Background
Molybdenum is an important rare metal and strategic reserve resource, has the excellent characteristics of high melting point, high temperature resistance, good hot hardness and the like, is widely applied to the fields of steel, machinery, electronics, chemical engineering, weapons, aerospace, nuclear industry and the like, and plays an extremely important role in the whole national economy. The reserves of molybdenum ore resources in China are relatively rich, although the reserves of the existing ore are found to be large, most of the reserves of low-grade molybdenum ore deposits with low grades, and the average grade of the reserves of the low-grade molybdenum ore deposits is lower than 0.1 percent and accounts for about 65 percent of the total reserves. The existing lead-containing module mineral processing technology is mainly a grinding-flotation technology, but the technology has the technical defects of high separation cost and capability of increasing the tailing inventory pressure, and simultaneously has certain environmental pollution, so that economic benefits and environmental benefits are all deficient.
The low-grade lead-containing molybdenum ore is used as a main development object, particularly, tailings can be discarded in advance through the screening of an X-ray intelligent sorting machine after primary crushing treatment is carried out on raw ore which tends to become depleted day by day, so that the grade of the raw ore is improved, waste stone entering grinding is reduced, the ore grinding efficiency is improved, the ore dressing treatment capacity is increased, and the comprehensive economic benefit of a dressing plant can be effectively improved.
Utility model patent with application number CN201521010222.8 discloses an ore intelligence sorting facilities based on ray pierces through discernment. The equipment comprises a frame, a blanking bin, a vibration screening feeding device, a fine material receiving hopper, an ore pre-acceleration chute, a belt conveying device, an X-ray transmission identification device, an ore separation box body and a high-pressure air injection actuating mechanism, wherein the blanking bin, the vibration screening feeding device, the fine material receiving hopper, the ore pre-acceleration chute, the belt conveying device, the X-ray transmission identification device, the ore separation box body and the high-pressure air injection actuating mechanism are arranged on the frame; the discharging bin is positioned above the vibrating screening feeding device and feeds materials into the vibrating screening feeding device; the fine material receiving hopper is positioned below the vibrating screening feeding device, and the ore pre-accelerating chute is positioned at the lower part of the discharging end of the vibrating screening feeding device and extends to the upper part of the front end of the belt conveying device in the running direction; the X-ray transmission recognition device is arranged on the upper side and the lower side of the belt above the belt conveying device; a high-pressure air injection actuating mechanism is arranged below the tail end of the belt conveying device in the running direction; the ore separation box body is positioned in a discharge area at the tail end of the belt conveying device and comprises a plurality of hoppers different from the discharge area in distance.
The invention patent with the application number of CN201710193752.8 discloses an intelligent ore sorting device and method based on x-ray identification. The device comprises a feeding unit with a tooth-shaped classifier, an x-ray excitation unit with an optical filter, a characteristic spectrum receiving unit with an optical filter, a computer analysis control unit with a central control machine, a spectrum acquisition system, an industrial control machine and an instruction output system, and a sorting unit with an air cylinder and a wear-resistant kickplate, wherein the feeding unit feeds materials through a vibrating feeder, the materials are classified through the tooth-shaped classifier, the x-ray excitation unit excites ores to be detected to generate a characteristic x-ray spectrum, and the characteristic spectrum receiving unit receives the characteristic x-ray spectrum and is used for a concentrating mill to sort magnetic or non-magnetic ores.
Utility model patent with application number CN201420085205.X discloses an X ray ore intelligence sorting facilities. The separation equipment comprises ore conveying equipment, a feeding bin, a crusher, a vibrating feeder, a vibrating chute, an X-ray separator, an ore separation mechanism, a concentrate receiving tank and a tailing receiving tank.
However, the intelligent sorting device has the technical defects that the ore dressing grade and the comprehensive utilization rate of tailings can not be improved simultaneously, the pressure of a tailing pond is relieved, and meanwhile, a specific sorting method for the lead-containing molybdenum ore types is not provided.
In view of the above, there is a need to design an improved intelligent sorting device for improving the classification grade of lead-containing molybdenum ore, so as to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an improve and contain lead molybdenum ore and enter into intelligent sorting unit who selects the grade.
In order to realize the utility model discloses the purpose, the utility model provides an improve and contain lead molybdenum ore and go into the intelligent sorting unit who selects the grade. The lead-containing molybdenum ore crushing and screening device comprises a raw ore bin for storing lead-containing molybdenum ore blocks, a feeding machine arranged below the raw ore bin, a first crusher connected with the feeding machine and used for performing coarse crushing and secondary crushing treatment on the lead-containing molybdenum ore blocks, a first vibrating screen in transmission connection with the first crusher and used for performing pre-screening treatment on the lead-containing molybdenum ore blocks after crushing treatment, an ore washing screen in transmission connection with the first vibrating screen and used for performing ore washing treatment on the lead-containing molybdenum ore blocks after pre-screening treatment, a spiral classifier and an intelligent classifier which are respectively in transmission connection with the ore washing screen, and an inclined plate thickener connected with the spiral classifier.
As a further improvement of the utility model, first breaker include with batcher transmission connection is used for carrying out the jaw breaker of coarse crushing and respectively with the jaw breaker with batcher transmission connection is used for carrying out the first cone crusher that the piece was handled to the lead-containing molybdenum ore piece.
As a further improvement, the intelligent sorting device for improving the lead-containing molybdenum ore selection grade further comprises a second crusher connected at the bottom of the fine crushing buffer bin and used for performing fine crushing treatment, and the second crusher is connected at the bottom of the fine crushing buffer bin and is respectively connected with the intelligent sorting machine.
As a further improvement of the utility model, improve and contain the intelligent sorting unit that lead molybdenum ore selected the grade still include with intelligent sorter transmission connection just is used for carrying out the third breaker that the plastic was handled to the ore block barren rock after intelligent sorting.
As a further improvement, the intelligent sorting device that improves lead-containing molybdenum ore and enters the ore dressing grade still include with the second shale shaker that the ore after second breaker transmission connection just is used for carrying on the breakage was examined and is sieved the processing.
As a further improvement, the improvement contains the intelligent sorting unit that lead molybdenum ore selected the grade still include with third breaker transmission connection is used for carrying out the third shale shaker that the screening was handled to the barren rock after the plastic crushing treatment.
As a further improvement, the intelligent sorting device for improving the lead-containing molybdenum ore selection grade further comprises a powder ore bin before ore grinding, which is respectively connected with the first vibrating screen, the second vibrating screen and the spiral classifier.
As a further improvement of the utility model, the second vibrating screen is in transmission connection with the fine crushing buffer bin; the second crusher is a second cone crusher.
As a further improvement, the intelligent sorting device for improving the lead-containing molybdenum ore selection grade further comprises a pump tank arranged behind the ore grinding, which is used for storing the underflow, below the inclined plate thickener.
As a further improvement of the utility model, the third crusher is a vertical shaft crusher; the ore washing sieve is arranged on the high-pressure water washing device.
The utility model has the advantages that:
1. the utility model provides an improvement contains lead molybdenum ore and goes into intelligent sorting unit of ore dressing grade can reduce follow-up operation equipment specifications such as ore grinding, flotation, energy saving and consumption reduction, reduce the ore dressing cost, have better economic benefits and environmental benefit.
2. The utility model provides an intelligent sorting unit for improving lead-containing molybdenum ore selection grade, on one hand, can save energy and reduce consumption, effectively reduce the ore dressing cost, improve the ore selection grade, improve the comprehensive utilization rate of ore tailings, and has certain economic benefit; on the other hand, the waste rocks thrown out in advance are used as building material aggregates, so that the amount of tailings discharged into a tailing pond can be reduced, the service life of the tailing pond is prolonged, and certain environmental protection benefits are achieved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Please refer to fig. 1, the utility model provides an improve contain lead molybdenum ore and enter intelligent sorting unit 100 of selection grade, it is including the former ore bin 1 that is used for saving contain lead molybdenum ore piece, set up in the feeder 2 of former ore bin 1 below, with feeder 2 is connected and is used for carrying out the first breaker 3 that the coarse crushing was broken up to lead molybdenum ore piece, first shale shaker 4, wash the ore screen 5, respectively with wash the spiral classifier 6 and the intelligent sorter 7 of ore screen 5 transmission connection, with the swash plate thickener 8 that spiral classifier 6 is adjacent sets up, the buffer bin 9 that breaks in small, with connect and be used for carrying out the second breaker 10 that breaks in small, with the storehouse end of buffer bin 9 that breaks in small, with intelligent sorter 7 transmission connection and be used for carrying out the third breaker 11 that plastic was handled to the ore piece barren rock after intelligent sorting, with second shale shaker 12 that second breaker 10 transmission connection and be used for carrying out inspection screening processing to the ore after breaking, And the third vibrating screen 13 is connected with the third crusher 11 in a transmission manner and used for screening the waste rocks after the shape crushing treatment, the ore grinding front fine ore bin 14 and an ore grinding rear pump pool (not shown in the figure) which is arranged below the inclined plate thickener 8 and used for storing underflow.
In the present embodiment, the first crusher 3 includes a jaw crusher 31 that is connected in transmission with the feeder 2 and is used for coarsely crushing lead-containing molybdenum ore lumps, and a first cone crusher 32 that is connected in transmission with the jaw crusher 31 and the feeder 2 through # 1 belt conveyors, respectively, and is used for performing a middling treatment on the lead-containing molybdenum ore lumps. The first vibrating screen 4 is in transmission connection with the first cone crusher 32 through a # 2 belt conveyor and is used for pre-screening the crushed lead-containing molybdenum ore blocks. The feeder 2 is a rod feeder.
In the embodiment, the first vibrating screen 4 is respectively connected with the pre-grinding powder ore bin 14, the fine crushing buffer bin 9 and the ore washing screen 5 in a transmission way through a belt conveyor.
Specifically, the first vibrating screen 4 is provided with three granularity screening gradients, and ores with minus 12mm under the screen are taken as final products to enter a fine ore bin 14 before ore grinding; the plus 65mm ore on the sieve is conveyed to a fine crushing buffer bin 9 through a No. 3 belt conveyor and then enters a second crusher 10 for fine crushing treatment; the ore with the size of 12 mm-65 mm on the screen enters the ore washing screen 5.
In the embodiment, the ore washing screen 5 is in transmission connection with the first vibrating screen 4 through a # 4 belt conveyor and is used for carrying out ore washing treatment on lead-containing molybdenum ore blocks subjected to pre-screening treatment. The ore washing screen 5 is provided with a high-pressure water washing device 15. Meanwhile, the ore washing screen 5 is connected with one end of the spiral classifier 6. The other end of the spiral classifier 6 is connected with the inclined plate thickener 8.
Specifically, after the ore washing treatment of the ore washing sieve 5, the slime pulp under the sieve of the ore washing sieve 5 enters a spiral classifier 6, the spiral classifier 6 overflows into an inclined plate thickener 8, and the settled sand of the spiral classifier 6 enters a fine ore bin 14 before ore grinding. Meanwhile, the bottom flow of the inclined plate thickener 8 enters an ore grinding rear pump pool, and the overflow water of the inclined plate thickener 8 is recycled.
In the embodiment, the top end of the intelligent separator 7 is in transmission connection with the ore washing screen 5 through a No. 5 belt conveyor, and the bottom end of the intelligent separator 7 is in transmission connection with the fine crushing buffer bin 9 and the third crusher 11 through No. 6 and No. 7 belt conveyors respectively. The third crusher 11 is a vertical shaft crusher.
Specifically, after ore washing treatment, ores 12mm to 65mm on a sieve of the ore washing sieve 5 enter an X-ray intelligent sorting machine 7, sorting waste rocks and sorting concentrate are obtained after intelligent sorting, and the sorting waste rocks are transmitted to a third crusher 11 for crushing and shaping treatment. The selected ore concentrate enters the second crusher 10 through the bottom of the fine crushing buffer bin 9 to be subjected to fine crushing treatment, the fine crushed ore comprises +65mm ore pre-screened by the first vibrating screen 4 and the selected ore concentrate separated by the X-ray intelligent separator 7, three ore components of the oversize ore subjected to the inspection and screening treatment by the second vibrating screen 12 after the fine crushing treatment, the three ore components are subjected to fine crushing treatment and then enter the second vibrating screen 12 to be subjected to the inspection and screening, the minus 12mm ore under the inspection and screening sieve enters the powder bin 14 before grinding, and the plus 12mm ore on the sieve returns to the fine crushing buffer bin 9 in a closed circuit.
In this embodiment, the fine crushing buffer bin 9 is respectively connected with the first vibrating screen 4, the intelligent sorting machine 7 and the second vibrating screen 12 through 3#, 6#, and 8# belt conveyors in a transmission manner, so that the ores with the size of +65mm pre-screened by the first vibrating screen 4 and the sorted concentrates sorted by the intelligent X-ray sorting machine 7 are uniformly mixed, and the three ore components of the screened ores detected by the second vibrating screen 12 after the fine crushing treatment are uniformly mixed and conveyed to the second crusher 10. The second crusher 10 is a second cone crusher.
In the present embodiment, the third vibrating screen 13 is connected to the third crusher 11 by a 10# belt conveyor for screening the crushed and shaped waste rock and further processing the waste rock into building aggregate for sale or use.
Specifically, the third vibrating screen 13 is provided with three particle size screening gradients, namely waste rocks of 0-5mm below the screen, waste rocks of 5-10mm above the screen, waste rocks of 10-20mm above the screen, and waste rocks of 20-31.50mm above the screen.
In the present embodiment, the pre-grinding fine ore bin 14 is in transmission connection with the first vibrating screen 4, the second vibrating screen 12 and the spiral classifier 6 through a # 11 belt conveyor.
Referring to fig. 2, the working principle of the intelligent sorting apparatus 100 for improving the lead-containing molybdenum ore grading grade is as follows:
1. the method comprises the following steps of sequentially transmitting ores with the maximum lumpiness of 750mm in a raw ore bin 1 to a jaw crusher 31 and a first cone crusher 32 through a feeder 2 for coarse crushing and intermediate crushing, then transmitting the crushed ores to a first vibrating screen 4 for pre-screening, feeding minus 12mm ores as final products into a powder ore bin 14 before grinding, feeding plus 65mm ores on the screen into a fine crushing buffer bin 9, and feeding 12 mm-65 mm ores on the screen into a washing screen 5;
2. after washing the ore by the washing screen 5, the mud-containing ore pulp under the screen of the washing screen 5 enters the spiral classifier 6, the spiral classifier 6 overflows into the inclined plate thickener 8, and the settled sand of the spiral classifier 6 enters the powder ore bin 14 before grinding; the bottom flow of the inclined plate thickener 8 enters an ore grinding rear pump pool, and the overflow water of the inclined plate thickener 8 is recycled;
3. after ore washing, feeding ores with the size of 12-65 mm on a sieve of a washing sieve 5 into an X-ray intelligent sorting machine 7, intelligently sorting to obtain sorted waste rocks and sorted concentrate, sequentially feeding the sorted waste rocks into a third crusher 11 and a third vibrating screen 13, crushing and screening to obtain building aggregate for sale, and feeding the sorted concentrate into a fine crushing buffer bin 9;
4. the ores in the fine crushing buffer bin 9 comprise ores with the size of +65mm screened in advance and concentrates intelligently sorted by X rays, then the ores are conveyed to a second crusher 10 at the bottom of the bin to be subjected to fine crushing treatment, the finely crushed ores enter a second vibrating screen 12 to be subjected to inspection and screening treatment, the ores with the size of-12 mm below the inspection and screening screen enter a powder ore bin 14 before grinding, and the ores with the size of +12mm above the screen return to the fine crushing buffer bin 9 in a closed circuit.
Based on this intelligent sorting unit 100 who improves lead-containing molybdenum ore and enter the selected grade, the intelligence that obtains is selected separately the efficiency and is: the utility model discloses a lead-containing molybdenum ore be the primary ore that the oxidation rate is less than or equal to 30%, wherein molybdenum, plumbous grade are 0.072%, 0.097% respectively. Wherein, after the ore with the diameter of 12 mm-65 mm enters an X-ray intelligent separator 7 and is intelligently separated, the grades of molybdenum and lead in the separated concentrate are respectively 0.098% and 0.14%, the operation rejection rate is about 35.87%, and the rejection rate accounts for 18% -25% of the raw ore. Therefore, the utility model provides a sorting unit can reduce follow-up operation equipment specifications such as ore grinding, flotation, energy saving and consumption reduction, reduction ore dressing cost, improve ore and go into the ore dressing grade, the barren rock of jettisoning in advance is used for the reducible tailing volume of discharging into the tailing storehouse of building materials aggregate, improves the comprehensive utilization of tailing, alleviates the pressure in tailing storehouse.
To sum up, the utility model provides an improve and contain plumbous molybdenum ore and enter into intelligent sorting unit who selects the grade. The lead-containing molybdenum ore crushing and screening device comprises a raw ore bin for storing lead-containing molybdenum ore blocks, a feeding machine arranged below the raw ore bin, a first crusher connected with the feeding machine and used for performing coarse crushing and secondary crushing treatment on the lead-containing molybdenum ore blocks, a first vibrating screen in transmission connection with the first crusher and used for performing pre-screening treatment on the lead-containing molybdenum ore blocks after crushing treatment, an ore washing screen in transmission connection with the first vibrating screen and used for performing ore washing treatment on the lead-containing molybdenum ore blocks after pre-screening treatment, a spiral classifier and an intelligent classifier which are respectively in transmission connection with the ore washing screen, and an inclined plate thickener connected with the spiral classifier. The device can reduce the specification of subsequent operation equipment such as ore grinding, flotation and the like, save energy, reduce consumption, reduce the ore dressing cost, improve the ore selecting grade, reduce the amount of tailings discharged into a tailing pond by using the waste rocks discarded in advance as building aggregates, improve the comprehensive utilization rate of the tailings and relieve the pressure of the tailing pond.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.