Magnetite pretreatment device

Abstract

A magnetite pretreatment device comprises a cutting system, a screening system, a washing system, a magnetic separation system and a flotation system which are sequentially arranged from top to bottom. According to the cutting system, the ore raw materials are cut three times in sequence, the cutting effect is good, the efficiency is high, and the situation that during the follow-up machining process, the ore size is too large, so that a machine gets stuck, can be effectively prevented. Meanwhile, the cutting system can adjust the number of the parts, extending into the corresponding working grooves, of the rotary cutters according to the size of ore raw materials and the cutting requirements, so that the cutting efficiency is changed, and the work scheduling is flexible. According to thescreening system, the mineral aggregate is screened through the vibration and the wind power, so that the screening efficiency is effectively improved. According to the magnetic separation system, through the design of the two layers of conveying crawler belts and the shifting plates, more magnetic separation heads can be used for magnetic separation at the same time, the magnetic separation efficiency is improved, and themetallic magnetite can be rapidly and effectively separated out.

Description

technical field [0001] The invention belongs to the technical field of mineral processing equipment, and in particular relates to magnetite pretreatment equipment. Background technique [0002] Mining and deep processing of ores, especially metal ores, are the basic sources of the heavy industry. In the mining and utilization, there is a link of magnetite pretreatment. When this link is properly operated, it can not only greatly improve the beneficiation efficiency, reduce loss but also reduce emission pollution. Magnetite refers to the ore of the oxide mineral magnetite. Magnetite is mostly a granular aggregate with uneven fracture, hardness 5.5-6.5, density 5.16-5.18g / cm3, and strong magnetism. [0003] The following problems exist in the current magnetite pretreatment equipment: the current mineral processing equipment still has poor crushing effect, and it is easy to cause jamming or even damage of subsequent processing machines in the subsequent mineral processing pro...

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Problems solved by technology

[0003] The following problems exist in the current magnetite pretreatment equipment: the current mineral processing equipment still has poor crushing effect, and it is easy to cause jamming or even damage of subsequent processing machines in the subsequent mineral processing process due to excessive ore particles.

Because magnetite is mostly a granular aggregate; the hardness is 5.5 to 6.5; , it is difficult to completely split the ore into small enough small sizes, and the processing surface is very uneven, which can easily lead to excessive product size and quality; secondly, because of the strong magnetic physical properties of magnetite, the larger the size, the more magnetic The stronger it is, if the conventional contact crushing scheme is directly adopted, it is easy to cause the ore to adsorb or even adhere to the machine equipment and the cutter head, which is not only not conducive to processing, but also easily causes the machine to jam; thirdly, because the magnet Due to the high-hardness physical properties of ore, if the conventional contact crushing scheme is directly used for violent splitting and fragmentation, high-frequency and large quantities of high-kinetic-energy avalanches will be ejected during the processing process, which is extremely harmful to machines and workers. Potential safety hazards, and will greatly reduce the life of the machine

The devices disclosed in the prior art also have defects such as complex structure, various systems, bulky volume, large floor space, and high cost.

[0008] In addition, other existing devices are relatively simple to sieve ore according to the particle size. They are all simply sieved with a screen, or directly cut and then magnetically separated and will not sieve according to the ore size particles, and the screening and classification accuracy is poor. Extremely low, making it difficult for ores with different particle sizes to be screened out by magnetic separation in the subsequent magnetic separation process, which affects the beneficiation effect

Most of the pretreatment equipment simply wash the ore raw materials with clean water or perform magnetic separation or flotation without cleaning, and the obtained ore has high impurity content and poor quality

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