Dry type pre-separation method for strong magnetism-weak magnetism mixed type iron ore

A hybrid, strong magnetic technology, applied in the direction of magnetic separation, chemical instruments and methods, solid separation, etc., can solve the problems of poor efficiency of sorting fine crushed ore, complex process configuration, small increase in concentrate ore, etc., to reduce tailings The ore grade and process configuration are simple and compact, and the effect of space-saving configuration

Inactive Publication Date: 2017-06-13
BGRIMM MACHINERY & AUTOMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor efficiency of conventional magnetic drum equipment for sorting fine crushed ore, problems such as unclear separation of fine tailings, serious inclusions, low tailing volume, small increase in concentrate ore, high tailings grade, complex process configuration, and difficult adjustment of indicators are caused.

Method used

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  • Dry type pre-separation method for strong magnetism-weak magnetism mixed type iron ore
  • Dry type pre-separation method for strong magnetism-weak magnetism mixed type iron ore
  • Dry type pre-separation method for strong magnetism-weak magnetism mixed type iron ore

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Embodiment 1

[0030] This example is used to illustrate the dry pre-separation method of strong magnetic-weak magnetic mixed type iron ore provided by the present invention, specifically the dry pre-separation method of vanadium-titanium magnetite. Such as figure 2 As shown, it includes the steps:

[0031] 1) The strong magnetic-weak magnetic mixed type iron ore is fed into the upward suction combined dry separation machine (or magnetic asynchronous separation dry separation machine), and the strong magnetic minerals are obtained by using the upward suction combined dry separation operation. The selection is to set the main selection belt and the auxiliary selection belt in the upward suction combined dry separator (or magnetic asynchronous separation dry separator). The ore falls on the auxiliary belt; the main belt is equipped with an upper magnetic system, and the auxiliary belt is equipped with a magnetic roller, and the main belt and the auxiliary belt are combined for dry separation...

Embodiment 2

[0037] The dry type pre-separation method of vanadium-titanium magnetite, step is with embodiment 1, and concrete technology is:

[0038] The vanadium-titanium magnetite with a particle size of ≤12mm after crushing and screening is sent to the up-suction combined dry separator through the conveying belt for sorting, and the main belt speed of the up-suction combined dry separator is set to 3.5m / s , the belt speed of the auxiliary belt is 2.5m / s, the magnetic field strength of the main belt is 800 Oersted, and the magnetic field strength of the auxiliary belt is 3500 Oersted.

[0039] Weak magnetic ilmenite and gangue obtained by weak magnetic separation are put into high magnetic strong magnetic machine for processing. Set the magnetic field strength of the high magnetic force strong magnetic machine to 7000 Oersted, and the rotating frequency of the cylinder to 50 Hz. After being processed by a high-power strong magnetic machine, a strong magnetic concentrate (that is, a wea...

Embodiment 3

[0042] The dry type pre-separation method of vanadium-titanium magnetite, step is with embodiment 1, and concrete technology is:

[0043]The vanadium-titanium magnetite with a particle size of ≤12mm after crushing and screening is sent to the up-suction combined dry separator through the conveying belt for sorting, and the main belt speed of the upper-suction combined dry separator is set to 3.0m / s , the belt speed of the auxiliary belt is 1.8m / s, the magnetic field strength of the main belt is 800 Oersted, and the magnetic field strength of the auxiliary belt is 3500 Oersted.

[0044] Weak magnetic ilmenite and gangue obtained by weak magnetic separation are put into high magnetic strong magnetic machine for processing. Set the magnetic field strength of the high magnetic force strong magnetic machine to 7000 Oersted, and the rotating frequency of the cylinder to 30 Hz. After being processed by a high-power strong magnetic machine, a strong magnetic concentrate (that is, a w...

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Abstract

The invention provides a dry type pre-separation method for strong magnetism-weak magnetism mixed type iron ore. The method comprises the steps that 1, strong magnetism-weak magnetism mixed type iron ore is fed into an upper suction type combined dry separator (or a magnetic asynchronous separation dry separator), strong magnetism mineral is obtained through operation of upper suction type combined dry separation, and upper suction type combined dry separation is carried out through a main separation belt and an auxiliary separation belt; 2, weak magnetism ore and gangue are separated from magnetic separation tailings obtained in the step 1 through high-magnetic-force strong magnetism separation, and therefore multi-stage magnetism asynchronous separation of mixed type iron ore is achieved. According to the dry type pre-separation method for strong magnetism-weak magnetism mixed type iron ore, the technological process is short, process configuration is simple and compact, the separation efficiency is high, the discard rate is greatly improved, the tailing grade is lowered, the concentrate grade is improved, the mineral separation cost spent on equipment operation, ore conveying and abrasion is reduced, and metal loss is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of mineral dressing, and in particular relates to a magnetic mineral processing method. Background technique [0002] "Early throwing and early harvesting" is one of the basic principles of beneficiation to achieve energy-saving and efficient production. The indicators of dry pre-separation directly affect the economic interests of the concentrator, especially in recent years when the overall form of the mining industry is weak and the ore price is at a low level. How to reduce production costs as much as possible is the key to the survival of enterprises. [0003] Strong magnetic-weak magnetic mixed type iron ore contains both strong magnetic useful minerals and weak magnetic useful minerals. Taking vanadium-titanium magnetite as an example, it contains both strong magnetic magnetite and weak magnetic ilmenite. Panxi area is the main ore-forming belt of vanadium-titanium magnetite in my country, and it is...

Claims

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Application Information

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IPC IPC(8): B03C1/02
CPCB03C1/02
Inventor李国平尚红亮史佩伟冉红想王芝伟彭欣苓赵海亮成磊魏红港王晓明
OwnerBGRIMM MACHINERY & AUTOMATION TECH CO LTD