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Separation method of low-grade magnetic minerals

A low-grade, sorting technology, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of low sorting rate, high sorting cost, difficult economic benefits, etc., to improve the sorting grade , reduce the amount of sorting, reduce the effect of energy consumption

Inactive Publication Date: 2015-12-30
PANGANG GRP MINING
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Problems solved by technology

However, when the raw ore grade is low (that is, the so-called low-grade magnetic minerals), the separation rate of the concentrate product of the quality required for production is generally low through the above separation methods, and the separation cost is high, so it is difficult to have economic benefits.

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0023] The invention provides a sorting method for low-grade magnetic minerals, such as figure 1 As shown, the sorting method includes the following steps:

[0024] First, the crushing step: using a crusher (such as a gyratory crusher or a cone crusher) to crush the low-grade magnetic minerals to obtain the crushed low-grade magnetic minerals;

[0025] Second, the preliminary tailing removal step: use a dry bulk magnetic separator to perform a dry tailing process on the crushed low-grade magnetic minerals, so as to remove part of the non-magnetic minerals in the crushed low-grade magnetic minerals and / or weakly magnetic minerals are discarded as tailings;

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Abstract

The invention relates to the field of separation of magnetic minerals and discloses a separation method of low-grade magnetic minerals. The separation method comprises following steps: firstly, a step of crushing: the low-grade magnetic minerals are crushed, and crushed low-grade magnetic minerals are obtained; secondly, a step of primary tailing discarding: the crushed low-grade magnetic minerals are processed with a dry type tailing discarding technology; thirdly, a step of roll grinding grading: the step of roll grinding grading comprises following substeps: i), roll grinding; ii), primary grading; iii), shunting; fourthly, a step of secondary tailing discarding: second separating materials are processed with a wet type tailing discarding technology by a strongly magnetic separator. According to the separation method of the low-grade magnetic minerals, minerals with low separation significance are firstly crushed and discarded as tailings, so that the separation quantity for follow-up mineral separation steps is reduced, the energy consumption is reduced, and the production capacity is improved.

Description

technical field [0001] The invention relates to the field of separation of magnetic minerals, in particular to a method for separation of low-grade magnetic minerals. Background technique [0002] Currently known separation methods for magnetic minerals mainly include: traditional open (closed) circuit crushing-grinding-weak magnetic separation-gravity separation (strong magnetic separation)-electric separation (flotation). Similar sorting methods generally have a long process and high management costs, and usually a certain type of mineral is sorted out first and then another type of mineral is sorted out (for example, when sorting low-grade vanadium-titanium magnetite, usually Choose iron first, then titanium). In addition, when the grade of ore is high, through the above sorting method, concentrate products meeting industrial production standards can be obtained. However, when the raw ore grade is low (that is, the so-called low-grade magnetic minerals), the separation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 王洪彬王勇王建平和芳方张春肖良初王小东
Owner PANGANG GRP MINING
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