CN113787019A - Method for sorting mine by using X-ray - Google Patents
Method for sorting mine by using X-ray Download PDFInfo
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- CN113787019A CN113787019A CN202110852282.8A CN202110852282A CN113787019A CN 113787019 A CN113787019 A CN 113787019A CN 202110852282 A CN202110852282 A CN 202110852282A CN 113787019 A CN113787019 A CN 113787019A
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- ore
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 102
- 239000011707 mineral Substances 0.000 claims abstract description 102
- 239000012141 concentrate Substances 0.000 claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 55
- 239000012535 impurity Substances 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 46
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims description 56
- 239000002245 particle Substances 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000005251 gamma ray Effects 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000012216 screening Methods 0.000 abstract description 22
- 238000005516 engineering process Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 middlings Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/16—Sorting according to weight
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a method for sorting mines by utilizing X-rays. The method comprises the following steps: providing mineral aggregates for sorting by using a material conveying device; step two, roughing the mineral aggregate to screen concentrate, middlings, gangue and metal ores in the mineral aggregate, and separating the gangue to obtain concentrate, middlings containing impurities and metal ores; step three, the mineral aggregate obtained in the step two is selected, so that the concentrate, the middlings containing impurities and the metal ores in the mineral aggregate are separated; and step four, purifying and sorting the concentrate obtained in the step three to obtain the concentrate. According to the X-ray sensing-based ore separation method, the ore materials are subjected to multi-stage separation so as to be classified and fully utilized, the ore materials are subjected to fine screening and fine screening aiming at the primarily screened ore materials, so that the ore materials with different quality levels are obtained, and the high-quality ore materials obtained through fine screening meet the requirements of high-quality industrial ore.
Description
Technical Field
The invention belongs to the technical field of mine sorting, and particularly relates to a method for sorting mines by utilizing X-rays.
Background
A mineral is a combustible black or brownish black sedimentary rock, such sedimentary rock usually occurring in rock formations or veins known as deposits or layers. The harder form of the ore may be considered metamorphic rock, such as smokeless ore, because of subsequent exposure to elevated temperatures and pressures. Most of the tobacco and smokeless ores are obtained by deep mining, and the recent technology has been the open-pit mining. Open-cast mining requires the use of large excavators that can remove hundreds of metric tons per hour to remove hundreds of feet of surface earth. Although lower cost and faster excavation speed, it can destroy the environmental landscape. Typically, the depth of a deep-mining method is from several hundred feet to several thousand feet, and several vertical wells are usually required to ventilate the mine, pump away methane and reduce the heat and humidity inside the mine pit. More than about 90% of the fields are mined and conveyed mechanically, so that the mines are conveyed to the vertical shaft by the conveying belt mainly for transportation in the gallery, and then the mines are conveyed out of the ground for cleaning, classification and other treatment.
The quality of the ore determines its efficiency of use and economic value. Mineral in its natural state exists in a variety of forms, often in combination with some impurities that affect the quality of the mineral. In order to remove these impurities from the ore to improve quality, wet and dry beneficiation techniques are often employed.
The wet beneficiation technology needs to use a large amount of water, the cost is high, the environment is seriously affected, and the water increases the humidity of the ore and influences the heat value efficiency of the ore, so the wet beneficiation technology is gradually replaced by the dry beneficiation technology.
However, the existing dry beneficiation technologies only have relatively simple 1-2 screening processes, and the screening means is relatively common, and most of the existing dry beneficiation technologies are technologies for primarily screening ores, so that the requirements of preparing concentrate by high-precision screening cannot be met, and the purposes of preparing ores with different quality levels by multi-level screening and fully recovering useful minerals cannot be achieved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the ore separation method based on the X-ray sensing, which has the characteristics of high screening accuracy, good separation effect, simple process, low operation cost and the like, can provide concentrate with high purity and good quality for users, and can reasonably separate middlings, impurities and metal ores.
In order to achieve the purpose, the specific technical scheme of the ore separation method based on the X-ray sensing is as follows:
a method for sorting mines by utilizing X-rays. The method comprises the following steps: providing mineral aggregates for sorting by using a material conveying device; step two, roughing the mineral aggregate to screen concentrate, middlings, gangue and metal ores in the mineral aggregate, and separating the gangue to obtain concentrate, middlings containing impurities and metal ores; step three, the mineral aggregate obtained in the step two is selected, so that the concentrate, the middlings containing impurities and the metal ores in the mineral aggregate are separated; step four, purifying and sorting the concentrate obtained in the step three to obtain concentrate; in the third step, the middlings containing impurities and the metal ores containing impurities are sorted by using the X-ray generator, the X-ray detector group, the executing mechanism and the electronic control unit to obtain the concentrates.
Further, in the third step, the X-ray generator generates X-rays to penetrate through the mineral aggregate, the X-ray detector group detects the X-rays penetrating through the mineral aggregate and transmits detection signals to the electronic control unit, the electronic control unit calculates an X-ray absorption value penetrating through the mineral aggregate, an X-ray absorption threshold value of the mineral concentrate is set in the electronic control unit, and the electronic control unit compares the calculated X-ray absorption value with the set X-ray absorption threshold value to sort the impurity-containing middlings and the impurity-containing metal ores so as to obtain the mineral concentrate.
Further, the X-ray generator is arranged above the mineral aggregate conveyed by the material conveying device, and the X-ray generator irradiates the mineral aggregate at an acute angle from top to bottom.
Further, the acute angle is 35-55 degrees.
Further, in the third step, the set X-ray absorption threshold is the X-ray absorption value when the X-ray passes through the concentrate with unit thickness.
Further, in the third step, when the difference value between the set X-ray absorption threshold and the detected X-ray absorption value is greater than 20% of the set X-ray absorption threshold, the electronic control unit controls the execution mechanism to separate the middling containing the impurities and the metal ore containing the impurities so as to obtain the concentrate.
Further, in the fourth step, transmission imaging analysis is performed on the concentrate of which the difference value between the set X-ray absorption threshold and the detected X-ray absorption value is within 5-20% of the set X-ray absorption threshold, information of non-mineral pixel particles in the ore is aggregated, the proportion of impurity components in the whole particles is obtained, and the ore material with higher proportion of impurities is separated from the concentrate, so that the purification of the concentrate from the concentrate is completed.
And further comprising a fifth step of recleaning the middlings containing the impurities and the metal ores containing the impurities, which are obtained by separation in the third step, to separate the middlings from the metal ores, wherein gamma rays emitted by a gamma ray radiation source are directed to the middlings and the metal ores during separation, and the middlings and the metal ores are separated by driving an executing mechanism according to different absorption quality factors of the gamma rays on minerals and mineral parts.
And further comprising a sixth step of crushing the middlings by using a crusher to generate mineral powder and impurity particles, separating the mineral powder from the impurity particles by using a centrifugal machine, and performing pressure filtration on the mineral powder to form mineral blocks.
Further, in the step one, a process of crushing the mineral aggregate is also included to obtain mineral aggregate blocks with uniform particle size, and the crushed mineral aggregate is provided for sorting through the material conveying device; in the second step, a weight measuring instrument and a volume measuring instrument are adopted to detect the mineral aggregate, the PLC logic control unit is utilized to calculate the density of the mineral aggregate, and an executing mechanism is driven to sort the concentrate, the middlings, the gangue and the metal ore according to the calculated density of the mineral aggregate.
According to the X-ray sensing-based ore separation method, the ore materials are subjected to multi-stage separation so as to be classified and fully utilized, the ore materials are subjected to fine screening and fine screening aiming at the primarily screened ore materials, so that the ore materials with different quality levels are obtained, and the high-quality ore materials obtained through fine screening meet the requirements of high-quality industrial ore. Meanwhile, different screening devices are selected in different screening processes, the screening devices are reasonably configured, and the operation cost of the screening process is saved, so that considerable economic and social benefits are generated.
Detailed Description
Embodiments of the present invention will be described in more detail below. It should be understood, however, that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Those skilled in the art will recognize that alternative embodiments may be made from the following description without departing from the spirit and scope of the invention.
The X-ray sensing-based ore sorting method of the present invention will be described in further detail in order to better understand the objects, structures and functions of the present invention.
The invention relates to a method for sorting mines by utilizing X-rays. The method comprises the following steps: step one, providing mineral aggregates for sorting by using a material conveying device.
And step two, roughing the mineral aggregate to screen concentrate, middlings, gangue and metal ores in the mineral aggregate.
The primary mineral aggregate of mining is a mixture composed of a large amount of concentrate, middlings, gangue, metal ores and the like, when the primary mineral aggregate is selected, the primary mineral aggregate is firstly subjected to simple and cheap primary screening, and the primary mineral aggregate after primary screening is conveniently subjected to fine screening in the downstream step. In the primary ore material, the densities of materials such as concentrate, middlings, gangue and metal ores are increased in sequence.
In the course of the roughing of the mineral aggregate, it is preferable to use a relatively inexpensive physical screening method, which may also be other methods known in the art. In this embodiment, mineral aggregate conveys through the batcher, for example, vibrating feeder and first material conveyer carry out the conveying, be provided with gravimetric measuring instrument and volume measuring instrument on the first material conveyer, gravimetric measuring instrument and volume measuring instrument carry out weight and volume measurement to the mineral aggregate that conveys along with first material conveyer, gravimetric measuring instrument and volume measuring instrument link to each other with the PLC logic control unit, the PLC logic control unit still links to each other with the executive module, gravimetric measuring instrument and volume measuring instrument carry out signal transmission to the PLC logic control unit after measuring mineral aggregate to the density of mineral aggregate is calculated in the PLC logic control unit, the PLC logic control unit calibrates mineral aggregate according to the density range of concentrate, middlings, waste rock, and metal ore that set for, and convey the signal to first actuating mechanism. The first executing mechanism sorts the concentrate, the middlings, the gangue and the metal ores according to the control signals transmitted by the PLC logic control unit.
Specifically, the first material conveying device comprises a plurality of conveying channels, and a weight measuring instrument and a volume measuring instrument can be arranged on each conveying channel. Alternatively, a weight measuring instrument and a volume measuring instrument are respectively arranged on the upper half section and the lower half section of each conveying channel. The first actuator can adopt a conventional mechanical driving mechanism, for example, the first actuator can be a separation plate driven by a servo motor to sieve concentrate, middlings, gangue, metal ores and the like. And (4) screening the primary mineral aggregate in the first step to obtain concentrate, partial middlings, and a small amount of gangue and metal ores mixed with other light impurities.
And step three, carrying out concentration on the mineral aggregate to screen the concentrate, the middlings containing impurities and the metal ores in the mineral aggregate.
In the primary screening of the first step, gangue and partial middlings are separated from the primary ore material, and in order to obtain high-quality ore concentrate with better quality and purer quality, the ore material needs to be further screened so as to separate impurity-containing middlings and metal ores in the ore material. And mineral materials are conveyed to the second material conveying device in the step two from the first material conveying device in the step one, the second material conveying device is provided with an X-ray generator, an X-ray detector group and an electronic control unit, the electronic control unit is connected with the X-ray detector group in a transmission mode and is also connected with the second executing mechanism, and the electronic control unit receives signals transmitted by the X-ray detector group and transmits executing command signals to the second executing mechanism after signal processing.
In particular, the X-ray generator may generate X-rays that pass through the mineral material, the X-ray detector array detecting the X-rays that pass through the mineral material, the X-ray detector array communicating the detected X-ray transmission signals to the electronic control unit, and the electronic control unit calculating the X-ray absorption or transmission percentage that penetrates the mineral material. The electronic control unit is provided with an X-ray absorption threshold value of the concentrate, and the X-ray absorption threshold value is preferably an X-ray absorption threshold value of the measured concentrate in a mine, such as an average value of a plurality of measured concentrates. The electronic control unit compares the actually measured X-ray absorption value calculated by the X-ray detector group with a set X-ray absorption threshold value so as to sort the concentrate, the impurity-containing middling and the metal ore in the mineral aggregate.
Specifically, when the difference between the set X-ray absorption threshold and the actually-measured X-ray absorption value is detected to be larger than 20%, the electronic control unit controls the second execution mechanism to separate middlings or metal ores containing impurities and retain concentrates. In the second step, the second actuator is preferably a quick-response actuator, such as a solenoid valve or an electromagnetic gas injection valve, and when it is detected that the difference between the set X-ray absorption threshold and the actually measured X-ray absorption value is greater than 20% of the set X-ray absorption threshold (i.e. the ratio of the difference to the set X-ray absorption threshold), the electronic control unit controls and activates the solenoid valve, and the solenoid valve separates the impurity-containing middlings and the metal ores out of the second material conveying device.
The X-ray generator is arranged above the mineral aggregate conveyed by the material conveying device, and irradiates the mineral aggregate from top to bottom at an acute angle, wherein the acute angle is preferably 35-55 degrees.
It should be noted that the above X-ray absorption threshold is preferably the X-ray absorption threshold for X-rays passing through a unit thickness of the concentrate. Correspondingly, the measured X-ray absorption value is also the measured X-ray absorption value of the mineral aggregate with unit thickness. For this reason, it is preferable to perform a mineral aggregate crushing operation before the first step to obtain mineral aggregate particles having a uniform thickness. Alternatively, the second material may be
The conveying device is provided with a thickness sensor which is connected with the electronic control unit so that the electronic control unit can calculate the actually measured X-ray absorption value of the mineral aggregate with unit thickness.
And step four, for the concentrate which is detected that the difference value between the set X-ray absorption threshold value and the actually-measured X-ray absorption value is within 20% of the set X-ray absorption threshold value, namely the concentrate obtained in the step two, further carrying out sorting treatment to obtain high-quality concentrate so as to meet the industrial demand on high-quality ore. And D, conveying the concentrate obtained in the step two to a third material conveying device, and carrying out concentration again on the concentrate on the third material conveying device so as to sort out high-quality concentrate and secondary concentrate.
In the concentrate obtained in the third step, namely, for the concentrate of which the difference value between the set X-ray absorption threshold and the detected X-ray absorption value is within 20% of the set X-ray absorption threshold, the situation that some ores are mixed with a plurality of impurities still exists, the distribution areas of the impurities in the ores mixed with the impurities are different, and the partial detection errors exist due to the limitation of the angle of the X-ray emitted by the X-ray generator. That is, the X-ray just penetrates through the pure ore or the local area with little impurity in the ore containing the impurity, so that the detection error is generated. Therefore, the concentrate whose difference between the set X-ray absorption threshold and the detected X-ray absorption value is within 5-20% of the set X-ray absorption threshold needs to be concentrated again.
Therefore, in step four, the information of the non-mineral pixel particles in the ore is aggregated by performing transmission imaging analysis on the concentrate of which the difference value between the set X-ray absorption threshold value and the detected X-ray absorption value is within 5-20% of the set X-ray absorption threshold value, so as to obtain the proportion of impurity components in the whole particles, and the ore material with higher proportion is separated from the concentrate.
It should be noted that the first material transfer device, the second material transfer device, and the third material transfer device may be different sections of the same material transfer device, or multiple material transfer devices may be connected. As long as the material transfer is satisfied, it is not described herein.
And further comprising a fifth step, wherein the mineral aggregate separated in the third step can be further processed. During separation, the gamma rays emitted by the gamma ray radiation source can be directed to middlings and metal ores, and the middlings and the metal ores are separated by driving the actuating mechanism according to different absorption quality factors of the gamma ray radiation to minerals and mineral parts.
Specifically, the mineral material separated in the third step is introduced into another material conveying device, and the mineral material separated in the third step (namely, impurity-containing middlings and metal ores) is separated again on the other material conveying device. This is particularly important for ores that contain a certain amount of metal minerals.
And when the metal detector detects that minerals containing metal components exist, a third executing mechanism controlled by the PLC logic control unit separates the minerals containing metal from the ores. The third actuator may be the same as the first actuator, employing a conventional mechanical drive mechanism.
And further, the method can also comprise a sixth step, in the sixth step, the middlings are crushed by a crusher to generate mineral powder and impurity particles, the mineral powder and the impurity particles are soaked and then separated by a centrifugal machine, hard impurity particles are left in the middle of the centrifugal device due to high density, the mineral powder slurry is dispersed to the periphery and discharged, and the mineral powder is subjected to standing drying and then is subjected to pressure filtration to form mineral blocks.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A method for sorting mines by using X-rays is characterized by comprising the following steps:
providing mineral aggregates for sorting by using a material conveying device;
step two, roughing the mineral aggregate to screen concentrate, middlings, gangue and metal ores in the mineral aggregate, and separating the gangue to obtain concentrate, middlings containing impurities and metal ores;
step three, the mineral aggregate obtained in the step two is selected, so that the concentrate, the middlings containing impurities and the metal ores in the mineral aggregate are separated;
step four, purifying and sorting the concentrate obtained in the step three to obtain concentrate;
in the third step, the middlings containing impurities and the metal ores containing impurities are sorted by using the X-ray generator, the X-ray detector group, the executing mechanism and the electronic control unit to obtain the concentrates.
2. The method of claim 1, wherein in step three, the X-ray generator generates X-rays to pass through the mineral aggregate, the X-ray detector set detects the X-rays passing through the mineral aggregate and transmits a detection signal to the electronic control unit, the electronic control unit calculates an X-ray absorption value of the mineral aggregate, an X-ray absorption threshold value of the mineral aggregate is set in the electronic control unit, and the electronic control unit compares the calculated X-ray absorption value with the set X-ray absorption threshold value to sort the mineral containing impurities and the metal mineral containing impurities to obtain the mineral aggregate.
3. The method of claim 2, wherein the X-ray generator is positioned above the mineral material conveyed by the material conveyor, the X-ray generator irradiating the mineral material at an acute angle from top to bottom.
4. A method of X-ray mine sorting according to claim 3 wherein the acute angle is 35-55 degrees.
5. The method as claimed in claim 2, wherein in step three, the X-ray absorption threshold is set to be the X-ray absorption value of X-rays passing through the concentrate with unit thickness.
6. The method for sorting mine by using X-ray according to claim 5, wherein in the third step, when the difference between the set X-ray absorption threshold and the detected X-ray absorption value is more than 20% of the set X-ray absorption threshold, the electronic control unit controls the actuator to separate the middling containing impurities and the metal ore containing impurities to obtain the concentrate.
7. The method of claim 6, wherein in step four, the transmission imaging analysis is performed on the ore concentrate whose difference between the set X-ray absorption threshold and the detected X-ray absorption value is within 5-20% of the set X-ray absorption threshold, the information of non-mineral pixel particles in the ore concentrate is aggregated to obtain the proportion of impurity components in the whole particles, and the ore material with higher impurity proportion is separated from the ore concentrate, thereby completing the purification of the ore concentrate from the ore concentrate.
8. The method for separating a mine by using X-rays according to claim 1, further comprising a fifth step of re-separating the middling containing impurities and the metal ores containing impurities separated in the third step to separate the middling from the metal ores, wherein the middling and the metal ores are directed to the middling and the metal ores by using gamma-rays emitted from a gamma-ray radiation source during separation, and the middling and the metal ores are separated by driving an actuator according to different absorption quality factors of the minerals and the mineral parts by gamma-ray radiation.
9. The method as claimed in claim 8, further comprising a sixth step of crushing the middlings with a crusher to produce mineral powder and impurity particles, separating the mineral powder from the impurity particles with a centrifuge, and press-filtering the mineral powder into mineral lumps.
10. The method for sorting mine by X-ray according to claim 1, wherein in the first step, the method further comprises a step of crushing the mineral aggregate to obtain mineral aggregate with uniform particle size, and the crushed mineral aggregate is provided for sorting by the material conveying device; in the second step, a weight measuring instrument and a volume measuring instrument are adopted to detect the mineral aggregate, the PLC logic control unit is utilized to calculate the density of the mineral aggregate, and an executing mechanism is driven to sort the concentrate, the middlings, the gangue and the metal ore according to the calculated density of the mineral aggregate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110852282.8A CN113787019A (en) | 2021-07-27 | 2021-07-27 | Method for sorting mine by using X-ray |
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| CN202110852282.8A CN113787019A (en) | 2021-07-27 | 2021-07-27 | Method for sorting mine by using X-ray |
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| US20110288679A1 (en) * | 2008-12-19 | 2011-11-24 | Omya Development Ag | Method for separating mineral impurities from calcium carbonate-containing rocks by x-ray sorting |
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| CN110052421A (en) * | 2019-04-29 | 2019-07-26 | 山东华特磁电科技股份有限公司 | A kind of coal mine method for separating based on X-ray sensing |
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2021
- 2021-07-27 CN CN202110852282.8A patent/CN113787019A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110288679A1 (en) * | 2008-12-19 | 2011-11-24 | Omya Development Ag | Method for separating mineral impurities from calcium carbonate-containing rocks by x-ray sorting |
| CN107309073A (en) * | 2016-04-27 | 2017-11-03 | 甘肃省合作早子沟金矿有限责任公司 | Magnetic iron ore combines advance process for discarding tailings |
| CN110046653A (en) * | 2019-03-22 | 2019-07-23 | 赣州好朋友科技有限公司 | A kind of white tungsten method for separating and system based on XRT ray |
| CN110052421A (en) * | 2019-04-29 | 2019-07-26 | 山东华特磁电科技股份有限公司 | A kind of coal mine method for separating based on X-ray sensing |
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