ore by using the behavior difference of magnetic particles in the applied magnetic field, so as to realize the purification and recovery of ore. As an advanced magnetic sorting equipment, the permanent magnet wet plate magnetic separator is widely used in mining, metallurgy, building materials and other fields, and is favored for its high efficiency, energy saving and environmental protection characteristics. This paper will introduce in detail the working principle, structure, advantages and application fields of the permanent magnet wet plate magnetic separator, in order to better understand this advanced equipment.
1. How it works
The working principle of the permanent magnet wet plate magnetic separator is based on the magnetic separation characteristics of magnetic particles under the action of an applied magnetic field. Its workflow mainly includes the following steps:
1.1 Feeding and mixing
The ore to be treated is suspended in water and uniformly transported to the feed chute of the permanent magnet wet plate magnetic separator through the feeding device. In the feed tank, the ore is fully mixed with water to form a suspended liquid.
1.2 Magnetic field action
The magnetic separator is equipped with a permanent magnet system or rare earth permanent magnet material to produce a stable magnetic field. The magnetic field absorbs the magnetic ore particles suspended in water on the magnetic surface of the wet flat magnetic separator to form a "magnetic flocculant".
1.3 Washing and Separating
The magnetic ore particles are adsorbed on the magnetic plate under the action of the magnetic field, while the non-magnetic ore particles are suspended in water. With the rotation of the magnetic surface, the magnetic ore particles are taken to the separation area, and the water is removed by the drainage device to form a concentrate of the magnetic mineral. The non-magnetic ore particles continue to move forward with the water flow, forming tailings.
1.4 Cleaning and Collection
After a period of work, the magnetic surface will accumulate a certain amount of magnetic particles. At this point, stop feeding, turn on the cleaning device, clean the magnetic ore particles on the magnetic plate surface, and collect them into the collector.
1.5 Dehydration and drying
After the collection of magnetic mineral particles, the dry magnetic mineral products are obtained through dehydration and drying treatment. At the same time, the non-magnetic ore particles are also drained through the dewatering device to reduce the water content of the tailings.
2. Structure composition
The permanent magnet wet plate magnetic separator mainly consists of the following main parts:
2.1 Feeding system
Responsible for evenly transporting the ore to be treated to the feed tank of the permanent magnet wet plate magnetic separator.
2.2 Wet flat magnetic separator
Including magnetic surface and magnetic field generation system. The magnetic surface is usually made of permanent magnet material, and the magnetic field generation system can use permanent magnet system or rare earth permanent magnet material.
2.3 Separation zone
It is responsible for separating the magnetic ore particles adsorbed on the magnetic plate from the magnetic field to form a concentrate.
2.4 Drainage Device
It is used for dewatering magnetic and non-magnetic ore particles to reduce the water content of the product.
2.5 Cleaning and collection device
Used to clean and collect magnetic ore particles on the magnetic plate surface. The accumulation of magnetic ore particles on the magnetic surface is washed through the cleaning device to ensure its purity and grade. The collection device then collects the cleaned magnetic ore particles into the hopper for further processing.
2.6 Discharge system
Responsible for discharging the collected magnetic mineral products and tailings separately. After magnetic separation, the resulting magnetic mineral product is discharged from the discharge port, while the tailings are discharged from the other discharge port.
3. Advantages and characteristics
3.1 High magnetic separation efficiency
The wet flat magnetic separator uses permanent magnet material or rare earth permanent magnet material to make magnetic surface, the magnetic field strength is stable and does not require external power to maintain, and the magnetic sorting efficiency is high. It can effectively adsorb magnetic ore particles on the magnetic plate surface, and achieve efficient separation in the separation zone, thus improving the ore grade and recovery rate.
3.2 Energy Conservation and Environmental Protection
Compared with the traditional electromagnetic wet magnetic separator, the permanent magnet wet plate magnetic separator does not require an external power supply, does not consume energy, does not produce electromagnetic radiation, and has the advantages of energy saving and environmental protection. It not only reduces energy consumption and production costs, but also helps to reduce the impact on the environment, in line with the concept of green sustainable development.
3.3 Easy Maintenance
The permanent magnet wet plate magnetic separator has simple structure, easy operation and relatively simple maintenance. Because no electromagnetic coil and external power supply are involved, the workload and cost of equipment maintenance are greatly reduced. In addition, the stable magnetic field makes the magnetic force of the magnetic surface almost not attenuated, thus extending the service life of the equipment.
4. Application field
The permanent magnet wet plate magnetic separator is widely used in mining, metallurgy, building materials and other industries, mainly used for wet magnetic separation of magnetic ore. It can be applied in the following areas:
4.1 Magnetic sorting of iron ore
In the magnetic sorting of iron ore, the permanent magnet wet plate magnetic separator can be used to remove non-magnetic impurities in iron ore, improve the grade and recovery rate of iron ore, and provide high-quality raw materials for iron ore smelting.
4.2 Tungsten ore wet magnetic separation
In the wet magnetic separation of tungsten ore, the permanent magnet wet plate magnetic separator can be used to separate the magnetic tungsten ore particles from non-magnetic quartz and other minerals to achieve the purification and recovery of tungsten ore.
4.3 Magnetic separation of manganese ore
In the magnetic separation of manganese ore, the permanent magnet wet plate magnetic separator can be used to separate magnetic manganese ore particles from non-magnetic impurities, improve the grade of manganese ore, and meet the needs of metallurgy, chemical industry and other industries.
4.4 Metal tailings treatment
In the process of metal smelting and processing, the permanent magnet wet plate magnetic separator can carry out wet magnetic sorting of metal tailings, recover valuable metal minerals, and reduce resource waste.
conclusion
As a kind of magnetic sorting equipment with high efficiency, energy saving and environmental protection, the permanent magnet wet plate magnetic separator has been widely used in mining, metallurgy, building materials and other fields. It has the advantages of simple working principle, reasonable structure, convenient operation, easy maintenance and high efficiency of magnetic separation and resource utilization. In the future development, the permanent magnet wet plate magnetic separator will continue to play an important role in promoting the progress of magnetic separation technology, and contribute more to the sustainable use of resources and environmental protection. At the same time, we also look forward to continuous technological innovation and application expansion, permanent magnet wet plate magnetic separator can play a greater application value in a wider range of fields.