CN110449255A - Fluorite lean ore color separation upgrading-tailing discarding preselection method - Google Patents
Fluorite lean ore color separation upgrading-tailing discarding preselection method Download PDFInfo
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- CN110449255A CN110449255A CN201910666708.3A CN201910666708A CN110449255A CN 110449255 A CN110449255 A CN 110449255A CN 201910666708 A CN201910666708 A CN 201910666708A CN 110449255 A CN110449255 A CN 110449255A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The invention provides a fluorite lean ore color sorting upgrading-tailing discarding preselection method, which comprises the following steps: (1) crushing the fluorite lean ore through a two-stage one-closed circuit, wherein the crushed product is-15 mm; (2) screening the crushed products to obtain oversize products and undersize products, wherein the size of a sieve pore is 5mm, and feeding the oversize products into a first-stage color separator for fluorite quality improvement and separation to obtain lump ore concentrates; (3) the tailings separated by the first-stage color separator enter a second-stage color separator for tail throwing separation to obtain lump ore tailings and lump ore middling; (4) and (3) mixing the undersize products in the step (2) with the lump ore middling in the step (3), grinding, and then performing flotation. According to the invention, through pre-upgrading and sorting and discarding a large amount of hard minerals in advance, the raw ore amount entering the ball mill is greatly reduced, the selected grade is improved, and the excessive crushing of the hard minerals to fluorite in the ore grinding process is weakened, so that the production cost is reduced, and the sorting quality is improved.
Description
Technical field
The present invention relates to fluorite ore dressing technology fields, particularly relate to a kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method.
Background technique
Fluorite is important one of the strategic nonmetallic minerals in China, referred to as " the second rare earth ".China's fluorite resource is abundant,
But average grade is lower, and mostly association type fluorite ore, and it is big to sort recovery difficult.Fluorite hardness of mineral is low, property is crisp, with silicate
The difference in hardness of equal gangue minerals is larger, is also easy to produce overground and argillization, is the major reason for being difficult to obtain high-quality fluorite concentrate.Mesh
Before, the main beneficiation method of fluorite ore is picking, gravity treatment and flotation.Picking is generally used for fluorite and gangue boundary clear, is easy to
The preferable fluorite lump ore pre-dressing of quality, can be obtained qualified lump ore product by the fluorite ore of identifying by naked eye, but operating rate
Low, cost of labor is larger, generally as the supplementary means of other dressing methods.Gravity treatment is concentrated mainly on dense media pre-selection technique
Research, the country such as South Africa, Italy preselect fluorite using D.WP. type heavy medium cyclone, are preselected by dense media
The most of quartz of method jettisoning reduce the influence to subsequent grinding operation to improve fluorite Beneficiation Feed Grade.
Color sorting be according to the difference of material optical characteristics, using detecting technique by the heterochromatic particle in granule materials from
A kind of dynamic beneficiation method sorted out is used for bulk material or packaging industry product, food quality detection and classification field.
Summary of the invention
The present invention proposes a kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method, by preparatory upgrading sorting and largely
Hard mineral throw tail in advance, greatly reduce the raw ore mine amount into ball mill, have not only improved Beneficiation Feed Grade but also reduced ore grinding
Crossing for hard Mineral pairs fluorite crushes in the process, to reduce production cost, improves sorting quality.
The technical scheme of the present invention is realized as follows: a kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method, including with
Lower step:
(1) fluorite lean ore by two section one it is closed circuit be crushed, crushed product be -15mm；
(2) crushed product obtains oversize and undersize, screen size 5mm by screening, and oversize enters
One section of color selector obtains lump ore concentrate after carrying out fluorite upgrading sorting by the difference of mineral transparency；
(3) one sections of color selector sorting tailings enter two sections of color selectors and throw tail sorting by the difference of mineral surfaces color, obtain
To lump ore tailing and lump ore chats；
(4) ore grinding is carried out after the lump ore chats mixing in the undersize and step (3) in step (2), subsequently into floating
Choosing.
Further, the blocky tailing in step (3) is the final qualified tailings for throwing tail.
Further, it includes one section of coarse crushing, one section of fine crushing and sieve pore 15mm screening that two section one in step (1) closed circuit,
One section of the ore particles return that broken partial size is+15mm is fine crushing.
Fluorite lean ore of the invention refers to according in professional standard DZ/T 0211-2002, grade of ore CaF2(%) is poor
Mine is 20-65.Method of the invention improves the degree of dissociation of fluorite lean ore Minerals by two section of one closed circuit crushing, and one section of color sorting mentions
Matter, two sections of color sortings throw tail for barren rock, throw tail in advance by the preparatory upgrading sorting of the above method and a large amount of hard mineral, significantly
The raw ore mine amount into ball mill is reduced, Beneficiation Feed Grade had not only been improved but also had reduced hard Mineral pairs fluorite in grinding process
Crushing is crossed, to reduce production cost, improves sorting quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the process flow chart of fluorite lean ore color sorting upgrading-throwing tail pre-selection method of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
A kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method, comprising the following steps:
(1) fluorite lean ore by two section one it is closed circuit be crushed, crushed product be -15mm；
(2) crushed product obtains oversize and undersize, screen size 5mm by screening, and oversize enters
One section of color selector obtains lump ore concentrate after carrying out fluorite upgrading sorting by the difference of mineral transparency；
(3) one sections of color selector sorting tailings enter two sections of color selectors and throw tail sorting by the difference of mineral surfaces color, obtain
To lump ore tailing and lump ore chats；
(4) ore grinding is carried out after the lump ore chats mixing in the undersize and step (3) in step (2), subsequently into floating
Choosing.
Further, the blocky tailing in step (3) is the final qualified tailings for throwing tail.
Further, it includes one section of coarse crushing, one section of fine crushing and sieve pore 15mm screening that two section one in step (1) closed circuit,
One section of the ore particles return that broken partial size is+15mm is fine crushing.
One section of color selector carries out fluorite upgrading sorting according to the transmitance for passing through mineral using optoelectronic device；Two sections of color selectors
It is carried out throwing tail sorting according to the difference of mineral surfaces color using optoelectronic device.
Embodiment:
Hebei low-grade fluorite mine, raw ore CaF2Grade is 31.83%, and main gangue mineral is that (content is quartz
35.79%), potassium feldspar (content 14.84%), sericite (content 5.19%) and clay mineral (content 2.52%).
The fluorite ore middle arteries stone ore object is mainly silicate mineral, and primary slime content is higher.After " two section one closed circuit " is broken, produce
The granularmetric composition of product and fluorite distribution situation are shown in Table 1.Oversize (- 15~+5mm product) passes through one section of-two sections of color sorting upgrading
Separation results after color sorting throwing tail are shown in Table 2.
1 crushed product distributive law result of table
2 color sorting upgrading of table-throwing caudal knot fruit
As it can be seen from table 1 leading to fluorite selective crushing, undersize due to the presence of a large amount of hard silicate minerals
CaF2Grade is obviously enriched with, the CaF of oversize2Grade is substantially reduced.
From table 2 it can be seen that concentrate grade of the oversize after one section of color selector upgrading is up to 88.13%, relatively
In raw ore the rate of recovery be 22.16%.According to professional standard (YB/T5217-2005), reach trade mark FL-85 fluorite lump ore quality
It is required that.
Lump ore tailings grade after two sections of color selectors throwing tails is only 6.82%, is 29.37% relative to raw ore yield, relatively
It is only 6.20% in the raw ore rate of recovery, achieves and throw useless effect well.
Lump ore chats product enters ball mill, CaF after merging with undersize (- 5mm product)2Grade is 36.68%,
4.85 percentage points are improved than raw ore.Raw ore mine amount into ball mill reduces 37.50 percentage points.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method, which comprises the following steps:
(1) fluorite lean ore by two section one it is closed circuit be crushed, crushed product be -15mm；
(2) crushed product obtains oversize and undersize, screen size 5mm by screening, and oversize enters one section
Color selector obtains lump ore concentrate after carrying out fluorite upgrading sorting by the difference of mineral transparency；
(3) one sections of color selector sorting tailings enter two sections of color selectors and throw tail sorting by the difference of mineral surfaces color, obtain block
Mine tailing and lump ore chats；
(4) ore grinding is carried out after the lump ore chats mixing in the undersize and step (3) in step (2), subsequently into flotation.
2. a kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method according to claim 1, which is characterized in that step (3)
In blocky tailing be the final qualified tailings for throwing tail.
3. a kind of fluorite lean ore color sorting upgrading-throwing tail pre-selection method according to claim 1, which is characterized in that step (1)
In two section of one closed circuit ore particles for including one section of coarse crushing, one section of fine crushing and sieve pore 15mm screening, being crushed that partial size is+15mm
One section of return is fine crushing.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250257A (en) * | 2020-03-03 | 2020-06-09 | 浙江兰溪市金昌矿业有限公司 | Separation system and process for fluorite ore containing barite |
| CN112718230A (en) * | 2020-12-11 | 2021-04-30 | 矿冶科技集团有限公司 | Copper oxide ore recovery method |
| CN113042180A (en) * | 2021-03-12 | 2021-06-29 | 中国地质科学院矿产综合利用研究所 | Method for recovering rare earth from heterolite |
| CN113385291A (en) * | 2021-05-27 | 2021-09-14 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering qualified refractory material raw material from high-iron bauxite clinker waste |
| CN113731629A (en) * | 2020-05-29 | 2021-12-03 | 中蓝连海设计研究院有限公司 | Combined beneficiation method for medium-low grade high-silicon phosphorus ore |
| CN113843183A (en) * | 2021-10-11 | 2021-12-28 | 内蒙古宏鉮科技发展有限责任公司 | Fluorite sorting method for bayan obo iron-containing surrounding rock |
| CN115090409A (en) * | 2022-06-16 | 2022-09-23 | 中化地质矿山总局地质研究院 | Ore dressing method for fluorite ore |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250257A (en) * | 2020-03-03 | 2020-06-09 | 浙江兰溪市金昌矿业有限公司 | Separation system and process for fluorite ore containing barite |
| CN113731629A (en) * | 2020-05-29 | 2021-12-03 | 中蓝连海设计研究院有限公司 | Combined beneficiation method for medium-low grade high-silicon phosphorus ore |
| CN112718230A (en) * | 2020-12-11 | 2021-04-30 | 矿冶科技集团有限公司 | Copper oxide ore recovery method |
| CN112718230B (en) * | 2020-12-11 | 2022-08-09 | 矿冶科技集团有限公司 | Copper oxide ore recovery method |
| CN113042180A (en) * | 2021-03-12 | 2021-06-29 | 中国地质科学院矿产综合利用研究所 | Method for recovering rare earth from heterolite |
| CN113042180B (en) * | 2021-03-12 | 2021-11-16 | 中国地质科学院矿产综合利用研究所 | Method for recovering rare earth from heterolite |
| CN113385291A (en) * | 2021-05-27 | 2021-09-14 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering qualified refractory material raw material from high-iron bauxite clinker waste |
| CN113385291B (en) * | 2021-05-27 | 2023-03-14 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering qualified refractory material raw material from high-iron bauxite clinker waste |
| CN113843183A (en) * | 2021-10-11 | 2021-12-28 | 内蒙古宏鉮科技发展有限责任公司 | Fluorite sorting method for bayan obo iron-containing surrounding rock |
| CN115090409A (en) * | 2022-06-16 | 2022-09-23 | 中化地质矿山总局地质研究院 | Ore dressing method for fluorite ore |
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