Open-air graphite mine mining method and system based on fine rock-ore separation

Abstract

The invention relates to the technical field of mining, and discloses an open-air graphite mine mining method and system based on fine rock-ore separation, and the method comprises the following steps: analyzing the geological structure, the ore occurrence state and the surrounding rock property of a graphite mine, and judging whether the graphite mine is a mining area or not according to the analysis result; blasting the mining area by adopting an open-pit mining mode to obtain mixed ore; fine rock-ore separation is conducted on the mixed ore through gravity separation, magnetic separation and flotation, and graphite ore and surrounding rock are obtained through separation; wherein the geological structure comprises fractures, wrinkles and lithology changes; the ore occurrence state comprises the form and continuity of graphite; the surrounding rock property comprises a rock stratum dip angle and a fault zone. According to the method, the mining process of the graphite mine is finely managed and controlled, so that the mining efficiency is improved, the cost is reduced, the safety guarantee is enhanced, the resource waste is reduced, and remarkable benefits are brought to the mining industry of the graphite mine.

Description

Technical Field

[0001] This invention relates to the field of mining technology, and more specifically, to an open-pit graphite mining method and system based on fine rock and mineral separation. Background Technology

[0002] Graphite, as an important functional material, is widely used in batteries, electrodes, conductive materials, and high-temperature lubricants. With industrial development, the demand for high-grade, high-purity graphite resources is constantly increasing. However, existing graphite mining technologies still have some problems, limiting the efficient development and utilization of graphite resources.

[0003] Traditional open-pit or underground mining methods rely heavily on experience to judge the mineability and ore quality of a mining area. They lack precise analysis of ore occurrence, geological structure, and surrounding rock properties, leading to low mining efficiency. Existing methods often fail to finely separate graphite ore from the surrounding rock, resulting in mixed ores with high impurity content, requiring multiple roughing processes, increasing energy consumption and costs. Furthermore, the assessment of mining difficulty is inaccurate. Traditional methods lack systematic analysis of graphite morphology, continuity, and content when assessing mining difficulty, easily causing inaccurate predictions and affecting mining plans and resource allocation. Geological risks are high. Existing mining technologies lack quantitative analysis of mine geological structures (such as faults, folds, and lithological variations) and surrounding rock properties (such as stratum dip angle and fault zone density), making it difficult to predict and control geological risks in a timely manner, increasing the risk of landslides or other geological disasters. Finally, ore grade control is insufficient. In the concentrate preparation process, traditional methods lack precise control over gravity separation, magnetic separation, and flotation processes, resulting in high impurity content in graphite ore, failing to meet the requirements of high-end applications.

[0004] Therefore, there is an urgent need for an open-pit graphite mining method and system based on fine rock-ore separation to improve the efficiency of graphite mining, reduce mining risks, and obtain high-purity graphite ore to meet the needs of modern industry for high-quality graphite resources. Summary of the Invention

[0005] In view of this, the present invention proposes an open-pit graphite mining method and system based on fine rock and mineral separation, aiming to solve the problems of low mining efficiency and low degree of automation in the current technology.

[0006] This invention proposes a method for open-pit graphite mining based on fine rock-mineral separation, comprising: The geological structure, ore occurrence, and surrounding rock properties of the graphite mine are analyzed, and the results are used to determine whether the graphite mine is a mineable area. Open-pit mining is used to blast the oreable area to obtain mixed ore; The mixed ore is subjected to fine rock-mineral separation by gravity separation, magnetic separation and flotation to separate graphite ore from the surrounding rock; The geological structures include faults, folds, and lithological variations; the ore occurrence state includes the morphology and continuity of graphite; and the surrounding rock properties include the dip angle of rock strata and fault zones.

[0007] Preferably, when analyzing the geological structure, ore occurrence state, and surrounding rock properties of a graphite mine, and determining whether the graphite mine is a mineable area based on the analysis results, the following steps are taken: The geological structure of the graphite mine is analyzed based on the aforementioned fractures, folds, and lithological changes to determine whether the graphite mine is suitable for open-pit mining. When it is determined that the graphite mine is suitable for open-pit mining, the occurrence state of the ore is analyzed based on the morphology and continuity of the graphite to determine the mining difficulty of the ore. The properties of the surrounding rock are analyzed based on the dip angle of the rock strata and the fault zones to predict the risk level during the mining process.

[0008] Preferably, when analyzing the geological structure of a graphite mine based on the aforementioned fractures, folds, and lithological variations to determine whether the graphite mine is suitable for open-pit mining, the following steps are included: Geological structure maps of graphite mines are drawn based on faults, folds and lithological changes. The number of fault zones and folds per unit area is obtained from the geological structure maps. At the same time, the number of lithological transformations per unit length is obtained from the geological structure maps. Pre-set the number of fault zones, the number of folds, and the number of lithological transformations per unit area; When the number of fracture zones within a unit area is greater than the preset number of fracture zones, and the number of folds within a unit area is greater than the preset number of folds, it is determined that the fracture zones and folds within the unit area are dense; otherwise, it is determined that the fracture zones and folds within the unit area are not dense. When the number of lithological transformations per unit length is greater than the preset number of lithological transformations, the lithological transformation frequency per unit length is determined to be high; otherwise, the lithological transformation frequency per unit length is determined to be low. When it is determined that the fault zones and folds are not dense within a unit area and the lithological transformation frequency is low within a unit length, the graphite mine is deemed suitable for open-pit mining.

[0009] Preferably, when it is determined that the graphite mine is suitable for open-pit mining, the analysis of the ore occurrence state based on the morphology, continuity, and content of graphite to determine the ore distribution and mining difficulty includes: The mining difficulty is initially assessed based on the morphology of graphite, resulting in an initial assessment result. This assessment result represents the mining difficulty of the graphite mine. The mining difficulty is ranked from low to high as Level 1, Level 2, and Level 3. The initial assessment result is then adjusted based on the continuity of the graphite.

[0010] Preferably, the continuity information of the graphite ore body is determined based on its extension direction and thickness; wherein, The main extension direction of the ore body is determined, and the standard deviation is calculated using statistical methods to quantify the stability of the extension direction. At the same time, the actual thickness data of the ore body is obtained, and the average thickness of the ore body is calculated. Preset the standard deviation and thickness preset values; The calculated standard deviation is compared with the preset standard deviation value, and the calculated average thickness is compared with the preset thickness value; the calculated standard deviation is denoted as a, and the preset standard deviation value is denoted as A; the calculated average thickness is denoted as b, and the preset thickness value is denoted as B; When a B, the continuity monitoring result of graphite is high. When a≥A or b≤B, the continuity monitoring result for graphite is low.

[0011] Preferably, the properties of the surrounding rock are analyzed based on the dip angle of the strata and fault zones to predict the risk level during the mining process, including: Based on the magnitude and variation of the rock strata dip angle, assess the risk of geological hazards during mining; at the same time, consider the distribution and scale of fault zones and analyze their impact on the stability of the surrounding rock. When the dip angle of the rock strata is greater than the preset safe dip angle value, or when the fault zones are dense and large in scale, the graphite mine is determined to be a high-risk area; otherwise, the graphite mine is determined to be a low-risk area. The criteria for determining whether the fault zones are dense and large in scale are that the number of fault zones per unit area is greater than the preset number of fault zones, the number of lithological transformations per unit length is greater than the preset number of lithological transformations, and the average size of the fault zones is greater than the preset size threshold.

[0012] Preferably, the geological structure, ore occurrence state, and surrounding rock properties of the graphite mine are analyzed, and the results are used to determine whether the graphite mine is a mineable area, including: When the judgment results indicate that the graphite mine is suitable for open-pit mining, the mining difficulty of the graphite mine is level two or below, and the graphite mine is a low-risk area, the graphite mine is determined to be a mineable area.

[0013] Preferably, the mixed ore is subjected to fine rock-mineral separation by gravity separation, magnetic separation, and flotation to separate graphite ore from the surrounding rock, including: The gravity separation is a process of separating mixed ores based on their density differences using gravity separation equipment, so that graphite ore is separated from the surrounding rock due to their different densities. The magnetic separation is based on the magnetic differences of the ore, and uses magnetic separation equipment to further separate the ore after gravity separation, separating magnetic impurity minerals from graphite ore. The flotation process involves using a flotation agent to separate the magnetically separated ore, thereby separating the graphite ore from the remaining surrounding rock due to differences in surface properties.

[0014] Preferably, the preparation method of the flotation agent includes: Sodium oleate and sodium dodecyl sulfonate are mixed and dissolved in a solvent to obtain a preliminary solution of the flotation agent; Stir the initial solution to ensure that sodium oleate and sodium dodecyl sulfonate are thoroughly mixed. During the stirring process, alkaline substances are gradually added to adjust the pH value of the solution, so that the flotation agent can achieve the best flotation effect. The adjusted solution is filtered to remove impurities and particulate matter, resulting in a pure flotation agent. The obtained flotation agent is dried to obtain a solid flotation agent; The ratio of sodium oleate to sodium dodecyl sulfonate is 1:1, the solvent is deionized water, and the alkaline substance is sodium hydroxide. During the stirring process, the stirring speed is 200 revolutions per minute, and the stirring time is 30 minutes. When adjusting the pH value, the pH value is controlled between 9 and 11. During the filtration process, a 0.2-micron filter membrane is used to ensure the removal of all impurities and particulate matter. During the drying process, the flotation agent is placed in a constant temperature oven at at least 60°C and dried for at least 24 hours.

[0015] This invention also proposes an open-pit graphite mining system based on fine rock-mineral separation, used to implement the above-mentioned open-pit graphite mining method based on fine rock-mineral separation. The open-pit graphite mining system based on fine rock-mineral separation includes: The mining exploration module is used to explore graphite mines and obtain the geological structure of the ore body, the occurrence state of the ore and the properties of the surrounding rock; The initial assessment module, based on information obtained from the mine exploration module, makes a preliminary assessment of the mining difficulty of the graphite mine; The continuity monitoring module is used to monitor the continuity of graphite and adjust the judgment results of the initial judgment module based on the monitoring results; The risk prediction module analyzes the properties of the surrounding rock based on the dip angle of the rock strata and the fault zones, and predicts the risk level during the mining process. The mineability assessment module determines whether a graphite mine is a mineable area based on its geological structure, ore occurrence, and surrounding rock properties. The rock-mineral separation module performs fine rock-mineral separation on mixed ores through gravity separation, magnetic separation and flotation to separate graphite ore from the surrounding rock; The rock and mineral separation module includes a gravity separation device, a magnetic separation device, and a flotation device, wherein the flotation device uses a flotation agent for flotation separation. The system control module is used to control the operation of each module and make comprehensive judgments based on the output results of each module to guide the mining process of graphite mines.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By monitoring the continuity of graphite mines and dynamically adjusting the mining difficulty based on the monitoring results, the mining process becomes more in line with actual conditions, improving mining efficiency and reducing mining costs.

[0017] 2. By analyzing the dip angle of rock strata and fault zones, the risk level in the mining process can be predicted, providing safety assurance for mining operations and reducing the probability of geological disasters.

[0018] 3. By comprehensively analyzing the geological structure, ore occurrence state, and surrounding rock properties, it is possible to determine whether a graphite mine is a mineable area, thereby improving the operability and accuracy of mining operations.

[0019] 4. By using fine rock-mineral separation methods such as gravity separation, magnetic separation and flotation, graphite ore was effectively separated from the surrounding rock, improving the grade and recovery rate of the ore and reducing resource waste.

[0020] 5. This invention also proposes an open-pit graphite mining system based on fine rock and mineral separation, which realizes an automated and intelligent mining process, improves mining efficiency and quality, and reduces labor costs and safety risks.

[0021] In summary, this invention improves mining efficiency, reduces costs, enhances safety, and reduces resource waste by implementing refined management and control of the graphite mining process. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A flowchart of an open-pit graphite mining method based on fine rock and mineral separation is provided for an embodiment of the present invention; Figure 2 This is a functional block diagram of an open-pit graphite mining system based on fine rock and mineral separation, provided as an embodiment of the present invention. Detailed Implementation

[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] See Figure 1 This embodiment provides a method for open-pit graphite mining based on fine rock and mineral separation, including: S1. Analyze the geological structure, ore occurrence state and surrounding rock properties of the graphite mine, and determine whether the graphite mine is a mineable area based on the analysis results; S2. Using open-pit mining methods, blasting is carried out in the mineable area to obtain mixed ore; S3. The mixed ore is subjected to fine rock-mineral separation by gravity separation, magnetic separation and flotation to separate graphite ore from the surrounding rock; The geological structures include faults, folds, and lithological variations; the ore occurrence state includes the morphology and continuity of graphite; and the surrounding rock properties include the dip angle of rock strata and fault zones.

[0025] It is understood that this embodiment discusses an open-pit graphite mining method based on fine rock and ore separation. The method mainly consists of the following steps: I. Geological Structure, Ore Occurrence State, and Surrounding Rock Properties Analysis of Graphite Mines The first step in implementing this mining method requires a comprehensive and in-depth analysis of the geological structure, ore occurrence, and surrounding rock properties of the graphite mine. The main purpose of this step is to determine whether the graphite mine is worth mining. The analysis includes: 1. Geological structure: Analyze geological features such as faults, folds and lithological changes to understand the structural stability inside the mine.

[0026] 2. Ore occurrence state: Study the morphology and continuity of graphite to assess the ore grade and mining difficulty.

[0027] 3. Surrounding rock properties: Analyze the characteristics of the surrounding rock, such as the dip angle of the rock strata and fault zones, to provide a basis for subsequent mining.

[0028] II. Open-pit mining and mixed ore acquisition After ensuring the graphite mine is commercially viable, open-pit mining is employed for resource development. This involves blasting the ore-bearing area to break the graphite ore and surrounding rock into a mixed ore. During this step, careful control of blasting parameters is crucial to minimize damage to the ore resources.

[0029] III. Fine rock-mineral separation of mixed ores The mixed ore undergoes processes such as gravity separation, magnetic separation, and flotation to effectively separate graphite ore from the surrounding rock. These three steps separate the ore based on its density, magnetic properties, and flotation characteristics, thereby improving the purity and recovery rate of the graphite ore.

[0030] 1. Gravity separation: This method uses the density difference of the ore to separate graphite ore from the surrounding rock. Common gravity separation equipment includes sluices and jigs.

[0031] 2. Magnetic separation: This method uses the difference in magnetic properties of the ore to separate graphite ore from the surrounding rock. Commonly used magnetic separation equipment includes magnetic separators and magnetic pulleys.

[0032] 3. Flotation: Graphite ore is separated from the surrounding rock by using flotation reagents based on the differences in its flotation properties. Common flotation equipment includes flotation machines and flotation columns.

[0033] IV. Mining and Utilization of Graphite Ore After fine separation of rock and minerals, graphite ore can be further mined and utilized. Graphite ore is widely used in metallurgy, chemical industry, energy and other fields, and has high economic value.

[0034] In summary, this embodiment provides an open-pit graphite mining method based on fine rock-ore separation. By analyzing the geological structure, ore occurrence state, and surrounding rock properties, the mining viability is determined. Open-pit mining is used to obtain mixed ore, and the graphite ore is separated from the surrounding rock through gravity separation, magnetic separation, and flotation processes. This method has high mining efficiency and resource utilization, contributing to the green and sustainable development of graphite mines.

[0035] In some embodiments of this application, the geological structure, ore occurrence state, and surrounding rock properties of a graphite mine are analyzed. When determining whether a graphite mine is a mineable area based on the analysis results, the following steps are included: The geological structure of the graphite mine is analyzed based on the aforementioned fractures, folds, and lithological changes to determine whether the graphite mine is suitable for open-pit mining. When it is determined that the graphite mine is suitable for open-pit mining, the occurrence state of the ore is analyzed based on the morphology and continuity of the graphite to determine the mining difficulty of the ore. The properties of the surrounding rock are analyzed based on the dip angle of the rock strata and the fault zones to predict the risk level during the mining process.

[0036] Understandably, this embodiment delves into the geological structure, ore occurrence, and surrounding rock properties of the graphite mine to assess its exploitability. This process primarily includes the following steps: First, an in-depth analysis of the geological structure of the graphite mine was conducted. By studying faults, folds, and lithological variations, we can determine whether the graphite mine is suitable for open-pit mining. This step is crucial because suitable geological conditions are essential for the successful operation of the mine.

[0037] Next, after determining that the graphite mine is suitable for open-pit mining, further analysis of the ore's occurrence is needed. This process is mainly achieved by studying the morphology and continuity of the graphite. Through this step, the mining difficulty of the ore can be determined, providing a strong basis for subsequent mining operations.

[0038] Finally, the properties of the surrounding rock need to be analyzed. This process mainly involves studying the dip angle of the rock strata and fault zones to predict the level of risk that may be encountered during mining. The purpose of this step is to ensure the safety of the mining process and reduce potential hazards.

[0039] In summary, a comprehensive analysis of the geological structure, ore occurrence, and surrounding rock properties of graphite mines allows for a more accurate determination of whether a graphite mine is a mineable area, and provides detailed mining strategies and risk warnings. This method helps improve mining efficiency, reduce mining costs, and ensure the safety of the mining process.

[0040] In some embodiments of this application, when analyzing the geological structure of a graphite mine based on the fractures, folds, and lithological changes to determine whether the graphite mine is suitable for open-pit mining, the following steps are included: Geological structure maps of graphite mines are drawn based on faults, folds and lithological changes. The number of fault zones and folds per unit area is obtained from the geological structure maps. At the same time, the number of lithological transformations per unit length is obtained from the geological structure maps. Pre-set the number of fault zones, the number of folds, and the number of lithological transformations per unit area; When the number of fracture zones within a unit area is greater than the preset number of fracture zones, and the number of folds within a unit area is greater than the preset number of folds, it is determined that the fracture zones and folds within the unit area are dense; otherwise, it is determined that the fracture zones and folds within the unit area are not dense. When the number of lithological transformations per unit length is greater than the preset number of lithological transformations, the lithological transformation frequency per unit length is determined to be high; otherwise, the lithological transformation frequency per unit length is determined to be low. When it is determined that the fault zones and folds are not dense within a unit area and the lithological transformation frequency is low within a unit length, the graphite mine is deemed suitable for open-pit mining.

[0041] Understandably, this embodiment proposes a method for analyzing the geological structure of graphite mines to determine their suitability for open-pit mining. This method mainly includes the following steps: First, a geological structure map of the graphite mine is drawn based on faults, folds, and lithological changes. The purpose of this step is to gain a detailed understanding of the geological conditions of the graphite mine, including information on fault zones, folds, and lithological transitions. The geological structure map is the foundation of the analysis and helps us better understand the internal structure of the mine.

[0042] Next, the number of fault zones and folds per unit area, as well as the number of lithological transitions per unit length, will be obtained using geological structural maps. These data will serve as the basis for subsequent judgments.

[0043] Next, the preset number and frequency of fault zones, folds, and lithological transitions per unit area are determined. This step is to establish a standard for subsequent comparison and judgment.

[0044] After obtaining the above information, the following judgment is made: 1. Determine the density of fault zones and folds per unit area. If the number of fault zones and folds obtained is greater than the preset number, the fault zones and folds are determined to be dense; otherwise, the fault zones and folds are determined to be not dense.

[0045] 2. Determine the frequency of lithological transformations per unit length. If the number of lithological transformations obtained is greater than the preset number, the lithological transformation frequency is determined to be high; otherwise, the lithological transformation frequency is determined to be low.

[0046] Finally, based on the above judgments, it is concluded that if the fault zones and folds are not dense within a unit area and the lithological transformation frequency is low within a unit length, then the graphite mine is suitable for open-pit mining.

[0047] In summary, this method allows for detailed geological analysis of graphite mines, enabling accurate determination of their suitability for open-pit mining. The scientific validity and practicality of this method contribute to improving the efficiency and safety of graphite mining.

[0048] In some embodiments of this application, when it is determined that the graphite mine is suitable for open-pit mining, the ore occurrence state is analyzed based on the morphology, continuity, and content of graphite to determine the ore distribution and mining difficulty, including: The mining difficulty is initially assessed based on the morphology of graphite, and an initial assessment result is obtained. In a mixed graphite mine containing flake graphite, powdered graphite, and crystalline graphite, when the percentage of flake graphite is greater than 50% and the percentage of crystalline graphite is less than 25%, the initial assessment result is that the mining difficulty of the graphite mine is Level 1. When the percentage of flake graphite is between 30% and 50% and the percentage of crystalline graphite is between 25% and 40%, the initial assessment result is that the mining difficulty of the graphite mine is level two. When the percentage of flake graphite is less than 30% and the percentage of crystalline graphite is greater than 40%, the initial assessment result is that the mining difficulty of the graphite mine is level three. The mining difficulty is ranked from low to high as Level 1, Level 2, and Level 3. The initial judgment result is adjusted based on the continuity of graphite; When the continuity monitoring result of graphite is low, the mining difficulty of the graphite mine will be adjusted upward by one level. When the initial judgment result is that the mining difficulty of the graphite mine is level three, it will remain at level three. When the continuity monitoring result of graphite is high, the mining difficulty of the graphite mine will be adjusted down one level. When the initial judgment result is that the mining difficulty of the graphite mine is level one, it will remain at level one.

[0049] Understandably, this embodiment focuses on the suitability of open-pit mining for graphite. To ensure the smooth progress of the mining process, a thorough analysis of the ore's occurrence is necessary, including factors such as the morphology, continuity, and content of graphite. Through these analyses, the distribution characteristics of the ore and the potential difficulties encountered during mining can be clarified.

[0050] First, a preliminary assessment of the mining difficulty must be made based on the morphology of the graphite. Graphite can be categorized into flake, powder, and crystalline forms. In actual mining operations, different morphologies of graphite significantly impact the mining difficulty. Therefore, a detailed analysis of the graphite mine's morphology is necessary to obtain a preliminary assessment.

[0051] In mixed graphite mines, the proportions of flake graphite, powdered graphite, and crystalline graphite significantly influence mining difficulty. When the percentage of flake graphite exceeds 50% and the percentage of crystalline graphite is less than 25%, the mining difficulty of the graphite mine can be classified as Level 1. This implies that the mining process is relatively easy.

[0052] Conversely, when the percentage of flake graphite is between 30% and 50%, and the percentage of crystalline graphite is between 25% and 40%, the mining difficulty of a graphite mine is classified as Level 2. This means that the mining process will be somewhat challenging, but with appropriate mining techniques and plans, efficient mining can still be achieved.

[0053] When the percentage of flake graphite is less than 30% and the percentage of crystalline graphite is greater than 40%, the mining difficulty of a graphite mine is upgraded to level three. This means that the mining process will face enormous challenges, requiring more technology and resources to overcome the difficulties.

[0054] It should be noted that the mining difficulty is divided into three levels: Level 1, Level 2, and Level 3, with Level 1 being the lowest difficulty and Level 3 being the highest difficulty.

[0055] After obtaining the initial assessment, the mining difficulty needs to be adjusted based on the continuity of graphite. Continuity refers to the distribution pattern of graphite in the ore, which has a significant impact on the mining difficulty.

[0056] When the continuity monitoring result for graphite is low, it means that the graphite distribution is uneven, and the mining difficulty will increase. In this case, the mining difficulty of the graphite mine needs to be adjusted upward by one level. However, if the initial assessment result is already at level three, then level three should be maintained.

[0057] Conversely, when the continuity monitoring result for graphite is high, the graphite distribution is relatively uniform, and the mining difficulty is relatively low. In this case, the mining difficulty of the graphite mine can be adjusted down one level. However, if the initial assessment result is already at level one, it should remain at level one.

[0058] This analytical approach and adjustment strategy allow for a more accurate assessment of the mining difficulty of graphite mines, providing a strong basis for open-pit mining. Simultaneously, it helps guide mining companies in developing reasonable mining plans and technical solutions, improving mining efficiency, and reducing mining costs.

[0059] In some embodiments of this application, the continuity information of the graphite ore body is determined based on its extension direction and thickness; wherein, The main extension direction of the ore body is determined, and the standard deviation is calculated using statistical methods to quantify the stability of the extension direction. At the same time, the actual thickness data of the ore body is obtained, and the average thickness of the ore body is calculated. Preset the standard deviation and thickness preset values; The calculated standard deviation is compared with the preset standard deviation value, and the calculated average thickness is compared with the preset thickness value; the calculated standard deviation is denoted as a, and the preset standard deviation value is denoted as A; the calculated average thickness is denoted as b, and the preset thickness value is denoted as B; When a B, the continuity monitoring result of graphite is high. When a≥A or b≤B, the continuity monitoring result for graphite is low.

[0060] Understandably, this embodiment will describe in detail how to determine the continuity information of a graphite ore body based on its extension direction and thickness. This method helps to better understand and assess the sustainability and mining value of graphite resources.

[0061] First, it is necessary to determine the main extension direction of the ore body. To achieve this, statistical methods are used to calculate the standard deviation, which quantifies the stability of the extension direction. Standard deviation is an indicator of data dispersion; the smaller the standard deviation of the extension direction, the higher the stability of the ore body's extension.

[0062] Next, it is necessary to obtain the actual thickness data of the ore body and calculate its average thickness. This step helps to understand the overall scale and continuity of the ore body. Actual thickness data can be obtained using various methods, such as geological exploration and borehole sampling.

[0063] After obtaining information on the extension direction and thickness of the ore body, it is necessary to pre-set the standard deviation and thickness preset values. These preset values ​​will serve as the benchmark for judging the continuity of the graphite ore body.

[0064] Subsequently, the calculated standard deviation is compared with the preset standard deviation value, and the calculated average thickness is compared with the preset thickness value. These two comparison steps help determine the continuity of the ore body.

[0065] The calculated standard deviation is denoted as 'a', and the preset value of the standard deviation is denoted as 'A'; the calculated average thickness is denoted as 'b', and the preset value of the thickness is denoted as 'B'. This is done to facilitate subsequent analysis and discussion.

[0066] Finally, based on the comparison results, the continuity monitoring results of graphite can be divided into two categories: high continuity and low continuity. When a B, the continuity of graphite is considered to be high; conversely, when a ≥ A or b ≤ B, the continuity of graphite is considered to be low.

[0067] The above methods can more accurately assess the continuity of graphite ore bodies, providing valuable decision-making support for mining companies. Furthermore, this method can also be applied to the assessment and monitoring of other types of mineral resources, demonstrating broad application prospects.

[0068] In some embodiments of this application, the properties of the surrounding rock are analyzed based on the dip angle of the strata and the fault zone to predict the risk level during the mining process, including: Based on the magnitude and variation of the rock strata dip angle, assess the risk of geological hazards during mining; at the same time, consider the distribution and scale of fault zones and analyze their impact on the stability of the surrounding rock. When the dip angle of the rock strata is greater than the preset safe dip angle value, or when the fault zones are dense and large in scale, the graphite mine is determined to be a high-risk area; otherwise, the graphite mine is determined to be a low-risk area. The criteria for determining whether the fault zones are dense and large in scale are that the number of fault zones per unit area is greater than the preset number of fault zones, the number of lithological transformations per unit length is greater than the preset number of lithological transformations, and the average size of the fault zones is greater than the preset size threshold.

[0069] Understandably, this embodiment proposes a method for predicting risk levels during graphite mining. This method primarily utilizes in-depth analysis of rock strata dip angles and fault zones to more accurately assess the potential risks associated with mining activities.

[0070] First, the risk of geological hazards must be assessed based on the magnitude and variation of the rock strata's dip angle. This is because the rock strata's dip angle directly affects the stability of the mine; areas with excessively large or drastically changing dip angles are more prone to geological hazards. By analyzing the rock strata's dip angle, potential dangerous situations during mining can be predicted in advance, thereby reducing the probability of accidents.

[0071] Secondly, the distribution and scale of fault zones must be considered in relation to the stability of the surrounding rock. Fault zones are tectonic phenomena in the Earth's crust; their existence can lead to the fracturing of rock strata, thereby affecting the stability of the mine. Therefore, a detailed analysis of the distribution and scale of fault zones is necessary to understand their specific impact on mine stability.

[0072] Next, a threshold is set to determine high-risk areas. When the dip angle of the rock strata exceeds a pre-set safe dip angle, or when there are dense and large-scale fault zones, the graphite mine is determined to be a high-risk area. Conversely, if the dip angle of the rock strata and the condition of the fault zones are within the safe range, the graphite mine is determined to be a low-risk area.

[0073] Here, it's necessary to clarify the criteria for identifying high-risk areas. First, the criteria for dense and large-scale fault zones are: the number of fault zones per unit area exceeds a pre-set number, indicating a relatively dense distribution of fault zones. Second, the number of lithological transformations per unit length exceeds a pre-set number, indicating poor rock stability. Finally, the average size of the fault zones exceeds a pre-set size threshold, indicating a large area of ​​influence.

[0074] In summary, the method described in this embodiment, through in-depth analysis of rock strata dip angles and fault zones, can accurately predict the risk level during graphite mining. This is of great significance for mine safety management and production planning, helping to reduce safety hazards caused by mining activities and ensuring the sustainable development of mines.

[0075] In some embodiments of this application, the geological structure, ore occurrence state, and surrounding rock properties of a graphite mine are analyzed, and the determination of whether the graphite mine is a mineable area is based on the analysis results, including: When the judgment results indicate that the graphite mine is suitable for open-pit mining, the mining difficulty of the graphite mine is level two or below, and the graphite mine is a low-risk area, the graphite mine is determined to be a mineable area.

[0076] Understandably, this embodiment provides a comprehensive and in-depth analysis of the geological structure, ore occurrence, and surrounding rock properties of the graphite mine. This analysis aims to assess the mining potential of the graphite mine, providing a scientific basis for mine development. The analysis results will help us determine whether the graphite mine is worth mining, specifically including the following aspects: First, an assessment is needed to determine whether open-pit mining is suitable for graphite mines. This is because open-pit mining is more efficient and less costly than underground mining, therefore, mines suitable for open-pit mining have greater development potential.

[0077] Secondly, we analyze the mining difficulty of graphite mines. We categorize mining difficulty into three levels, with level two and below indicating relatively low mining difficulty. For mines with lower mining difficulty, the challenges faced during development are fewer, which increases the likelihood of project success.

[0078] Finally, the risk level of the graphite mine is assessed. Risk levels are primarily categorized as low risk and high risk. In this context, low-risk areas are considered mines with high exploitation value. This is because low-risk areas face fewer environmental, social, and economic risks during development, which is conducive to the sustainable development of the mine.

[0079] Based on the analysis results of the above three aspects, a graphite mine can be identified as a mineable area when it meets the following conditions: First, it is suitable for open-pit mining; second, the mining difficulty is level two or below; and finally, it belongs to a low-risk area.

[0080] In summary, through in-depth analysis of the geological structure, ore occurrence, and surrounding rock properties of graphite mines, the mining potential of graphite mines can be assessed relatively accurately. This will help us discover more high-value mineable areas, providing strong support for the rational development and utilization of graphite resources. At the same time, this assessment method also provides a useful reference for the exploration and development of other mineral resources.

[0081] In some embodiments of this application, the mixed ore is subjected to fine rock-mineral separation by gravity separation, magnetic separation, and flotation to separate graphite ore from the surrounding rock, including: The gravity separation is a process of separating mixed ores based on their density differences using gravity separation equipment, so that graphite ore is separated from the surrounding rock due to their different densities. The magnetic separation is based on the magnetic differences of the ore, and uses magnetic separation equipment to further separate the ore after gravity separation, separating magnetic impurity minerals from graphite ore. The flotation process involves using a flotation agent to separate the magnetically separated ore, thereby separating the graphite ore from the remaining surrounding rock due to differences in surface properties.

[0082] Understandably, this embodiment proposes a fine rock-mineral separation method for mixed ores. This method mainly achieves the separation of graphite ore from the surrounding rock through three stages: gravity separation, magnetic separation, and flotation. The specific steps and principles of this method will be described in detail below.

[0083] First, the gravity separation stage separates the ore based on its density differences. In this process, gravity separation equipment, such as shaking tables and sluices, is used to separate the mixed ore. Due to the density difference between graphite ore and the surrounding rock, the graphite ore and the surrounding rock can achieve initial separation through gravity. This step lays the foundation for subsequent, more in-depth separation.

[0084] Next, the magnetic separation process further separates the ore based on differences in their magnetic properties. After gravity separation, the resulting ore is fed into magnetic separation equipment, such as magnetic separators or magnetic deionizers. These devices utilize the differences in the ore's magnetic properties to separate magnetic impurities from the graphite ore. This step helps improve the purity of the graphite ore, providing high-quality raw materials for subsequent processing.

[0085] Finally, the flotation stage involves using flotation reagents to separate the magnetically separated ore. This process utilizes flotation machines, flotation columns, and other equipment, taking advantage of the flotation reagents to alter the surface properties of the ore, ultimately separating the graphite ore from the remaining surrounding rock. This step ensures the high purity of the graphite ore, providing a reliable guarantee for subsequent applications.

[0086] In summary, through the fine separation of rock and ore in three stages—gravity separation, magnetic separation, and flotation—graphite ore can be effectively separated from the surrounding rock to obtain high-purity graphite ore.

[0087] In some embodiments of this application, the method for preparing the flotation agent includes: Sodium oleate and sodium dodecyl sulfonate are mixed and dissolved in a solvent to obtain a preliminary solution of the flotation agent; Stir the initial solution to ensure that sodium oleate and sodium dodecyl sulfonate are thoroughly mixed. During the stirring process, alkaline substances are gradually added to adjust the pH value of the solution, so that the flotation agent can achieve the best flotation effect. The adjusted solution is filtered to remove impurities and particulate matter, resulting in a pure flotation agent. The obtained flotation agent is dried to obtain a solid flotation agent; The ratio of sodium oleate to sodium dodecyl sulfonate is 1:1, the solvent is deionized water, and the alkaline substance is sodium hydroxide. During the stirring process, the stirring speed is 200 revolutions per minute, and the stirring time is 30 minutes. When adjusting the pH value, the pH value is controlled between 9 and 11. During the filtration process, a 0.2-micron filter membrane is used to ensure the removal of all impurities and particulate matter. During the drying process, the flotation agent is placed in a constant temperature oven at at least 60°C and dried for at least 24 hours.

[0088] It is understood that this embodiment will detail a method for preparing a flotation agent and its application. This method is of great significance in the field of mineral flotation, as it can effectively improve the utilization rate of mineral resources and reduce environmental pollution. The following are the detailed steps of the flotation agent preparation process: 1. Raw material preparation: First, sodium oleate and sodium dodecyl sulfonate are used as the main raw materials. These two substances play a key role in the flotation process. Sodium oleate has surface activity, which can reduce hydration on the mineral surface and improve the flotation effect; while sodium dodecyl sulfonate has good dispersing properties, which helps to achieve uniform flotation of minerals.

[0089] 2. Mixing and Dissolving: Mix sodium oleate and sodium dodecyl sulfonate evenly, then add an appropriate amount of solvent (such as deionized water) to dissolve. The addition of solvent during stirring helps improve the solubility and stability of the flotation agent.

[0090] 3. Stirring and mixing: Stir the initial solution to ensure that sodium oleate and sodium dodecyl sulfonate are thoroughly mixed. During stirring, carefully control the stirring speed and time to ensure that the two substances are fully contacted and mixed.

[0091] 4. Adjusting the pH value: During stirring, gradually add an alkaline substance (such as sodium hydroxide) to adjust the pH value of the solution. This is to create an environment conducive to the flotation agent's effectiveness, making it easier for the mineral surface to interact with the flotation agent. During pH adjustment, ensure the solution's pH is controlled between 9 and 11 for optimal flotation results.

[0092] 5. Filtration and Purification: The adjusted solution is filtered to remove impurities and particulate matter. A 0.2-micron filter membrane is used during filtration to ensure the removal of all impurities and particulate matter, resulting in a pure flotation agent.

[0093] 6. Drying treatment: The purified flotation agent obtained by filtration is dried. During the drying process, the flotation agent is placed in a constant temperature oven at at least 60°C for at least 24 hours to obtain a solid flotation agent.

[0094] 7. Quality Control: Throughout the preparation process, quality control is required at each stage to ensure the performance and effectiveness of the flotation agent. Key parameters include the ratio of sodium oleate to sodium dodecyl sulfonate, solvent type, stirring speed and time, pH adjustment, filtration method, and drying conditions.

[0095] Through the above seven steps, this embodiment successfully prepared a flotation agent with excellent flotation performance. This flotation agent can be used in various mineral flotation operations to improve the recovery rate of mineral resources and reduce tailings pollution. Furthermore, this invention can also be applied to other fields, such as wastewater treatment and oil-water separation, and has broad application prospects.

[0096] See Figure 2 The present invention also proposes an open-pit graphite mining system based on fine rock-mineral separation, used to implement the above-mentioned open-pit graphite mining method based on fine rock-mineral separation. The open-pit graphite mining system based on fine rock-mineral separation includes: The mining exploration module is used to explore graphite mines and obtain the geological structure of the ore body, the occurrence state of the ore and the properties of the surrounding rock; The initial assessment module, based on information obtained from the mine exploration module, makes a preliminary assessment of the mining difficulty of the graphite mine; The continuity monitoring module is used to monitor the continuity of graphite and adjust the judgment results of the initial judgment module based on the monitoring results; The risk prediction module analyzes the properties of the surrounding rock based on the dip angle of the rock strata and the fault zones, and predicts the risk level during the mining process. The mineability assessment module determines whether a graphite mine is a mineable area based on its geological structure, ore occurrence, and surrounding rock properties. The rock-mineral separation module performs fine rock-mineral separation on mixed ores through gravity separation, magnetic separation and flotation to separate graphite ore from the surrounding rock; The rock and mineral separation module includes a gravity separation device, a magnetic separation device, and a flotation device, wherein the flotation device uses a flotation agent for flotation separation. The system control module is used to control the operation of each module and make comprehensive judgments based on the output results of each module to guide the mining process of graphite mines.

[0097] It is understood that this invention proposes an innovative method and system for open-pit graphite mining based on fine rock-ore separation. This system aims to achieve efficient, safe, and environmentally friendly open-pit graphite mining and comprises the following seven main modules: I. Mine Exploration Module: This module is responsible for conducting detailed exploration of graphite mines, collecting information such as the geological structure of the ore body, the ore occurrence state, and the properties of the surrounding rock. This step is crucial for the formulation of subsequent mining plans, providing accurate first-hand data for mining operations.

[0098] II. Preliminary Assessment Module: Based on the information obtained from the mine exploration module, the preliminary assessment module will conduct a preliminary evaluation of the mining difficulty of the graphite mine. This assessment result will guide the selection of subsequent mining strategies to ensure the full development of mineral resources while reducing mining risks.

[0099] III. Continuity Monitoring Module: This module is used to monitor the continuity of the graphite mine in real time and dynamically adjusts the judgment of the initial judgment module based on the monitoring results. This helps ensure the safety and efficiency of the mining process and avoids accidents caused by changes in the continuity of the ore during mining.

[0100] IV. Risk Prediction Module: This module analyzes the dip angle of rock strata and fault zones to predict the risk level during the mining process. This helps mining companies take preventative risk measures in advance, ensuring the safe and smooth progress of the mining operation.

[0101] V. Mining Feasibility Assessment Module: This module combines geological structure, ore occurrence state, and surrounding rock properties to determine whether a graphite mine is a mineable area. This helps mining companies rationally plan mining areas and improve resource utilization.

[0102] VI. Rock-Mineral Separation Module: The rock-mineral separation module uses methods such as gravity separation, magnetic separation, and flotation to finely separate the mixed ore to obtain graphite ore and surrounding rock. This step is of great significance for improving the quality of graphite ore.

[0103] VII. System Control Module: The system control module is responsible for coordinating and controlling the operation of the above modules, and making comprehensive judgments based on the output results of each module, providing strong guidance for the mining process of graphite mines.

[0104] In summary, the open-pit graphite mining system based on refined rock-mineral separation proposed in this invention forms a complete mining system, encompassing exploration, initial assessment, continuous monitoring, risk prediction, mineability assessment, rock-mineral separation, and system control. This system helps improve the safety, efficiency, and environmental friendliness of graphite mining.

[0105] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0106] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0107] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0108] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for open-pit graphite mining based on fine rock and mineral separation, characterized in that, include: The geological structure, ore occurrence, and surrounding rock properties of the graphite mine are analyzed, and the results are used to determine whether the graphite mine is a mineable area. Open-pit mining is used to blast the oreable area to obtain mixed ore; The mixed ore is subjected to fine rock-mineral separation by gravity separation, magnetic separation and flotation to separate graphite ore from the surrounding rock; The geological structures include faults, folds, and lithological variations; the ore occurrence state includes the morphology and continuity of graphite; and the surrounding rock properties include the dip angle of rock strata and fault zones.

2. The open-pit graphite mining method based on fine rock and mineral separation according to claim 1, characterized in that, When analyzing the geological structure, ore occurrence, and surrounding rock properties of a graphite mine, and determining whether the mine is a mineable area based on the analysis results, the following should be considered: The geological structure of the graphite mine is analyzed based on the aforementioned fractures, folds, and lithological changes to determine whether the graphite mine is suitable for open-pit mining. When it is determined that the graphite mine is suitable for open-pit mining, the occurrence state of the ore is analyzed based on the morphology and continuity of the graphite to determine the mining difficulty of the ore. The properties of the surrounding rock are analyzed based on the dip angle of the rock strata and the fault zones to predict the risk level during the mining process.

3. The open-pit graphite mining method based on fine rock and mineral separation according to claim 2, characterized in that, When analyzing the geological structure of a graphite mine based on the aforementioned fractures, folds, and lithological variations to determine whether the graphite mine is suitable for open-pit mining, the following steps are included: Geological structure maps of graphite mines are drawn based on faults, folds and lithological changes. The number of fault zones and folds per unit area is obtained from the geological structure maps. At the same time, the number of lithological transformations per unit length is obtained from the geological structure maps. Pre-set the number of fault zones, the number of folds, and the number of lithological transformations per unit area; When the number of fracture zones within a unit area is greater than the preset number of fracture zones, and the number of folds within a unit area is greater than the preset number of folds, it is determined that the fracture zones and folds within the unit area are dense; otherwise, it is determined that the fracture zones and folds within the unit area are not dense. When the number of lithological transformations per unit length is greater than the preset number of lithological transformations, the lithological transformation frequency per unit length is determined to be high; otherwise, the lithological transformation frequency per unit length is determined to be low. When it is determined that the fault zones and folds are not dense within a unit area and the lithological transformation frequency is low within a unit length, the graphite mine is deemed suitable for open-pit mining.

4. The open-pit graphite mining method based on fine rock and mineral separation according to claim 3, characterized in that, When it is determined that the graphite mine is suitable for open-pit mining, the ore occurrence state is analyzed based on the morphology, continuity, and content of graphite to determine the ore distribution and mining difficulty, including: The mining difficulty is initially assessed based on the morphology of graphite, resulting in an initial assessment result. This assessment result represents the mining difficulty of the graphite mine. The mining difficulty is ranked from low to high as Level 1, Level 2, and Level 3. The initial assessment result is then adjusted based on the continuity of the graphite.

5. The open-pit graphite mining method based on fine rock and mineral separation according to claim 4, characterized in that, The continuity of a graphite ore body is determined based on its extension direction and thickness; among which, The main extension direction of the ore body is determined, and the standard deviation is calculated using statistical methods to quantify the stability of the extension direction. At the same time, the actual thickness data of the ore body is obtained, and the average thickness of the ore body is calculated. Preset the standard deviation and thickness preset values; The calculated standard deviation is compared with the preset standard deviation value, and the calculated average thickness is compared with the preset thickness value; the calculated standard deviation is denoted as a, and the preset standard deviation value is denoted as A; the calculated average thickness is denoted as b, and the preset thickness value is denoted as B; When a B, the continuity monitoring result of graphite is high. When a≥A or b≤B, the continuity monitoring result of graphite is low.

6. The open-pit graphite mining method based on fine rock and mineral separation according to claim 5, characterized in that, Based on the dip angle of the strata and the fault zones, the properties of the surrounding rock are analyzed to predict the risk level during the mining process, including: Based on the magnitude and variation of the rock strata dip angle, assess the risk of geological hazards during mining; at the same time, consider the distribution and scale of fault zones and analyze their impact on the stability of the surrounding rock. When the dip angle of the rock strata is greater than the preset safe dip angle value, or when the fault zones are dense and large in scale, the graphite mine is determined to be a high-risk area; otherwise, the graphite mine is determined to be a low-risk area. The criteria for determining whether the fault zones are dense and large in scale are that the number of fault zones per unit area is greater than the preset number of fault zones, the number of lithological transformations per unit length is greater than the preset number of lithological transformations, and the average size of the fault zones is greater than the preset size threshold.

7. The open-pit graphite mining method based on fine rock and mineral separation according to claim 6, characterized in that, The geological structure, ore occurrence, and surrounding rock properties of the graphite mine are analyzed. Based on the analysis results, it is determined whether the graphite mine is a mineable area, including: When the judgment results indicate that the graphite mine is suitable for open-pit mining, the mining difficulty of the graphite mine is level two or below, and the graphite mine is a low-risk area, the graphite mine is determined to be a mineable area.

8. The open-pit graphite mining method based on fine rock and mineral separation according to claim 1, characterized in that, The mixed ore is subjected to fine rock-mineral separation through gravity separation, magnetic separation, and flotation to separate graphite ore from the surrounding rock, including: The gravity separation is a process of separating mixed ores based on their density differences using gravity separation equipment, so that graphite ore is separated from the surrounding rock due to their different densities. The magnetic separation is based on the magnetic differences of the ore, and uses magnetic separation equipment to further separate the ore after gravity separation, separating magnetic impurity minerals from graphite ore. The flotation process involves using a flotation agent to separate the magnetically separated ore, thereby separating the graphite ore from the remaining surrounding rock due to differences in surface properties.

9. The open-pit graphite mining method based on fine rock and mineral separation according to claim 8, characterized in that, The preparation method of the flotation agent includes: Sodium oleate and sodium dodecyl sulfonate were mixed and dissolved in a solvent to obtain a preliminary solution of the flotation agent. Stir the initial solution to ensure that sodium oleate and sodium dodecyl sulfonate are thoroughly mixed. During the stirring process, alkaline substances are gradually added to adjust the pH value of the solution, so that the flotation agent can achieve the best flotation effect. The adjusted solution is filtered to remove impurities and particulate matter, resulting in a pure flotation agent. The obtained flotation agent is dried to obtain a solid flotation agent; The ratio of sodium oleate to sodium dodecyl sulfonate is 1:1, the solvent is deionized water, and the alkaline substance is sodium hydroxide. During the stirring process, the stirring speed is 200 revolutions per minute, and the stirring time is 30 minutes. When adjusting the pH value, the pH value is controlled between 9 and 11. During the filtration process, a 0.2-micron filter membrane is used to ensure the removal of all impurities and particulate matter. During the drying process, the flotation agent is placed in a constant temperature oven at at least 60°C and dried for at least 24 hours.

10. An open-pit graphite mining system based on fine rock-mineral separation, used to implement the open-pit graphite mining method based on fine rock-mineral separation as described in any one of claims 1-9, characterized in that, The open-pit graphite mining system based on fine rock and mineral separation includes: The mining exploration module is used to explore graphite mines and obtain the geological structure of the ore body, the occurrence state of the ore and the properties of the surrounding rock; The initial assessment module, based on information obtained from the mine exploration module, makes a preliminary assessment of the mining difficulty of the graphite mine; The continuity monitoring module is used to monitor the continuity of graphite and adjust the judgment results of the initial judgment module based on the monitoring results; The risk prediction module analyzes the properties of the surrounding rock based on the dip angle of the rock strata and the fault zones, and predicts the risk level during the mining process. The mineability assessment module determines whether a graphite mine is a mineable area based on its geological structure, ore occurrence, and surrounding rock properties. The rock-mineral separation module performs fine rock-mineral separation on mixed ores through gravity separation, magnetic separation and flotation to separate graphite ore from the surrounding rock; The rock and mineral separation module includes a gravity separation device, a magnetic separation device, and a flotation device, wherein the flotation device uses a flotation agent for flotation separation. The system control module is used to control the operation of each module and make comprehensive judgments based on the output results of each module to guide the mining process of graphite mines.

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