CN204602376U - A kind of ore treatment device - Google Patents

Abstract

The utility model provides a kind of ore treatment device, belong to crushing mechanism device field, comprise boulder crusher, intermediate crusher, fine crusher, superfine crusher and dry-dressing machine, described boulder crusher is gyratory crusher, described intermediate crusher is gyratory crusher, described fine crusher is impact crusher, and described superfine crusher is high-pressure roller mill; Described gyratory crusher, described gyratory crusher, described impact crusher, described high-pressure roller mill and described dry-dressing machine are linked in sequence successively.Prior art can only carry out lump ore and lump ore throwing for the magnetic iron ore that grade is higher is given up, a large amount of gangue minerals then can not be made fully to throw low-ore grade magnetic iron ore to remove, be difficult to reach the object significantly reducing production cost, the technical program then can be dished out effectively, reduces production cost.

Description

A kind of ore processing device

technical field

The utility model relates to the field of crushing mechanical devices, in particular to an ore processing device.

Background technique

At present, in view of the ultra-low grade of the selected ore, the processing capacity of raw ore should be scaled up, the technological process should be simplified, and the tailings should be discarded as early as possible. In the process of iron concentrate powder, reducing the treatment of gangue minerals containing no iron or very low iron is the key to reducing production costs. To reduce the treatment of priceless waste rocks, it is necessary to remove them from the ore in advance Middle throwing and pre-tailing treatment of ore are the most important ways to achieve the above-mentioned reduction in production costs. For many years, people have adopted the "more crushing and less grinding" process to reduce the ore entering the grinding process. Particle size can be used to reduce production costs, and the "pre-discarding" method of medium crushing or even fine crushing before entering the mill can also be used to reduce production costs and achieve certain economic benefits. However, the discarding of lump ore and large ore is mainly aimed at higher-grade magnetite ore, and the surrounding rock gangue entrained in the mining process is removed. For low-grade magnetite ore, the discarding of massive ore cannot make a large amount of The gangue minerals are fully removed, and the useful minerals are also removed at the same time, so it is difficult to achieve the purpose of greatly reducing production costs.

Utility model content

The purpose of this utility model is to provide an ore processing device to improve the above problems.

The utility model is achieved in that:

An ore processing device, comprising a coarse crusher, a secondary crusher, a fine crusher, an ultrafine crusher and a dry separator, the coarse crusher is a gyratory crusher, the secondary crusher is a cone crusher, and the fine crusher It is an impact crusher, and the ultrafine crusher is a high-pressure roller mill; the gyratory crusher, the cone crusher, the impact crusher, the high-pressure roller mill and the dry separator are in sequence connect.

At present, in view of the ultra-low grade of the selected ore, reducing the treatment of gangue minerals containing no iron or very low iron is the key to reducing production costs. In order to reduce the treatment of priceless waste rocks, it is necessary to pre Remove it from the ore, and fully crush the ore to ensure that the useful minerals will not be removed when a large number of gangue minerals are fully removed. After the first step, full crushing has been achieved. At this time, dry separation can be carried out to fully remove useless waste rocks, which not only has high efficiency and good effect, but also indirectly reduces production costs. The actual operation process of the utility model is as follows: the ore enters the gyratory crusher, cone crusher, impact crusher, and high-pressure roller mill for crushing, and finally enters the dry separator for dry separation. The ore can be transported through The transmission belt can also use an inclined channel, and it can also be manually carried.

Jaw crushers are generally used for coarse crushing, and jaw crushers are also the strongest. However, compared with jaw crushers, gyratory crushers have the advantage that the crushing process of gyratory crushers is continuous along the circular crushing cavity. It can be seen from the particle size distribution curve of the finished product. In the particle size composition of the finished product, the particle size of the material exceeding the width of the discharge port is smaller than that of the jaw crusher, the quantity is also small, and the particle size is relatively uniform; In addition, raw materials can be directly poured into the feed port from the transportation tool without setting up a feeder; at the same time, when selecting a jaw crusher to meet the production requirements, use the jaw crusher, and if two jaw crushers are required, then Consideration should be given to selecting a gyratory crusher, so the gyratory crusher is stronger and will be more effective for primary crushing of ore.

The reasons why the cone crusher is used for medium crushing are: the cone crusher has a large crushing ratio, high efficiency, low energy consumption, uniform product particle size, and is suitable for medium crushing of various ores and rocks; reasonable structure, advanced crushing principle and technical parameters, reliable operation, Low operating cost; all parts of the crusher have wear protection, which reduces the maintenance cost to a minimum, and the general service life can be increased by more than 30%. The unique design of the thin oil lubrication system also greatly improves the service life of the equipment; In the case of iron passing and instantaneous stuffy car, it can hydraulically lift the top and automatically discharge materials, which greatly reduces the annoyance that the original spring cone crusher needs to be stopped for manual discharge.

The impact crusher is a kind of high-energy and low-consumption impact crusher with international advanced level. Its performance plays an irreplaceable role in various ore fine crushing equipment. It is currently the most effective, practical and reliable stone crushing machine; The wearing parts are made of extra-hard and wear-resistant materials, which are small in size and light in weight, making it easy to replace accessories.

The ultra-fine crushing equipment is selected as high-pressure roller mill equipment, which has mature technology, high crushing efficiency, large single-machine output, high powder ore content, small product particle size, and low unit energy consumption, especially in terms of energy saving in the entire mineral processing process. equipment is more advantageous. (1) High crushing efficiency and low energy consumption: High-pressure roller mills use the working principle of lamination crushing. Lamination crushing is a kind of high-efficiency compressive stress crushing, which is more efficient than ball mills using compressive stress and shear stress. In other words, the crushing efficiency is high and the energy consumption is low; the coarse particle product of the high pressure roller mill will also produce a large number of stress cracks, which is easier to grind and is more beneficial to the grinding process, which can increase the grinding capacity by about 20% and save grinding The power consumption of the mining system, a large number of fine particles are generated during the crushing process of the high-pressure roller mill, and the crushed products have a high content of fine particles. Most of the materials are broken along the cleavage plane, and most of them have been initially dissociated. Possibly, in order to achieve the purpose of early throwing of waste rocks and early harvest of ore; (2) Realize more crushing and less grinding, and reduce grinding energy consumption: during the working process of the high-pressure roller mill, the inside of the material particles and the contact surface of the material form a concentration Stress, material particles separate along the cleavage plane or form microcracks, which is conducive to the formation of useful mineral monomers at a coarser grinding fineness, thereby reducing the grinding workload, reducing the grinding fineness, and reducing the damage caused by over-grinding. Metal loss, improved sorting index and filtration efficiency; the ore processed by high-pressure roller mill has more cracks, the grinding efficiency is improved, the consumption of auxiliary materials such as steel balls and liners is reduced, and the ore particles produced by fine crushing operations are smaller , The more fine ore content, the lower the power consumption of the next step of grinding, the higher the grinding efficiency, and the greater the processing capacity. According to the Baiquan Iron Mine project test and related practical data, the ore particle size before grinding is changed from 15mm If it is reduced to 8mm and the product particle size remains unchanged, the efficiency of the mill can be increased by about 18.91%, so that the total amount of equipment is reduced, the workshop volume, floor area, production and maintenance costs are correspondingly reduced, the cost of mineral processing is reduced, and energy saving is achieved. The purpose of increasing consumption, increasing production and increasing efficiency.

To sum up, the coarse crushing adopts the gyratory crusher, the medium crushing adopts the cone crusher, the fine crushing adopts the impact crusher, and the ultra-fine crushing adopts the high pressure roller mill is the optimal way.

Further, a secondary crushing buffer bin is set between the gyratory crusher and the cone crusher.

The crushing speed of the gyratory crusher and the cone crusher are different. In the process of continuous operation, in order not to interrupt the crushing, ensure the working efficiency and reduce the production cost, a buffer bin for intermediate crushing is set between the gyratory crusher and the cone crusher. It is used to place the ore piled up due to the difference in the crushing speed of the crusher and to input an appropriate amount of material into the cone crusher as required.

Further, a heavy-duty belt feeder is set between the gyratory crusher and the intermediate crushing buffer bin.

The belt feeding machine realizes the improvement of speed regulation. The user can adjust the speed through the governor knob according to the needs, so as to realize the control of ore quantity. It has the characteristics of low power consumption, uniform feeding, convenient operation and accurate control. At the same time, it adopts The heavy-duty belt feeder is to meet the crushing of a large number of ores and improve work efficiency.

Further, a finely crushed ore receiving bin is arranged between the cone crusher and the impact crusher.

The fine crushing bin is to ensure the continuity of the crushing process, so that the crushing speed between the cone crusher and the impact crusher does not need to be synchronized; at the same time, it can feed materials according to the load of the impact crusher, reducing each crushing load and prolong the service life of the impact crusher.

Further, an ultra-fine crushing buffer bin and a constant-flow constant-weight bin are arranged between the impact crusher and the high-pressure roller mill, and the ultra-fine-crushing buffer bin is connected to the steady-flow constant-weight bin.

The fine crushing buffer bin is used to place the ore accumulated due to the different crushing speeds of the front and rear crushers. The steady flow and constant weight bin ensures that the ore flowing through the bin is always dynamically maintained in a relatively constant range, effectively ensuring that the high pressure roller mill enters the The pressure of the feed port reduces the vibration impact caused by uneven feeding, reduces the peak load, improves the crushing effect, makes the high pressure roller mill run more smoothly, crushes more fully, and has a higher yield, thereby improving the operating rate of the equipment.

Further, a screening and distribution bin and a vibrating screen are arranged between the high-pressure roller mill and the dry separator, and the vibrating screen is provided with an outlet for products on the sieve and an outlet for products under the sieve; the sieving distribution The inlet end of the ore bin is connected to the high-pressure roller mill, the outlet end of the screening and distribution bin is connected to the inlet end of the vibrating screen; the outlet of the over-sieve product is connected to the ultrafine crushing buffer ore bin, The underscreen product outlet is connected with the dry separator.

The ore crushed by the high-pressure roller mill enters the vibrating screen after being screened and distributed in the ore bin. The vibrating screen performs dry separation on the crushed ore. The unconditioned ore returns to the ultra-fine crushing buffer ore bin again, and then enters the high-pressure roller mill for crushing. Such a cycle structure is to ensure that the ore particles entering the dry separator meet the standards set by the vibrating screen and can be effectively dried. Select the required ore, which is the last check procedure.

Further, the vibrating screen is a heavy-duty double-layer circular vibrating screen.

The advantages of using double-layer circular vibrating screens are: the circular vibrating screen vibrates in a circular motion, the amplitude can be adjusted, the specifications of each gear are clearly screened, and the screening efficiency is high, which is suitable for screening in mining and sandstone industries; It is a high-precision fine powder screening equipment with low noise and high efficiency. It only takes 3-5 minutes to change the screen quickly. The ore is divided into two parts, so a double-layer vibrating screen is used.

Further, the dry separation machine is a suspension type dry separation machine.

Suspension-type dry separator has a good effect of tailing pre-selection, which can maximize the grade of ore. The dry separation of the crushing system adopts a suspension dry separation machine, which has a large processing capacity and a good powder ore separation effect. When the particle size is 15-0mm, the average waste rejection is about 18.91%. The ore and gangue crushed by the high-pressure roller mill have been partially dissociated, which can be thrown before grinding, and the selectivity of the ore can be improved. After the ultra-lean ore is finely crushed to 8mm, the tailing rate can reach 20-25%. Dry separation and tailings before entering the grinding, throwing out the qualified tailings in advance, so that the amount of ore entering the grinding is reduced, thereby reducing the energy consumption of the grinding.

The grinding capacity of the mill in the concentrator is the bottleneck that limits the processing capacity of the concentrator. Throwing away a large amount of qualified tailings before grinding is equivalent to increasing the effective processing capacity of the mill. It also greatly increased.

Before grinding, a large amount of mud-containing minerals that affect the grinding efficiency and screening efficiency are removed, and at the same time, a large amount of gangue minerals such as quartz and feldspar are removed to improve the grinding efficiency and classification efficiency. The final concentrate grade has been improved, and the increase of the concentrate grade is achieved without reducing the grinding capacity of the mill, without reducing the grinding particle size, without changing the process, and without increasing the separation process, which directly affects The economic benefits of the dressing plant.

Further, it also includes a waste rock bin and a fine ore bin, the dry separator is provided with a waste rock outlet and a fine ore outlet, the waste rock outlet is connected to the waste rock bin, and the fine ore outlet is connected to the fine ore outlet. Mine connection.

The purpose of ore crushing and dry selection is to obtain higher-grade ore. At this time, the dry selection of the dry separation machine will dry-separate the priceless waste rock and useful ore, and the dry-selected priceless waste rock will pass through the waste. The ore is exported into the waste rock bin, and the useful ore is stored in the fine ore bin through the powder ore outlet.

Further, the gyratory crusher, the cone crusher, the impact crusher and the high-pressure roller mill are all connected by a belt conveyor.

The belt conveyor is the conveying medium, which is used to connect the four processes of coarse crushing, medium crushing, fine crushing, and superfine crushing, and transport the ore to the crusher for crushing in turn; through the belt conveyor, the conveying speed can be adjusted and controlled according to the load of the crusher , prolong the service life of the whole device.

Beneficial effects of the utility model: by dry-separating the ore after coarse crushing, medium crushing, fine crushing, and superfine crushing, and following the principle of "more crushing and less grinding", the utility model can carry out low-grade ore processing for low-grade ores. The cost-effective dry selection can not only fully remove useless waste rocks, but also has high efficiency and good effect, and also reduces production costs.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the overall structure schematic diagram of the ore processing device that the utility model embodiment provides;

Fig. 2 is an overall flow chart of the ore processing device provided by the embodiment of the present invention.

In the picture:

Gyratory crusher 101; cone crusher 102; impact crusher 103; high pressure roller mill 104; medium crushing buffer bin 105; heavy belt feeder 106; Flow constant weight warehouse 109; Screening and distribution ore bin 200; On-screen product outlet 201; Under-screen product outlet 202; Suspension dry separator 203; Waste rock outlet 204; Powder ore outlet 205; Conveyor 207; powder ore bin 208; waste rock bin 209.

Detailed ways

For many years, people have reduced the production cost of iron-containing ores by adopting the process of "more crushing and less grinding" to reduce the particle size of the ore entering the mill, and also by adopting the "pre-discarding" method of crushing or even coarse crushing before entering the mill. " way, to reduce production costs, and achieved certain economic benefits. However, the discarding of lump ore and large ore is mainly aimed at higher-grade magnetite ore, and the surrounding rock gangue entrained in the mining process is removed. For low-grade magnetite ore, the discarding of massive ore cannot make a large amount of The gangue minerals are fully removed, and the useful minerals are also removed at the same time, so it is difficult to achieve the purpose of greatly reducing production costs.

In view of the above problems, the utility model provides a kind of ore processing device, through the four steps of coarse crushing, medium crushing, fine crushing and superfine crushing and then dry separation of ore, it can dry select ore with lower grade, improve the above problems.

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

It should be noted that the "connection" in this technical solution means that the output port of the previous equipment reaches the input port of the next equipment through the conveying device, such as gyratory crushers, cone crushers, impact crushers, high-pressure rollers, etc. The sequential connection of the mill and the dry separator means that the material goes from the discharge port of the gyratory crusher to the feed port of the cone crusher through the conveying device, and from the discharge port of the cone crusher to the feed port of the impact crusher through the conveying device. The feed port, and then from the discharge port of the impact crusher to the feed port of the high-pressure roller mill through the conveying device, and finally enter the dry separator through the conveying device, and the other materials are conveyed in the same way. The connection here can use conveyor belts, inclined channels or manual handling.

Embodiment 1, with reference to Fig. 1 to Fig. 2.

An ore processing device, comprising a coarse crusher, a secondary crusher, a fine crusher, an ultrafine crusher and a dry separator, the coarse crusher is a gyratory crusher 101, the secondary crusher is a cone crusher 102, and the fine crusher is an impact crusher machine 103, the superfine crusher is a high-pressure roller mill 104; the gyratory crusher 101, the cone crusher 102, the impact crusher 103, the high-pressure roller mill 104 and the dry separator are sequentially connected.

At present, in view of the ultra-low grade of the selected ore, reducing the treatment of gangue minerals containing no iron or very low iron is the key to reducing production costs. In order to reduce the treatment of priceless waste rocks, it is necessary to pre Remove it from the ore, and fully crush the ore to ensure that the useful minerals will not be removed when a large number of gangue minerals are fully removed. After the first step, full crushing has been achieved. At this time, dry separation can be carried out to fully remove useless waste rocks, which not only has high efficiency and good effect, but also indirectly reduces production costs. The actual operation process of the utility model is as follows: the ore enters the gyratory crusher 101, the cone crusher 102, the impact crusher 103, and the high-pressure roller mill 104 for crushing, and finally enters the dry separator for dry separation. The conveying can be through the belt, can also use the inclined channel, and can also be manually carried.

Jaw crushers are generally used for primary crushing, and jaw crushers are also the strongest. However, compared with jaw crushers, the gyratory crusher 101 has the advantage that the crushing process of the gyratory crusher 101 is along the circular crushing chamber. It is carried out continuously inside, so the productivity is high, the power consumption is low, and the work is stable; it can be seen from the particle size distribution curve of the finished product. In the particle size composition of the finished product, the particle size of the material exceeding the width of the discharge port is smaller than that of the jaw crusher, and the quantity is also small, and the particle size is relatively small. In addition, raw materials can be directly poured into the feed port from the transportation tool without setting up a feeder; at the same time, when selecting a model, if one jaw crusher can meet the production requirements, use the jaw crusher, if you need two jaw crushers , you should consider choosing a gyratory crusher 101, so the gyratory crusher 101 is stronger, and it will be more effective for primary crushing of ore.

The reasons for adopting the cone crusher 102 for medium crushing are: the cone crusher 102 has a large crushing ratio, high efficiency, low energy consumption, uniform product size, and is suitable for medium crushing of various ores and rocks; reasonable structure, advanced crushing principle and technical parameters, and easy operation. Reliable, low operating cost; all parts of the crusher are protected against wear, which reduces maintenance costs to a minimum, and the general service life can be increased by more than 30%. The unique thin oil lubrication system design also greatly improves the service life of the equipment; In the event of iron passing and instantaneous stuffy traffic, the machine can hydraulically lift the top and automatically discharge materials, which greatly reduces the annoyance that the original spring cone crusher 102 needs to be stopped for manual discharge.

Impact Crusher 103 is a high-energy and low-consumption impact crusher with international advanced level. Its performance plays an irreplaceable role in various ore fine crushing equipment. It is currently the most effective, practical and reliable stone crushing machine; The wearable parts are made of extra-hard and wear-resistant materials, which are small in size and light in weight, making it easy to replace parts.

The ultra-fine crushing equipment is selected as high-pressure roller mill equipment, which has mature technology, high crushing efficiency, large single-machine output, high powder ore content, small product particle size, and low unit energy consumption, especially in terms of energy saving in the entire mineral processing process. equipment is more advantageous. (1) High crushing efficiency and low energy consumption: High-pressure roller mills use the working principle of lamination crushing. Lamination crushing is a kind of high-efficiency compressive stress crushing, which is more efficient than ball mills using compressive stress and shear stress. In other words, the crushing efficiency is high and the energy consumption is low; the coarse particle product of the high pressure roller mill will also produce a large number of stress cracks, which is easier to grind and is more beneficial to the grinding process, which can increase the grinding capacity by about 20% and save grinding The power consumption of the mining system, a large number of fine particles are generated during the crushing process of the high-pressure roller mill, and the crushed products have a high content of fine particles. Most of the materials are broken along the cleavage plane, and most of them have been initially dissociated. Possibly, in order to achieve the purpose of early throwing of waste rocks and early harvest of ore; (2) Realize more crushing and less grinding, and reduce grinding energy consumption: during the working process of the high-pressure roller mill, the inside of the material particles and the contact surface of the material form a concentration Stress, material particles separate along the cleavage plane or form microcracks, which is conducive to the formation of useful mineral monomers at a coarser grinding fineness, thereby reducing the grinding workload, reducing the grinding fineness, and reducing the damage caused by over-grinding. Metal loss, improved sorting index and filtration efficiency; the ore processed by high-pressure roller mill has more cracks, the grinding efficiency is improved, the consumption of auxiliary materials such as steel balls and liners is reduced, and the ore particles produced by fine crushing operations are smaller , The more fine ore content, the lower the power consumption of the next step of grinding, the higher the grinding efficiency, and the greater the processing capacity. According to the Baiquan Iron Mine project test and related practical data, the ore particle size before grinding is changed from 15mm If it is reduced to 8mm and the product particle size remains unchanged, the efficiency of the mill can be increased by about 18.91%, so that the total amount of equipment is reduced, the workshop volume, floor area, production and maintenance costs are correspondingly reduced, the cost of mineral processing is reduced, and energy saving is achieved. The purpose of increasing consumption, increasing production and increasing efficiency.

In summary, the gyratory crusher 101 is used for coarse crushing, the cone crusher 102 is used for medium crushing, the impact crusher 103 is used for fine crushing, and the high-pressure roller mill 104 is used for ultrafine crushing.

In this embodiment, the gyratory crusher 101 , the cone crusher 102 , the impact crusher 103 and the high pressure roller mill 104 are all connected by a belt conveyor 207 .

The belt conveyor 207 is the conveying medium, which is used to connect the four processes of coarse crushing, medium crushing, fine crushing and superfine crushing, and transport the ore to the crusher for crushing in sequence; the belt conveyor 207 can adjust and control the conveying according to the load of the crusher speed, prolonging the service life of the entire device.

As a further optimization of this embodiment, the dry separation machine is a suspension type dry separation machine 203 .

Suspension-type dry separator 203 has a good effect of tailing pre-selection, which can improve the grade of ore to the greatest extent. The dry separation of the crushing system adopts a suspension dry separation machine, which has a large processing capacity and a good powder ore separation effect. When the particle size is 15-0mm, the average waste rejection is about 18.91%. The ore and gangue crushed by the high-pressure roller mill have been partially dissociated, which can be thrown before grinding, and the selectivity of the ore can be improved. After the ultra-lean ore is finely crushed to 8mm, the tailing rate can reach 20-25%. Dry separation and tailings before entering the grinding, throwing out the qualified tailings in advance, so that the amount of ore entering the grinding is reduced, thereby reducing the energy consumption of the grinding.

The grinding capacity of the mill in the concentrator is the bottleneck that limits the processing capacity of the concentrator. Throwing away a large amount of qualified tailings before grinding is equivalent to increasing the effective processing capacity of the mill. It also greatly increased.

Before grinding, a large amount of mud-containing minerals that affect the grinding efficiency and screening efficiency are removed, and at the same time, a large amount of gangue minerals such as quartz and feldspar are removed to improve the grinding efficiency and classification efficiency. The final concentrate grade has been improved, and the increase of the concentrate grade is achieved without reducing the grinding capacity of the mill, without reducing the grinding particle size, without changing the process, and without increasing the separation process, which directly affects The economic benefits of the dressing plant.

In order to ensure the continuity of crushing, a secondary crushing buffer bin 105 is provided between the gyratory crusher 101 and the cone crusher 102 .

The crushing speed of the gyratory crusher 101 and the cone crusher 102 are different. In the process of continuous operation, in order not to interrupt the crushing, ensure the working efficiency and reduce the production cost, an intermediate crushing device is set between the gyratory crusher 101 and the cone crusher 102. The buffer bin 105 is used to place the ore piled up due to the difference in the crushing speed of the crusher, and input an appropriate amount of material into the cone crusher and input an appropriate amount of material into the cone crusher 102 as required.

A heavy-duty belt feeder 106 is arranged between the gyratory crusher 101 and the intermediate crushing buffer bin 105 .

The belt feeding machine realizes the improvement of speed regulation. The user can adjust the speed through the governor knob according to the needs, so as to realize the control of ore quantity. It has the characteristics of low power consumption, uniform feeding, convenient operation and accurate control. At the same time, it adopts Heavy-duty belt feeder 106 is to meet the crushing of a large number of ores and improve work efficiency.

Between the cone crusher 102 and the impact crusher 103, there is a finely crushed ore receiving bin 107.

The fine crushing bin 107 is to ensure the continuity of the crushing process, so that the crushing speed between the cone crusher 102 and the impact crusher 103 does not need to be synchronized; at the same time, it can feed materials according to the load of the impact crusher 103, reducing the Each crushing load prolongs the service life of the impact crusher 103 .

In this embodiment, between the impact crusher 103 and the high-pressure roller mill 104, an ultra-fine crushing buffer bin 108 and a steady-flow constant-weight bin 109 are arranged, and the ultra-fine-crushing buffer bin 108 and the steady-flow constant-weight bin 109 are connected.

The fine crushing buffer ore bin is used to accommodate the ore accumulated due to the different crushing speeds of the front and rear crushers. The steady flow and constant weight bin 109 ensures that the ore flowing through the bin is always dynamically maintained in a relatively constant range, effectively ensuring the high pressure roller mill. The pressure at the feed port of 104 reduces the vibration impact caused by uneven feeding, reduces the peak load, improves the crushing effect, makes the high pressure roller mill 104 run more smoothly, crushes more fully, and has a higher yield, thereby improving the operating rate of the equipment .

In order to fully crush, a screening and distribution bin 200 and a vibrating screen are arranged between the high pressure roller mill 104 and the dry separator, and the vibrating screen is provided with an outlet 201 for products on the screen and an outlet 202 for products under the screen; The inlet port of the screen is connected to the high-pressure roller mill 104, the outlet port of the screening distribution bin 200 is connected to the inlet port of the vibrating screen; the product outlet 201 on the screen is connected to the superfine crushing buffer bin 108, and the outlet 202 of the product under the screen is connected to the dry separation machine connection.

The ore crushed by the high-pressure roller mill 104 enters the vibrating screen after passing through the screening and distributing bin 200. The ore that meets the conditions is returned to the ultra-fine crushing buffer bin 108, and then enters the high-pressure roller mill 104 for crushing. Such a cycle structure is to ensure that the ore particles entering the dry separator meet the standards set by the vibrating screen and can be crushed. Effective dry selection of the required ore is the last check procedure.

As a preferred solution of this embodiment, the vibrating screen is a heavy-duty double-layer circular vibrating screen 206 .

The advantages of using heavy-duty double-layer circular vibrating screen 206 are: the circular vibrating screen vibrates in a circular motion, the amplitude can be adjusted, the specifications of each gear are clearly screened, and the screening efficiency is high. It is suitable for screening in mining and sand and gravel industries; The vibrating screen is a high-precision fine powder screening equipment with low noise and high efficiency. It only takes 3-5 minutes to change the screen quickly. The ore needs to be divided into two parts, so a double-layer vibrating screen is used.

In order to recycle the waste rock well, it also includes a waste rock bin 209 and a fine ore bin 208. The dry separator is provided with a waste rock outlet 204 and a fine ore outlet 205. The waste rock outlet 204 is connected with the waste rock bin 209, and the fine ore outlet 205 is connected with fine ore bin 208.

The purpose of ore crushing and dry separation is to obtain high-grade ore. At this time, the dry separation of the dry separation machine will dry select the priceless waste rock and useful ore, and the dry selected waste rock will be exported through the waste rock. 204 enters the waste rock bin 209, and the useful ore enters the fine ore bin 208 through the fine ore outlet 205 for storage.

Beneficial effects of the utility model: by dry-separating the ore after coarse crushing, medium crushing, fine crushing, and superfine crushing, and following the principle of "more crushing and less grinding", the utility model can carry out low-grade ore processing for low-grade ores. The cost-effective dry selection can not only fully remove useless waste rocks, but also has high efficiency and good effect, and also reduces production costs.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. an ore treatment device, is characterized in that, comprises boulder crusher, intermediate crusher, fine crusher, superfine crusher and dry-dressing machine, described boulder crusher is gyratory crusher, described intermediate crusher is gyratory crusher, and described fine crusher is impact crusher, and described superfine crusher is high-pressure roller mill; Described gyratory crusher, described gyratory crusher, described impact crusher, described high-pressure roller mill and described dry-dressing machine are linked in sequence successively.

2. ore treatment device according to claim 1, is characterized in that, broken product storage bin in being provided with between described gyratory crusher and described gyratory crusher.

3. ore treatment device according to claim 2, is characterized in that, described gyratory crusher and described in be provided with heavy belt ore feeder between broken product storage bin.

4. ore treatment device according to claim 1, is characterized in that, is provided with in small, broken bits by ore storage bin between described gyratory crusher and described impact crusher.

5. ore treatment device according to claim 1, is characterized in that, is provided with ultrafine grinding product storage bin and steady-flow constant-weight storehouse between described impact crusher and described high-pressure roller mill, and described ultrafine grinding product storage bin is connected with described steady-flow constant-weight storehouse.

6. ore treatment device according to claim 5, is characterized in that, is provided with to sieve to distribute ore storage bin and vibratory sieve between described high-pressure roller mill and described dry-dressing machine, and described vibratory sieve is provided with oversize outlet and undersize outlet; The arrival end that described screening distributes ore storage bin is connected with described high-pressure roller mill, and the port of export that described screening distributes ore storage bin is connected with the arrival end of described vibratory sieve; Described oversize outlet is connected with described ultrafine grinding product storage bin, and described undersize outlet is connected with described dry-dressing machine.

7. ore treatment device according to claim 6, is characterized in that, described vibratory sieve is heavy Double-layer circular vibration screen.

8. ore treatment device as claimed in any of claims 1 to 7, is characterized in that, described dry-dressing machine is floated dry-dressing machine.

9. ore treatment device as claimed in any of claims 1 to 7, it is characterized in that, also comprise refuse bin and fine ore bin, described dry-dressing machine is provided with barren rock outlet and fine ore outlet, described barren rock outlet is connected with described refuse bin, and described fine ore outlet is connected with described fine ore bin.

10. ore treatment device as claimed in any of claims 1 to 7, is characterized in that, described gyratory crusher, described gyratory crusher, is all connected by belt conveyor between described impact crusher and described high-pressure roller mill.