Berapa Banyak Jenis Pemisah Magnetik?

Pemisahan magnetik is a fundamental mineral processing technique that separates materials based on their magnetic properties. The magnetic separator machine can effectively select a large number of magnetic minerals, such as magnetite, hematite, limonite, manganese siderite, wolframite, ilmenite, manganese ore, manganese carbonate, metallurgical manganese ore, iron ore, kaolin, manganese oxide ore, and rare earth ore. In this guide, we break down the various classification methods for peralatan pemisahan magnetik.

According to the state of the material, the magnetic separators are divided into dry-type magnetic separators dan wet-type magnetic separators. The dry magnetic separator refers to the material keep dry, don’t need to be mixed with water in the magnetic separation process. The material for a wet magnetic separator must be mixed with water or other media.

Struktur

The dry magnetic separator generally does not need a tank for accommodating the slurry, and the material is conveyed by a vibrating feeding device; a dustproof device is often provided. The wet magnetic separator has a tank to accommodate the slurry to maintain the fluidity of the material, and the slurry is usually transported by a pompa lumpur.

Mineral Size

Dry magnetic separation functions for bulk, coarse particle separation, but also fine mineral separation, while wet magnetic separator can not sort large bulk minerals; most are effective for fine or even fine particles, except for a few models that can select coarse particles. HGMS (high gradient wet magnetic separator) can sort micron-sized materials using a suitable magnetically permeable medium.

Water Requirements

Dry magnetic separation requires low water content, dry materials, good liquidity, do not adhesion agglomeration.
Operasi pemisahan magnetik basah memiliki persyaratan tertentu pada konsentrasi bubur. Tidak ada batasan yang jelas tentang konsentrasi pemisahan magnetik kasar, tetapi konsentrasi material tidak boleh terlalu rendah untuk secara efektif mengontrol gaya fluida negatif selama operasi pemrosesan mineral. Saat memilih partikel halus secara magnetis, konsentrasinya harus tinggi untuk memastikan pemulihan mineral magnetik.

Advantages and Application

Dry weak magnetic separators have features like a simple process, low investment, and low water consumption. However, the bottleneck of the dry cylinder magnetic separator is that the dust is difficult to control; as environmental protection requirements become stricter, the dry type magnetic separation is gradually replaced by the wet weak magnetic separator. At present, the fine-grained dry magnetic separation machine is only used in water-shortage areas and severe cold areas.

According to the magnetic field strength, the magnetic separators are divided into three types: weak magnetic separator (low-intensity magnetic separator), medium magnetic separator, and strong magnetic separator (high-intensity magnetic separator).
Pemisah magnetik lemah adalah dari beberapa ratus hingga 3000 Gs; pemisah magnetik yang kuat umumnya mengacu pada 3000Gs hingga 6000 Gs, dan pemisah magnetik medan magnet menengah di antara keduanya.

Alasan mengapa diklasifikasikan menurut kekuatan medan magnet terkait dengan sifat magnetik dari berbagai mineral umum (tulisan lain -). Klasifikasi Mineral Magnetik). Namun demikian, perlu diketahui bahwa tidak ada standar mutlak untuk kekuatan magnet yang berbeda dan peralatan yang cocok.

Magnetic Field Strength

In the actual magnetic separation machine, the magnetic field strength ranges from hundreds of Gauss to 20,000 Gauss; some even exceed 20,000 Gauss, but it is rarely used in general beneficiation production. Excessive magnetic field strength will lead to weak magnetic minerals to agglomerate that is not conducive to beneficiation. So the upper limit of the magnetic field strength of the strong magnetic separator is 20000Gs.

On the working surface of various magnetic separators, the magnetic field strength varies at different points and in different ranges, and the working magnetic field is a non-uniform magnetic field. Generally, the value of the magnetic field strength expressed refers to the maximum. magnetic strength; some factories may list the average value.

According to the type of magnetic field, the magnetic separators are divided into permanent magnet magnetic separators dan electromagnetic magnetic separators.
Pemisah magnet magnet permanen menggunakan bahan magnet permanen seperti ferit atau boron besi neodymium untuk menghasilkan medan magnet yang bekerja, dan pemisah magnet elektromagnetik menggunakan magnet dengan kuk, solenoida, dan magnet untuk menghasilkan medan magnet.

Magnetic Field Strength

Kekuatan medan magnet pemisah magnet magnet permanen adalah tetap, tetapi area aksi yang berbeda di permukaan kerja pemisahan magnet dapat dirancang untuk memiliki kekuatan medan magnet yang berbeda. Pemisah magnetik elektromagnetik dapat menyesuaikan seluruh medan magnet, tetapi nilai kekuatan medan magnet di permukaan kerja adalah medan magnet yang seimbang dan seragam.

Konsumsi Daya

Energi magnetik pemisah magnetik magnet permanen rendah, sedangkan pemisahan elektromagnetik membutuhkan konsumsi energi yang tinggi untuk menghasilkan arus eksitasi. Konsumsi energi per unit pemisah magnet permanen jauh lebih rendah daripada pemisah magnet elektromagnetik.

According to the structure of the main working part of the magnetic separator, it is divided into cylindrical (drum) magnetic separator, roller magnetic separator, disc magnetic separator, ring magnetic separator, in addition, have rotor magnetic separator, belt magnetic separation, conical magnetic separator, but these types of magnetic separators have been used less.

Cylindrical/Drum magnetic separator: Most common for both dry/wet separation
Roller magnetic separator: High-precision sorting for fine materials
Disc magnetic separator: Multi-stage separation capability
Ring magnetic separator: Continuous processing of slurry materials

According to the way the magnetic field strength changes, the magnetic separators are divided into:

1) Constant magnetic field magnetic separator: Using a permanent magnet material and a direct current electromagnet, a solenoid, or the like as a magnetic source, the magnitude and direction of the magnetic field strength do not change with time.
2) Alternating magnetic field magnetic separator: An electromagnet that is connected to an alternating current is used as a magnetic source. The magnitude and direction of the magnetic field strength change over time.
3) Pulsating magnetic field magnetic separator: An electromagnet that simultaneously transmits direct current and alternating current is used as a magnetic source. The magnitude of the magnetic field varies with time, but the direction does not change. And pulse
Mirip dengan pemisah magnetik dinamis, penggunaan aliran air yang berdenyut menyebabkan bubur berdenyut, yang mempengaruhi kekuatan pemilahan mineral yang dipilih secara magnetis.
4) Rotating magnetic field magnetic separator: A magnet is used as the magnetic source, and the magnetic pole rotates around the axis. The magnitude and direction of the magnetic field strength change over time.

Menurut whether the magnetic mineral is reversed in the magnetic field of the magnetic separator, it is divided into a mineral reversal magnetic separator dan non-reversal magnetic separator.
Pemisah magnetik pembalikan mineral dapat secara efektif meningkatkan kadar konsentrat, dan pemisah magnetik Non-pembalikan dapat memilih mineral magnetik lemah yang tahan api.

According to the minerals, it also can divide into such as magnetite magnetic separator, hematite magnetic separator, manganese ore magnetic separator, quartz sand magnetic separator, NdFeB magnet, nickel, etc.

Selain jenis yang tercantum di atas, ada banyak cara untuk mengklasifikasikan pemisah magnetik. Meskipun setiap produsen memiliki metode klasifikasi sendiri, namun tidak memiliki standar. Pada tahap pemilihan model pemisah magnetik, sebagian besar lebih suka menggunakan nama campuran, seperti "pemisah magnetik basah hematit", sebenarnya menunjukkan bahwa mineral penyortiran adalah hematit, dan metode pembalutan bijih adalah tipe basah, tetapi tidak menunjukkan kepada kita apakah pemisah magnetik adalah tipe magnet permanen atau tipe elektromagnetik, dan tidak ada yang menunjukkan struktur pemisahan magnetik mana yang menjadi peralatan tersebut.

JXSC offers custom magnetic separation solutions—from lab-scale testing to full-scale production—ensuring optimal recovery rates for minerals like iron ore, manganese, tungsten, and rare earths. Contact our team for expert guidance, equipment selection, and global logistics.