This magnetic separator is mainly produced by the mining industry. In recent years, the North Mine Institute has also started production. Jiang Magnetic also developed and produced an inner cylinder permanent magnet magnetic separator in 1991.
1. CTG dry type permanent magnetic cylinder magnetic separator This magnetic separator is mainly produced by Shen Mine, Liaoyan Magnetic and Longji Magnet. It consists of sorting cylinder, fixed magnetic system, transmission device and feeding device. It consists of a box (product box) and a rack. The sorting cylinder is generally made of 2mm FRP with a layer of wear-resistant rubber on the surface. Magnetic strontium ferrite system permanent magnet blocks, which the wrap angle is 270 degrees, alternating magnetic polarity in the circumferential direction.
The magnetic separator was developed by the mining in the late 1970s and has two types: single cylinder and double cylinder. The length of the single-cylinder machine can be adjusted by the position of the baffle; the double-cylinder can adjust the declination of the magnetic system to suit the needs of different sorting processes (selection or sweeping).
This dry sorting machine is used for permanent dry fine fraction ferromagnetic mineral also apply to remove from the powdered material in the magnetic impurities and purification of magnetic material; in metallurgical, chemical, cement, ceramics, wheel, Grain and other sectors, as well as the treatment of materials such as soot and slag, have been increasingly used. The utility model has the advantages of simple process flow, elimination of dehydration operation such as concentration and filtration, small equipment quantity, small occupied area, water saving, low investment and low cost, and is suitable for drought and water shortage and cold regions in the north. Of course, there are disadvantages like dust and environmental pollution limits its scope of application, where the conditions of a wet separator beneficiation plant generally not a dry magnetic separator.
CTG dry magnetic separators are 600mm in diameter and 900mm in length. The box has two products and two products. The main technical parameters are listed in Table 1, and the outline and installation dimensions are shown in Figures 1 and 2.
Model meaning example CTG-69/3: C - magnetic separator, T - cylinder, G - dry, 6 - cylinder diameter (dm), 9 - cylinder length (dm), 3 - - Pole spacing (cm).
On the basis of the CTG dry magnetic separator, the sinking mine has produced the CTRG type dry double cylinder magnetic separator, which has two specifications: Φ400×800 and Φ500×900.
2. NTCS type internal cylinder type permanent magnet magnetic separator This machine was successfully developed by Jiang Magnetic and won the national patent in 1991. The dry magnetic separator has three magnetic field strengths, namely: I: strong magnetic, 900~1000mT, II: medium magnetic, 300~600mT, III: weak magnetic, 150~300mT. It can be widely used to remove ferromagnetic substances mixed in abrasives, ceramics, refractories, glass, cement, sugar, food and other materials, and can also be used for magnetic separation of minerals such as manganese , iron, copper and nickel .
The structure diagram of NTCS40 type I strong magnetic separator is shown in Figure 3. It consists mainly of feeding device, magnetic system, scraper, receiving trough, supporting wheel, motor and worm gear reducer and frame. The main structure of the series of internal cylindrical magnetic separators is the same, but the specifications, magnetic system and feeding and discharging methods are different.
The performance characteristics of the NTCS type internal cylinder magnetic separator are as follows.
(1) The thin-walled cylinder is used and closely attached to the surface of the permanent magnet magnetic system, and the inner surface of the cylinder is the magnetic separation working surface. Since the material is continuously tumbling in the cylinder, the inner surface of the cylinder where the material and the magnetic field are strongest can be obtained. Full contact, significantly improve the magnetic separation effect.
(2) The magnetic system design has a high gradient characteristic of the magnetic induction intensity on the inner surface of the cylinder, which significantly enhances the capturing ability of the weak magnetic material.
(3) The permanent magnet magnetic system is adopted, the operation cost is low, the overall structure is simple, and the work is reliable and safe.
(4) The movement of the material in the cylinder is a spiral swing, which has a long residence time and a large number of swings in the magnetic separation working area, and the sorting effect is good. Under the premise of ensuring the sorting effect, the tilt angle Q of the whole machine can be increased, the feed amount can be increased, and the processing capacity can be improved.
(5) The work is continuous. For materials of different nature, as long as the model is selected properly, one sorting can meet the requirements.
Model meaning example NTCS60I (II, III): NT - inner cylinder type, CS - magnetic separator, 60 - cylinder inner diameter (an), I (II, III) - strong magnetic (medium magnetic, weak magnetic ).
The main technical parameters of the NTCS internal cylinder magnetic separator are listed in Tables 2 and 3, respectively, and the external dimensions are shown in Figure 4 and Tables 2 and 3.
3. LGC Dry Magnetic Cylinder Magnetic Separator This dry permanent magnet magnetic separator is produced by Longji Magneto, mainly by sorting drum, magnetic system, transmission device, feeding device, box and frame. composition. The sorting drum is usually rolled by a stainless steel plate with high strength and the surface is covered with wear-resistant rubber. The magnetic system is composed of ferrite permanent magnets, and the magnetic system has an enveloping angle of 270 degrees, and the polarity of the magnetic poles alternates in the circumferential direction. The magnetic separator is divided into a single cylinder and a double cylinder. The length of the single cylinder magnetic separator can be adjusted by the position of the baffle; the double cylinder magnetic separator can be adapted to the needs of different sorting processes (selection or sweeping) by adjusting the magnetic declination. The technical performance is shown in Table 4, and the external dimensions are shown in Figures 5 and 6, respectively.
The dry type permanent magnetic cylinder magnetic separator is mainly used for dry sorting of fine-grained ferromagnetic minerals, and is also suitable for purifying magnetic impurities or magnetic materials from powdery materials. In the metallurgy, chemical, cement, ceramics, grinding wheel, grain and other industries, as well as the material handling of soot, slag has been increasingly widely used. The utility model has the advantages of simple process flow, dehydration operation without concentrating and filtering, small number of equipment, small occupied area, water saving, low cost and the like, and is suitable for dry and early water shortage and cold regions.
4. CTG type dry magnetic cylinder magnetic separator produced by CTG type and ZCT dry type permanent magnetic cylinder magnetic separator Liaoyan magnetic and ZCT dry type permanent magnetic cylinder type magnetic separator produced by Guangzhou Nonferrous Metals Co., Ltd. The main technical parameters are shown in Tables 5 and 6, respectively.
The dry type permanent magnetic cylinder magnetic separator has two types of products: two products and three products.
Model meaning example LGCS-70935: L - Longji logo, GC - dry magnetic separator, S - double drum (default is single drum), 7 - drum diameter dm, 09 - drum length dm, 3 , 5 - the pole distance cm.
   figure 1  figure 2  image 3  Figure 4  Figure 5  Figure 6
   Table 1  Table 2  table 3  Table 4  Tables 5 and 6
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