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Method for obtaining ultrafine grained titanium concentrate

An ilmenite concentrate and ultra-fine particle technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of inability to sort, low recovery rate, and high cost, and achieve reduced chemical consumption and high recovery rate. The effect of the indicator

Active Publication Date: 2016-09-28
CHANGSHA RES INST OF MINING & METALLURGY
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Problems solved by technology

When the combination of strong magnetic separation and centrifuge is used, the centrifuge is a batch-type beneficiation, which seriously affects the production efficiency, and the grade of crude titanium concentrate obtained through this process can only reach about 13%, and the recovery rate is also low. It is very low, and the reagent consumption and beneficiation effect are affected during flotation; while the suspension vibration beneficiation process belongs to flow film beneficiation, which requires materials to be distributed as thinly as possible on the beneficiation and separation surface, so on the one hand, this process requires a very large space On the other hand, how to evenly distribute the ore slurry to multiple suspension vibratory dressings will directly affect the subsequent obtained titanium concentrate indicators. It is difficult to obtain qualified concentrate products due to uneven distribution, and it is difficult to ensure the effect of industrial implementation.
Moreover, neither the centrifuge nor the suspension vibratory beneficiation can perform accurate separation according to the magnetic difference between ilmenite and non-ilmenite, but according to the difference in specific gravity of the material, and the separation is affected by the particle size and shape of the material. Influence, resulting in non-ilmenite being selected into the concentrate, and at the same time, ilmenite is brought into the tailings, the separation effect is not ideal
As for the -0.038mm ultra-fine ilmenite secondary to the current domestic crushing and grinding process, it is even more difficult to recover titanium concentrate from it because its particle size is too fine. Not only the separation effect is not obvious, but the cost is also high. It is very high, so the mines basically discharge it directly into the tailings pond, resulting in a waste of resources
[0003] Therefore, aiming at the difficult technical problem of recovering titanium concentrate from -0.038mm ultra-fine ilmenite, a kind of separation effect is ideal, and at the same time, TiO can be obtained. 2 The method of high-grade, ultra-fine-grained titanium concentrate is of great significance

Method used

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  • Method for obtaining ultrafine grained titanium concentrate

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Embodiment 1

[0026] In this embodiment, the method for obtaining ultra-fine-grained titanium concentrate is to use a certain fine-grained ilmenite in Panxi as raw material, and the raw material is TiO 2 The grade is 8.45%, and the material content of -0.038mm reaches 92.17%; figure 1 shown, including the following steps:

[0027] (1) Using the above-mentioned fine-grained ilmenite in Panxi as raw material, go through 3 times of flat-ring magnetic separation, wherein the strength of the magnetic field in the first flat-ring magnetic separation process is 10,000 Gauss; the second flat-ring magnetic separation process The strength of the middle magnetic field is 8000 Gauss; the intensity of the magnetic field is 7000 Gauss during the third flat-ring magnetic separation process; The medium box has a serrated medium tooth plate with a gap of 0.8mm, and the tooth spacing is 1mm); and the water pressure of the concentrate washing after each magnetic separation is guaranteed to be 0.3MPa, and the...

Embodiment 2

[0033] In this embodiment, the method for obtaining ultra-fine-grained titanium concentrate is to use a certain fine-grained ilmenite in Panxi as raw material, and the raw material is TiO 2 The grade is 8.45%, and the material content of -0.038mm reaches 92.17%; figure 1 shown, including the following steps:

[0034] (1) Using the above-mentioned fine-grained ilmenite in Panxi as raw material, go through 3 times of flat-ring magnetic separation, wherein the strength of the magnetic field in the first flat-ring magnetic separation process is 12000 Gauss; the second flat-ring magnetic separation process The strength of the middle magnetic field is 10000 Gauss; the intensity of the magnetic field is 8000 Gauss in the third flat ring magnetic separation process; in the three flat ring magnetic separation processes, the magnetic separators all adopt the magnetic separator with tooth plate medium box (tooth plate The medium box has a serrated medium tooth plate with a gap of 0.9mm,...

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Abstract

The invention discloses a method for obtaining ultrafine grained titanium concentrate. The method comprises the steps that 0.038 mm ilmenite materials serve as raw materials; horizontal ring magnetic separating, desliming by flotation, floating titanium roughing and floating titanium selection are sequentially conducted; and the ultrafine grained titanium concentrate with the TiO2 grade at 47%-48.5% is finally obtained, wherein the granularity of the ultrafine grained titanium concentrate is not larger than 0.038 mm. According to the method for obtaining the ultrafine grained titanium concentrate, ultrafine grained materials of 0.038mm grained ilmenite are effectively recycled, the ultrafine grained titanium concentrate with the TiO2 grade at 47%-48.5% is also obtained, and the recovery rate reaches 70% or above.

Description

technical field [0001] The invention belongs to the field of mineral products, and in particular relates to a method for obtaining ultrafine grade titanium concentrate. Background technique [0002] At present, in China, for ilmenite materials with a particle size of no more than 0.045mm, the combination of strong magnetic separation and centrifuge or suspension vibration separation is used for preliminary enrichment, and then the rough concentrate is recovered by flotation process to obtain titanium concentrate. When the combination of strong magnetic separation and centrifuge is used, the centrifuge is a batch-type beneficiation, which seriously affects the production efficiency, and the grade of crude titanium concentrate obtained through this process can only reach about 13%, and the recovery rate is also low. It is very low, and the reagent consumption and beneficiation effect are affected during flotation; while the suspension vibration beneficiation process belongs to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03C1/00B03D1/00
CPCB03B7/00B03C1/00B03D1/00
Inventor 安登气王洪彬曾维龙李辉跃曾尚林
Owner CHANGSHA RES INST OF MINING & METALLURGY
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