289 results about "Tailings dam" patented technology

The invention publishes a process to increase the bioleaching speed of ores or concentrates of sulfide metal species in heaps, tailing dams, dumps, or other on-site operations. The process is characterized by the continuous inoculation of the ores or concentrates with isolated microorganisms of the Acidithiobacillus thiooxidans type, together with isolated microorganisms of the Acidithiobacillus ferrooxidans type, with or without native microorganisms, in such a way that the total concentration of microorganisms in the continuous inoculation flow is of around 1×10⁷ cells/ml to 5,6×10⁷ cells/ml. In particular, the invention publishes the continuous inoculation of Acidithiobacillus thiooxidans Licanantay DSM 17318 together with Acidithiobacillus ferrooxidans Wenelen DSM 16786 microorganisms, or with other native microorganisms at a concentration higher than 5×10⁷ cells/ml. In addition to the inoculation of isolated bacteria, the invention includes the addition of oxidizing agents such as the ferric ion produced externally, together with nutrients in the shape of salts of ammonium, magnesium, iron, potassium, as well as air enriched continuously with carbon dioxide to promote bacterial action in the bioleaching process of ores or concentrates.

The invention discloses a model test device for simulating the instability failure of rock and soil slopes under complex conditions, and belongs to the technical fields of geotechnical engineering andmining engineering. The model test device comprises a wind and rain simulation system, an earthquake simulation system, a similar model test system and a monitoring system. Through the adoption of the device, similar model test of rock and soil slope bodies such as waste dumps and tailings dams can be carried out efficiently, and the stability and failure modes of the slope bodies under rainfall,earthquake and the coupling action thereof can be researched and analyzed.

The invention discloses a united draining system for effectively lowering seepage lines in a fill dam of a tailing reservoir, which comprises vertical draining wells, transverse draining blind ditches (2) parallel to a dam axis, as well as longitudinal draining pipes (3) perpendicular to the dam axis, wherein the transverse draining blind ditches (2) are provided with inversely trapezoidal sections, which are excavated on a tailings-deposited beach face away from a dam top by the designed distance are parallel to the dam axis, and sand gravels (4) are filled in the transverse draining blind ditches (2) after geotextile (4) is laid; the vertical draining wells are arranged at interval along the transverse draining blind ditches (2) , skeletons woven from bamboos or reinforcing mattresses or other materials with similar functions are externally wrapped with the geotextile (6) and internally filled with the sand gravels (4); and the joints of the vertical draining wells and the transverse draining blind ditches are connected to draining open ditches on a dam slope by the longitudinal draining pipes (3). A combined whole capable of draining through automatic flow is formed by adopting three-direction united drainage so that the united draining system can effectively lowers the seepage lines in the fill dam and ensure the safe running of the tailing dam.

The invention relates to a method for treating a soft soil foundation/mine tailings/lake sludge by means of booster vacuum preconsolidation, which belongs to a construction method for the soft soil foundation/the mine tailings/the lake sludge, wherein insides of a plurality of rows of plastic drainage plates which are horizontally distributed inside soil mass/the slag/the sludge are subjected to vacuum pumping, and partial soil mass/ partial slag/ partial sludge between the plastic drainage plates is subjected to uniform supercharging simultaneously. The method can really reflect the reinforcing mechanism and the reinforcing effect of vacuum precompression on cohesive soil, tailing dam slag and the lake sludge, improves the consolidation depth by one time, shortens half of the reinforcing time, has low manufacturing cost, and is safe and effective.

The invention discloses a simulation tester for similar damage of tailings dam bursting, which is provided with a simulation reservoir, and the dam of the simulation reservoir is connected with a simulation cleugh. The simulation tester for similar damage of tailings dam bursting is characterized in that the bottom of the simulation reservoir at the tail of the reservoir is provided with a jacking pushrod; the jacking pushrod is arranged on a hydraulic cylinder; the simulation cleugh consists of at least two grooves connected end to end in sequence; the neighboring grooves are connected by an adjustable joint; the dam of the simulation reservoir consists of a fixed bracket and at least one movable baffle. The simulation tester for similar damage of tailings dam bursting has the obvious effects of strong compatibility, simple structure, low cost, easy maintenance, and convenient operation, can simulate tailings reservoirs with different heights and volumes, and can all obtain the data like fluid state evolution characteristics of slurry out of the burst dam, the stress field and flow field distribution rules during the moving process of slurry, and the relationship of the alluvial fan scope of slurry and sedimentary thickness with the moving distance of slurry when facing to the grooves of the tailings dam with different bursting widths, directions and slopes.

The invention discloses an experiment device for simulating dam overtopping of a tailing dam under a rainfall action and an experiment method and belongs to the technical field of theories and experiments of the dam overtopping of the tailing dam under the rainfall action. By combining two aspects including a theoretical technology and a testing technology, a dam overtopping mechanism of the tailing dam is jointly disclosed. The experiment device comprises a water circulating and hydrostatic load applying system, a simulated rainfall system, a levelness control system and a simulated reservoir area system; when the simulated reservoir area system is used for simulating rainfall under a real field condition, a dam body attribute replacement body need to be replaced with a real material. By combining a differential hydrostatic pressure theory based on a water-crossing section shape and a similar experiment for simulating real rainfall conditions, the experiment device has the advantages of water saving and environment protection, low cost, convenience and flexibility in dynamic and static load application, flexibility of replacing the dam body attributes, high controllability and the like.

The invention relates to a solid-liquid separating device and a solid-liquid separating process with a filtering and air separating machine. The solid-liquid separating device consists of a sedimentation tank 1, a central hollow shaft 2, a filtering device 3, a swirl flow pressboard 4, a self-cleaning device 5, a stop plate 6, a slag guide device 7, an air separating device 8, a slag outlet 9, a limiting flat cone plate 10, a flow guide centrifugal device 11, a vacuum tube 12, a hollow shaft 13, a helical extrusion device 14 and a tailing inlet 15. The solid-liquid separating process with a filtering and air separating machine can greatly improve solid-liquid separation quality, discharge water molecules under the action of a high-pressure air flow, allow ultrafine particles to enter space between large particles, achieve close combined by extrusion, make the dewatering more complete and more cleanly, and greatly reduce the infection density of a tailing dam and project invention.

The invention discloses a dynamic monitoring system device for a tailing dam body by three-dimensional laser scanning. The dynamic monitoring system device mainly comprises a mechanical unit, a laser data acquisition unit, a control driving and feedback unit, and a communication and upper computer unit. In the device, the laser data acquisition unit is used for acquiring scene polar radius information of the surface of the tailing dam body; the control driving and feedback unit is used for driving the laser data acquisition unit to rotate in the horizontal dimension and vertical dimension, toscan the large scene on the surface of the tailing dam body at a constant speed and to acquire angle information in the horizontal dimension and the vertical dimension in real time; the communicationand upper computer unit is used for transmitting the acquired distance information and the acquired angle information to an upper computer through a high-speed data acquisition card; and software of the upper computer is used for processing the scene polar radius and the rotation angle information in the horizontal dimension and the vertical dimension to recover a real three-dimensional image of the scene, building a tailing dam body standard point cloud model in an ideal state, and storing the model into a database as an intelligent monitoring comparison template. During dynamic scanning of the device, qualitative and quantitative estimation for unexpected disasters is realized by using a dynamic monitoring algorithm through comparison with the template; operators and managers can immediately start corresponding emergency plans to avoid further expansion of the disasters.

The invention belongs to the technical field of scheelite flotation, and discloses a flotation process adopting a flotation column to regrading scheelite instead of a flotation machine, wherein, the flotation column technology is adopted in scheelite regrading after the scheelite is processed through rough concentration; rough concentrate is regraded repeatedly; well-chosen tailings are also processed through fine scavenging for a plurality of times by adopting the flotation column so as to obtain scheelite concentrate with high grade, that is, the rough concentrate is obtained after rough concentration; ore slurry that is concentrated is then processed through heating, reagent removal and size mixing, so that the ore slurry can enter the flotation column for fine roughing when the contraction of the ore slurry ranges from 20 to 30 percent; foam products obtained in the fine roughing enter a regrading area comprising at least one flotation column and are regraded once or repeatedly, so as to obtain high-grade scheelite concentrate; and the tailings obtained in the fine roughing enter a fine scavenging area, and the tailings that are processed through fine scavenging are conveyed to a tailing dam or return for scheelite roughing. The flotation process can obtain scheelite concentrate with higher grade, the operation energy consumption of the flotation column is low, the mineral dressing index is increased, the labor environment can be improved, the labor intensity is reduced, and smoother production can be ensured.

The invention discloses a dry heaping and wet discharging combined tailing heaping and discharging method. Tailing slurries are discharged from a dressing plant (10), part of the tailing slurries enter a pressing and filtering dehydration workshop (9) to be dehydrated and filtered, dry tailings are used for piling up a dry tailing dam (5), the left tailing slurries are transferred to the inner side of the top of the dry tailing dam (5) to be discharged into a tailing bank, and wet tailings (2) are deposited on the upstream slope of the dry tailing dam (5); at the beginning of the formation of the dry tailing dam (5), a cofferdam (4) used for blocking the wet tailings (2) and floods is arranged on the inner side of the bottom of the dry tailing dam (5); a horizontal water discharging member (6') between the bottom of the dry tailing dam (5) and a dam base (7), and a prismatic water discharging member (6) is arranged at the downstream slope toe of the dry tailing dam (5). By the method of heaping and discharging granule tailings, the problem of difficulty in piling up the dam with the granule tailings can be solved, mine construction speed can be increased, tailing tank investment and operation cost are reduced, and economic benefits of the mine are improved.

The invention discloses a eliminating outcrop water method of tailing dam and it includes the following steps: drilling hole: drilling hole as required depth, angle and direction in the tailing dam to forming the pore path leading to the top of the dam from the lower; pulling the tubes: pulling the specially-produced drainage pipes into the pore path drilled in the tailing dam; decortication: taking off the outer layer of protective layer of drainage pipes. The specially-produced drainage pipes of the method comprise of the body pipe, the gauze and the protective layer which are prepared out the body pipe one by one, said body pipe is equipped with percolating water groove along the axial center direction of pipe body uniformly and the bottom of percolating water groove is equipped with percolating water holes which reach the inner of pipe body discontinuously. The invention is facilitating to construction, the effect of drainage is fine and it is good for eliminating the hidden danger of the tailings dam is in danger, cave-in collapse and breaking.

The invention relates to a dehydration method and a dehydration device of tailings. The dehydration device mainly comprises a cyclone, a thickener, a vacuum belt filter and a sedimentation basin. A tailing slurry discharged from an ore dressing workshop go through the cyclone, the thickener and the vacuum belt filter in order to form dry materials which are placed in a stock dump. And a flocculating agent adding system is installed between the thickener and the vacuum belt filter. The sedimentation basin is connected to a collection basin used for collecting the clear water overflowing from the sedimentation basin, and then the clear water come into the ore dressing workshop for recycling. With the dehydration method and dehydration device of tailings, risks from dehydration with a tailing dam can be eliminated, so that accidents are effectively avoided. Meanwhile, the device of the invention has low investment, low running cost and high dehydration rate.

The invention relates to an experiment device and an experiment method for overtopping failure simulation for a tailing dam, which belong to the field of mine geotechnical engineering. The experiment device disclosed by the invention comprises a simulated experiment container, a simulated rainfall device and a gradient change device, wherein the simulated rainfall device is installed above the simulated experiment container. The experiment device disclosed by the invention is capable of simulating the overtopping failure conditions for the tailing dam under different rainfall intensities and different tailing dam slope angles.

The invention belongs to the technical field of slurry pump and discloses a slurry pump exclusively for bauxite ore washing tailing slurry dry method processing and processing system and method thereof. The slurry pump is substantially characterized in that the slurry pump includes a fuel tank which is provided with driving motors and fuel pumps, electromagnetic directional valves are arranged on the fuel tank, an electromagnetic directional valve is connected with a ceramic plunger pump unit, a pump cylinder body of a pump individual is provided with a ceramic plunger, the ceramic plunger with a carriage on the top is connected with a cylinder piston of a hydraulic cylinder through a transmission rod, a vortex board is arranged on the carriage on the top of the ceramic plunger, and proximity switches which match with the vortex board and are connected with the electromagnetic directional valve are arranged on a upper beam of a the hydraulic cylinder base and on a lower beam which is on the upper portion of the pump cylinder body. According to the slurry pump, sealing effects are good, slurry can pass through a miter valve smoothly and no sand are retained, an electromagnetic directional mechanism enables a plunger pump and a fuel supply station to be installed in a spit mode, remote control of the fuel supply station and pumps are achieved, large flow delivery of pumps are achieved, bauxite ore washing tailing slurries can be processed with no tailing dam construction required, and dry method processing and exhausting is achieved.

The invention provides a tailing dam damming method, which includes: a, producing coarse sand for damming by utilizing a cyclone to screen original tailing pulp; b, discharging and stacking screened coarse sand at the damming position naturally, screening for 2 to 4 days, stopping screening for 1 to 2 days when the coarse sand cannot be discharged and stacked naturally, discharging original tailing pulp into a tailing pond, dewatering deposited coarse sand naturally until the water content of the coarse sand for damming is smaller than 20%; c, constructing a coffer at the damming position and enclosing a space for stacking coarse sand continuously, repeating classification-dewatering-coffer constructing for 6 to 10 times and damming a dam section; d, repeating the above steps, performing slope protection for an inner slope and an outer slope so that the gradient of the outer slope of the tailing dam is controlled by 1:3 integrally and further completing the first-stage damming of the dam body; and e, damming the next-stage dam body by raising the center axis of the dam body of the first stage. The tailing dam damming method has the advantages that the height of the dam body can be increased greatly at one time, safety technical conditions of the tailing pond can be enhanced, and damming quantity and cost can be reduced.

The invention discloses a method for calculating the length of the dry sand of a tailings reservoir based on image recognition, which comprises the following steps: binarizing a dry sand image of the tailings reservoir through image recognition technology so that the dry sand image is more simple, a data size is reduced and the outlines of a dam body of a tailings dam and the dry sand are shown; processing and analyzing the binarized dry sand image and utilizing pixel detection technology to calculate and analyze the height of the dry sand to further analyze accurate required data results; and finally utilizing the recognized height of the dry sand and a slope to calculate the length of the dry sand of the tailings reservoir. In the method, the image recognition technology is utilized to accurately divide the dry sand image of the tailings reservoir; data obtained by analysis and calculation is accurate; the accuracy of the calculated length of the dry sand is relatively higher and real-time property is relatively stronger; and the requirements of the online and real-time monitoring of the length of the dry sand of the tailings reservoir are met.

The invention relates to a real time monitoring data-based mine tailing dam instability risk evaluating method and belongs to the technical field of special-purpose digital computation or data processing methods. The method helps overcome defects of technologies of prior art that cannot be applied to determining magnitude of dam slope instability risk, risk sources and the like. According to the real time monitoring data-based mine tailing dam instability risk evaluating method, based on a condition that monitoring data is obtained and a representative instability mode is determined; failure probability and slide area of all instability modes are used for determining instability risk thereof, mine tailing dam instability risk can therefore be quantified, mine tailing dam instability risk can be evaluated mostly based on the monitoring data, mode grouping is realized and the representative instability mode is selected according to correlation of anti-sliding stability safety factors of shallow-layer and deep-layer instability modes, and frequency and a glide plane of the representative instability mode which is regarded as an instability mode with maximum danger are used for evaluating risk in a quantified manner. The real time monitoring data-based mine tailing dam instability risk evaluating method is characterized by scientific property, visual property, reasonability and feasibility; scientific basis is provided for mine tailing dam operation safety management and risk control.

The invention discloses a method for reinforcing a tailings accumulation dam with an end scroll type geogrid. The steps are: (1) laying a layer of geogrid on the surface of the sub-dam and dry beach; (2) laying a layer of geogrid on the surface of the geogrid Place the hollow tubes at both ends, then roll up the two ends of the geogrid and wrap the corresponding hollow tubes to form a reel, and then fasten the tendons of the reel one by one with iron wire; (3) carry out the dam Put ore in front to form a tailings accumulation dam; (4) Repeat the steps (1)-(3), laying up layer by layer until reaching the overall height of the tailings dam. The invention increases the reinforcement force, can effectively prevent the geogrid from being pulled out, enhances the stability of the tailings dam body, improves the underground seepage field of the tailings dam, and effectively solves the problem of high tailings accumulation dams faced by mining enterprises. While simplifying the construction plan, the cost is greatly reduced, and it is more suitable for large and medium-sized tailings ponds, earthquake areas or other harsh conditions.