CN218222794U - Ore dressing system - Google Patents

Abstract

The utility model provides a mineral processing system. This ore dressing system includes: the device comprises a primary grinding device, a mineral processing device, a concentrate processing device and a tailing processing device; wherein the inlet of the mineral processing apparatus is connected with the outlet of the primary grinding apparatus; the inlet of the concentrate treatment equipment is connected with the concentrate outlet of the mineral treatment equipment; and the inlet of the tailing treatment equipment is respectively connected with the tailing outlet of the mineral treatment equipment. The utility model discloses a magnetic agglomeration is in advance carried out to the micro-fine particle mineral in the ore pulp to mineral processing equipment, make the impulsive force of equipment normal water can be overcome to the magnetic grouping, reduce the impact force of water to the influence of magnetic grouping motion trail, extension micro-fine particle mineral is in equipment sorting zone dwell time, make the magnetic grouping can be selected separately to the concentrate ore pulp by equipment in, the concentrate volume of running the tail of ore dressing flow is reduced, improve concentrate productivity and rate of recovery, the problem of the tail that causes in the tailing ore pulp is not gone into to the micro-fine particle mineral through the selection has been solved.

Description

Ore dressing system

Technical Field

The utility model relates to a mineral processing technology field particularly, relates to a mineral processing system.

Background

China has rich mineral resources, but more lean ores, less rich ores, fine disseminated granularity, more associated elements and complex deposit types. Along with the continuous development and utilization of mineral resources, the characteristics of 'poor, fine and miscellaneous' of the mineral resources in China are increasingly shown, and the iron ore has low extraction grade and fine granularity. The difficulty of resource development and utilization is higher than that of the prior art, the mineral particles can be dissociated by the monomer only by increasing the grinding fineness, so that the selected mineral particles are increasingly finer, and under many conditions, the low-concentration fine-particle minerals are not selected and are flushed into tailing pulp by the impact force of water in equipment, so that the problems of tailing running and the like are caused, and the current requirements on the design of the fine grinding and mineral separation process flow are also higher. The mineral processing process flow has certain advancement and realization reliability, is beneficial to the effective and comprehensive utilization of mineral resources, and improves the mineral processing technology level. Therefore, the selection process is optimized and improved, and the novel selection process flow which can meet the requirements of the technical indexes of mineral separation and can improve the selection efficiency is obtained.

Disclosure of Invention

In view of this, the utility model provides a can reach ore dressing technical index and can improve the ore dressing efficiency again, reduce the ore concentrate and throw the tail, improve the ore concentrate productivity's ore dressing system aims at solving current ore dressing mineral granule and does not select separately, just by the impulsive force of equipment normal water rush into the tailing ore pulp, cause the problem of running the tail.

The utility model provides a mineral processing system, this mineral processing system includes: the device comprises a primary ore grinding device, a mineral processing device, a concentrate processing device and a tailing processing device; the primary ore grinding equipment is used for carrying out primary ore grinding treatment on the crushed product; the inlet of the mineral processing equipment is connected with the outlet of the first-stage ore grinding equipment and is used for receiving the product after the first-stage ore grinding equipment grinds the ore and gradually grading, pre-magnetizing and sorting the product after the ore grinding to obtain primary tailings and primary concentrate; the inlet of the concentrate treatment equipment is connected with the concentrate outlet of the mineral treatment equipment and is used for receiving the primary concentrate and carrying out concentrate treatment on the primary concentrate to obtain a final concentrate product; and the inlet of the tailing treatment equipment is respectively connected with the tailing outlet of the mineral treatment equipment and is used for carrying out tailing treatment on the primary tailings to obtain final tailings after treatment.

Further, the above mineral processing system, the mineral processing apparatus includes: the device comprises a first-stage grading device, a first pre-magnetizer, a first sorting device, a second-stage grading device, a second pre-magnetizer and a second sorting device; the inlet of the first-stage grading equipment is connected with the outlet of the first-stage ore grinding equipment and is used for receiving the product after the grinding of the first-stage ore grinding equipment and carrying out first-stage grading operation on the product after the grinding to obtain a first-stage graded coarse grain product and a first-stage graded fine grain product; the inlet of the first pre-magnetizer is connected with the fine particle outlet of the first-stage grading equipment and is used for receiving the fine particle products after the first-stage grading and pre-magnetizing the fine particle products after the first-stage grading to obtain pre-magnetized and agglomerated ore pulp; the inlet of the first grading equipment is connected with the outlet of the first pre-magnetizer and is used for receiving the pre-magnetized and agglomerated ore pulp and carrying out at least one section of grading operation on the pre-magnetized and agglomerated ore pulp to obtain a first grading concentrate product and a first grading tailing product; an inlet of the second-stage grading equipment is connected with a concentrate outlet of the first grading equipment and is used for receiving the first grading concentrate product and performing second-stage grading operation on the first grading concentrate product to obtain a coarse grain product and a fine grain product after second-stage grading; the inlet of the second pre-magnetizer is connected with the fine particle outlet of the secondary grading equipment and is used for receiving the fine particle product after the secondary grading and carrying out pre-magnetizing operation on the fine particle product after the secondary grading to obtain ore pulp which is magnetized and agglomerated again; and an inlet of the second sorting equipment is connected with an outlet of the second pre-magnetizer and is used for receiving the ore pulp which is magnetized and agglomerated again, at least one section of sorting operation is carried out on the ore pulp which is magnetized and agglomerated again to obtain a second sorting concentrate product and a second sorting tailing product, the second sorting concentrate product is used as primary concentrate and fed into the concentrate processing equipment, and the second sorting tailing product and the first sorting tailing product are used as primary tailings and fed into the tailing processing equipment.

Further, in the ore dressing system, the coarse grain outlet of the first-stage grading equipment is connected with the inlet of the first-stage ore grinding equipment, and is used for returning the coarse grain product subjected to the first-stage grading to the first-stage ore grinding equipment for secondary ore grinding, and feeding the product obtained by secondary ore grinding into the first-stage grading equipment to form closed-circuit ore grinding circulation.

Further, in the beneficiation system, the mineral processing apparatus further includes: second-stage ore grinding equipment; the inlet of the secondary ore grinding equipment is connected with the coarse grain outlet of the secondary grading equipment and is used for receiving the coarse grain product after the secondary grading and grinding the coarse grain product after the secondary grading; and the inlet of the second-stage grading equipment is also connected with the outlet of the second-stage ore grinding equipment and is used for returning the products subjected to second-stage ore grinding to the second-stage grading equipment for grading, so that the second-stage ore grinding equipment and the second-stage grading equipment form an ore grinding grading closed-loop circulation flow.

Further, in the ore dressing system, the second-stage ore grinding equipment and/or the first-stage ore grinding equipment is ball milling equipment.

Further, in the beneficiation system, the first-stage classification device and/or the second-stage classification device is a hydrocyclone.

Further, in the beneficiation system, the inlet of the tailing treatment equipment is connected with a third pre-magnetizer which is used for pre-magnetizing the primary tailings and feeding the pre-magnetized primary tailings into the tailing treatment equipment for tailing treatment.

Further, in the ore dressing system, the inlet of the concentrate treatment equipment is connected with the fourth pre-magnetizer, the fourth pre-magnetizer is used for pre-magnetizing the primary concentrate, and the pre-magnetized primary concentrate is fed into the concentrate treatment equipment for concentrate treatment.

Further, in the beneficiation system, the fourth pre-magnetizer, the third pre-magnetizer, the second pre-magnetizer and/or the first pre-magnetizer are electromagnetic pre-magnetizers or permanent magnet pre-magnetizers.

Further, in the beneficiation system, the tailing treatment equipment is tailing dewatering equipment; and/or the concentrate treatment plant is a concentrate dewatering plant.

The utility model provides a mineral processing system, after the product after the breakage carries out stage grinding through one section ore grinding equipment, carry out grading, premagnetization and sorting to the ore grinding product step by step through mineral processing equipment, obtain preliminary tailing and preliminary concentrate; carrying out concentrate treatment on the primary concentrate by concentrate treatment equipment to obtain a final concentrate product; and (4) carrying out tailing treatment on the primary tailings by using tailing treatment equipment, and obtaining final tailings after treatment. The ore dressing system can be used together with a dressing device by selecting a pre-magnetizer, the ore dressing system can be graded and then fed into the dressing device, fine-grained minerals with the ore dressing concentration of 5% -30% are pre-magnetized, the ore dressing after pre-magnetization is fed into the dressing device for dressing, the fine-grained minerals in the ore dressing system can be pre-magnetized and agglomerated, most of the fine-grained minerals in the low-concentration ore dressing are agglomerated into magnetic clusters, the mass of the magnetic clusters is increased, the gravity of the magnetic clusters can overcome the impact force of water in the device, the influence of the impact force of the water on the motion track of the magnetic clusters is reduced, the fine-grained minerals cannot enter tailing overflow along with water flow before being sorted, the retention time of the fine-grained minerals in a dressing area of the device is prolonged, the magnetic clusters can be sorted into ore concentrates by the device, the ore dressing process tail leakage of the ore dressing is reduced, the yield and the recovery rate of the ore concentrates are improved, the grade of the ore dressing is reduced, the ore dressing system can be efficiently sorted and utilized, and the problems that the fine-grained minerals are more fine-grained minerals, and the ore dressing device can flush the ore dressing device and the ore dressing device can cause the problem of the tail leakage of the ore dressing. Simultaneously, this ore dressing system is favorable to improving the effective comprehensive utilization to mineral resources, promotes ore dressing scientific and technological level, carries out optimization improvement to the selection flow, has obtained a novel ore dressing system that can reach the ore dressing technical index requirement, can improve the efficiency of selecting again.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a block diagram of a mineral processing system provided by the embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, it is a block diagram of a mineral processing system provided by an embodiment of the present invention. As shown, the system includes: the device comprises a primary ore grinding device 1, a mineral processing device 2, a concentrate processing device 3 and a tailing processing device 4; wherein, the first and the second end of the pipe are connected with each other,

the primary ore grinding equipment 1 is used for carrying out primary ore grinding treatment on the crushed product. Specifically, the crushed product may be fed into the primary ore grinding device 1 through an inlet of the primary ore grinding device 1, so as to perform primary ore grinding in the primary ore grinding device 1, where the primary ore grinding device 1 may be a ball mill, and certainly may also be other ore grinding devices, and this embodiment does not limit this.

The inlet of the mineral processing device 2 is connected with the outlet of the primary ore grinding device 1, and is used for receiving the product ground by the primary ore grinding device 1, and gradually grading, pre-magnetizing and sorting the product ground to obtain primary tailings and primary concentrate. Specifically, the product ground by the first-stage grinding device 1 is fed into the mineral processing device 2, grading, pre-magnetizing and sorting are performed gradually in the mineral processing device 2, the grading, pre-magnetizing and sorting can be performed gradually as one stage or as multiple stages, in this embodiment, two stages are taken as an example, the grading, pre-magnetizing and sorting are performed sequentially, and then the grading, pre-magnetizing and sorting are performed gradually again.

The inlet of the concentrate treatment device 3 is connected to the concentrate outlet of the mineral treatment device 2 for receiving the primary concentrate and performing concentrate treatment on the primary concentrate to obtain the final concentrate product. Specifically, the primary concentrate finally obtained by the mineral processing equipment 2 is fed into the concentrate processing equipment 3, and the concentrate is processed by the concentrate processing equipment 3, for example, concentrate dehydration treatment can be carried out, and a final concentrate product is obtained after the treatment. In this embodiment, the concentrate processing apparatus 3 may be a concentrate dewatering apparatus to perform concentrate dewatering, but the present embodiment does not limit the processing method and the number of processing flow stages, and may be one-stage filtration, pressure filtration, or precipitation, or multi-stage processing such as filtration after concentration or filtration after precipitation, so as to achieve the purpose of concentrate dewatering. In this embodiment, the overflow from the concentrate treatment plant 3 can also be fed to other locations where water needs to be added as circulating water for the whole beneficiation process. In this embodiment, before the primary concentrate is fed into the concentrate processing apparatus 3, after being magnetized in advance by a fourth pre-magnetizer (not shown in the figure), the concentrate is then fed into the concentrate processing apparatus 3 to be dehydrated, so that before treatment, the concentrate is magnetized and agglomerated in advance, that is, a fourth pre-magnetizer is arranged between an inlet of the concentrate processing apparatus 3 and a concentrate outlet of the mineral processing apparatus 2, the primary concentrate is magnetized and agglomerated in advance by the fourth pre-magnetizer, so that the concentrate processing is performed after the agglomeration of mineral particles in the slurry becomes large, the magnetized slurry can reach the effect of concentrate dehydration more quickly, and the mineral separation efficiency is improved. The fourth pre-magnetizer can be an electromagnetic pre-magnetizer or a permanent-magnet pre-magnetizer; the fourth pre-magnetizer may be a tubular pre-magnetizer, or a box-type pre-magnetizer, and the embodiment does not limit the working principle, type, working mode, etc. of the fourth pre-magnetizer.

And the inlet of the tailing treatment equipment 4 is respectively connected with the tailing outlet of the mineral treatment equipment 2 and is used for carrying out tailing treatment on the primary tailings to obtain the final tailings after the treatment. Specifically, the primary tailings obtained in the mineral processing equipment 2 are fed into the tailing processing equipment 4 for tailing processing, and the tailings obtained after the tailing processing equipment 4 is used for tailing processing are final tailings. In this embodiment, the tailing processing equipment 4 may be tailing dewatering equipment, and the processing method and the number of processing flow stages are not limited, and may be one-stage concentration or filter pressing, or may be multi-stage processing such as filter pressing after concentration, so as to achieve the purpose of tailing dewatering and facilitating the transportation of tailings to a tailing pond for stockpiling. In this embodiment, before giving into tailing treatment facility 4 with preliminary tailing, accessible third pre-magnetizer (not shown in the figure) carries out magnetization in advance after, give into tailing treatment facility 4 and carry out the tailing processing again, so that before preliminary tailing is handled, magnetization reunion in advance earlier, that is to say, be equipped with third pre-magnetizer between the entry of tailing treatment facility 4 respectively and the tailing export of mineral treatment facility 2, through third pre-magnetizer to preliminary tailing magnetization reunion in advance, carry out the tailing processing after making the mineral particles reunion grow in the ore pulp, make the ore pulp after the magnetization can reach the effect that the tailing dewaters more fast, improve ore dressing efficiency. Wherein, the third pre-magnetizer can be an electromagnetic pre-magnetizer and can also be a permanent-magnet pre-magnetizer; the third pre-magnetizer may be a tubular pre-magnetizer, or a box-type pre-magnetizer, and the embodiment does not limit the working principle, type, working mode, etc. of the third pre-magnetizer.

With continued reference to fig. 1, the mineral processing plant 2 comprises: the device comprises a first-stage grading device 21, a first pre-magnetizer 22, a first sorting device 23, a second-stage grading device 24, a second pre-magnetizer 25, a second sorting device 26 and a second-stage ore grinding device 27; wherein the content of the first and second substances,

the inlet of the primary grading equipment 21 is connected with the outlet of the primary grinding equipment 1, and is used for receiving the product ground by the primary grinding equipment 1 and performing primary grading operation on the product ground to obtain a primary graded coarse grain product and a primary graded fine grain product. Specifically, the ground ore product obtained after primary grinding is fed into a primary grading device 21 for primary grading operation; the first-stage classifying device 21 may be a hydrocyclone, or may be another classifying device, and this embodiment does not limit the first-stage classifying device at all. Finally, obtaining a coarse grain product and a fine grain product after primary classification; wherein, because of different mineral properties, some minerals have large embedded particle size and can be dissociated without fine grinding; some minerals have small embedded particle size and can be dissociated only by grinding; therefore, the coarse product and the fine product can be classified into a specific defined classification size according to actual conditions such as mineral properties, for example, a coarse product after a stage of classification is larger than a first preset classification size, and a fine product after a stage of classification is smaller than or equal to the first preset classification size, and the first preset classification size is not limited in this embodiment. In this embodiment, the product after grinding is an ore slurry product containing water, and both the coarse product and the fine product after primary classification are obtained.

In the embodiment, the coarse grain outlet of the primary classifying equipment 21 is connected with the inlet of the primary grinding equipment 1, and is used for returning the coarse grain product after primary classification to the primary grinding equipment 1 for secondary grinding, and feeding the product obtained by secondary grinding into the primary classifying equipment 21 to form a closed grinding cycle. Specifically, the coarse grain product obtained after the first-stage classification operation is directly returned to the first-stage ore grinding equipment 1 for regrinding, so that the first-stage classification equipment 21 and the first-stage ore grinding equipment 1 form ore grinding closed-loop circulation operation, and the minerals, the granularity of which does not meet the first preset classification granularity requirement, in the ore grinding product obtained after the first-stage ore grinding are subjected to circulation ore grinding in the ore grinding equipment until the granularity of the minerals meets the requirement, leave the circulation ore grinding flow, enter the first-stage classification equipment 21 for first-stage classification operation, and can be used as fine grain products of the first-stage classification operation. The first preset classification granularity requirement may be determined according to an actual situation, and is not limited in this embodiment.

The inlet of the first pre-magnetizer 22 is connected with the fine particle outlet of the primary grading equipment 21 and is used for receiving the fine particle product after primary grading and pre-magnetizing the fine particle product after primary grading to obtain pre-magnetized agglomerated ore pulp. Specifically, the fine particle product obtained after the primary classification operation is pre-magnetized by a first pre-magnetizer 22 before being fed into a separation device such as a first separation device 23, so that the fine mineral particles in the ore pulp are magnetized and agglomerated in advance; wherein, the first pre-magnetizer 22 may be an electromagnetic pre-magnetizer, and may also be a permanent-magnet pre-magnetizer; the first pre-magnetizer 22 may be a tubular pre-magnetizer or a box-type pre-magnetizer, and the working principle, type, working mode, etc. of the first pre-magnetizer 22 are not limited in this embodiment.

The inlet of the first sorting device 23 is connected to the outlet of the first pre-magnetizer 22, and is configured to receive the pre-magnetized and agglomerated ore slurry, and perform at least one stage of primary sorting operation on the pre-magnetized and agglomerated ore slurry to obtain a first sorted concentrate product and a first sorted tailing product. Specifically, the ore pulp obtained after being pre-magnetized by the first pre-magnetizer 22 is fed into the first sorting equipment 23 for primary sorting operation; the first sorting equipment 23 is equipment for performing at least one section of sorting operation on ore pulp pre-magnetized by the first pre-magnetizer 22, and in the at least one section of sorting operation process, corresponding concentrate products obtained by each section of mineral separation are sequentially fed into the next section of mineral separation equipment for performing the next section of sorting operation until minerals meeting the index requirement are obtained in the last section of sorting operation, and then the primary sorting operation is completed, and the concentrate obtained in the last section of sorting operation is the concentrate in the primary sorting operation and is used as the first sorting concentrate product; mixing tailings obtained by each section of sorting operation in the primary sorting operation into tailings serving as a first sorting tailing product; of course, each section of sorting operation can also be respectively fed into other equipment for other processing; the selection modes of the sections in the primary selection operation may be magnetic selection, and may also be non-magnetic selection modes such as reselection, flotation, electric selection, and the like, that is, the first selection device 23 includes a plurality of sequentially connected mineral separation devices, which may be magnetic selection devices, and may also be non-magnetic selection devices such as reselection selection devices, flotation selection devices, electric selection devices, and the like. In the embodiment, two stages of ore dressing are taken as an example for explanation: firstly, ore pulp pre-magnetized by the first pre-magnetizer 22 is fed into first-stage ore dressing in primary sorting operation, concentrate obtained after the first-stage ore dressing is fed into second-stage ore dressing for second-stage sorting, the sorted concentrate product meets the sorting index requirement of the section, the concentrate product obtained after the second-stage sorting is used as a first sorting concentrate product in the primary sorting operation, and tailings obtained after the first-stage sorting and the second-stage sorting are mixed and used as a first sorting tailing product in the primary sorting operation. Of course, the number of the stages of the primary sorting operation is not limited to two-stage sorting in the embodiment, the number of the ore dressing stages can be one, two or more, and the sorted product can meet the technical index requirement.

An inlet of the second grading equipment 24 is connected to the concentrate outlet of the first grading equipment 23, and is configured to receive the first grading concentrate product and perform a second grading operation on the first grading concentrate product to obtain a second graded coarse grain product and a second graded fine grain product. Specifically, the first sorted concentrate product obtained by the primary sorting operation is fed into a secondary grading device 24 for secondary grading; the secondary classification device 24 may be a hydrocyclone, or may be another classification device, and is not limited in this embodiment. Obtaining coarse grain products and fine grain products after the second-stage classification through the second-stage classification; wherein, because of different mineral properties, some minerals have large embedded granularity and can be dissociated without fine grinding; some minerals have small embedded particle size and can be dissociated by grinding; therefore, the coarse product and the fine product can be classified into specific defined classification sizes according to actual situations such as the properties of minerals, for example, the coarse product after secondary classification is larger than the second preset classification size, and the fine product after secondary classification is smaller than or equal to the first preset classification size.

An inlet of the secondary ore grinding equipment 27 is connected with a coarse grain outlet of the secondary grading equipment 24, and is used for receiving the coarse grain products after the secondary grading and grinding the coarse grain products after the secondary grading; the inlet of the second-stage grading equipment 24 is also connected with the outlet of the second-stage ore grinding equipment 27, and is used for feeding the product subjected to second-stage ore grinding back to the second-stage grading equipment 24 for grading, so that the second-stage ore grinding equipment 27 and the second-stage grading equipment 24 form an ore grinding grading closed-loop circulation flow. Specifically, the coarse grain product after the second-stage classification is fed into the second-stage ore grinding equipment 27 for second-stage ore grinding, that is, ore grinding is performed again until the product meets the requirement of the particle size, and the product is returned to the second-stage classification equipment 24 to be classified as a fine grain product after the second-stage classification.

The inlet of the second pre-magnetizer 25 is connected with the fine particle outlet of the second-stage grading equipment 24 and is used for receiving the fine particle product after the second-stage grading and pre-magnetizing the fine particle product after the second-stage grading to obtain re-magnetized and agglomerated ore pulp. Specifically, the fine product obtained after the secondary classification is pre-magnetized through a second pre-magnetizer 25 before being fed into a sorting device such as a second sorting device 26, so that the fine mineral particles in the ore pulp are pre-magnetized and agglomerated; wherein, the second pre-magnetizer 25 may be an electromagnetic pre-magnetizer, and may also be a permanent-magnet pre-magnetizer; the second premagnetic device 25 may be a tubular premagnetic device or a box-type premagnetic device, and the working principle, type, working mode, etc. of the second premagnetic device 25 are not limited in this embodiment.

The inlet of the second sorting device 26 is connected to the outlet of the second pre-magnetizer 25 and is configured to receive the re-magnetized and agglomerated ore slurry, perform at least one stage of re-sorting operation on the re-magnetized and agglomerated ore slurry to obtain a second sorted concentrate product and a second sorted tailing product, where the second sorted concentrate product is fed to the concentrate processing device 3 as a primary concentrate, and the second sorted tailing product and the first sorted tailing product are fed to the tailing processing device 4 as a primary tailing. Specifically, the ore pulp obtained after being pre-magnetized by the second pre-magnetizer 25 is fed into the second sorting equipment 26 for re-sorting operation; the second sorting equipment 26 is equipment for performing at least one section of sorting operation on the ore pulp pre-magnetized by the second pre-magnetizer 25, and in the at least one section of sorting operation process, corresponding concentrate products obtained by each section of mineral separation are sequentially fed into the next section of mineral separation equipment for performing the next section of sorting operation until minerals meeting the index requirement are obtained in the last section of sorting operation, and then the re-sorting operation is completed, wherein the concentrate obtained in the last section of sorting operation is the concentrate subjected to the re-sorting operation and is used as a second sorting concentrate product; mixing the tailings obtained in each section of sorting operation in the secondary sorting operation into tailings to serve as a second sorting tailing product; each section of the secondary sorting operation may be magnetic sorting, or may also be non-magnetic sorting such as gravity sorting, flotation, electric sorting, that is, the second sorting apparatus 26 includes a plurality of ore dressing apparatuses connected in sequence, the ore dressing apparatus may be a magnetic sorting apparatus, or may also be non-magnetic sorting apparatus such as gravity sorting apparatus, flotation sorting apparatus, electric sorting apparatus, and the like, for example, the ore dressing apparatus may be magnetic sorting apparatus such as a magnetic suspension sorting machine, an elutriation machine, a magnetic column, and the like, or may also be non-magnetic sorting apparatus such as a flotation machine, a spiral chute, and the like, and this embodiment does not limit the sorting operation method and the sorting apparatus. In the embodiment, two stages of ore dressing are taken as an example for explanation: firstly, the ore pulp pre-magnetized by the second pre-magnetizer 25 is fed into first-stage ore dressing in secondary sorting operation, the concentrate obtained after the first-stage ore dressing is fed into second-stage ore dressing for second-stage sorting, the sorted concentrate product meets the sorting index requirement of the section, the concentrate product obtained after the second-stage sorting is used as a second sorting concentrate product in the secondary sorting operation, and tailings obtained after the first-stage sorting and the second-stage sorting are mixed to be used as a second sorting tailing product in the secondary sorting operation. Of course, the number of the stages of the secondary sorting operation is not limited to two-stage sorting in the embodiment, the number of the ore dressing stages can be one, two or more, and the sorted product can meet the technical index requirement.

In other embodiments, the mineral processing apparatus 2 may also comprise a primary classification apparatus 21, a first pre-magnetizer 22 and a first sorting apparatus 23, i.e. forming a primary classification pre-magnetization and sorting, and the first sorting concentrate product and the first sorting tailing product obtained by the first sorting apparatus 23 are respectively used as the primary tailing and the primary concentrate. Or in multiple stages, for example, in the embodiment shown in fig. 1, two stages are taken as an example, tailings obtained from each stage of separation are used as primary tailings to be fed into a tailing treatment device, and concentrate obtained from the last stage of separation is used as primary concentrate to be fed into a concentrate treatment device.

In this embodiment, the separation is stage grinding, the number of grinding stages is not limited to two-stage grinding in this embodiment, the number of grinding stages may be one stage, two stages, or multiple stages, and the ground product is only needed to be dissociated from mineral particle monomers.

In the embodiment, the pre-magnetizer can pre-magnetize fine-grained minerals with the ore pulp concentration of 5% -30%.

In this embodiment, the beneficiation system is not limited to the grinding and beneficiation series flow in this embodiment, and for a complex beneficiation flow, only a pre-magnetizer is arranged after grinding and grading, and then the ore enters beneficiation equipment.

To sum up, in the beneficiation system provided by this embodiment, after the crushed product is subjected to stage grinding by the first-stage grinding device 1, the ground product is gradually graded, pre-magnetized and sorted by the mineral processing device 2, so as to obtain primary tailings and primary concentrate; carrying out concentrate treatment on the primary concentrate by concentrate treatment equipment 3 to obtain a final concentrate product; and (4) carrying out tailing treatment on the primary tailings through tailing treatment equipment 4 to obtain final tailings after treatment. The ore dressing system can be used together with a sorting device through a pre-magnetizer, fine-grained minerals with ore pulp concentration of 5% -30% are pre-magnetized after being graded and fed into the sorting device, the ore pulp after pre-magnetization is fed into the sorting device for sorting, the fine-grained minerals in the ore pulp can be pre-magnetized and agglomerated, most of the fine-grained minerals in the low-concentration ore pulp are agglomerated into magnetic agglomerates, the mass of the fine-grained minerals is increased, the self gravity of the magnetic agglomerates can overcome the impulsive force of water in the device, the influence of the impulsive force of the water on the motion track of the magnetic agglomerates is reduced, the fine-grained minerals cannot enter tailing overflow along with water flow before being sorted, the retention time of the fine-grained minerals in a sorting area of the device is prolonged, the magnetic agglomerates can be sorted into ore concentrates by the device, the tailing overflow amount of the ore concentrate in a beneficiation flow is reduced, the yield and the recovery rate of the ore concentrate are improved, the grade is reduced, the ore pulp can be efficiently sorted and utilized, and the problems that the fine-grained minerals are more fine-grained minerals in the ore pulp, the low-grained minerals are washed into the tailings and the ore pulp, and the ore pulp run out of the tailings and the like due to the ore pulp without being sorted out of the low-grained minerals under many conditions are solved. Simultaneously, this ore dressing system is favorable to improving the effective comprehensive utilization to mineral resources, promotes ore dressing scientific and technological level, carries out optimization improvement to the selection flow, has obtained one kind and can enough reach the requirement of ore dressing technical index, can improve the novel selection system of selecting efficiency again.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A beneficiation system, comprising: the device comprises a primary grinding device, a mineral processing device, a concentrate processing device and a tailing processing device; wherein the content of the first and second substances,

the primary ore grinding equipment is used for carrying out primary ore grinding treatment on the crushed product;

the inlet of the mineral processing equipment is connected with the outlet of the first-stage ore grinding equipment and is used for receiving the product after the first-stage ore grinding equipment grinds the ore and gradually grading, pre-magnetizing and sorting the product after the ore grinding to obtain primary tailings and primary concentrate;

the inlet of the concentrate treatment equipment is connected with the concentrate outlet of the mineral treatment equipment and is used for receiving the primary concentrate and carrying out concentrate treatment on the primary concentrate to obtain a final concentrate product;

and the inlet of the tailing treatment equipment is respectively connected with the tailing outlet of the mineral treatment equipment and is used for carrying out tailing treatment on the primary tailings to obtain final tailings after treatment.

2. The beneficiation system of claim 1, wherein the mineral processing apparatus comprises: the device comprises a first-stage grading device, a first pre-magnetizer, a first sorting device, a second-stage grading device, a second pre-magnetizer and a second sorting device; wherein the content of the first and second substances,

the inlet of the first-stage grading equipment is connected with the outlet of the first-stage grinding equipment and is used for receiving the ground products of the first-stage grinding equipment and carrying out first-stage grading operation on the ground products to obtain first-stage graded coarse grain products and first-stage graded fine grain products;

the inlet of the first pre-magnetizer is connected with the fine particle outlet of the first-stage grading equipment and is used for receiving the fine particle products after the first-stage grading and pre-magnetizing the fine particle products after the first-stage grading to obtain pre-magnetized and agglomerated ore pulp;

the inlet of the first grading equipment is connected with the outlet of the first pre-magnetizer and is used for receiving the pre-magnetized and agglomerated ore pulp and carrying out at least one section of grading operation on the pre-magnetized and agglomerated ore pulp to obtain a first grading concentrate product and a first grading tailing product;

an inlet of the second-stage grading equipment is connected with a concentrate outlet of the first grading equipment and is used for receiving the first grading concentrate product and performing second-stage grading operation on the first grading concentrate product to obtain a second-stage graded coarse grain product and a second-stage graded fine grain product;

the inlet of the second pre-magnetizer is connected with the fine particle outlet of the secondary grading equipment and is used for receiving the fine particle product after the secondary grading and carrying out pre-magnetizing operation on the fine particle product after the secondary grading to obtain ore pulp which is magnetized and agglomerated again;

and an inlet of the second grading equipment is connected with an outlet of the second pre-magnetizer and is used for receiving the ore pulp magnetized and agglomerated again, and the ore pulp magnetized and agglomerated again is subjected to at least one section of grading operation to obtain a second grading concentrate product and a second grading tailing product, wherein the second grading concentrate product is fed into the concentrate treatment equipment as primary concentrate, and the second grading tailing product and the first grading tailing product are fed into the tailing treatment equipment as primary tailings.

3. The beneficiation system according to claim 2,

and the coarse grain outlet of the primary grading equipment is connected with the inlet of the primary ore grinding equipment, and is used for returning the coarse grain product subjected to primary grading to the primary ore grinding equipment for secondary ore grinding, and feeding the product obtained by secondary ore grinding into the primary grading equipment to form closed ore grinding circulation.

4. The beneficiation system of claim 2, wherein the mineral processing apparatus further comprises: second-stage ore grinding equipment; wherein the content of the first and second substances,

the inlet of the secondary ore grinding equipment is connected with the coarse grain outlet of the secondary grading equipment and is used for receiving the coarse grain product after the secondary grading and grinding the coarse grain product after the secondary grading;

and the inlet of the second-stage grading equipment is also connected with the outlet of the second-stage ore grinding equipment and is used for returning the products subjected to second-stage ore grinding to the second-stage grading equipment for grading, so that the second-stage ore grinding equipment and the second-stage grading equipment form an ore grinding grading closed-loop circulation flow.

5. The beneficiation system according to claim 4, wherein the secondary grinding apparatus and/or the primary grinding apparatus is a ball milling apparatus.

6. The beneficiation system according to claim 2, wherein the primary grading apparatus and/or the secondary grading apparatus is a hydrocyclone.

7. Beneficiation system according to any one of claims 1 to 6,

and the inlet of the tailing treatment equipment is connected with a third pre-magnetizer which is used for pre-magnetizing the primary tailings and feeding the pre-magnetized primary tailings into the tailing treatment equipment for tailing treatment.

8. The beneficiation system according to claim 7,

and the inlet of the concentrate treatment equipment is connected with a fourth pre-magnetizer which is used for pre-magnetizing the primary concentrate and feeding the pre-magnetized primary concentrate into the concentrate treatment equipment for concentrate treatment.

9. The beneficiation system according to claim 8,

the fourth pre-magnetizer, the third pre-magnetizer, the second pre-magnetizer and/or the first pre-magnetizer are/is an electromagnetic pre-magnetizer or a permanent-magnet pre-magnetizer.

10. Beneficiation system according to any one of claims 1 to 6,

the tailing processing equipment is tailing dewatering equipment; and/or the concentrate processing equipment is concentrate dewatering equipment.

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