A low-power and energy-saving high-gradient magnetic separator for mineral processing

Abstract

The invention discloses a low-power-consumption energy-saving high-gradient magnetic separator for mineral separation, and the magnetic separator comprises a rack, a magnetic separation part, a magnetic system, a tube system and a collecting part. The rack comprises a lower base and an upper supporting frame, and the magnetic separation part is mounted on the lower base. The magnetic system is fixedly mounted outside the magnetic separation part through the upper supporting frame, and the magnetic separation part is of a hollow cavity structure and is provided with a magnetic separation cavitywall. The magnetic system comprises a spiral tube, a collecting disc, a traction rope, a lifting device and permanent magnets, wherein the spiral tube is attached to the outer part of the magnetic separation part and is tightly and spirally arranged; the plurality of permanent magnets are tightly and sequentially arranged in the spiral tube; and the lifting device is used for pulling or releasingthe traction rope so as to lift or release the permanent magnets. The permanent magnets are adopted as the magnetic system, and an electromagnetic coil and a control system thereof are omitted, thereby solving the technical problems that in the prior art, a high-gradient magnetic separator is large in energy consumption and a cooling system is complex in structure, reducing the complexity of thecomplex structure of the magnetic separator, and reducing the manufacturing, using and maintaining cost.

Description

technical field [0001] The invention relates to a high-gradient magnetic separator, in particular to a low-power-saving and energy-saving high-gradient magnetic separator for ore dressing used for magnetic separation from fluid ore pulp. Background technique [0002] In the history of human mineral extraction, magnetic field has been used for magnetic separation of minerals for more than 100 years. Due to the constraints of the development of basic science such as theory and materials, the initial magnetic separator has not been widely used. Since the use of electromagnets to generate magnetic fields in 1855, the theory and practice of magnetic separators have become more and more perfect. Various types of industrial magnetic separation equipment have emerged in the industry, and magnetic separation has been widely used in iron ore beneficiation. application. After the 1960s, with the continuous development of material science, the magnetic field strength of permanent magne...

AI Technical Summary

Problems solved by technology

The high-gradient magnetic separators in the prior art mostly use electromagnetic coils to generate the magnetic field, which has the advantages of convenient control and high magnetic field strength, which can reach more than 1.5T, and the magnetic field strength can be adjusted by adjusting the current. The disadvantages are also obvious. Because the electromagnetic coil is used, it needs a large current when generating a magnetic field, and its power consumption is huge. It is a famous "electric tiger". In the field of mineral magnetic separation, not all magnetic separation processes are It is necessary to use a magnetic field above 1.5T for magnetic separation. Therefore, in many rough or weak magnetic separation occasions, the use of electromagnetic coil type high gradient magnetic separator is often "overkill".

Moreover, when the coil is energized to generate a magnetic field, it will also generate huge heat due to eddy current effects and other reasons. The machine must control the heat to operate normally. Therefore, high-gradient magnetic separators that use electromagnetic coil magnetic separation need to be equipped with a set of complex oil Cold or water-cooled circulation system, which further increases the complexity and manufacturing cost of HGMS

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