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Combined mineral processing technology of low-grade laterite type weathering titanium placers

A titanium placer, low-grade technology, applied in the field of low-grade laterite type weathered titanium placer combined beneficiation process, can solve the problems of resource waste, abandonment, etc. Effect

Active Publication Date: 2013-01-09
KUNMING METALLURGY INST
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the existing beneficiation process is only suitable for low-grade titanium placer with a content of more than 5% in the raw ore, and low-grade titanium placer with a titanium dioxide content of less than 5% in the raw ore or a titanium dioxide content that has been processed by other beneficiation processes. 2-20% of the tailings cannot be re-selected, and a large number of low-grade raw ore or tailings are discarded as waste, which is a serious waste of resources

Method used

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  • Combined mineral processing technology of low-grade laterite type weathering titanium placers

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: (Take tailings with a titanium dioxide content of 2.0% as raw material)

[0024] (1) Raw material preparation: use tailings with a titanium dioxide content of 2.0% after being processed by other beneficiation methods as raw materials; after adding water, after conventional stirring or grinding, the obtained fineness is 1-0.037mm;

[0025] (2) Weak magnetic separation: the pulp is in the magnetic separator, using wet weak magnetic separation process, wherein when the strength of the weak magnetic field is 0.05T, the obtained iron concentrate has an iron content of 15-70% and a titanium dioxide content of 5 ~30%; and the content of titanium dioxide in weak magnetic tailings is 5~40%;

[0026] (3) Strong magnetic separation: The weak magnetic tailings obtained in step (2) are subjected to strong magnetic separation treatment. When the strength of the strong magnetic field is 0.3T, the titanium dioxide content of titanium rough concentrate is 15-45 % and the ...

Embodiment 2

[0029] Embodiment 2: (take tailings with a titanium dioxide content of 5.0% as raw material)

[0030] Processing step is identical with embodiment 1, to containing TiO 2 After stirring or grinding 5.0% of the tailings, the selected particle size is -0.45mm; adopt the "weak magnetic-strong magnetic" beneficiation process to obtain titanium rough concentrate; the strength of the weak magnetic field is 0.2T; the strength of the strong magnetic field is 1.1 T, the yield of titanium rough concentrate is 18.60%, the content of titanium dioxide is 18.60%, and the recovery rate is 69.38%.

Embodiment 3

[0031] Embodiment 3: (Take tailings with a titanium dioxide content of 3.0% as raw material)

[0032] Processing step is identical with embodiment 1, to containing TiO 2 After 3.0% of the tailings are stirred or ground, the selected particle size is -0.45mm; the "weak magnetic - strong magnetic" beneficiation process is used to obtain titanium rough concentrate; the strength of the weak magnetic field is 0.13T; the strength of the strong magnetic field is 1.0 T, the yield of titanium rough concentrate is 4.60%, the content of titanium dioxide is 26.98%, and the recovery rate is 49.04%.

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Abstract

The invention relates to a combined mineral processing technology of low-grade laterite type weathering titanium placers and belongs to the technical field of mineral processing. The combined mineral processing technology includes subjecting raw materials with the titanium dioxide content of below 5% to low-intensity magnetic-high-intensity magnetic pre-treatment technologies, then gravity separation-regrinding-gravity separation, gravity separation-regrinding-flotation processing and regrinding-flotation processing. According to the combined mineral processing technology of the low-grade laterite type weathering titanium placers, by means of the low-intensity magnetic-high-intensity magnetic pre-treatment technologies, a large number of slurries which are rich in kaolin minerals can be cast, technological procedures can be simplified, obtained rough titanium concentrates have few slurries, and follow-up treatment can be easily performed, for example, the interference of the slurries is avoided when technologies such as flotation and tabling gravity separation are performed; the grade and the recovery rate of the obtained titanium concentrates are high, and high intensity magnetic separation is beneficial to recovery of fine-particle grade titanium particles; and by means of the technologies of gravity separation-regrinding-gravity separation, gravity separation-regrinding-flotation processing and regrinding-flotation processing, the recovery rate of titanium is high, simultaneously, the content of iron in mineral samples is increased, and additional values of products are improved.

Description

technical field [0001] The invention relates to a combined beneficiation process of low-grade lateritic weathered titanium placer, especially for the raw ore or tailings with a titanium dioxide content below 5%, the "weak magnetic-strong magnetic" pretreatment process is carried out first, and then the "gravity separation" is carried out. -Regrinding-gravity separation", "gravity separation-regrinding-flotation", "regrinding-flotation" combined mineral processing technology, which belongs to the field of mineral processing technology. Background technique [0002] China's titanium resource reserves rank first in the world, and titanium deposits with industrial value can be divided into two categories: magmatic titanium deposits (primary ores) and titanium placer deposits. According to different types of minerals, primary ilmenite can be divided into magnetite ilmenite and hematite ilmenite; placer deposits can be divided into rutile type placer and ilmenite type placer. Abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 张汉平刘玫华陈献梅乔吉波汤优优宋涛朱从杰简胜周士春李星海袁浩刘飞
Owner KUNMING METALLURGY INST
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