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Separation method of low-grade fluorite barite paragenic ore rich in calcite

A separation method and barite technology, which are applied in solid separation, wet separation, chemical instruments and methods, etc., can solve the problems of low fluorite concentrate grade and unrecyclable flotation return water, etc. The effect of selecting efficiency, reducing operating pressure and increasing hydrophilicity

Active Publication Date: 2020-06-19
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although the above-mentioned patent documents can recover fluorite and barite at the same time, this process adopts three kinds of medicament systems, and there are many kinds of medicaments, so that the flotation backwater cannot be recycled; and the grade of fluorite concentrate obtained by this method is also not high. Only 94~98%
[0011] In summary, we urgently need a kind of reasonable development of fluorite-barite paragenetic ore, especially a large number of low-grade ores with a fluorite content of less than 25%, so as to obtain high-quality acid-grade fluorite concentrate (CaF 2 ≥98%) and barite concentrate, and a separation method that can solve the problem that flotation backwater cannot be recycled

Method used

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  • Separation method of low-grade fluorite barite paragenic ore rich in calcite
  • Separation method of low-grade fluorite barite paragenic ore rich in calcite
  • Separation method of low-grade fluorite barite paragenic ore rich in calcite

Examples

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Effect test

Embodiment 1

[0048] A low-grade fluorite-barite paragenetic ore rich in calcite, the original ore mainly contains CaF 2 19.83wt%, BaSO 4 63.42wt%, CaCO 3 7.15wt%, its separation method is as figure 1 shown, including the following steps:

[0049] S1. Use jaw crusher and cone crusher to crush the raw ore in two stages to obtain crushed ore with a particle size of -20mm;

[0050] S2. Classify the crushed ore to obtain fine-grained ore with a particle size of -1mm, medium-grained ore with a particle size of +1-8mm, and coarse-grained ore with a particle size of +8-20mm;

[0051] S3. Using a fine-grain jig to perform jigging gravity separation on the medium-grained ore to obtain the medium-grained concentrate and tailings I;

[0052] S4. Use a coarse-grained jig to perform jigging gravity separation on the coarse-grained ore to obtain the coarse-grained concentrate and tailings II;

[0053] S5. Merge the medium-sized ore concentrate and the coarse-grained ore concentrate to obtain BaSO-co...

Embodiment 2

[0061] A low-grade fluorite-barite paragenetic ore rich in calcite, the original ore mainly contains CaF 2 24.36 wt%, BaSO 4 58.15wt%, CaCO 3 8.13wt%, its separation method is as figure 1 shown, including the following steps:

[0062] S1. Use jaw crusher and cone crusher to crush the raw ore in two stages to obtain crushed ore with a particle size of -15mm;

[0063] S2. Classifying the crushed ore to obtain fine-grained ore with a particle size of -1mm, medium-grained ore with a particle size of +1-5mm, and coarse-grained ore with a particle size of +5-15mm;

[0064] S3. Using a fine-grain jig to perform jigging gravity separation on the medium-grained ore to obtain the medium-grained concentrate and tailings I;

[0065] S4. Use a coarse-grained jig to perform jigging gravity separation on the coarse-grained ore to obtain the coarse-grained concentrate and tailings II;

[0066] S5. Merge the medium-sized ore concentrate and the coarse-grained ore concentrate to obtain BaS...

Embodiment 3

[0074] A low-grade fluorite-barite paragenetic ore rich in calcite, the original ore mainly contains CaF 2 22.56wt%, BaSO 4 59.35wt%, CaCO 3 8.65wt%, its separation method is as figure 1 shown, including the following steps:

[0075] S1. Use jaw crusher and cone crusher to crush the raw ore in two stages to obtain crushed ore with a particle size of -15mm;

[0076] S2. Classifying the crushed ore to obtain fine-grained ore with a particle size of -1mm, medium-grained ore with a particle size of +1-5mm, and coarse-grained ore with a particle size of +5-15mm;

[0077]S3. Using a fine-grain jig to perform jigging gravity separation on the medium-grained ore to obtain the medium-grained concentrate and tailings I;

[0078] S4. Use a coarse-grained jig to perform jigging gravity separation on the coarse-grained ore to obtain the coarse-grained concentrate and tailings II;

[0079] S5. Merge the medium-sized ore concentrate and the coarse-grained ore concentrate to obtain BaSO-...

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Abstract

The invention discloses a separation method of low-grade fluorite barite paragenic ore rich in calcite. The method comprises the following steps that firstly, crushing is carried out; secondly, grading is carried out to obtain fine fraction ore, medium fraction ore and coarse fraction ore; thirdly, jigging reselection is carried out on the medium fraction ore, so that medium fraction concentrate and gangue I are obtained; fourthly, jigging reselection is carried out on the coarse fraction ore, so that coarse fraction concentrate and gangue II are obtained; fifthly, the medium fraction concentrate and the coarse fraction concentrate are combined to obtain barite concentrate I, the gangue I and the gangue II are combined, and jigging gangue is obtained; sixthly, the jigging gangue is subjected to color sorting, so that calcite ore and color-sorting gangue are obtained; seventhly, fine fraction ore and the color sorting gangue are combined and milled, so that a floating-in material is obtained; eighthly, separating flotation is carried out, so that fluorite concentrate and flotation gangue are obtained; and ninthly, the flotation gangue is subjected to chute reselection, so that barite concentrate II and chute gangue are obtained. The method achieves the effects that excellent-quality acid fraction fluorite concentrate with CaF2 larger than or equal to 98% and barite concentrate are obtained, and flotation return water can be recycled.

Description

technical field [0001] The invention relates to the technical field of beneficiation of fluorite-barite paragenetic ore, in particular to a method for separating low-grade fluorite-barite paragenetic ore rich in calcite. Background technique [0002] Fluorspar is a non-metallic mineral resource with strategic significance, and its application fields cover metallurgy, chemical industry, building materials, ceramics, aviation, refrigeration, medicine, atomic energy industry, fluorine chemical industry and other traditional and emerging industries. Both Europe and the United States and my country have listed it as an important strategic mineral resource, and have adopted various protection measures for its development and utilization. [0003] At present, more than half of the world's fluorite production is used to produce hydrofluoric acid (the chemical industry needs high-grade fluorite concentrate, generally above the acid level, that is, CaF 2 ≥97%). Fluorine chemical pro...

Claims

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Application Information

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IPC IPC(8): B03B7/00
CPCB03B7/00B03D2203/02B03D1/087B03D1/082B03B9/00
Inventor 曾小波杨耀辉严伟平
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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