CN211070440U - System for bastnaesite pure mineral draws - Google Patents
System for bastnaesite pure mineral draws Download PDFInfo
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- CN211070440U CN211070440U CN201921790617.2U CN201921790617U CN211070440U CN 211070440 U CN211070440 U CN 211070440U CN 201921790617 U CN201921790617 U CN 201921790617U CN 211070440 U CN211070440 U CN 211070440U
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Abstract
The utility model discloses a system that bastnaesite pure mineral drawed, the system includes: the device comprises a mixing device, a ball milling device, a screening device, a gravity separation device and a magnetic separation device, wherein the mixing device is provided with a bastnaesite inlet, a water inlet and a mixed ore pulp outlet; the ball milling device is provided with a mixed ore pulp inlet and a fine-grain bastnaesite ore pulp outlet, and the mixed ore pulp inlet is connected with the mixed ore pulp outlet; the screening device is provided with a fine bastnaesite pulp inlet, an oversize pulp outlet and an undersize pulp outlet, and the fine bastnaesite pulp outlet is connected with the fine bastnaesite pulp inlet; the gravity separation device is provided with an undersize pulp inlet, a rough concentrate pulp outlet and a tailing outlet, and the undersize pulp outlet is connected with the undersize pulp inlet; the magnetic separation device is provided with a rough concentrate ore pulp inlet, a bastnaesite concentrate outlet and a non-magnetic mineral outlet, and the rough concentrate ore pulp outlet is connected with the rough concentrate ore pulp inlet.
Description
Technical Field
The utility model belongs to the ore dressing field, concretely relates to system that pure mineral of bastnaesite drawed.
Background
In the field of mineral processing science research, in order to research the physical and chemical properties of a certain mineral in a flotation process, the pure mineral is prepared. The key to the smooth performance of the mineral separation test is whether qualified pure minerals can be obtained, and the method belongs to the sample preparation stage of mineral separation test research.
The bastnaesite rare earth resources usually contain fluorite, barite, quartz and other minerals, such as bayan obo rare earth ore, yak plateau rare earth ore and the like. The bastnaesite, fluorite and barite belong to salt minerals, and are often closely associated with each other and have similar physical and chemical properties. In order to ensure that the surface of the mineral is not polluted and the surface property of the mineral is not changed in the process of purifying the mineral, the pure mineral is mainly obtained by manually selecting the pure mineral one by one under a microscope at present. The manual particle-by-particle selection method has the defects of low speed, low efficiency and small processing amount. This method is not satisfactory when the test amount is large.
Therefore, the existing bastnaesite pure mineral selection process needs to be improved.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a system that pure mineral of bastnaesite drawed adopts this system to obtain separating and obtains high-purity bastnaesite to this system has guaranteed that the pure mineral of bastnaesite draws the in-process, and the mineral surface does not receive the pollution and does not change the surface property of pure mineral, compares traditional microscope and artificially selects down, and the system of this application is efficient, the handling capacity is big, and whole process flow is reasonable, and flow simple structure easily operates.
In one aspect of the present invention, the present invention provides a system for extracting pure bastnaesite minerals. According to the utility model discloses an embodiment, the system includes:
a mixing device having a bastnaesite inlet, a water inlet and a mixed pulp outlet;
the ball milling device is provided with a mixed ore pulp inlet and a fine-grain bastnaesite ore pulp outlet, and the mixed ore pulp inlet is connected with the mixed ore pulp outlet;
a screening device having a fine bastnaesite pulp inlet, an oversize pulp outlet and an undersize pulp outlet, the fine bastnaesite pulp outlet connected to the fine bastnaesite pulp inlet;
a gravity separation device having an undersize pulp inlet, a coarse concentrate pulp outlet, and a tailings outlet, the undersize pulp outlet connected to the undersize pulp inlet;
the magnetic separation device is provided with a rough concentrate ore pulp inlet, a bastnaesite concentrate outlet and a non-magnetic mineral outlet, and the rough concentrate ore pulp outlet is connected with the rough concentrate ore pulp inlet.
According to the utility model discloses ball-milling processing is carried out to system that pure mineral of bastnaesite drawed through pulping after with bastnaesite for bastnaesite monomer in the bastnaesite is whole to be dissociated, then realize through screening plant that non-dissociation bastnaesite granule separates with dissociation bastnaesite granule, and the proportion of the pure mineral of bastnaesite is great in the dissociation bastnaesite granule that obtains, the proportion of impurity such as quartz, barite and fluorite is less in the mineral, supply the dissociation bastnaesite granule that will obtain to gravity selection device and reselect and can realize the preliminary separation of bastnaesite pure mineral and impurity such as quartz, barite, fluorite and fine mud, then the bastnaesite rough concentrate that contains the pure mineral of bastnaesite that will obtain passes through further magnetic separation, can detach wherein non-magnetic mineral, obtain high-purity bastnaesite. And this system has guaranteed that the bastnaesite pure mineral draws the in-process, and the mineral surface does not receive the pollution and does not change the surface property of pure mineral, compares artifical the choosing under the traditional microscope, and the system of this application is efficient, the handling capacity is big, and whole process flow is reasonable, and the flow structure is simple, easily the operation.
In addition, the system for extracting the bastnaesite pure minerals according to the above embodiments of the present invention may further have the following additional technical features:
preferably, the ball milling device is a ball mill. Thereby, the bastnaesite monomer in the bastnaesite is completely dissociated.
Preferably, the lining plate of the ball mill is a ceramic lining plate, and the balls are ceramic balls. Thereby, the bastnaesite monomer in the bastnaesite is completely dissociated.
Preferably, the gravity concentration device is a shaker. Therefore, the separation efficiency of the bastnaesite pure minerals can be remarkably improved.
Preferably, the screening device is a vibrating screen with a screen opening size of 74 μm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a system for pure mineral extraction of bastnaesite according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for extracting bastnaesite pure minerals by using the bastnaesite pure mineral extraction system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and, for example, as either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In one aspect of the present invention, the present invention provides a system for extracting pure bastnaesite minerals. According to an embodiment of the present invention, referring to fig. 1, the system includes: mixing device 100, ball milling device 200, screening device 300, gravity separation device 400 and magnetic separation device 500.
According to the embodiment of the present invention, the mixing device 100 has a bastnaesite inlet 101, a water inlet 102 and a mixed pulp outlet 103, and is adapted to mix bastnaesite and water for pulping so as to obtain a mixed pulp. Preferably, the mass concentration of the mixed ore pulp can be 30-55 wt%. The inventor finds that if the mass concentration of the mixed ore pulp is too high, the mobility of coarse ore particles and fine ore particles is poor, the grinding medium (ceramic balls) cannot play a role, and the subsequent ball mill is easy to expand, so that the normal operation of grinding equipment is seriously influenced; if the mass concentration of the mixed ore pulp is too low, the ore grinding effect is deteriorated, and the processing capacity of the ball mill is reduced. Therefore, when the mass concentration of the mixed ore pulp is 30-55 wt%, the subsequent ball milling can be ensured to be smoothly carried out, and the ore milling effect is improved.
According to the utility model discloses an embodiment, ball-milling device 200 has mixed ore pulp entry 201 and the export of fine grain bastnaesite ore pulp 202, mixes ore pulp entry 201 and mixed ore pulp export 103 and connects, and is suitable for to carry out the ball-milling with the above-mentioned mixed ore pulp that obtains and handles, obtains the fine grain bastnaesite ore pulp. Preferably, the proportion of particles with the particle size of not more than 74 mu m in the fine bastnaesite ore pulp is 60-80%. The inventor finds that the fine-grain bastnaesite pulp with the grain size can ensure that the bastnaesite monomers are completely dissociated, so that the high-purity bastnaesite pure minerals can be separated through subsequent screening, gravity separation and magnetic separation. Further, the ball mill is a ball mill, and the lining plate of the ball mill is a ceramic lining plate, and the balls are ceramic balls. Therefore, the ore grinding efficiency of the mixed ore pulp can be obviously improved.
According to the embodiment of the utility model, screening plant 300 has fine grain bastnaesite ore pulp entry 301, pulp export 302 under the screen and pulp export 303 on the screen, and fine grain bastnaesite ore pulp entry 301 and fine grain bastnaesite ore pulp export 202 are connected, and are suitable for carrying out the screening process with the above-mentioned fine grain bastnaesite ore pulp that obtains, and the separation obtains the pulp under the screen that contains the bastnaesite granule that dissociates and the pulp on the screen that contains the bastnaesite granule that does not dissociate. Preferably, the screening device is a vibrating screen, and the size of the screen hole is 74 um. Therefore, dissociated bastnaesite particles with a particle size of not more than 74 mu m in the fine-grain bastnaesite pulp obtained by ball milling can be separated from non-dissociated bastnaesite particles, so that the workload of the subsequent reselection process is reduced, and the separation efficiency is improved.
According to the utility model discloses an embodiment reselects device 400 has undersize pulp entry 401, coarse concentrate pulp export 402 and tailings export 403, and undersize pulp entry 401 is connected with undersize pulp export 302, and is suitable for and reselects the processing with the undersize pulp that contains the dissociation bastnaesite granule that above-mentioned obtained, obtains coarse concentrate pulp and tailings. The inventors found that the bastnaesite pure mineral has a large specific gravity of 4.4, while the barite has a specific gravity of 4.0, the fluorite has a specific gravity of 3.18, and the quartz has a specific gravity of 2.65. In the reinforced gravity field, the gravity difference between the bastnaesite pure mineral with large specific gravity and the tailings with small specific gravity is reinforced, so that the bastnaesite pure mineral can be primarily separated from the tailings such as quartz, barite, fluorite and the like through gravity separation to obtain bastnaesite rough concentrate ore pulp containing the bastnaesite pure mineral, the barite, the fluorite and part of coarse-particle quartz. Preferably, the reselection device may be a shaker. This can significantly improve the separation efficiency.
According to the embodiment of the utility model, magnetic separation device 500 has fluorine carbon cerium rough concentrate entry 501, fluorine carbon cerium ore concentrate export 502 and non-magnetic mineral export 503, and fluorine carbon cerium rough concentrate entry 501 and fluorine carbon cerium rough concentrate export 402 are connected, and are suitable for and carry out the magnetic separation with the above-mentioned fluorine carbon cerium ore rough concentrate ore pulp that contains fluorine carbon cerium ore pure mineral, barite, fluorite and part coarse grain quartz that obtains, and the separation obtains fluorine carbon cerium ore concentrate and non-magnetic mineral. The inventors found that bastnaesite concentrates mainly contain magnetic minerals bastnaesite and nonmagnetic minerals (barite, fluorite, quartz, etc.), and thus, separation of bastnaesite from nonmagnetic minerals can be achieved by magnetic separation to obtain bastnaesite pure minerals. Preferably, the magnetic field intensity of the magnetic separation can be 1.2-1.8T. The inventors found that if the magnetic field strength is too small, part of the monomer-dissociated bastnaesite is not well magnetically separated, i.e., the bastnaesite is lost; if the magnetic field intensity is too large, part of nonmagnetic minerals enter the bastnaesite concentrate due to inclusion.
According to the utility model discloses ball-milling processing is carried out to system that pure mineral of bastnaesite drawed through pulping after with bastnaesite for bastnaesite monomer in the bastnaesite is whole to be dissociated, then realize through screening plant that non-dissociation bastnaesite granule separates with dissociation bastnaesite granule, and the proportion of the pure mineral of bastnaesite is great in the dissociation bastnaesite granule that obtains, the proportion of impurity such as quartz, barite and fluorite is less in the mineral, supply the dissociation bastnaesite granule that will obtain to gravity selection device and reselect and can realize the preliminary separation of bastnaesite pure mineral and impurity such as quartz, barite, fluorite and fine mud, then the bastnaesite rough concentrate that contains the pure mineral of bastnaesite that will obtain passes through further magnetic separation, can detach wherein non-magnetic mineral, obtain high-purity bastnaesite. And this system has guaranteed that the bastnaesite pure mineral draws the in-process, and the mineral surface does not receive the pollution and does not change the surface property of pure mineral, compares artifical the choosing under the traditional microscope, and the system of this application is efficient, the handling capacity is big, and whole process flow is reasonable, and the flow structure is simple, easily the operation.
For convenience of understanding, the method for performing the bastnaesite pure mineral extraction using the above-described bastnaesite pure mineral extraction system will be described in detail below. According to an embodiment of the present invention, referring to fig. 2, the method comprises:
s100: supplying bastnaesite and water to a mixing device for mixing
In the step, bastnaesite and water are mixed and pulped so as to obtain mixed ore pulp. Preferably, the mass concentration of the mixed ore pulp can be 30-55 wt%. The inventor finds that if the mass concentration of the mixed ore pulp is too high, the mobility of coarse ore particles and fine ore particles is poor, the grinding medium (ceramic balls) cannot play a role, and the subsequent ball mill is easy to expand, so that the normal operation of grinding equipment is seriously influenced; if the mass concentration of the mixed ore pulp is too low, the ore grinding effect is deteriorated, and the processing capacity of the ball mill is reduced. Therefore, when the mass concentration of the mixed ore pulp is 30-55 wt%, the subsequent ball milling can be ensured to be smoothly carried out, and the ore milling effect is improved.
S200: the mixed ore pulp is supplied to a ball milling device for ball milling treatment
In the step, the obtained mixed ore pulp is subjected to ball milling treatment to obtain fine bastnaesite ore pulp. Preferably, the proportion of particles with the particle size of not more than 74 mu m in the fine bastnaesite ore pulp is 60-80%. The inventor finds that the fine-grain bastnaesite pulp with the grain size can ensure that the bastnaesite monomers are completely dissociated, so that the high-purity bastnaesite pure minerals can be separated through subsequent screening, gravity separation and magnetic separation.
S300: feeding the fine bastnaesite pulp to a screening device for screening treatment
In the step, the obtained fine bastnaesite pulp is subjected to screening treatment, and undersize pulp containing dissociated bastnaesite particles and oversize pulp containing non-dissociated bastnaesite particles are obtained by separation. Preferably, the screening device is a vibrating screen, and the size of the screen hole is 74 um. Therefore, dissociated bastnaesite particles with a particle size of not more than 74 mu m in the fine-grain bastnaesite pulp obtained by ball milling can be separated from non-dissociated bastnaesite particles, so that the workload of the subsequent reselection process is reduced, and the separation efficiency is improved.
S400: supplying the undersize ore pulp to a gravity separation device for gravity separation treatment
In the step, the obtained undersize ore pulp containing the dissociated bastnaesite particles is subjected to gravity separation treatment to obtain rough concentrate ore pulp and tailings. The inventors found that the bastnaesite pure mineral has a large specific gravity of 4.4, while the barite has a specific gravity of 4.0, the fluorite has a specific gravity of 3.18, and the quartz has a specific gravity of 2.65. In the reinforced gravity field, the gravity difference between the bastnaesite pure mineral with large specific gravity and the tailings with small specific gravity is reinforced, so that the bastnaesite pure mineral can be primarily separated from the tailings such as quartz, barite, fluorite and the like through gravity separation to obtain bastnaesite rough concentrate ore pulp containing the bastnaesite pure mineral, the barite, the fluorite and part of coarse-particle quartz.
S500: supplying the rough concentrate ore pulp to a magnetic separation device for magnetic separation treatment
In the step, the obtained bastnaesite rough concentrate ore pulp containing bastnaesite pure minerals, barite, fluorite and part of coarse-particle quartz is subjected to magnetic separation treatment, and bastnaesite concentrate and non-magnetic minerals are obtained through separation. The inventors found that bastnaesite concentrates mainly contain magnetic minerals bastnaesite and nonmagnetic minerals (barite, fluorite, quartz, etc.), and thus, separation of bastnaesite from nonmagnetic minerals can be achieved by magnetic separation to obtain bastnaesite pure minerals. Preferably, the magnetic field intensity of the magnetic separation can be 1.2-1.8T. The inventors found that if the magnetic field strength is too small, part of the monomer-dissociated bastnaesite is not well magnetically separated, i.e., the bastnaesite is lost; if the magnetic field intensity is too large, part of nonmagnetic minerals enter the bastnaesite concentrate due to inclusion.
According to the utility model discloses the method of bastnaesite pure mineral extraction carries out ball-milling after through pulping bastnaesite for bastnaesite monomer in the bastnaesite is whole to be dissociated, then realize through screening plant that non-dissociation bastnaesite granule separates with dissociation bastnaesite granule, and the specific gravity of bastnaesite pure mineral in the obtained dissociation bastnaesite granule is great, the specific gravity of impurity such as quartz, barite and fluorite is less in the mineral, supply the dissociation bastnaesite granule that will obtain to gravity selection device and reselect and can realize the preliminary separation of bastnaesite pure mineral and impurity such as quartz, barite, fluorite and silt, then the bastnaesite rough concentrate that contains bastnaesite pure mineral that will obtain passes through further magnetic separation, can get rid of non-magnetic mineral wherein, obtain high-purity bastnaesite. And this system has guaranteed in the pure mineral extraction process of bastnaesite, and the mineral surface does not receive the pollution and does not change the surface nature of pure mineral, compares the manual selection under the traditional microscope, and the method of this application is efficient, the handling capacity is big, and whole process flow is reasonable, and the flow structure is simple, easily the operation.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Examples
The preparation method comprises the steps of mixing 55 wt% of bastnaesite containing bastnaesite, wherein the bastnaesite comprises barite, fluorite, quartz and the like, obtaining mixed ore pulp with the mass concentration of 50% of the ore pulp, sending the mixed ore pulp to a ball mill for grinding to obtain fine-grain bastnaesite ore pulp with the grain size not larger than 74um and accounting for 60-80%, screening the fine-grain bastnaesite by using a vibrating screen to obtain oversize ore pulp and undersize ore pulp, carrying out table concentrator beneficiation on the undersize ore pulp to obtain bastnaesite rough concentrate and tailings, and finally carrying out magnetic separation on the bastnaesite rough concentrate under a magnetic field of 1.5T to remove nonmagnetic minerals to obtain the bastnaesite with the grade of 71.22%.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A system for extracting bastnaesite pure minerals is characterized by comprising:
a mixing device having a bastnaesite inlet, a water inlet and a mixed pulp outlet;
the ball milling device is provided with a mixed ore pulp inlet and a fine-grain bastnaesite ore pulp outlet, and the mixed ore pulp inlet is connected with the mixed ore pulp outlet;
a screening device having a fine bastnaesite pulp inlet, an oversize pulp outlet and an undersize pulp outlet, the fine bastnaesite pulp outlet connected to the fine bastnaesite pulp inlet;
a gravity separation device having an undersize pulp inlet, a coarse concentrate pulp outlet, and a tailings outlet, the undersize pulp outlet connected to the undersize pulp inlet;
the magnetic separation device is provided with a rough concentrate ore pulp inlet, a bastnaesite concentrate outlet and a non-magnetic mineral outlet, and the rough concentrate ore pulp outlet is connected with the rough concentrate ore pulp inlet.
2. The system for the extraction of bastnaesite pure minerals according to claim 1, wherein the ball milling device is a ball mill.
3. The system for extracting bastnaesite pure minerals according to claim 2, wherein the lining plate of the ball mill is a ceramic lining plate, and the balls are ceramic balls.
4. The system for the extraction of a bastnaesite pure mineral according to claim 1, wherein the gravity separation means is a shaker.
5. The system for extracting bastnaesite pure minerals according to claim 1, wherein the sieving device is a vibrating sieve having a sieve pore size of 74 μm.
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| CN201921790617.2U CN211070440U (en) | 2019-10-22 | 2019-10-22 | System for bastnaesite pure mineral draws |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639693A (en) * | 2019-10-22 | 2020-01-03 | 中国恩菲工程技术有限公司 | System and method for extracting bastnaesite pure minerals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639693A (en) * | 2019-10-22 | 2020-01-03 | 中国恩菲工程技术有限公司 | System and method for extracting bastnaesite pure minerals |
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