Ferromagnetic mineral particle classification recovery device

Abstract

The invention discloses a classification and recovery device for ferromagnetic mineral particles, which comprises a shell, a classifier, a spiral guide plate and a magnetic field generating mechanism; Connected feeding channel, the ferromagnetic mineral particle slurry enters the inside of the classifier tangentially from the feeding channel, the upper part of the classifier is also provided with a plurality of upper discharge channels, and the lower part of the classifier is provided with a plurality of lower discharge channels; The spiral guide plate is arranged in the classifier, and the spiral guide plate is spirally arranged around each upper discharge channel, and the outer diameter of the spiral guide plate increases sequentially from top to bottom; the magnetic field generating mechanism includes a three-phase AC power supply and sequentially arranged from top to bottom A plurality of coil groups, each coil group is connected to a three-phase AC power supply, and each coil group generates a spiral downward magnetic field force after being energized. The invention has the advantages of simple structure, energy saving and high efficiency, high grading precision, and various magnetic particles with different particle sizes can be obtained.

Description

technical field [0001] The invention belongs to the technical field of mineral classification, and in particular relates to a classification recovery device for ferromagnetic mineral particles. Background technique [0002] At present, the classification of ferromagnetic minerals is generally divided into coarse screening and precise screening after coarse screening. Coarse screening generally uses a rotary vibrating screen for screening. This method has low classification accuracy and contains more non-magnetic impurities in the same particle size range. Especially when obtaining a variety of products with different particle size ranges, the efficiency is extremely low. Accurate screening is used when obtaining particles with high particle size accuracy. The common accurate screening methods generally include airflow classification and screening, water flow classification and screening, and JZDF nitrogen protection classification and screening for iron powder that is easy t...

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Problems solved by technology

The patent with the notification number CN201906649U discloses a water flow classification system for abrasive particles, including a booster pump, an automatic pressure regulating valve, a control valve, a flow meter, a feeding valve and a conical classification bucket, and the booster pump is connected to the automatic pressure regulating valve , the automatic pressure regulating valve is connected with the control valve, the control valve is connected with the conical grading barrel, the flow meter is connected between the control valve and the conical grading barrel, there is an overflow port at the upper end of the conical grading barrel, and the bottom of the conical grading barrel There is a water inlet, and the water inlet is connected with the feeding valve. There is a water inlet at the bottom of the conical grading bucket, and the water inlet is connected with the feeding valve. There are at least two conical grading buckets, and they are connected from small to large. The overflow port of the cone-shaped grading bucket is connected to the water inlet of the next conical grading bucket. When using the above-mentioned water flow grading system to classify the particles, it is necessary to classify the ground particles through multiple conical grading buckets, which consumes too much water resources. , the degree of automation is low, the classification accuracy is small and there are many impurities in the particles

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