Quartz rock ore grading and quality-grading evaluation method for mining and utilization

Abstract

The invention discloses a quartzite ore grading and quality-grading evaluation method for mining and utilization in the field of mine development and utilization, which comprises the following steps of: 1, dividing a mine, selecting a plurality of sampling points, carrying out three-dimensional sampling at the sampling points through a sampling processing device and recording the positions of the sampling points, treating and grading the samples through a sampling treatment device, and dividing colorless and transparent samples into S1-grade samples; 2, performing inclusion property evaluation and grading on the S1-grade sample to obtain an evaluation and grading result; and 3, inputting the evaluation grading result and the sampling position of the corresponding ore body sample Yijk into a comprehensive evaluation function of the mine raw materials for calculation to obtain a calculation result, then dividing the mine according to the raw material grades according to the calculation result and the mine three-dimensional diagram, and establishing a grading and quality-grading evaluation model. According to the method, specific distribution and the like of ores with different qualities in a mine can be clearly and visually mastered before mining, and high-value and high-efficiency comprehensive utilization of resources is realized.

Description

Technical Field

[0001] This invention relates to the field of mining development and utilization technology, specifically to a method for grading and evaluating quartzite ore for mining and utilization. Background Technology

[0002] Quartzite is an important siliceous raw material mineral in my country. Traditionally, it has been mined and used primarily as a bulk raw material for glass, ceramics, metallurgical flux, and construction sand. Resource development and utilization have been relatively extensive, resulting in generally low added value. With the rapid development of high-tech industries such as photovoltaics, semiconductors, and optical communications, the market demand for high-purity quartz sand with SiO2 purity greater than 99.99% has increased dramatically. Currently, these high-value-added products mainly rely on small amounts of high-quality quartz minerals. In fact, many quartzite ore bodies have the potential to be purified and used to produce high-purity quartz sand. However, due to a lack of raw material quality evaluation and research on the three-dimensional spatial distribution of ore bodies, mines cannot accurately determine the specific three-dimensional distribution of different quality ores (such as raw materials suitable for different uses like high-purity quartz sand, photovoltaic glass, daily-use glass, and construction sand) before mining. This leads to the mining process only being able to mix all ores or roughly distinguish them based on experience. Consequently, a large amount of potential high-quality quartzite resources have failed to be identified and separated, and are instead used as ordinary building materials or low-end glass raw materials. This results in a huge waste of advantageous resources that cannot be transformed into raw materials and economic advantages needed by high-end industries. Therefore, we propose a grading and quality evaluation method for quartzite ore for mining and utilization. Summary of the Invention

[0003] The purpose of this invention is to provide a method for grading and evaluating quartzite ore for mining and utilization, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: The method for grading and evaluating quartzite ore used for mining and utilization includes the following steps: Step 1: Divide the mine according to the planar and depth distribution of the quartzite ore body, select several sampling points, and use a sampling and processing device to perform three-dimensional sampling at the sampling points and record their positions to obtain ore body sample Y. ijk Then, the ore body sample Y is processed by a sampling and processing device. ijk The samples were processed and graded by color, with the colorless and transparent samples classified as S1 grade samples. Step 2: After processing the S1 grade sample from Step 1 into quartz sand particles, evaluate and classify the inclusion properties to obtain the evaluation and classification results. Step 3: Combine the assessment and grading results from Step 2 with the corresponding orebody sample Y. ijkThe sampling location is input into the pre-constructed comprehensive evaluation function of mine raw materials to calculate the results. Then, based on the calculation results and the three-dimensional map of the mine, the mine is divided according to the raw material grade, and a graded and quality-based evaluation model is established to classify and grade the mine for mining and utilization.

[0005] A further improvement is that in step one, a grid method is used for division, with a grid spacing of 3-6 meters. The grid boundaries are sampling points, and the sampling and processing device takes samples at intervals of 1-3 meters according to the changes in the ore.

[0006] A further improvement is that the color-based grading in step one includes: a colorless and transparent sample is grade S1, a colorless and opaque sample is grade S2, and a colored sample is grade S3.

[0007] A further improvement is that, in step two, after the S1 grade sample is processed into 40-140 mesh quartz sand particles, the inclusion properties are evaluated and graded. The inclusion property assessment and grading includes the following steps: Observation is performed using an optical microscope. First, the inclusion content is assessed by the percentage of the inclusions relative to the area of ​​the quartz grains. Samples with a content of less than 5% are classified as L1 grade, samples with a content of 5%-20% as L2 grade, and samples with a content of more than 20% as L3 grade. Then, the size of the inclusions in L1 grade samples is assessed. Samples with more than 90% of inclusions larger than 30 μm are classified as D1 grade, samples with more than 90% of inclusions between 10-30 μm are classified as D2 grade, and other samples are classified as D3 grade.

[0008] A further improvement is that the comprehensive evaluation function for mineral raw materials in step three is: F(Y ijk ) = Sa + Lb + Dc; Among them, F(Y) ijk The figure represents the overall quality of an ore body sample with the mine's planar grid boundary as the origin, a horizontal distance of i meters, a vertical distance of j meters, and a depth of k meters. Sa, Lb, and Dc represent the ore body sample Y. ijk Scores for each indicator.

[0009] A further improvement is that the sampling and processing device in step one includes: a vehicle body, a sampling mechanism and a processing mechanism disposed on the vehicle body, and the vehicle body is provided with an opening through which the sampling mechanism passes. The sampling mechanism includes a telescopic device 1 mounted on the vehicle body, a bracket mounted on the output end of the telescopic device 1, a rotating device 1 mounted on the bracket, a cylinder vertically mounted at the bottom of the bracket, and a spiral blade mounted inside the cylinder and coaxial with the cylinder. One end of the spiral blade is connected to the output end of the rotating device 1, and the other end extends to the bottom of the cylinder and is connected to a drill bit. The outer walls on both sides of the cylinder are respectively provided with a discharge pipe 1 and a discharge pipe 2, and both discharge pipe 1 and discharge pipe 2 are provided with valve bodies. The processing mechanism includes a housing mounted on the vehicle body, a hopper inserted into the housing and corresponding to the discharge pipe, and a grading conveying section corresponding to the hopper inside the housing.

[0010] A further improvement is that the grading and conveying unit includes a section disposed within the housing and located below the hopper for receiving and conveying the ore body sample Y. ijk The conveyor belt device 1 has a conveyor belt device 2, a conveyor belt device 3, and a conveyor belt device 4 arranged sequentially and parallel to each other on one side along the conveying direction of the conveyor belt device 1. The ends of the conveyor belt devices 2 and 3 near the hopper are rotatably connected to the inner wall of the housing, and the bottom of the ends away from the hopper are movably connected to telescopic devices 2. One end of each telescopic device 2 is fixedly connected to the vehicle body, and the telescopic device 2 is electrically connected to the control module. An image acquisition module is set on the inner wall of the housing above the conveyor belt device 1. The image acquisition module is electrically connected to the analysis module, and the analysis module is electrically connected to the control module. The image acquisition module is used to acquire real-time data of the ore body sample Y on the conveyor belt device. ijk The image data is received by the analysis module and compared with the standard data stored in the database to obtain the comparison result. The control module controls the corresponding telescopic device II to work according to the comparison result.

[0011] A further improvement is that a classification and storage section is provided on the vehicle body at the ends of conveyor belt device 2, conveyor belt device 3 and conveyor belt device 4. The classification and storage section includes a guide hopper for receiving samples. The bottom of the guide hopper is connected to a guide pipe. A disc is eccentrically provided below the guide pipe. Several sets of sample placement cans are inserted in a circular array on the disc, and one of the sample placement cans is directly corresponding to the guide pipe. The disc is connected to the output end of the rotating device 2 provided on the vehicle body.

[0012] A further improvement is that a diversion pipe is provided on the inner wall of the housing and above the conveyor belt device. The diversion pipe is located between the hopper and the image acquisition module and extends along the width direction of the conveyor belt device. Several sets of nozzles are provided at the bottom of the diversion pipe. The diversion pipe is connected to a water supply device through a pipeline. The water supply device is located on the vehicle body and outside the housing. Water filter holes are evenly opened on the conveyor belt of the conveyor belt device. A hollow collection box is provided on the vehicle body and below the conveyor belt device. The collection box is used to collect the water flow and impurities falling through the water filter holes. The bottom of the housing is hollow and is connected to the vehicle body through a telescopic device.

[0013] A further improvement is that a vibrating part is rotatably provided inside the housing and on the inner side of the conveyor belt of the first conveyor belt device. The vibrating part includes a shaft, a roller body sleeved on the outer wall of the shaft, and a number of protrusions provided on the outer circumference of the roller body. The shaft is connected to the drive system of the first conveyor belt device for driving the roller body to rotate and impact the upper inner wall of the conveyor belt when the first conveyor belt device is conveying.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention first ensures that the samples fully represent the three-dimensional spatial distribution characteristics of the ore body through three-dimensional grid sampling and location recording from planar to depth, laying a reliable data foundation for subsequent evaluation. Second, based on the appearance, color, inclusion content, and size of the samples, it can clearly and practically classify raw material grades suitable for different uses such as high-purity quartz sand, photovoltaic / float glass sand, ordinary glass sand, and construction sand. Finally, by constructing a comprehensive evaluation function and graded quality assessment model for mine raw materials that are compatible with three-dimensional spatial location, it is convenient to classify and utilize resources according to different grades. Before mining, it is possible to clearly and intuitively grasp the specific distribution of different quality ores in the mine, which can guide the mine to formulate the optimal mining plan and achieve high-value and efficient comprehensive utilization of resources. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the sampling and processing device of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram; Figure 3 For the present invention Figure 1 Structural sectional view; Figure 4 For the present invention Figure 3 Enlarged view of structure A in the image; Figure 5 This is a schematic diagram of the classification and storage section structure in this invention.

[0016] In the diagram: 100, vehicle body; 200, sampling mechanism; 201, telescopic device one; 202, rotating device one; 203, cylinder; 204, discharge pipe one; 205, spiral blade; 206, discharge pipe two; 207, drill bit; 300, processing mechanism; 301, shell; 302, hopper; 303, conveyor belt device one; 304, conveyor belt device two; 305, conveyor belt device three; 306, telescopic device two; 307, collection box; 308, conveyor belt device four; 309, classification and storage section; 3091, guide hopper; 3092, disc; 3093, sample placement container; 310, diversion pipe; 311, image acquisition module; 312, vibrating part; 313, telescopic device three; 314, water supply equipment. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1

[0019] The method for grading and evaluating quartzite ore used for mining and utilization includes the following steps: Step 1: Based on the planar and depth distribution of the quartzite ore bodies revealed by the geological exploration data of the mining area, the mine is divided into sections, and several sampling points are selected. In this embodiment, a grid method is used to divide the mine planarly, with a grid spacing of 3-6 meters. The grid boundaries are the sampling points. A sampling and processing device is used to perform three-dimensional sampling at the sampling points (in this embodiment, the sampling and processing device samples at intervals of 1-3 meters depending on the ore variation) and its location is recorded to obtain a representative ore body sample Y from the mine. ijk (This means a sample with the mine's planar grid boundary as the origin, a horizontal distance of i meters, a vertical distance of j meters, and a depth of k meters), and then processed by a sampling and processing device on the ore body sample Y. ijk The samples are processed and graded by color. The colorless and transparent samples are classified as S1 grade samples and then processed. In this embodiment, the grading by color in step one includes: colorless and transparent samples are S1 grade, colorless and opaque samples are S2 grade, and colored samples are S3 grade. S1 grade samples can be evaluated later, S2 grade samples can be used as high-quality glass sand raw materials, and S3 grade samples can be used as pickling sand or construction sand raw materials. Step 2: After processing the S1 grade sample from Step 1 into quartz sand particles, evaluate and classify the inclusion properties to obtain the evaluation and classification results. In step two of this embodiment, the S1 grade sample is sanded (such as through standardized sand-making processes like crushing and screening) to obtain 40-140 mesh quartz sand particles (this particle size range ensures the convenience of subsequent observation and is also a typical specification for high-purity quartz sand raw materials), and then the inclusion properties are evaluated and graded. The inclusion property assessment and grading in this embodiment includes the following steps: Observation is performed using an optical microscope. First, the inclusion content is assessed by the percentage of the inclusions relative to the quartz grain area. Samples with a content below 5% are classified as L1 grade, samples with a content between 5% and 20% as L2 grade, and samples with a content above 20% as L3 grade. L1 grade samples can be used for subsequent inclusion size assessment, L2 grade samples can be used as raw materials for 4N5 grade high-purity quartz sand, and L3 grade samples can be used as raw materials for 4N grade high-purity quartz sand. Then, the L1 grade samples... The inclusion size was evaluated, and samples with more than 90% of inclusions larger than 30 μm were classified as D1 grade, samples with more than 90% of inclusions between 10 and 30 μm were classified as D2 grade, and other samples were classified as D3 grade. Among them, D1 grade can be used as high-quality 4N8 grade high-purity quartz sand raw material, D2 grade can be used as qualified high-purity quartz sand raw material, and D3 grade can be used as 4N5 grade high-purity quartz sand raw material. Through the above method, the subsequent comprehensive resource evaluation and graded mining model can be established on a solid and detailed data foundation. Step 3: Combine the assessment and grading results from Step 2 with the corresponding orebody sample Y. ijk The sampling location is input into the pre-constructed comprehensive evaluation function of mine raw materials to calculate the results. Then, based on the calculation results and the three-dimensional map of the mine, the mine is divided according to the raw material grade, and a graded and quality-based evaluation model is established to classify and grade the mine for mining and utilization. High-purity quartz sand raw material area, photovoltaic / float glass sand raw material area, daily glass raw material area, building sand area, etc. are specifically divided to achieve high-value and efficient comprehensive utilization of resources. Specifically, the comprehensive evaluation function for mineral raw materials in step three of this embodiment is: ; Among them, F(Y) ijk The figure represents the overall quality of an ore body sample with the mine's planar grid boundary as the origin, a horizontal distance of i meters, a vertical distance of j meters, and a depth of k meters. Sa, Lb, and Dc represent the ore body sample Y. ijk The scores for each indicator, namely the assigned value Sa for color grade S, the assigned value Lb for inclusion content grade L, and the assigned value Dc for inclusion size grade D, will be used to calculate F(Y). ijk The results are marked on the 3D map of the mine (based on geological exploration data), and F(Y) of the eight vertices of any 3D region is used to determine the values ​​of the values ​​of the vertices. ijk The results can determine the overall raw material grade of the three-dimensional region, and then construct a graded and quality-based evaluation model. Optionally, in this embodiment, each ore body sample F(Y) can be used to determine the overall raw material grade of the three-dimensional region.ijk The data is spatially entered as attribute data, and geostatistical interpolation algorithms (such as Kriging) are used to predict the quality score between known points, thereby generating a continuous and smooth comprehensive quality score field throughout the entire ore body. Then, based on the pre-set F-value threshold range (e.g., F≥8 for Grade I, 6≤F<8 for Grade II, etc.), continuous ore blocks of different raw material grades (such as high-quality high-purity quartz raw materials, glass sand raw materials, construction sand raw materials, etc.) are automatically delineated and divided in three-dimensional space. These ore blocks are represented in the model as three-dimensional entities filled with different colors or legends, ultimately forming an intuitive "three-dimensional evaluation model for mine grading and quality classification", which facilitates the use of high-quality ore for high-quality utilization and tiered utilization from the source, avoiding resource waste and value loss.

[0020] Example 2

[0021] Please see the appendix Figure 1-4 The sampling and processing device in step one includes: a vehicle body 100, a sampling mechanism 200 and a processing mechanism 300 disposed on the vehicle body 100. The vehicle body 100 is provided with an access opening for the sampling mechanism 200 to pass through. In this embodiment, the vehicle body 100 can be an unmanned vehicle, etc., and is equipped with a wireless communication device, a photovoltaic power supply device and a GPS device, etc., which will not be described in detail here. The sampling mechanism 200 includes a telescopic device 201 (such as an electric telescopic rod) mounted on the vehicle body 100, a bracket at the output end of the telescopic device 201, a rotating device 202 (such as a motor) mounted on the bracket, a cylindrical body 203 (hollow at the bottom) vertically mounted at the bottom of the bracket, and a spiral blade 205 coaxial with the cylindrical body 203 and located inside the cylindrical body 203. One end of the spiral blade 205 is connected to the output end of the rotating device 202, and the other end extends to the bottom of the cylindrical body 203 and is connected to a drill bit 207. The outer walls of both sides of the cylindrical body 203 are respectively provided with a discharge pipe 204 and a discharge pipe 206, and both discharge pipes 204 and 206 are equipped with valve bodies. After reaching the grid sampling point, the telescopic device 201 drives the support to rotate the device 202, cylinder 203, spiral blade 205, and drill bit 207 through the movable opening. The rotating device 202 drives the spiral blade 205 and drill bit 207 to rotate and drill. At this time, the discharge pipe 206 valve is closed and the discharge pipe 204 valve is opened. The upper rock cuttings generated by drilling are lifted by the spiral blade 205 and discharged through the discharge pipe 204 (considered as waste or shallow sample). When the drill bit 207 reaches the target sampling depth, the valve state is switched (discharge pipe 204 is closed and discharge pipe 206 is opened). The sample at the target depth is then lifted by the spiral blade 205 and discharged from the discharge pipe 206. The processing mechanism 300 includes a housing 301 mounted on the vehicle body 100, a hopper 302 inserted into the housing 301 and corresponding to the discharge pipe 206, and a grading conveying section inside the housing 301 for the hopper 302. The ore sample Y discharged from the discharge pipe 206... ijk The material is fed into the grading conveyor section via hopper 302 for further processing. It should be noted that the discharge pipe 204 of this application can be a telescopic pipe, with its bottom end connected to the vehicle body 100, and there is a certain distance between the discharge pipe 206 and the hopper 302.

[0022] Please see the appendix Figure 2-5 Preferably, the grading conveying unit in this embodiment includes a hopper 302 located inside the housing 301 for receiving and conveying the ore sample Y. ijk The conveyor belt device 303 has conveyor belt devices 304, 305 and 408 arranged sequentially and parallel to each other on one side along the conveying direction of the conveyor belt device 303. The conveyor belt devices 303, 304 and 305 and 408 can all be conveyor belt conveyors. The conveyor belt conveyor includes a frame, rollers rotatably mounted at both ends of the frame, a conveyor belt sleeved on the outer wall of the rollers, and a drive system that drives one of the rollers to rotate. In this device, the ends of conveyor belt device 2 304 and conveyor belt device 305 near the hopper 302 are rotatably connected to the inner wall of the housing 301, and the bottom of the other ends away from the hopper 302 are movably connected to telescopic device 2 306. Specifically, the outer wall of the frame of conveyor belt device 2 304 and conveyor belt device 305 near the hopper 302 is rotatably connected to the inner wall of the housing 301 via a rotating shaft. Sliding blocks are slidably provided on both sides of the bottom of the frame of conveyor belt device 2 304 and conveyor belt device 305, and the sliding blocks are connected to the output of telescopic device 2 306. The telescopic device 306 in this embodiment is an electric telescopic rod with an end hinge. One end of each telescopic device 306 is fixedly connected to the vehicle body 100, and the telescopic device 306 is electrically connected to the control module. An image acquisition module 311 is provided on the inner wall of the housing 301 and above the conveyor belt device 303. In this embodiment, the image acquisition module 311 is such as a camera or an industrial camera. The image acquisition module 311 is electrically connected to the analysis module (such as an industrial control computer equipped with an image processing algorithm), and the analysis module is electrically connected to the control module (such as a PLC). Image acquisition module 311 is used to acquire images of the ore body sample Y on conveyor belt device 303 in real time. ijkThe image data analysis module receives the image data and compares it with standard data stored in the database (the standard data includes colorless and transparent image data, colorless and opaque image data, and colored image data) to obtain the comparison result (i.e., colorless and transparent sample, colorless and opaque sample, or colored sample). The control module controls the corresponding telescopic device 2 306 to work according to the comparison result. In this embodiment, when the sample is identified as colorless and transparent (S1 grade), the conveyor belt device 2 304 and the conveyor belt device 305 are kept in a horizontal state. The sample will be smoothly transported to the last conveyor belt device 4 308 through the conveyor belt device 1 303, the conveyor belt device 2 304, and the conveyor belt device 305 and sent out to enter the subsequent sand making and inclusion evaluation deep processing process. When the sample is identified as colorless and opaque (S2 grade), the telescopic device 2 306 corresponding to the conveyor belt device 2 304 is activated, making it... One end of the conveyor belt device is tilted downwards to unload the sample. After being guided by the tilted conveyor belt device 304 at the end of the first conveyor belt device 303, the sample is directly discharged and collected as glass sand raw material. When a colored sample (S3 grade) is identified, the telescopic device 306 corresponding to the third conveyor belt device 305 is activated, causing one end of the conveyor belt device 305 to tilt downwards to unload the sample. After being guided by the first conveyor belt device 303 and the second conveyor belt device 304, the sample falls into the tilted conveyor belt device 305 and is discharged, and is processed as building sand or pickled sand raw material. This method greatly improves the efficiency and consistency of the initial screening of samples, avoids the subjective error and fatigue of manual sorting, ensures the accuracy of S1 grade sample screening, and improves the accuracy of subsequent evaluation and grading results. On the other hand, by diverting samples of different color grades to different paths in real time, the material handling process is optimized, which facilitates subsequent classification and processing and improves work efficiency.

[0023] Preferably, in this embodiment, the vehicle body 100 is provided with a classification and storage section 309 with the same structure at the end of the conveyor belt device 2 304, the conveyor belt device 305, and the conveyor belt device 4 308. The classification and storage section 309 is also located inside the telescopic device 2 306. The classification and storage section 309 includes a guide hopper 3091 for receiving samples. It should be noted that when the conveyor belt device 2 304 and the conveyor belt device 305 are turned into the tilted unloading state, they correspond to the guide hopper 3091. The bottom of the guide hopper 3091 is vertically connected to a guide pipe. A disc body 3092 is eccentrically provided below the guide pipe. Several sets of sample placement cans 3093 for accommodating samples are inserted in a circular array on the disc body 3092, and one of the sample placement cans 3093 corresponds directly to the guide pipe. The disc body 3092 is connected to the output end of the rotating device 2 (such as a stepper motor and a reducer) provided on the vehicle body 100. By controlling the intermittent rotation of the rotating device 2, any sample placement container 3093 on the disc 3092 can be stopped sequentially to a position directly opposite the outlet of the feed pipe, realizing continuous and batch collection of samples of the same grade, strictly avoiding cross-contamination between different batches or different grades of samples, improving the standardization of sample collection and storage efficiency, and reducing the intervention of manual handling and packaging.

[0024] Preferably, in this embodiment, a diversion pipe 310 is provided on the inner wall of the housing 301 and above the conveyor belt device 303. The diversion pipe 310 is located between the hopper 302 and the image acquisition module 311 and extends along the width direction of the conveyor belt device 303. Several sets of nozzles (high-pressure nozzles can be used) are provided at the bottom of the diversion pipe 310. The diversion pipe 310 is connected to a water supply device 314 (composed of a water tank and a water pump) through a pipeline. The water supply device 314 is located on the vehicle body 100 and outside the housing 301. Water filter holes are evenly opened on the conveyor belt of the conveyor belt device 303. A hollow-topped collection box 307 is provided on the vehicle body 100 and below the conveyor belt device 303. The collection box 307 is used to collect the water flowing down through the water filter holes. Impurities are removed from the shell 301, which is hollow at the bottom and connected to the vehicle body 100 via a telescopic device 313 (such as a hydraulic cylinder or electric push rod). When the ore sample falls from the hopper 302 onto the conveyor belt device 303 and is conveyed forward, the water supply device 314 is activated. Water flows through the diversion pipe 310 and is sprayed evenly downward from the nozzle to powerfully wash the sample surface to remove dust and loose attachments, improving the accuracy of subsequent image acquisition and color grading. The wastewater and impurities after washing fall into the collection box 307 below through the filter holes for unified treatment, while the clean sample is naturally drained in the subsequent conveying section. When it is necessary to maintain the inside of the shell 301 or to take or put the sample placement tank 3093, the shell 301 can be driven upward to the preset position by the telescopic device 313.

[0025] Preferably, in this embodiment, a vibrating part 312 is rotatably provided inside the housing 301 and on the inner side of the conveyor belt of the conveyor belt device 303. The vibrating part 312 includes a shaft (which is rotatably supported on both side walls of the housing 301 by bearings), a roller body sleeved on the outer wall of the shaft body, and a plurality of sets of protrusions provided on the outer circumference of the roller body. The protrusions are arc-shaped. The shaft body is connected to the drive system of the conveyor belt device 303 by transmission. The two can be connected by transmission such as gears, chains or synchronous belts. It is used to drive the roller body to rotate and impact the protrusions when the conveyor belt device 303 is conveying. When the conveyor belt device 303 is running, the shaft of the vibrating part 312 is driven to rotate through the transmission connection. The shaft causes the rollers to rotate synchronously. When the rollers rotate to a specific phase, the protrusions on the surface of the rollers will hit the upper inner wall of the conveyor belt, thereby causing the conveyor belt to vibrate. On the one hand, it can effectively shake off the residual dust and fine particles attached to the sample surface, and promote the water remaining on the sample surface and in the gaps after cleaning to be discharged from the filter holes, thereby improving the draining efficiency. On the other hand, the vibration can effectively prevent the filter holes from clogging and ensure the continuous smooth operation of its filtration function.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for the quality evaluation of quartzite ore for mining utilization, characterized in that: It comprises the following steps: Step one: according to the planar distribution and depth distribution of the quartzite ore body, the mine is divided, and a plurality of sampling points are selected, the stereoscopic sampling is carried out at the sampling points through the sampling processing device, and the positions are recorded, and the ore body sample Y is obtained ijk The ore body sample Y ijk is processed by the sampling processing device, and is graded according to color, and the colorless transparent sample is divided into S1 grade sample. Step two: after the S1 grade sample in step one is made into quartz sand particles, the inclusion property evaluation grading is carried out to obtain the evaluation grading result; Step three: input the evaluation grading results of step two and the sampling positions of corresponding ore body samples Y ijk into a pre-constructed comprehensive evaluation function of mine raw materials to calculate and obtain the calculation results. Then, the mine is divided according to the raw material grades based on the calculation results and the three-dimensional map of the mine, and a grading and quality evaluation model is established to carry out quality grading and mining utilization of the mine.

2. The evaluation method according to claim 1, characterized by: In step one, the grid method is used for division, the grid spacing is 3-6 meters, and the grid intersection is the sampling point. The sampling treatment device samples at intervals of 1-3 meters according to the ore change.

3. The evaluation method according to claim 1, characterized by: In step one, the color grading includes: the colorless transparent sample with S1 grade, the colorless opaque sample with S2 grade, and the colored sample with S3 grade.

4. The evaluation method according to claim 1, characterized by: In step two, the S1 grade sample is made into 40-140 mesh quartz sand particles, and then the inclusion property evaluation grading is carried out; In step two, the S1 grade sample is made into 40-140 mesh quartz sand particles, and then the inclusion property evaluation grading is carried out; 5. The evaluation method according to claim 2, characterized by: The comprehensive evaluation function of the mine raw material in step three is: ； Wherein, F(Y ijk ) is the comprehensive quality of the ore body sample with the horizontal distance i meters, the longitudinal distance j meters, and the depth k meters as the origin of the mine plane grid boundary, Sa, Lb, and Dc are the ore body sample Y ijk The score of each index.

6. The evaluation method according to claim 1, characterized by: The sampling treatment device in step one comprises a vehicle body (100), a sampling mechanism (200) and a processing mechanism (300) arranged on the vehicle body (100), and a movable opening is arranged on the vehicle body (100) for the sampling mechanism (200) to pass through; The sampling mechanism (200) comprises a telescopic device one (201) arranged on the vehicle body (100), a support arranged at the output end of the telescopic device one (201), a rotating device one (202) arranged on the support, a cylinder (203) vertically arranged at the bottom of the support, and a spiral blade (205) arranged in the cylinder (203) and coaxial with the cylinder (203). One end of the spiral blade (205) is connected with the output end of the rotating device one (202), and the other end extends below the cylinder (203) and is connected with a drill bit (207). The two side walls of the cylinder (203) are respectively provided with a discharge pipe one (204) and a discharge pipe two (206), and a valve body is arranged in each of the discharge pipe one (204) and the discharge pipe two (206). The processing mechanism (300) comprises a shell (301) arranged on the vehicle body (100), a hopper (302) inserted into the shell (301) and corresponding to the discharge pipe two (206), and a grading conveying part arranged in the shell (301) corresponding to the hopper (302).

7. The evaluation method according to claim 6, characterized by: The grading conveying part includes a conveying belt device one (303) arranged in the shell (301) and below the hopper (302) for receiving and conveying the ore body sample Y ijk The conveying belt device two (304) and the conveying belt device three (305) are rotatably connected to the inner wall of the shell (301) at one end close to the hopper (302), and the bottom of the other end away from the hopper (302) is movably connected with a telescopic device two (306) respectively, one end of each telescopic device two (306) is fixedly connected with the vehicle body (100), and the telescopic device two (306) is electrically connected with the control module, an image acquisition module (311) is arranged on the inner wall of the shell (301) and above the conveying belt device one (303), the image acquisition module (311) is electrically connected with an analysis module, and the analysis module is electrically connected with the control module. The image acquisition module (311) is used for acquiring image data of the ore body sample Y on the conveying belt device (303) in real time ijk The analysis module is used for receiving the image data and comparing the image data with standard data stored in a database to obtain a comparison result, and the control module controls the corresponding telescopic device (306) to work according to the comparison result.

8. The evaluation method according to claim 7, characterized by: The vehicle body (100) and located at the end of the conveyor belt device two (304), conveyor belt device three (305) and conveyor belt device four (308) are provided with classified storage part (309), the classified storage part (309) includes the guide chute (3091) for accessing sample, the guide chute (3091) bottom is communicated with the guide pipe, the guide pipe below is eccentricly provided with disc body (3092), the disc body (3092) is inserted with a plurality of groups of sample placement tank (3093) in annular array, and wherein a sample placement tank (3093) is opposite to the guide pipe, the disc body (3092) is connected with the rotation equipment two output end arranged on the vehicle body (100).

9. The evaluation method according to claim 7, characterized by: The inner wall of the shell (301) and above the conveyor belt device one (303) is provided with a shunt pipe (310), the shunt pipe (310) is between the hopper (302) and the image acquisition module (311) and extends along the width direction of the conveyor belt device one (303), the shunt pipe (310) bottom is provided with a plurality of groups of nozzles, the shunt pipe (310) is connected with water supply equipment (314) through pipeline, the water supply equipment (314) is arranged on the vehicle body (100) and located outside the shell (301), the conveyor belt of the conveyor belt device one (303) is uniformly provided with water filter hole, the vehicle body (100) and below the conveyor belt device one (303) is provided with the collection box (307) with hollow top, the collection box (307) is used for receiving the water flow and impurities falling through the water filter hole, the shell (301) bottom is hollow and connected with the vehicle body (100) through the telescopic equipment three (313).

10. The evaluation method according to claim 7, characterized by: The shell (301) inside and located in the inner side of the conveyor belt of the conveyor belt device one (303) is provided with a vibration part (312), which includes a shaft part, a roller body sleeved on the outer wall of the shaft part, and a plurality of groups of protrusions provided on the circumferential outer wall of the roller body, the shaft part is drivingly connected with the drive system of the conveyor belt device one (303), for driving the roller body to rotate and impact the upper inner wall of the conveyor belt when the conveyor belt device one (303) is conveying.

Images