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A method for separating low-grade fluorite-barite paragenetic ore rich in calcite

A separation method, barite technology, applied in the direction of solid separation, wet separation, chemical instruments and methods, etc., can solve the problems that flotation backwater cannot be recycled and the grade of fluorite concentrate is not high, so as to improve flotation Efficiency, increasing hydrophilicity, and reducing working pressure

Active Publication Date: 2020-11-24
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • 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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  • A method for separating low-grade fluorite-barite paragenetic ore rich in calcite
  • A method for separating low-grade fluorite-barite paragenetic ore rich in calcite
  • A method for separating low-grade fluorite-barite paragenetic ore rich in calcite

Examples

Experimental program
Comparison scheme
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 broken 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 BaSO...

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 broken 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-c...

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Abstract

The invention discloses a method for separating low-grade fluorite-barite paragenetic ore rich in calcite, comprising the following steps: S1. crushing; S2. grading to obtain fine-grained ore, medium-grained ore and coarse-grained ore; S3. Perform jigging gravity separation on medium-sized ores to obtain medium-sized concentrates and tailings I; S4. Perform jigging gravity separation on coarse-sized ores to obtain coarse-sized concentrates and tailings II; S5. Combining grain grade concentrate and coarse grade concentrate to obtain barite concentrate I; combining tailings I and tailing II to obtain jigging tailings; S6. Color separation of jigging tailings to obtain calcite minerals and Color separation tailings; S7. Combine fine-grained ore and color separation tailings for grinding to obtain floating materials; S8. Separate flotation to obtain fluorite concentrate and flotation tailings; S9. Flotation tailings Carry out chute gravity separation to obtain barite concentrate II and chute tailings; 2 ≥98%) and barite concentrate, and the flotation backwater 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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Patent Type & Authority Patents(China)
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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