CN219540551U - Ore breaking and grinding system - Google Patents
Ore breaking and grinding system Download PDFInfo
- Publication number
- CN219540551U CN219540551U CN202320568923.1U CN202320568923U CN219540551U CN 219540551 U CN219540551 U CN 219540551U CN 202320568923 U CN202320568923 U CN 202320568923U CN 219540551 U CN219540551 U CN 219540551U
- Authority
- CN
- China
- Prior art keywords
- ore
- crushing
- grinding
- communicated
- station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses an ore crushing and grinding system which comprises a crushing station, a pre-screening system and an ore grinding system, wherein the crushing station comprises a main crushing station and an auxiliary feeding station, the main crushing station and the auxiliary feeding station are both communicated with the feeding end of the pre-screening system, the discharging end of the pre-screening system is communicated with the feeding end of the ore grinding system, the discharging end of the ore grinding system is communicated with a flotation system, the main crushing station crushes ores with the particle size of 0-1000 mm to less than 275mm, and the auxiliary feeding station crushes ores with the particle size of 0-300 mm to less than 275mm. The crushed ore enters a pre-screening system, materials smaller than 2mm are directly sent into a slag grinding pulp pump pool and then classified, materials not smaller than 2mm enter a grinding system, and overflow products are finally obtained after grinding and classification and are supplied to a flotation system. The utility model increases the reliability and stability of the crushing station, realizes continuous ore feeding to the grinding float, and saves the equipment investment cost.
Description
Technical Field
The utility model relates to the technical field of ore crushing and grinding, in particular to an ore crushing and grinding system.
Background
Along with the continuous large-scale mine construction, more and more concentrating mills adopt the process flow of grinding SAB (C), and the process flow has the characteristics of compact equipment configuration, small occupied area, less environmental pollution, high automation degree and the like, and is commonly in the form of a crushing station, an intermediate ore heap and a grinding system, wherein the intermediate ore heap is mainly used for storing crushed qualified grade materials, ensuring the continuity of production links between the crushing system and external transportation and internal working procedures, playing a role of buffering and adjusting, and realizing the purpose of continuous feeding for grinding operation.
However, in actual production, it has been found that there are certain drawbacks to using the "SAB (C)" grinding process to treat high oxidation rate ores. The main reason is that the ore contains more fine ore, is easy to generate mud in rainy season, causes the blockage of the blanking opening of the middle ore heap, and can not continuously feed the grinding ore. Meanwhile, a large amount of manpower and material resources are required to be spent for dredging the plugging points, and a large potential safety hazard exists.
Some mines choose to cancel the intermediate heap in order to avoid the intermediate heap blocking, and the crushed products are directly fed into a grinding system. However, because the traditional crushing station only has one ore feeding line containing a crusher, when key equipment such as the crusher is maintained or stopped due to faults, continuous feeding of an ore grinding system cannot be realized due to the lack of buffering action of an intermediate ore heap, and the subsequent grinding and floating operation can be synchronously stopped, so that the effective operation days of mines are seriously influenced.
Disclosure of Invention
The utility model provides an ore crushing and grinding system, which aims to solve the technical problem that the front end of the existing grinding system cannot continuously feed the grinding system when crushing and grinding ores containing more powder ores.
The utility model provides an ore crushing and grinding system, which comprises a crushing station, a pre-screening system and an ore grinding system, wherein the crushing station comprises a main crushing station and an auxiliary feeding station, the main crushing station and the auxiliary feeding station are both communicated with the feeding end of the pre-screening system, the discharging end of the pre-screening system is communicated with the feeding end of the ore grinding system, the discharging end of the ore grinding system is communicated with a flotation system,
the main crushing station and the auxiliary feeding station are vertically or approximately vertically distributed on the same plane, the main crushing station crushes ores with the particle size of 0-1000 mm to less than 275mm, and the auxiliary feeding station crushes ores with the particle size of 0-300 mm to less than 275mm.
Further, the main crushing station comprises a first raw ore bin, a first grid screen, a first heavy-duty plate feeder and a jaw crusher, wherein the first grid screen performs primary screening on ore entering the first raw ore bin, so that part of ore below the screen directly enters the first heavy-duty plate feeder and the jaw crusher in sequence.
Further, the main crushing station further comprises a first oil hammer which crushes part of ore on the screen of the first grid screen, so that the part of ore passes through the first grid screen and sequentially enters the first heavy plate feeder and the jaw crusher.
Further, the auxiliary feeding station comprises a second raw ore bin, a second grid screen and a second heavy plate type feeder, wherein the second grid screen performs primary screening on ore entering the second raw ore bin, so that part of ore below the screen directly enters the second heavy plate type feeder.
Further, the auxiliary feeding station also comprises a second oil hammer which breaks up part of the ore on the screen of the second grid screen so that it passes through the second grid screen 21 and into the second heavy plate feeder.
Further, the discharge end of the pre-screening system comprises an upper part outlet and a lower part outlet, the ore grinding system comprises a semi-autogenous mill, coarse fraction screening equipment, a slag pulp pump pool, a slag pulp pump, fine fraction classifying equipment, a ball mill and a refractory stone crushing system, the upper part outlet of the pre-screening system is communicated with the feed end of the semi-autogenous mill, the lower part outlet of the pre-screening system is communicated with the feed end of the slag pulp pump pool, the discharge end of the semi-autogenous mill is communicated with the feed end of the coarse fraction screening equipment, the discharge end of the coarse fraction screening equipment comprises an upper part outlet and a lower part outlet, the upper part outlet of the coarse fraction screening equipment is communicated with the feed end of the refractory stone grinding system, the lower part outlet of the coarse fraction screening equipment is communicated with the feed end of the slag pulp pump pool, the discharge end of the slag pulp pump is communicated with the feed end of the slag pulp pump, the discharge end of the slag pulp pump is communicated with the lower part of the fine fraction screening equipment, and the upper part outlet of the coarse fraction screening equipment is communicated with the feed end of the fine fraction grinding system.
Further, the stubborn stone crushing system comprises a stubborn stone bin and a fine fraction crusher, wherein the feeding end of the stubborn stone bin is communicated with the outlet of the upper part of the sieve of the coarse fraction screening device, the discharging end of the stubborn stone bin is communicated with the feeding end of the fine fraction crusher, and the discharging end of the fine fraction crusher is communicated with the feeding end of the semi-autogenous mill.
Further, the pre-screening system (4) comprises a washer, a cylindrical screen or a linear vibrating screen.
The utility model has the following beneficial effects:
(1) Based on the inherent characteristics of ores, the utility model creatively cancels intermediate piles or other storage facilities in the prior art, thereby greatly saving the mine construction cost. The optimized process flow has stronger adaptability to ores containing more powder ores, and the possible blockage faults are reduced from the root.
(2) The crushing station is provided with a set of main crushing system and a set of auxiliary feeding system, the main crushing system and the auxiliary feeding system can supply ore independently, but the configuration is different, the main crushing system can be used for processing raw ore with the thickness of 0-1000 mm, and the auxiliary feeding system is used for processing raw ore with the thickness of 0-300 mm. The scheme not only increases the reliability and stability of the crushing station and realizes the purpose of continuously feeding ore to the grinding float, but also saves the equipment purchasing cost to the maximum extent.
(3) The pre-screening system can separate out partial fine particle ore in the raw ore in advance, so that the load of the semi-autogenous mill is effectively reduced, and the comprehensive productivity of the ore grinding system is improved.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic diagram of the structure of a crushing and grinding system for treating high oxidation rate ores according to a preferred embodiment of the present utility model.
Legend description:
100. a crushing station; 1. a main crushing station; 11. a first grid; 12. a first raw ore bin; 13. a first heavy duty plate feeder; 14. jaw crusher; 15. a first belt conveyor; 16. a first oil hammer; 2. an auxiliary feeding station; 21. a second grid; 22. a second raw ore bin; 23. a second heavy plate feeder; 24. a second belt conveyor; 25. a second oil hammer; 3. a third belt conveyor; 4. a pre-screening system; 5. a grinding system; 51. a fine fraction crusher; 52. a fourth belt conveyor; 53. semi-autogenous mill; 54. coarse fraction screening equipment; 55. a fifth belt conveyor; 56. a stubborn stone bin; 57. a sixth belt conveyor; 58. grinding slag pulp pump pool; 59. a slurry pump; 510. ball mill; 511. fine fraction classification equipment; 6. a flotation system; 7. a loader.
Detailed Description
In order to make the objects, technical solutions and advantageous technical effects of the present utility model clearer, the present utility model will be further described in detail with reference to examples. It should be understood that the examples described in this specification are for the purpose of illustrating the utility model only and are not intended to limit the utility model.
For simplicity, only a few numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form a range not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and any upper limit may be combined with any other upper limit to form a range not explicitly recited. Furthermore, each point or individual value between the endpoints of the range is included within the range, although not explicitly recited. Thus, each point or individual value may be combined as a lower or upper limit on itself with any other point or individual value or with other lower or upper limit to form a range that is not explicitly recited.
In the description herein, unless otherwise indicated, "above" and "below" are intended to include the present number, "one or more" means two or more, and "one or more" means two or more.
An embodiment of the first aspect of the present utility model provides an ore crushing and grinding system, comprising a crushing station 100, a pre-screening system 4 and a grinding system 5, wherein the crushing station 100 comprises a main crushing station 1 and an auxiliary feeding station 2, the main crushing station 1 and the auxiliary feeding station 2 are both communicated with a feeding end of the pre-screening system 4, a discharging end of the pre-screening system 4 is communicated with a feeding end of the grinding system 5, and a discharging end of the grinding system 5 is communicated with a flotation system 6.
The main crushing station 1 and the auxiliary feeding station 2 are vertically or approximately vertically distributed on the same plane, the main crushing station 1 crushes ores with the particle size of 0-1000 mm to less than 275mm, and the auxiliary feeding station 2 crushes ores with the particle size of 0-300 mm to less than 275mm.
In the embodiment of the present utility model, as shown in fig. 1, the crushing station 100 includes two independent ore feeding systems, including a main crushing system and an auxiliary feeding system, which are vertically arranged on the same plane, so that independent ore feeding can be achieved. The crushing station 100 is not followed by intermediate piles or any other form of storage facility, and the acceptable size fraction ore processed by the crushing station 100 enters the pre-screening system 4. The acceptable grade ore processed by the crushing station 100 may be sent to the pre-screening system 4 by a first belt conveyor.
According to the embodiment of the utility model, the crushing station 100 can realize continuous and stable ore feeding for the pre-screening system, and the main crushing system is adopted to process ore mainly comprising lump ore (the grain size is 0-1000 mm) during normal production; when the main crushing system is maintained or stopped in fault, the auxiliary feeding system is adopted to process ore (the grain size is 0-300 mm) mainly containing powder ore.
In an embodiment of the utility model, the main crushing station 1 comprises a first raw ore bin 12, a first grid 11, a first heavy-duty plate feeder 13, and a jaw crusher 14, the first grid 11 pre-screens ore entering the first raw ore bin 12, causing undersize portions of the ore to enter the first heavy-duty plate feeder 13 and the jaw crusher 14 directly in sequence.
In some embodiments, the first grid 11 of the main crushing station 1 is mounted on top of a first raw ore bin 12, said first grid 11 being adjustable in size. The first heavy-duty plate feeder 13 is installed at the bottom of the first raw ore bin 12 in an upward inclined mode, the angle is 17 degrees, and a chain curtain is installed at the head of the first heavy-duty plate feeder 13 to play a role in buffering ores. The jaw crusher 14 jaw is connected to the head of the first heavy-duty apron feeder 13.
In some embodiments, a first rubber belt conveyor 15 is also mounted in the lower part of the first heavy-duty plate feeder 13, jaw crusher 14, for conveying the treated ore.
In an embodiment of the utility model, the main crushing station 1 further comprises a first oil hammer 16, wherein the first oil hammer 16 crushes the upper screen part of the ore of the first grid 11, so that the ore passes through the first grid 11 and sequentially enters the first heavy plate feeder 13 and the jaw crusher 14.
In some embodiments, the main crushing station 1 operates in the following manner: the ore mainly comprising lump ore is conveyed to a first raw ore bin 12 of a main crushing station 1, and after being pre-screened by a first grid screen 11, undersize materials are fed into a jaw crusher 14 by a first heavy plate feeder 13 to be crushed to qualified grain grade; the oversize material of the first grid 11 is further crushed by the first oil hammer 16 and fed again to the main crushing system. The size of the qualified material after being processed by the crushing station 100 is less than 275mm.
In the embodiment of the utility model, the auxiliary feeding station 2 comprises a second raw ore bin 22, a second grid screen 21 and a second heavy plate feeder 23, wherein the second grid screen 21 performs primary screening on ore entering the second raw ore bin 22, so that part of ore under screen directly enters the second heavy plate feeder 23.
In some embodiments, the second screen 21 of the auxiliary feeder station 2 is mounted on top of the second raw ore bin 22, the second screen 21 being adjustable in size. The second heavy plate feeder 23 is horizontally arranged at the top of the second raw ore bin 22, and a chain curtain is arranged at the head of the second heavy plate feeder 23 to buffer ores.
In some embodiments, a second belt conveyor 24 is also mounted in the lower part of the second heavy plate feeder 23 for conveying the treated ore.
In an embodiment of the utility model, the auxiliary feeding station 2 further comprises a second oil hammer 25, said second oil hammer 25 crushing the screen-top part of the ore of the second grid 21, so that it passes through the second grid 21 and into the second heavy plate feeder 23.
In some embodiments, the ore mainly comprising the powder ore is conveyed to a second raw ore bin 22 of the auxiliary feeding station 2, and after being pre-screened by a second grid screen 21, the undersize material is qualified; the oversize material is further crushed by the second oil hammer 25 and fed again to the auxiliary feeding system. The size of the qualified material after being processed by the crushing station 100 is less than 275mm.
In the embodiment of the utility model, the discharge end of the pre-screening system 4 comprises an upper-screen part outlet and a lower-screen part outlet, the ore grinding system 5 comprises a semi-autogenous mill 53, a coarse fraction screening device 54, a slag pulp pump 58, a slag pulp pump 59, a fine fraction classification device 511, a ball mill 510 and a stubby stone crushing system, the upper-screen part outlet of the pre-screening system 4 is communicated with the feed end of the semi-autogenous mill 53, the lower-screen part outlet is communicated with the feed end of the slag pulp pump 58, the discharge end of the semi-autogenous mill 53 is communicated with the feed end of the coarse fraction screening device 54, the upper-screen part outlet of the coarse fraction screening device 54 is communicated with the feed end of the stubby stone system, the lower-fraction outlet of the coarse fraction screening device 54 is communicated with the feed end of the slag pulp pump 58, the discharge end of the slag pulp pump 58 is communicated with the fine fraction pump 511, the upper-fraction classification device 59 is communicated with the feed end of the fine fraction pump 59, and the fine fraction classification device 510 is communicated with the feed end of the fine fraction classification device 58.
In some embodiments, the material conveyed by the first and second belt conveyors 24 is conveyed via the third belt conveyor 3 to a pre-screening apparatus, the pre-screening apparatus oversize material is conveyed via the fourth belt conveyor 52 to a semi-autogenous mill 53, and the undersize material is conveyed via a pipeline to a slag grinding pump pond 58.
In some embodiments, the coarse fraction screening apparatus 54 includes, but is not limited to, a linear vibrating screen or a cylindrical screen. The fine fraction classification equipment typically employs hydrocyclones or spiral classifiers.
In some embodiments, the grinding system 5 semi-autogenous mill 53 and the ball mill 510 are arranged in a straight line, the coarse fraction screening device 54 is installed directly below the ore discharge opening of the semi-autogenous mill 53, the slag slurry pump tank 58 is installed directly below the coarse fraction screening device 54, and the fine fraction classification device 511 is installed above the feed opening of the ball mill 510.
In some embodiments, the semi-autogenous mill 53 discharges from the ore to a coarse fraction screening device 54, and the coarse fraction screening device 54 delivers oversize material to the stubby crushing system via a fifth belt conveyor 55, and the undersize material discharges to a slag grinding pump pond 58. The material in the slag grinding pump pool 58 is pumped to the fine fraction classification device 511 through the slag grinding pump, the fine fraction classification device is provided with sand setting self-flowing back to the ball mill 510, the ore discharging of the ball mill 510 self-flows to the slag grinding pump pool 58, and the overflow can self-flow to the flotation system 6.
In some embodiments, semi-autogenous mill 53 has an aspect ratio of 4.5:8.5, ball mill 510 has an aspect ratio of 10.2:6.2. The semi-autogenous mill 53 is added with forging balls as grinding media, the diameters of the forging balls are 120mm, 100mm and 75mm respectively, and the initial filling mass of the forging balls and the grinding media is 51:36:13. The ball mill 510 is added with casting balls as grinding media, the diameters are respectively 60mm, 40mm and 30mm, and the initial filling mass of the three materials is 60:30:10.
In an embodiment of the present utility model, the stubby crushing system includes a stubby bin 56 and a fine fraction crusher 51, wherein a feed end of the stubby bin 56 is communicated with an outlet of the upper screen portion of the coarse fraction screening apparatus 54, a discharge end of the stubby bin 56 is communicated with a feed end of the fine fraction crusher 51, and a discharge end of the fine fraction crusher 51 is communicated with a feed end of the semi-autogenous mill 53.
In some embodiments, the fine fraction crusher 51 includes, but is not limited to, a cone crusher or a impact crusher. The stubby stone bin 56 is arranged directly above the fifth belt conveyor 55, and the materials in the stubby stone bin 56 enter the fine fraction crusher 51 through the sixth belt conveyor 57. The stubby stone bin 56 is internally provided with a level gauge, and can realize interlocking control with the fine fraction crusher 51.
In an embodiment of the present utility model, the pre-screening system 4 includes, but is not limited to, a washer, a cylindrical screen, or a linear vibrating screen. The ore washer, the cylinder screen or the linear vibrating screen can achieve the purpose of pre-screening ores, and after pre-screening, materials smaller than 2mm are sent into a slag grinding slurry pump tank 58, and materials not smaller than 2mm enter the ore grinding system 5.
The pre-screening is mainly used for screening out fine particles in ores in advance, so that materials meeting the classification requirements are classified by a slurry pump pool, the load of a semi-autogenous mill is reduced, the comprehensive productivity of a grinding system is improved, and on the other hand, fine particles are prevented from entering the grinding system and are subjected to overgrinding and mud formation.
The material of the slag grinding pulp pump pool has three sources, one is the undersize product of the pre-screening device, the other is the undersize product of the coarse fraction screening device, the other is the ore discharging of the ball mill, and the slag grinding pulp pump pool generally controls the grain size to be less than 2mm for 80% of the material, so that the pre-screening device selects 2mm, the follow-up fine fraction classification operation is facilitated, and the classification operation efficiency is improved.
In some embodiments, the pre-screening process comprises: the crushed material from the crushing station 100 enters a pre-screening system 4, and the pre-screening and dividing particle size is 2mm. After pre-screening, enabling the oversize material particles to be +2mm, and enabling the oversize material particles to enter a semi-autogenous mill 53 for ore grinding through a fourth rubber belt conveyor 52; the undersize material has a particle size of-2 mm and enters a slag grinding pump sump 58.
In some embodiments, the grinding classification process includes: the oversize material from the pre-screening enters a semi-autogenous mill 53 for grinding, and the ground material is discharged to a coarse fraction screening device 54, and the coarse fraction screening device 54 divides the granularity into 15mm. Screening, wherein the particle size of the material on the screen is +15mm, and the material enters a stubborn stone crushing system; the undersize material has a size fraction of-15 mm and enters a slag grinding pump sump 58. The ground slag slurry pump pool 58 is pumped to the fine fraction classification device 511 through the slag slurry pump 59, after classification, settled sand enters the ball mill 510 for grinding, and overflows (-0.074 mm to 75%) enter the flotation system 6. The material after grinding by ball mill 510 is also discharged to slag grinding pump basin 58.
In some embodiments, the stubby crushing process is such that oversize material from coarse fraction screening apparatus 54 enters fine fraction crusher 51, the crushed material having a size fraction P 80 This material was returned to the milling system 5 for re-milling classification =12 mm.
An embodiment of the second aspect of the present utility model provides a process for the comminution of ores comprising the steps of:
(1) Crushing ores with the particle size of 0-1000 mm by a main crushing station 1, and/or processing ores with the particle size of 0-300 mm by an auxiliary feeding station 2 to obtain crushed ores, wherein the particle size of the crushed ores is smaller than 275mm;
(2) The crushed ore enters a pre-screening system 4 for pre-screening, materials with the diameter not smaller than 2mm enter a semi-autogenous mill 53 for ore grinding, and materials with the diameter smaller than 2mm enter a slag grinding pulp pump pool 58;
(3) The materials of the semi-autogenous mill 53 are ground and then are screened by coarse fraction screening equipment 54, materials with the size not smaller than 15mm enter a stubborn stone crushing system for treatment, and materials with the size smaller than 15mm enter a slag grinding slurry pump tank 58;
(4) The materials entering the stubby stone crushing system are crushed and then enter the semi-autogenous mill 53 again for grinding, and the step (3) is returned;
(5) The material entering a slag grinding slurry pump pool (58) is sent into a fine-particle-grade grading device (511) by a slag slurry pump (59) for grading, the upper outlet product of the fine-particle-grade grading device (511) is overflow, and the overflow enters a flotation system (6), wherein the proportion of the fine-particle-grade material smaller than 0.074mm in the overflow is not lower than 75%; the lower outlet product is settled sand, and the dust sand enters a ball mill (510) for grinding, wherein the proportion of the granular material smaller than 0.074mm in the dust sand is 10% -15%;
(6) After grinding the materials entering the ball mill 510, the materials re-enter the slag grinding pump tank 58 and return to the step (5) until all the materials enter the flotation system 6.
According to the embodiment of the utility model, coarse fraction screening equipment mainly processes ore grinding products of a semi-autogenous mill, and screening is carried out by adopting 15mm, so that coarse fraction ore with the size of more than 15mm can enter a stubborn stone crushing system for crushing, multiple crushing and multiple grinding are realized, and the ore grinding efficiency is improved.
The classification of the fine fraction equipment is adjustable in the classification size fraction composition, so classification according to the step (5) is required, mainly because the grinding classification is used for providing qualified size fraction materials for flotation, so that full monomer dissociation of minerals is realized, and the flotation generally requires that the size fraction materials with the size of less than 0.074mm account for not less than 75%.
The fine fraction separating device generally adopts a hydrocyclone or a spiral classifier, has high classifying efficiency, compact device arrangement, small occupied area and convenient maintenance.
In the embodiment of the utility model, the material entering the stubby stone crushing system firstly enters the stubby stone bin 56 and then enters the fine-fraction crusher 51 for crushing, and the crushed material enters the semi-autogenous mill 53 again for grinding.
Examples
The present disclosure is more particularly described in the following examples that are intended as illustrations only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the examples below are by weight, and all reagents used in the examples are commercially available or were obtained synthetically according to conventional methods and can be used directly without further treatment, as well as the instruments used in the examples.
Example 1
The breaking and grinding process system of the utility model is used for treating copper-cobalt ore with a certain oxidation rate of 75 percent, the Mohs hardness of the ore is 8-10, and the bulk density of the material is 1.77t/m 3 The maximum size fraction was 1000mm. Raw ore comes from a pit, the raw ore is fed into a first raw ore bin 12 of a main crushing station 1 by a loader 7, the ore supply is 250t/h, the size of a first grid screen 11 is 650mm x 650mm, and undersize materials are fed into a jaw crusher 14 by a first heavy plate feeder 13 to be crushed into qualified grain sizes; the oversize material of the first grid screen 11 is crushed further by an oil hammer until the diameter is less than or equal to 650mm and then is fed into the main crushing station 1 again. Processed by a main crushing station 1The final ore grain size of less than or equal to 275mm is fed into a pre-screening system 4 through a first belt conveyor 15 and a third belt conveyor 3 in sequence, the materials with the sizes not less than 2mm on the screen are fed into a semi-autogenous mill (53) for ore grinding, and the ore quantity is 200t/h; the undersize is the material less than 2mm. Enters a slag grinding pulp pump pool (58), and the ore quantity is 50t/h. After being treated by the ore grinding system, the overflow product which enters the flotation system, namely 0.074mm, accounts for 75 percent, and the ore quantity is 250t/h.
Example 2
The breaking and grinding process system of the utility model is used for treating copper-cobalt ore with a certain oxidation rate of 75 percent, the Mohs hardness of the ore is 8-10, and the bulk density of the material is 1.77t/m 3 The maximum size fraction was 300mm. Raw ore comes from a fine-fraction ore stock yard near the crushing station 100, a second raw ore bin 22 of an auxiliary feeding system is fed by a loader 7, the ore supply amount is 280t/h, the size of a second grid screen 21 is 200mm by 200mm, and the undersize material is qualified fraction; the oversize material of the second grid 21 is further crushed to less than or equal to 200mm by an oil hammer and then is fed into the auxiliary feeding system again. The final ore grain size treated by the auxiliary feeding system is less than or equal to 275mm, the second belt conveyor 24 and the third belt conveyor 3 are sequentially fed into the pre-screening system 4, and the materials with the grain size not less than 2mm on the screen enter a semi-autogenous mill (53) for grinding, wherein the ore quantity is 200t/h; the material with the undersize of less than 2mm enters a slag grinding pulp pump tank (58), and the ore quantity is 80t/h. After being treated by the ore grinding system, the overflow product which enters the flotation system, namely 0.074mm, accounts for 75 percent, and the ore quantity is 280t/h.
While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (8)
1. The ore crushing and grinding system is characterized by comprising a crushing station (100), a pre-screening system (4) and a grinding system (5), wherein the crushing station (100) comprises a main crushing station (1) and an auxiliary feeding station (2), the main crushing station (1) and the auxiliary feeding station (2) are both communicated with the feeding end of the pre-screening system (4), the discharging end of the pre-screening system (4) is communicated with the feeding end of the grinding system (5), the discharging end of the grinding system (5) is communicated with a flotation system (6),
the main crushing station (1) and the auxiliary feeding station (2) are vertically or approximately vertically distributed on the same plane, the main crushing station (1) crushes ores with the particle size of 0-1000 mm to less than 275mm, and the auxiliary feeding station (2) crushes ores with the particle size of 0-300 mm to less than 275mm.
2. An ore crushing and grinding system according to claim 1, characterized in that the main crushing station (1) comprises a first raw ore bin (12), a first grid screen (11), a first heavy-duty plate feeder (13), and a jaw crusher (14), the first grid screen (11) primary-screens ore entering the first raw ore bin (12) with undersize portions of ore entering the first heavy-duty plate feeder (13) and the jaw crusher (14) directly in sequence.
3. An ore crushing and grinding system according to claim 2, characterized in that the main crushing station (1) further comprises a first oil hammer (16), the first oil hammer (16) crushing the on-screen part of the ore of the first grid (11) through the first grid (11) into a first heavy-duty plate feeder (13) and a jaw crusher (14) in sequence.
4. An ore crushing and grinding system according to claim 1, characterized in that the auxiliary feeding station (2) comprises a second raw ore bin (22), a second screen (21) and a second heavy plate feeder (23), the second screen (21) primary screening the ore entering the second raw ore bin (22) so that part of the undersize ore directly enters the second heavy plate feeder (23).
5. An ore crushing and grinding system according to claim 4, characterized in that the auxiliary feeding station (2) further comprises a second oil hammer (25), the second oil hammer (25) crushing the on-screen part of the ore of the second grid (21) through the second grid (21) into the second heavy plate feeder (23).
6. An ore crushing and grinding system according to claim 1, characterized in that the discharge end of the pre-screening system (4) comprises an upper screen section outlet and an under screen section outlet,
the ore grinding system (5) comprises a semi-automatic mill (53), coarse fraction screening equipment (54), a slag grinding slurry pump pool (58), a slag slurry pump (59), fine fraction classifying equipment (511), a ball mill (510) and a stubborn stone crushing system, an outlet of a screen part of the pre-screening system (4) is communicated with a feeding end of the semi-automatic mill (53), an outlet of a screen part is communicated with a feeding end of the slag grinding slurry pump pool (58), a discharging end of the semi-automatic mill (53) is communicated with a feeding end of the coarse fraction screening equipment (54),
the discharge end of the coarse fraction screening device (54) comprises an upper part outlet and a lower part outlet, the upper part outlet of the coarse fraction screening device (54) is communicated with the feeding end of the stubborn stone crushing system, the lower part outlet of the coarse fraction screening device (54) is communicated with the feeding end of the slag grinding pulp pump pool (58), the discharge end of the slag grinding pulp pump pool (58) is communicated with the feeding end of the slag pulp pump (59), the discharge end of the slag pulp pump (59) is communicated with the feeding end of the fine fraction classification device (511),
the discharge end of the fine fraction classification device (511) comprises an upper outlet and a lower outlet, the upper outlet of the fine fraction classification device (511) is communicated with the flotation system (6), the lower outlet of the fine fraction classification device (511) is communicated with the feed end of the ball mill (510), the discharge end of the ball mill (510) is communicated with the feed end of the slag grinding slurry pump pool (58),
and the discharge end of the stubby stone crushing system is communicated with the feed end of the semi-autogenous mill (53).
7. The ore crushing and grinding system according to claim 6, characterized in that the stubby crushing system comprises a stubby bin (56) and a fine fraction crusher (51), the feeding end of the stubby bin (56) is communicated with the outlet of the upper part of the coarse fraction screening device (54), the discharging end of the stubby bin (56) is communicated with the feeding end of the fine fraction crusher (51), and the discharging end of the fine fraction crusher (51) is communicated with the feeding end of the semi-autogenous mill (53).
8. An ore crushing and grinding system according to claim 1, characterized in that the pre-screening system (4) comprises a washer, a cylindrical screen or a linear vibrating screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320568923.1U CN219540551U (en) | 2023-03-21 | 2023-03-21 | Ore breaking and grinding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320568923.1U CN219540551U (en) | 2023-03-21 | 2023-03-21 | Ore breaking and grinding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219540551U true CN219540551U (en) | 2023-08-18 |
Family
ID=87731189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320568923.1U Active CN219540551U (en) | 2023-03-21 | 2023-03-21 | Ore breaking and grinding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219540551U (en) |
-
2023
- 2023-03-21 CN CN202320568923.1U patent/CN219540551U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103041920B (en) | A kind of beneficiation method being suitable for chromium depleted zone and ore-sorting system | |
| CN109569837B (en) | Crushing and grinding process for treating nickel-copper sulfide ore | |
| CN110681475A (en) | Crushing production line and method for processing high-quality sandstone aggregate based on hard rock | |
| CN102921521B (en) | Ore grinding grading method for improving ore grinding processing capacity | |
| CN107362896B (en) | Production process flow and equipment of railway special-grade crushed stone ballast | |
| CN101987311B (en) | Joint grinding process of FPP mill | |
| CN104826727B (en) | Coal Multistage ore-grinding floatation process and system in a kind of particulate | |
| CN204602376U (en) | A kind of ore treatment device | |
| CN102030462A (en) | Processing method for refined quartz sand | |
| CN109046753A (en) | A kind of high mud viscosity earth's surface is red, magnetic mixing iron ore beneficiation technique | |
| CN103464275A (en) | Beneficiation method and device for quartz vein type gold deposit | |
| CN109865588A (en) | A kind of transition zone mixing iron ore beneficiation technique | |
| CN108816483A (en) | A kind of Machine-made Sand production system | |
| CN111570053A (en) | Grinding process technological method and grinding process technological equipment | |
| CN102228866B (en) | Compound classification method and equipment for ground ore product | |
| CN111298940A (en) | Pre-gangue discharge process for coking coal as selected raw material coal and screening device thereof | |
| CN214439946U (en) | Intelligent sorting device for improving lead-containing molybdenum ore selection grade | |
| CN219540551U (en) | Ore breaking and grinding system | |
| CN111686906A (en) | Efficient energy-saving crushing and grinding process for stage ore grinding | |
| CN209997765U (en) | sanitary porcelain hard material fine crushing production line | |
| CN116140025A (en) | Ore grinding system and grinding process | |
| CN210411073U (en) | High-efficient ore crushing system | |
| CN114082505B (en) | Efficient ore crushing and grinding method | |
| CN215312991U (en) | Separation and crushing system for limestone mine | |
| CN213141862U (en) | Broken screening production line of cobble |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |