CN216937163U - Iron ore semi-autogenous grinding hard stone deironing device - Google Patents
Iron ore semi-autogenous grinding hard stone deironing device Download PDFInfo
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- CN216937163U CN216937163U CN202220221453.7U CN202220221453U CN216937163U CN 216937163 U CN216937163 U CN 216937163U CN 202220221453 U CN202220221453 U CN 202220221453U CN 216937163 U CN216937163 U CN 216937163U
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Abstract
The utility model provides a semi-autogenous grinding hard stone deironing device for iron ore, which comprises a separation belt, a ray developing device, a blowing equipment starting control device and blowing equipment, wherein the separation belt is arranged on the front end of the separation belt; the sorting belt is horizontally arranged; the ray developing device comprises an X-ray source arranged above the sorting belt and an X-ray receiving device arranged below the sorting belt; the blowing equipment starting control device comprises a metal piece developing identification module connected with the X-ray receiving device, a metal piece throwing time calculation module and a metal piece throwing space position determination module which are respectively in signal connection with the metal piece developing identification module, and a switch control module respectively connected with the metal piece throwing time calculation module and the metal piece throwing space position determination module; the injection equipment is arranged at the material throwing end of the sorting belt; and a switch of the blowing equipment is connected with the switch control module. The utility model can solve the problems that the prior art can not effectively separate iron pieces from hard rocks, has complex operation, low iron removal efficiency and the like.
Description
Technical Field
The utility model relates to the technical field of iron ore smelting equipment, in particular to an iron removing device for semi-autogenous grinding of naughty stones of iron ores.
Background
China is a country with rich iron ore resources in the world, but the iron ores basically meet the smelting requirement after being crushed, ground and sorted. In the grinding process, the semi-autogenous grinding process has the advantages of short flow, high automation degree, less dust pollution, convenient management and the like, and is increasingly applied to ore dressing plants in recent years, particularly in the non-ferrous metal ore dressing practice, most large-scale ore dressing plants adopt the semi-autogenous grinding process, but in the field of iron ore dressing, particularly iron ore dressing with high magnetic iron content, because the naughty stones discharged by the semi-autogenous grinding machine have magnetism, the waste steel balls mixed in the naughty stones are removed, so far, the iron removal technology is not mature, the semi-autogenous grinding machine cannot be matched with corresponding naughty stone grinding operation, and the grinding efficiency of the semi-autogenous grinding machine is further improved, so the popularization and application of the semi-autogenous grinding process in the magnetite ore dressing plant are restricted.
Semi-autogenous mill is at the operation in-process, and semi-autogenous mill ore discharge end check hole discharges 20mm ~ 70mm hard rock, is less than 70 mm's broken steel ball simultaneously also during the check hole is discharged and is sneaked into hard rock, and these garrulous steel balls of sneaking into are very big to the breaker harm of follow-up hard rock crushing operation, probably block and cause welt and main shaft to damage in the broken chamber of breaker, and then influence semi-autogenous mill system normal operating, consequently must remove the waste steel ball clean.
At present, a scheme of a magnetic arc, a metal detector and an electromagnetic iron remover is generally adopted to remove steel scrap balls and other iron pieces, but for iron ores with magnetism, the magnetic arc, the electromagnetic iron remover and other equipment can easily suck magnetic hard rock (iron ore) while the steel scrap balls and the iron pieces are sucked, follow-up effective separation cannot be realized, the aim of removing the iron pieces in the hard rock cannot be realized, and the normal operation of a hard rock crusher cannot be ensured, so that the application and popularization of the semi-autogenous grinding process flow in the iron ores are limited.
In summary, the existing semi-autogenous grinding iron removal process for iron ore has the following defects:
1. the magnetic arc is long-term magnetic, generally adopts a permanent magnet, and has the working principle that magnetic iron ore and steel scrap balls cannot be distinguished and can be sucked out simultaneously, so that the magnetic arc cannot be used for removing iron from magnetic ore;
2. in the scheme of the metal detector and the electromagnetic iron remover, although the metal detector can find metal iron pieces in stubborn stones, the electromagnetic iron remover still cannot distinguish magnetic iron ores and broken steel balls, the iron ores and the broken steel balls are simultaneously sucked out during action and are sucked on a sucker of the iron remover, then the ores and the broken steel balls are moved out of a belt, power is cut off and the materials are discharged, an electromagnet returns to the upper part of the belt, the iron pieces are manually unloaded and are picked out, and the ores are conveyed back to the belt, so that the problems of complex operation, high manual labor intensity, low iron removal efficiency, omission and the like caused by the incapability of removing iron in the ore unloading process exist in the scheme;
3. in the iron removing process of the iron remover, because the ore and the iron piece are sucked out simultaneously, the interference of the ore on the iron piece can exist, and the iron piece is sucked out and fails;
4. although the existence of non-magnetic metal objects in the refractory stones, such as manganese steel objects, can be detected, the electromagnetic iron remover cannot suck and remove the non-magnetic metal objects.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a semi-autogenous grinding deironing device for iron ore, which solves the problems of the prior semi-autogenous grinding deironing device for iron ore that iron pieces and hard stones cannot be effectively separated, the operation is complicated, the labor intensity is high, the deironing efficiency is low, and the deironing process cannot be performed, so that the deironing process is missed.
The utility model provides a semi-autogenous grinding hard stone deironing device for iron ore, which comprises a separation belt, a ray developing device, a blowing equipment starting control device and blowing equipment, wherein the separation belt is arranged on the front end of the separation belt; wherein the content of the first and second substances,
the sorting belt is horizontally arranged, one end of the sorting belt is a feeding end, the other end of the sorting belt is a throwing end, and position coordinates are established on the sorting belt by taking the conveying direction of the sorting belt as an X axis and the width of the sorting belt as a Y axis, so that the iron ore materials on the sorting belt correspond to corresponding positions along with the conveying of the sorting belt;
the X-ray developing device comprises an X-ray source arranged above the sorting belt and an X-ray receiving device arranged below the sorting belt, and the X-ray source and the X-ray receiving device are arranged correspondingly;
the blowing equipment starting control device comprises a metal piece developing identification module connected with the X-ray receiving device, a metal piece throwing time calculation module and a metal piece throwing space position determination module which are respectively in signal connection with the metal piece developing identification module, and a switch control module respectively connected with the metal piece throwing time calculation module and the metal piece throwing space position determination module;
the blowing equipment is arranged at the material throwing end of the sorting belt and corresponds to the position coordinate; and the switch of the blowing equipment is connected with the switch control module.
In addition, the preferable scheme is that a semi-autogenous mill is arranged at the feeding end of the sorting belt;
an iron ore belt transmission device is arranged at the feeding end of the semi-autogenous mill, and an iron ore crushed aggregate belt transmission device is arranged at the discharging end of the semi-autogenous mill; the discharge end of the iron ore crushed aggregate belt conveying device is connected with the feeding end of the sorting belt.
In addition, it is preferable that a discharge end of the iron ore crushing belt conveying device is connected with a feeding end of the sorting belt through a vibratory feeder.
In addition, the preferable scheme is that a hard rock crushing device is arranged below the throwing end of the sorting belt; the obstinate stone crushing device comprises a obstinate stone belt conveying device and a crusher, wherein the obstinate stone belt conveying device is arranged below a throwing end of the sorting belt, the buffer bin is arranged below a discharge end of the obstinate stone belt conveying device, and the crusher is arranged at a discharge port below the buffer bin.
In addition, the preferable scheme is that a belt conveying device for hard and coarse hard stones is arranged at the discharge end of the crusher; the discharge end of the hard rock coarse material belt transmission device is connected with the feed end of the iron ore belt transmission device, and the discharge end of the iron ore belt transmission device is connected with the feed end of the semi-autogenous mill.
In addition, the preferable scheme is that a belt feeder is arranged at a discharge port below the buffer bin; the discharge end of the belt feeder is connected with the feed inlet of the crusher.
In addition, it is preferable that the crusher is a cone crusher.
In addition, the blowing device preferably comprises at least one row of compressed air jet holes arranged on the throwing end of the sorting belt; and each row of compressed air spray holes corresponds to the position coordinates.
In addition, the preferable scheme is that a metal object recovery container is arranged at the throwing end of the sorting belt; the inlet of the metal object recovery container corresponds to the blowing device.
According to the technical scheme, the iron ore semi-autogenous grinding hard rock deironing device provided by the utility model can accurately and reliably identify metal objects and hard rocks by using an X-ray penetrating hard rock developing technology and an image developing identification technology through a ray developing device and a metal part developing identification module; according to the position coordinates on the sorting belt and the transmission speed of the sorting belt, the metal piece throwing space position determining module and the metal piece throwing time calculating module can accurately position the throwing space position and the throwing time point of the metal piece, and the switch control module controls the opening of the blowing equipment arranged at the metal piece throwing position, so that the metal piece in the semi-autogenous grinding hard stone is accurately removed, the problem that iron ore and the iron piece cannot be distinguished by removing iron by magnetic force and the problem that non-magnetic metal pieces cannot be removed are solved, in addition, the utility model avoids the possible removal leakage risk of the iron remover during off-line iron unloading, can ensure the high-efficiency and reliable removal of the metal piece in the hard stone in the semi-autogenous grinding and hard stone crushing process flow of magnetite-containing iron ore, ensures the operation safety of the hard stone crusher, and improves the processing capacity and the ore adaptability of the semi-autogenous grinding machine, the application of the semi-autogenous grinding process flow in iron ore dressing can be effectively promoted.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic structural diagram of an iron ore semi-autogenous grinding refractory stone deironing device according to an embodiment of the utility model.
In the attached drawings, 1-a sorting belt, 11-a feeding end, 12-a throwing end, 21-an X-ray source, 22-an X-ray receiving device, 3-a blowing device starting control device, 4-a blowing device, 5-a semi-autogenous mill, 51-an iron ore belt transmission device, 52-an iron ore crushed material belt transmission device, 53-a vibration feeder, 61-a metal object, 62-enstatite, 71-an enstatite belt transmission device, 72-a buffer bin, 73-a crusher, 74-an enstatite coarse material belt transmission device, 75-a belt feeder and 8-a metal object recovery container.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
The iron ore semi-autogenous grinding and iron removing device is provided aiming at the problems that the prior iron ore semi-autogenous grinding and iron removing device can not effectively separate iron pieces from hard rocks, has complex operation, high labor intensity, low iron removing efficiency, and the like due to the incapability of removing iron in the ore unloading process.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to explain the iron ore semi-autogenous grinding hard stone deironing device provided by the utility model, fig. 1 shows the structure of the iron ore semi-autogenous grinding hard stone deironing device according to the embodiment of the utility model.
As shown in fig. 1, the iron ore semi-autogenous grinding refractory stone deironing device provided by the utility model comprises a sorting belt 1, a ray developing device, a blowing equipment starting control device 3 and a blowing equipment 4; wherein the content of the first and second substances,
the sorting belt 1 is horizontally arranged, one end of the sorting belt 1 is a feeding end 11, the other end of the sorting belt 1 is a throwing end 12, position coordinates are established on the sorting belt 1 by taking the conveying direction of the sorting belt 1 as an X axis and the width of the sorting belt 1 as a Y axis, so that iron ore materials on the sorting belt 1 correspond to corresponding positions along with the conveying of the sorting belt 1;
the X-ray developing device comprises an X-ray source 21 arranged above the sorting belt 1 and an X-ray receiving device 22 arranged below the sorting belt 1, wherein the X-ray source 21 and the X-ray receiving device 22 are arranged correspondingly;
the blowing equipment starting control device 3 comprises a metal piece developing identification module connected with the X-ray receiving device 22, a metal piece throwing time calculation module and a metal piece throwing space position determination module which are respectively in signal connection with the metal piece developing identification module, and a switch control module respectively connected with the metal piece throwing time calculation module and the metal piece throwing space position determination module;
the blowing equipment 4 is arranged at the material throwing end 12 of the sorting belt 1 and corresponds to the position coordinate; the switch of the blowing equipment 4 is connected with the switch control module.
By means of the ray developing device and the metal piece developing and identifying module, the metal object and the hard stone can be accurately and reliably identified by means of an X-ray penetrating hard stone developing technology and an image developing and identifying technology; according to the position coordinate on the sorting belt 1 and the transmission speed of the sorting belt, the metal piece throwing space position determining module and the metal piece throwing time calculating module can accurately position the throwing space position and the throwing time point of the metal piece, and the switch control module controls the opening of the blowing equipment 4 arranged at the metal piece throwing position, so that the metal piece in the semi-autogenous grinding hard rock is accurately removed, the problems that iron ore cannot be distinguished from the iron piece by magnetic force iron removal and the non-magnetic metal piece cannot be removed are solved, in addition, the utility model avoids the possible removal risk of the iron remover during offline iron unloading, in the process flow of semi-autogenous grinding and hard rock crushing of the magnetite-containing iron ore, the metal piece in the hard rock can be effectively and reliably removed, the operation safety of the hard rock crusher is ensured, and the processing capacity and the ore adaptability of the semi-autogenous grinding machine are improved, the application of the semi-autogenous grinding process flow in iron ore dressing can be effectively promoted.
As a preferable aspect of the present invention, a semi-autogenous mill 5 is provided at the feeding end 11 of the sorting belt 1; an iron ore belt transmission device 51 is arranged at the feeding end of the semi-autogenous mill 5, and an iron ore crushed aggregate belt transmission device 52 is arranged at the discharging end of the semi-autogenous mill 5; the discharge end of the iron ore crushing belt conveying device 52 is connected with the feeding end 11 of the sorting belt 1.
The iron ore is ground by the semi-autogenous mill 5, and the resulting iron ore material containing metal objects 61 (e.g., waste steel balls, manganese steel objects, and iron objects) and refractory 62 is discharged from the discharge end grid holes of the semi-autogenous mill 5.
As a preferred aspect of the present invention, the discharge end of the iron ore crushing belt conveying device 52 is connected to the feeding end 11 of the sorting belt 1 through a vibratory feeder 53.
In order to enable the iron ore materials to be spread and spread on the sorting belt 1, and facilitate subsequent position development and position determination of the metal objects 61, the iron ore materials are spread on the sorting belt 1 in a single layer by the vibratory feeder 53.
In a preferred embodiment of the present invention, a blowdown recovery device is provided at the bottom of the discharge end of the semi-autogenous mill 5. The device is used for reasonably treating the waste generated in the process of crushing the iron ore by the semi-autogenous mill 5, and preventing the waste pollution.
As a preferable scheme of the utility model, a hard rock crushing device is arranged below the throwing end 12 of the sorting belt 1; the hard rock crushing device comprises a hard rock belt conveying device 71 arranged below the material throwing end 12 of the sorting belt 1, a buffer bin 72 arranged below the discharge end of the hard rock belt conveying device 71 and a crusher 73 arranged at a discharge port below the buffer bin 72.
The size of the hard rock obtained by the semi-autogenous mill 5 may not completely meet the predetermined requirement, so that the sorted hard rock 62 needs to be further finely crushed by the crusher 73, and the speed of inputting the hard rock 62 into the crusher 73 can be controlled by the buffer bin 72, thereby playing a role of buffering the material transmission.
As a preferable scheme of the utility model, a belt conveying device 74 for hard and coarse materials is arranged at the discharge end of the crusher 73; the discharge end of the hard rock coarse material belt transmission device 74 is connected with the feed end of the iron ore belt transmission device 51, and the discharge end of the iron ore belt transmission device 51 is connected with the feed end of the semi-autogenous mill 5. And (3) possibly having metal objects 61 in the finely-crushed refractory stones, so that the finely-crushed refractory stones and the new iron ores are required to be fed into the semi-autogenous mill 5 again for crushing and grinding, and the iron removal process is repeated until the non-iron refractory stones which meet the size of the preset refractory stones are obtained.
As a preferable scheme of the present invention, a belt feeder 75 is provided at the discharge port below the surge bin 72; the discharge end of the belt feeder 75 is connected to the feed inlet of the crusher 73. The crusher 73 is fed by a belt feeder 75 so that the feeding speed is controllable in the feeding amount.
In a preferred embodiment of the present invention, the crusher 73 is a cone crusher. The cone crusher has good crushing effect.
As a preferred aspect of the present invention, the blowing device 4 includes at least one row of compressed air injection holes provided on the throwing end 12 of the sorting belt 1; each row of compressed air spray holes correspond to the position coordinates.
To ensure that the metal objects 61 at each position coordinate can be separated by blowing.
As a preferable aspect of the present invention, a metal piece recovery container 8 is provided at the throwing end 12 of the sorting belt 1; the inlet of the metal piece recovery vessel 8 corresponds to the blowing device. The metal object is further recycled.
In order to better explain the iron removing device for the semi-autogenous grinding hard stone of the iron ore, the following provides a specific embodiment.
Real time case 1
In a certain magnetite-containing iron mine, the production scale is 6000t/d, the crushing adopts an SABC semi-autogenous grinding process flow, the coarse crushing adopts 1 PE1200 multiplied by 1500 jaw crusher, the semi-autogenous grinding adopts 1 phi 7.0 multiplied by 3.5m semi-autogenous grinding machine, and the hard rock crushing adopts 2 GP100 cone crushers 1 for 1 work and 1 for alternate 24h work. The yield of the hard rock is about 25 percent generally, and the hard rock amount per hour is about 62.6 t. The ore discharge of the semi-autogenous mill is screened by a cylindrical screen which is arranged on the semi-autogenous mill, the screened material is subjected to subsequent operation, the hard stones with the size of 10mm-70mm on the screen are discharged onto 1 belt conveyor with the size of B being 650mm through a funnel, then the hard stones are fed onto 1 electromagnetic vibration feeder with the slot width of 1000mm to be scattered and spread on a sorting belt of an X-ray sorting machine with the size of B being 1000mm for identifying and sorting the metal objects, the belt speed of the sorting belt on the sorting machine is about 2m/s, the identified metal objects are blown away from the running and throwing track of the hard stones through a compressed air nozzle at the head of the sorting machine and fall into a metal collecting box, the hard stones are fed onto another belt conveyor with the size of B being 650mm through the collecting funnel to be sent to a buffer ore bin of a hard stone crushing station, and then the hard stones are fed to 1 GP machine through a belt feeder with the size of B being 800mm under the bin to be 00 for crushing cone machines (the other group of belt feeder is used as a crushing cone machine), the crushed hard rock returns to a feeding belt of the semi-autogenous mill through 1 belt conveyor with the thickness of B being 650mm and enters the semi-autogenous mill again.
According to the iron ore semi-autogenous grinding hard rock deironing device provided by the utility model, through the ray developing device and the metal piece developing and identifying module, the metal object and the hard rock can be accurately and reliably identified by utilizing the X-ray penetrating hard rock developing technology and the image developing and identifying technology; according to the position coordinates on the sorting belt and the transmission speed of the sorting belt, the metal piece throwing space position determining module and the metal piece throwing time calculating module can accurately position the throwing space position and the throwing time point of the metal piece, and the switch control module controls the opening of the blowing equipment arranged at the metal piece throwing position, so that the metal piece in the semi-autogenous grinding hard rock is accurately removed, the problems that iron ore and the iron piece cannot be distinguished by magnetic force iron removal and the non-magnetic metal piece cannot be removed are solved, in addition, the utility model avoids the possible removal leakage risk of the iron remover during offline iron unloading, in the process flow of semi-autogenous grinding and hard rock crushing containing magnetite, the metal piece in the hard rock can be effectively and reliably removed, the operation safety of the hard rock crusher is ensured, and the processing capacity and the ore adaptability of the semi-autogenous grinding machine are improved, the application of the semi-autogenous grinding process flow in iron ore dressing can be effectively promoted.
The iron ore semi-autogenous mill obstinate deironing apparatus proposed according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the apparatus for removing iron from semi-autogenous refractory ore of the present invention described above without departing from the scope of the utility model. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (9)
1. A semi-autogenous grinding hard stone deironing device for iron ore is characterized by comprising a separation belt, a ray developing device, a blowing equipment starting control device and blowing equipment; wherein the content of the first and second substances,
the sorting belt is horizontally arranged, one end of the sorting belt is a feeding end, the other end of the sorting belt is a throwing end, and position coordinates are established on the sorting belt by taking the conveying direction of the sorting belt as an X axis and the width of the sorting belt as a Y axis, so that the iron ore materials on the sorting belt correspond to corresponding positions along with the conveying of the sorting belt;
the X-ray developing device comprises an X-ray source arranged above the sorting belt and an X-ray receiving device arranged below the sorting belt, and the X-ray source and the X-ray receiving device are arranged correspondingly;
the blowing equipment starting control device comprises a metal piece developing identification module connected with the X-ray receiving device, a metal piece throwing time calculation module and a metal piece throwing space position determination module which are respectively in signal connection with the metal piece developing identification module, and a switch control module respectively connected with the metal piece throwing time calculation module and the metal piece throwing space position determination module;
the blowing equipment is arranged at the material throwing end of the sorting belt and corresponds to the position coordinate; and the switch of the blowing equipment is connected with the switch control module.
2. The iron ore semi-autogenous grinding hard stone deironing device of claim 1,
a semi-autogenous mill is arranged at the feeding end of the sorting belt;
an iron ore belt conveying device is arranged at the feeding end of the semi-autogenous mill, and an iron ore crushed aggregate belt conveying device is arranged at the discharging end of the semi-autogenous mill;
and the discharge end of the iron ore crushed aggregate belt conveying device is connected with the feeding end of the sorting belt.
3. The apparatus for removing iron from iron ore, which is semi-autogenously grindable and stubborn stones, according to claim 2,
the discharge end of the iron ore crushed aggregate belt conveying device is connected with the feeding end of the sorting belt through a vibration feeder.
4. The iron ore semi-autogenous grinding hard stone deironing device of claim 2,
a hard rock crushing device is arranged below the material throwing end of the sorting belt;
the obstinate stone crushing device comprises a obstinate stone belt conveying device and a crusher, wherein the obstinate stone belt conveying device is arranged below a throwing end of the sorting belt, the buffer bin is arranged below a discharge end of the obstinate stone belt conveying device, and the crusher is arranged at a discharge port below the buffer bin.
5. The iron ore semi-autogenous grinding hard stone deironing device of claim 4, characterized in that,
a discharging end of the crusher is provided with a hard stone coarse material belt transmission device;
the discharge end of the hard rock coarse material belt transmission device is connected with the feed end of the iron ore belt transmission device, and the discharge end of the iron ore belt transmission device is connected with the feed end of the semi-autogenous mill.
6. The iron ore semi-autogenous grinding hard stone deironing device of claim 4, characterized in that,
a belt feeder is arranged at a discharge port below the buffer bin;
the discharge end of the belt feeder is connected with the feed inlet of the crusher.
7. The iron ore semi-autogenous grinding hard stone deironing device of claim 4, characterized in that,
the crusher is a cone crusher.
8. The iron ore semi-autogenous grinding hard stone deironing device of claim 1,
the blowing equipment comprises at least one row of compressed air jet holes arranged at the material throwing end of the sorting belt; each row of compressed air spray holes corresponds to the position coordinates.
9. The iron ore semi-autogenous grinding hard stone deironing device of claim 1,
a metal object recovery container is arranged at the throwing end of the sorting belt;
the inlet of the metal object recovery container corresponds to the blowing device.
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| CN202220221453.7U CN216937163U (en) | 2022-01-26 | 2022-01-26 | Iron ore semi-autogenous grinding hard stone deironing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618791A (en) * | 2022-01-26 | 2022-06-14 | 中国恩菲工程技术有限公司 | Iron removing method and device for iron ore semi-autogenous grinding hard stone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618791A (en) * | 2022-01-26 | 2022-06-14 | 中国恩菲工程技术有限公司 | Iron removing method and device for iron ore semi-autogenous grinding hard stone |
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