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At present, the main manufacturers of permanent magnet cylinder magnetic separators in China are Shenyan, Tianyuan Technology, North Mine, Longji Magnet, Jiangsu Baolong, Jilin Xinye, Yankuang, Yankuang, Liaoyan.
1. Shen Shen ore mine in the early 1960s, the first successful development of China's first permanent magnetic drum magnetic separator, 40 years and continue to develop and improve the structure of the magnetic system, using the new ferrite and rare earth magnetic alloys The steel composite magnetic system has greatly improved the magnetic induction strength and formed a complete product series. It is currently the manufacturer with excellent performance and the most complete specifications.
The permanent magnet cartridge magnetic separator produced by the plant is suitable for wet sorting of fine-grained ferromagnetic minerals, or for removing mixed ferromagnetic minerals from non-magnetic minerals, and for recovering media in heavy media plants.
The machine has three kinds of tank forms: 1 semi-counterflow tank (CTB): sorting particle size is 1~0mm, minicomputer is 0.5~Omm; 2 counterflow trough (CTN): sorting granularity is 0.6~Omm: 3 downstream Tank (CTS): The sorting particle size is 6~0mm. The user can select the magnetic separator of different tanks according to the nature of the ore, the size of the ore and the process of the ore dressing .
The Shenyuan mineral permanent magnet type magnetic separator and its technical parameters are listed in Table 1. The shape and installation dimensions of some magnetic separators are shown in Figures 1~5 and Table 2, respectively.
2. Sinosteel Anhui Tianyuan Technology Co., Ltd. (hereinafter referred to as Tianyuan Technology) Tianyuan Technology is an important manufacturer of magnetic separators in China. The products are of good quality and now mainly produce CT type permanent magnetic cylinder magnetic separators. It is divided into two series of products. In recent years, ZC series permanent magnet medium magnetic field magnetic separator and NCT series full rare earth permanent magnet magnetic separator have been developed and produced.
(1) Φ750, Φ600, Φ900, Φ1200 series permanent magnet cylinder magnetic separators are wet weak magnetic field magnetic separators, which use ordinary ferrite magnets to form a magnetic system. The average magnetic induction intensity of the cylinder surface is 0.15~0.18T. It has the characteristics of large processing capacity, strong adaptability to production fluctuations, and good sorting effect.
The Φ750mm series magnetic separator has a magnetic wrap angle of 120 degrees and has 4 poles. It uses a Y series motor; it is generally a semi-reverse flow tank. It is suitable for the selection of particle sizes of 0.15~Omm and coarse selection of 0.5~Omm ferromagnetic minerals. Sorting. It can be used for roughing after primary grinding to discard qualified tailings. It can be used for secondary ore grinding to obtain higher concentrate grade and recovery rate. It is generally suitable for selected operations or small and medium concentrators. The Φ1200mm magnetic separator is a large-scale equipment that can be used in large-scale concentrators.
The structure, external dimensions and installation dimensions of the Φ750mm series magnetic separator are shown in Figure 6. The technical parameters of each magnetic separator are listed in Table 3.
Working principle: This machine uses magnetic force to carry out mineral sorting according to the different specific magnetic susceptibility of various minerals. When the slurry enters the sorting zone, due to the different magnetic susceptibility of various minerals, under the magnetic field magnetic force, the ferromagnetic mineral is adsorbed on the surface of the cylinder, and is rotated to the ore ore with the cylinder, and is deducted from the magnetic system. The mine flushing water is discharged into the concentrate tank; the gangue and weak magnetic minerals cannot be attracted by the magnetic force. Under the action of the slurry flow in the tank, the counter-circular rotation direction flows into the tailings discharge pipe.
(2) Φ1050 series permanent magnet cylinder magnetic separator. This series of magnetic separators, commonly known as large-diameter magnetic separators, was first developed by Mayuan in the 1970s and put into industrial production. It has already established significant achievements in the field of magnetite ore dressing in China. Later, the development of another aircraft, a magnetic system from the original develop as magnetic system, namely: ①ferrite whole system, from inexpensive strontium ferrite blocks, the average magnetic induction tube sheet, respectively to 120 mT (low field type) and 170mT; ② rare earth complex magnetic system, a small amount of high magnetic rare earth magnetic material (titanium-iron-boron) composed of a composite ferrite magnet, a rare earth magnetic material to strengthen tailings sweep constituency The total magnetic induction intensity of the cylinder table is 200mT, the tailings sweeping strengthening zone can reach 300mT, and the average 50mmT from the cylinder surface is still above 100mT. Due to the use of rare earth composite magnetic system, the application range of the series of magnetic separators (recoverable artifacts and semi-artificial hematite) has been expanded, which has further improved the beneficiation index, especially the recovery rate of concentrate. Generally applicable to large and medium magnetite ore selection plants and heavy medium selection plants (recovering magnetic media).
The magnetic system of the Φ1050mm series magnetic separator has a wrap angle of 127 degrees, the number of magnetic poles is 5 poles or 6 poles, and the tank body is in the form of semi-backflow and full counterflow. The Y series motor is used, and the reducer i=40~50. The detailed technical parameters are listed in Table 3.
The structure and dimensions of the Φ1050 series magnetic separator (part) are shown in Figures 7 and 8. Its working principle is the same as above, omitted here.
(3) ZC series permanent magnet medium magnetic field magnetic separator. The magnetic system consists of a mixture of rare earth magnetic poles and ferrite magnetic poles. The magnetic induction intensity of the cylinders in the selection zone is 350-450 mT, which is an effective equipment for removing iron and other non-metallic minerals such as quartz sand.
NCT series full rare earth permanent magnet barrel magnetic separator. The magnetic system is composed entirely of rare earth magnet blocks, and the magnetic induction intensity of the cylinders in the selection zone is 500-700 mT. Mainly used for sorting illusions, semi-artificial minerals, and non-metallic minerals to remove iron. The technical parameters of these two series of magnetic separators are listed in Table 3.
(4) YMK series permanent magnet pulsation open gradient magnetic separator. YMK series magnetic separator adopts high-performance permanent magnet material and has a wide range of field strength. It combines high gradient and pulsation technology. It is an advanced model with good performance and low price. It can be used for wet sorting or fine removal. Granular weak magnetic minerals are especially suitable for sorting fine-grained weak magnetic iron minerals. The machine is equipped with a vertical sorting ring and a permanent magnet magnetic system of the magnetic magnetic medium. The structure is not only sturdy and compact, the body is light, the reliability is good, and the energy saving effect is very remarkable. The technical parameters are shown in Table 4.
(5) CMC series permanent magnet pulsation magnetic separator. The CMC series magnetic separator is an improved version of the permanent magnetic cylinder magnetic separator. It is equipped with a magnetic pulsation device to reduce the inclusions of the gangue and lean organisms in the ferromagnetic minerals by using magnetic field pulsation to improve the concentrate grade. The magnetic induction intensity is generally 60~100mT, and can also be designed according to user requirements. This machine is mainly used for the selection of magnetite, which can increase the grade by 2~3 percentage points compared with the ordinary cartridge magnetic separator. The technical parameters are shown in Table 5.
3. Jilin Xinye The wet-type permanent magnetic cylinder magnetic separator produced by the company has CT type (weak magnetic field) and CB type (medium magnetic field), and its technical parameters are listed in Table 6. Listed in the table are semi-counterflow troughs, but also full countercurrent troughs, downstream troughs. It is suitable for sorting magnetite, illusion hematite, semi-artificial hematite and recycling heavy medium. It has a wide application range and good sorting effect. Liaoyan Magnetic also produces a similar CT type wet permanent magnet cartridge magnetic separator with complete specifications.
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   Table 1  Table 2  table 3  Table 4   table 5  Table 6
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4. North Mine Institute The new BK series of permanent magnet cartridge magnetic separators developed and produced by the Institute of Mechanical Engineering of the Institute are divided into the following five types, BKY, BKC, BKJ, BKW-II and BKF. They are respectively applicable to: 1BKY magnetite pre-selected cartridge magnetic separator series. Pre-selected throw-out for coarser ore fines in fine or self-grinding machine ; 2BKC magnetite is mainly used in the series of magnetic separators. It is specially used for rough selection and enrichment in the first stage after grinding, throwing out as many qualified tailings as possible, and improving the grade of coarse concentrate as much as possible; 3BKJ magnetite selection series of magnetic separators. Dedicated to the selection of magnetite, the concentrate meets the required grade requirements, while ensuring sufficient magnetic iron recovery rate; 4BKW-II magnetite tailings are re-selected as a series of magnetic separators. It is specially used for recovery control of tailings sweeping and production in case of unexpected failure in normal production; 5BKF type reverse magnetic flotation process cartridge magnetic separator series. It is specially used for the concentration and recovery of flotation foam in magnetite reverse flotation process.
The technical parameters of the series of magnetic separators are listed in Table 7, and the outline and installation dimensions are shown in Figure 9 and Table 8.
The general structural characteristics of the BK series magnetic separator are: 1 the special tank body can form a higher slurry level and a large sorting chamber; 2 special feeding bucket can feed the slurry to the lower magnetic field of the sorting tank Or higher field strength zone; 3 sorting zone has impact scatter magnetic group, rinsing water device for diluting pulp; 4 has rear overflow and bottom and front wake channel suitable for non-magnetic gangue separation and discharge; 5 is suitable for Large-angle magnetic system for magnetization, adsorption, etc., and transportation, unloading, etc.; 6 magnetic field in the sorting area of ​​adsorbed magnetic material has a large depth.
5. Baotou Application Institute The BX series permanent magnet magnetic separator developed by the company uses magnetic focusing technology in the design of magnetic circuit, which achieves high field strength and high gradient, and can ensure the depth of magnetic field action, which is beneficial to improve recovery rate; The new structure and multi-pole are used to improve the grade. Over the years, the Institute has insisted on the mineralization adaptability test for users. According to the test data, the field strength, gradient, pole number, wrap angle and magnetic field depth of the magnetic separation equipment are determined.
BX series cartridge magnetic separator features: magnetic field and its gradient is very high, therefore, the magnetic force can reach 20 times the magnetic force of the traditional barrel magnetic separator; the number of magnetic poles can reach 2-3 times the number of magnetic poles of the traditional barrel magnetic separator In the circumferential direction of the cylinder, the magnetic force distribution is very uniform; the magnetic separator has good overall performance and reliable operation; the price is lower than other rare earth magnet cartridge magnetic separators of the same type.
The technical parameters of the BX series permanent magnet cylinder magnetic separator are listed in Table 9.
6. Longji Magnetics The characteristics of the company's permanent magnet cylinder magnetic separator are as follows: 1. Different magnetic circuits designed according to weak magnetic field, medium magnetic field and strong magnetic field are advanced, reasonable, stable and durable, which can meet different selection requirements; The block group is positioned accurately and installed firmly to ensure that the magnetic block group does not fall off. The magnetic force is reduced by no more than 5% in eight years. The overall design is modular structure, easy to center and install, easy to maintain; 3 barrels are wear-resistant stainless steel ends Cover, high strength, good wear resistance; 4 double row spherical roller bearings can be easily inspected without removing the cylinder; 5 transmission system is simple in structure, easy to adjust, disassemble, and glued with special technology The wear-resistant rubber sheet on the outer surface of the cylinder is durable; the 6-slot structure is compact and reasonable, which can effectively prevent large foreign matter from entering and is easy to clean.
The main technical parameters are listed in Tables 10 and 11 and Table 12 in Figure 10.
7. The permanent magnetic cylinder magnetic separator and its main technical parameters for the production of tobacco ore are listed in Table 13. The Φ1200mm magnetic separator is a large-scale equipment developed by the North Mine Institute. It has large processing capacity, high magnetic induction intensity and deep magnetic field depth. Great advantages. The permanent magnet double cylinder magnetic separator produced by the plant and its technical parameters are listed in Table 14. The machine has the advantages of simple process flow, small number of configuration equipment, small floor space, low cost and easy automatic control. The external dimensions of the Φ600mm double cylinder magnetic separator are shown in Fig. 11.
These magnetic separators are suitable for sorting magnetite, pyrrhotite, roasting ore, recovering magnetite medium, and can also be used to remove ferromagnetic minerals before strong magnetic separators. They can be widely used in magnetite ore plants and heavy. media processing plant and selected coal plant.
8. QXC type rare earth permanent magnet magnetic separator is produced in Yankuang Mine. Because of the use of Titanium-iron-boron rare earth permanent magnet material, the magnetic field strength is high, which expands the separation range of magnetic minerals and improves the recovery rate of concentrates. The quality is more than 50% lighter than ordinary ferrite magnetic separator (so called "portable"), not only for the selection of ferrous metal ore and tailings re-election, but also for other powdery materials to remove magnetic impurities and The magnetic material is purified. Its technical performance is listed in Table 15.
9. Jiangsu Baolong The permanent magnet cylinder magnetic separator produced by the company in recent years uses ferrite or rare earth permanent magnet materials. Among them, the CTB-1218 and CX-1218 permanent magnet cylinder magnetic separators with new magnetic system developed in the early 1980s have the advantages of high magnetic induction, large magnetic field depth, large processing capacity and good sorting effect. The specifications and performance of the permanent magnet cartridge magnetic separator produced by the plant are listed in Table 16.
10. Xinhai Mining Machine The company produces CT type, HPC type and HL type permanent magnet type magnetic separator. The technical parameters of HL type permanent magnet type magnetic separator are shown in Table 17.
At present, many manufacturers produce wet-type permanent magnet cartridge magnetic separators, which are common common models, and will not be introduced here.
11. Guangzhou Nonferrous Institute ZCT series weak magnetic, medium magnetic cylinder magnetic separator, ZCT series cylinder magnetic separator.
ZCT series cartridge magnetic separator is a new magnetic separator developed by Guangzhou Nonferrous Institute. Compared with the traditional cartridge magnetic separator, it has the following characteristics:
The magnetic system is made of high-quality ferrite or compounded with rare earth materials. The magnetic circuit is reasonable and the gradient is high, and the magnetic performance is stable. According to the needs of users, it can provide downstream, countercurrent, semi-reverse and double-tube magnetic separators. The equipment structure is simple. Large processing capacity, easy operation and easy maintenance.
Scope of application: Separation of minerals such as magnetite, imaginary hematite, weathered magnetite, pyrrhotite and roasting magnetite; as a check device for strong magnetic separators, removing iron impurities from ferromagnetic minerals, In order to prevent clogging; non-metallic ore removal of iron, recycling and reuse of magnetic heavy medium; suitable for recovering useful minerals from weak magnetic separation tailings, expanding the comprehensive utilization of resources; also for water in steel plants and power plants deal with.
The technical parameters of this series of weak magnetic and medium magnetic cylinder magnetic separator are shown in Table 18.
   Figure 9  Figure 10  Figure 11
   Table 7  Table 8  Table 9  Table 10  Table 11  Table 12  Table 13  Table 14  Table 15  Table 16
Table 17 Â Table 18
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