Magnetic ore dressing method

A beneficiation method and ore technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve problems such as difficulty in obtaining high-efficiency enrichment of ilmenite and complicated process flow, so as to reduce energy consumption and simplify the process flow , The effect of reducing the process cost

Active Publication Date: 2012-07-04
CHANGSHA RES INST OF MINING & METALLURGY
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Problems solved by technology

[0005] CN101564707A Chinese patent document discloses a method for screening vanadium-titanium magnetite, which adopts a three-stage grinding stage selection process, and the process flow is complicated
[0006] CN101791588A Chinese patent document discloses a sorting method for low-grade vanadium-titanium magnetite, which uses a low magnetic field magnetic roller for pre-selection. Although this part of valuable magnetic minerals can be recovered from low-grade vanadium-titanium magnetite resources, but Among them, the associated ilmenite is difficult to be enriched efficiently
[0007] CN102225358A Chinese patent literature discloses a method for beneficiation of vanadium-titanium magnetite, which starts pre-selection from -3mm, which is mainly aimed at the enrichment of strong magnetic iron minerals, and does not involve the recovery of valuable minerals ilmenite

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] a kind of like figure 1 The beneficiation method of the magnetic ore of the present invention shown may further comprise the steps:

[0028] (1) Pretreatment: firstly, the raw magnetic ores containing different ratio magnetic susceptibility coefficients (such as the iron ore type mixed with magnetite and hematite, or the type of vanadium-titanium magnetite and ilmenite) are subjected to coarse crushing in sequence And fine crushing operations, so that the magnetic minerals and non-magnetic minerals can achieve partial monomer dissociation, ready to enter the pre-selection;

[0029] (2) pre-selection: select a ZCLA pre-selector (this embodiment adopts the magnetic separator disclosed in No. CN101648162A Chinese patent document), this ZCLA pre-selector has a magnetic separation area composed of different magnetic circuits by various perma...

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Abstract

The invention provides a magnetic ore dressing method. The magnetic ore dressing method comprises the steps of raw core coarse crushing, fine crushing, ZCLA presorting, ore grinding, ZCLA sorting, and strong magnetic flow and weak magnetic flow implementing of ore concentrate subjected to ZCLA sorting. Compared with the general magnetic core dressing process, the magnetic ore dressing method has the advantages that by a section of sorting operation, valuable ores with different magnetic differences and wider particle size range in the magnetic ores can be gathered and sorted, and before the low-magnetic ores are sorted by a strong magnetic separator, the iron does not need to be removed in advance, the sorted particle range is wide, the whole sorting process is simple and the sorting effect is good.

Description

technical field [0001] The invention belongs to the field of beneficiation of ferrous metal ore, in particular to a beneficiation method of magnetic mixed ore. Background technique [0002] At present, in the mineral processing industry, the magnetic separation method is generally used for the magnetic ore enrichment method containing magnetic valuable minerals. Such as the enrichment of magnetite, vanadium-titanium magnetite, hematite, limonite, manganese ore, ilmenite and chromite, etc., usually by magnetic separation. As far as the specific subdivision of this kind of magnetic mineral magnetic separation method is concerned, the low magnetic field magnetic separation enrichment method (commonly known as weak magnetic separation method) is used for strong magnetic ore (magnetite), and for weak magnetic minerals (hematite, brown Iron ore, rhodochrosite, ilmenite and chromite) are enriched by strong magnetic separation (commonly known as strong magnetic separation). The pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/005B03C1/02
Inventor 曾维龙柳衡琪安登气李辉跃曾尚林陈志强
Owner CHANGSHA RES INST OF MINING & METALLURGY
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