A Simple and Efficient Wet Magnetic Separation Method

A magnetic separation and wet technology, applied in wet separation, chemical instruments and methods, magnetic separation, etc., can solve the problems of uneven axial slurry flow distribution, long axial length of the tank body, and difficult magnetic separation process. Achieve the effect of solving the problem of magnetic mass inclusion, convenient feeding and unloading, huge economic and social benefits

Active Publication Date: 2017-02-22
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, all magnetic separation systems have short sorting belts and adopt the design of high slurry level in the tank body. Although the separation space and time can be expanded, the equipment is limited. Due to the long axial length and large volume of the tank body, the ultra-large magnetic separator There are problems of uneven axial slurry flow distribution and stress deformation of the tank body
[0005] For fine-grained ores with a particle size below 75 μm, the electrostatic force and van der Waals force between particles are important parameters that affect the separation index, making the magnetic separation process more difficult

Method used

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Examples

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Effect test

Embodiment 1

[0030] like figure 1As shown, a simple and high-efficiency wet magnetic separation method for ore powder with a tailings discharge port at the bottom of the tailings receiver. The ore powder to be separated is 49.58% iron, including magnetic iron and hematite, with a particle size of 75 μm The following accounts for 80% of iron ore.

[0031] The glass partition 2 is equipped with a liquid level port; the tailings receiver 3 is a wide-mouth plexiglass container with a groove on the upper end. The magnetic induction intensity generated by the magnet is 180mT-270mT when there is no water on the other side of the partition. Before sorting, use the magnet 1 to suck the iron ore powder M to be separated from the raw material carrier plate 4 through the partition 2, and then move the magnet 1, the partition 2 and the iron ore powder M to the tailings receiver 3 as a whole Fix the partition on the tailings receiver 3, add water from the liquid level port until the liquid level of th...

Embodiment 2

[0033] like figure 2 As shown, a simple high-efficiency wet magnetic separation ore powder method using a wide-mouth flat-bottomed tank as a tailings receiver. The ore powder to be selected is 30.81% iron grade, including magnetic iron, false hematite, hematite , 75% of the low-grade iron ore has a particle size below 75 μm.

[0034] The tailings receiver 3 is a glass wide-mouth flat-bottom tank with a height of 18mm. The magnetic induction intensity generated by the magnet 1 is 180-270mT when there is no water on the other side of the glass partition. Put the iron ore powder M in the tailings receiver 3, fill it with water, cover the glass partition 2, place the magnet 1 on the partition 2, form a magnetopolymer and sort it, and use the magnet for cleaning during the sorting process 1. Suction the concentrate F through the partition 2 and separate it from the tailings receiver 3. After the tailings slurry is discharged into the tailings pond, rinse with ring water and fill ...

Embodiment 3

[0036] like image 3 Shown, a kind of method of simple and efficient wet magnetic separation slurry with container wall as partition, the ore powder to be separated is iron grade 43.43%, including magnetic iron, hematite, and the iron ore whose grain size is below 75 μm accounts for 86%.

[0037] The tailings receiver 3 is a plexiglass flat-bottomed container with a liquid level port and a concentrate outlet on the top. The upper container wall of the tailings receiver 3 acts as a partition, and the plexiglass partition 2 is used for suction after sorting. Reserve and transfer the concentrate, the height of the sorting space is 23mm, and the magnetic induction intensity generated by the magnet is 190-300mT when there is no water on the other side of the partition. Fill the tailings receiver 3 with the slurry to be selected, fix the partition 2 on the tailings receiver 3, place the magnet 1 on the area of ​​the tailings receiver 3 that acts as a partition, and form a magnetopol...

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Abstract

The invention discloses a simple and efficient wet magnetic separation method. The magnetic separation components used in the method include: a magnet, a separator and a tailings receiver, and the separator and the tailings receiver are used to construct a sorting space, and the sorting space is filled with an aqueous solution of ore powder to be separated. In the present invention, the ore powder to be selected is firstly made to form "magnetic agglomerates" and "magnetic chains" on the other side of the partition under the action of the magnet, and then the magnet is reciprocated on the fixed partition, thereby prolonging the separation time , and make the ore powder produce "crowding action" and "throwing action", and then significantly improve the magnetic separation ability. For the low-grade iron ore with an iron grade of 30.81% and a particle size below 75μm accounting for 75%, after sorting, an iron concentrate with an iron grade of 67.36% and an iron recovery rate of 74.92% is obtained, which meets the requirements of sintering operations.

Description

technical field [0001] The invention relates to a method for sorting different magnetic minerals, in particular to a simple and efficient wet magnetic separation method. Background technique [0002] Wet magnetic separation is a beneficiation technology that uses the magnetic difference of materials to separate in water or magnetic liquid. Wet magnetic separation of ore is always an important processing link in the dressing plant. [0003] Wet magnetic separation can be divided into permanent magnetic wet magnetic separation and electromagnetic wet magnetic separation according to the different types of magnets. According to the different equipment structures, it can be divided into belt magnetic separator, drum magnetic separator, roller magnetic separator, disc magnetic separator Magnetic Separator, Ring Magnetic Separator, Cage Magnetic Separator and Pulley Magnetic Separator. The permanent magnet magnetic separation system is simple, and its main components are magneti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00B03C1/02
Inventor 王绍艳谭晓旭张天昊王一洋王月明田芳范嘉园
Owner UNIV OF SCI & TECH LIAONING
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