44 results about "Metal mining" patented technology

The invention discloses a metal-mining-area soil-water interface heavy metal pollution load forecasting method. The metal-mining-area soil-water interface heavy metal pollution load forecasting method mainly comprises the following steps of sample collection and pre-processing, sample detection, data processing, building of a GIS database, building of a metal-mining-area soil-water interface heavy metal migration and transformation kinetic model, and building, verification and optimization of a forecasting model method. The fitting degree of the forecasting method with a measured value of an actual load can meet the requirement for forecasting precision, and therefore theoretical foundations and scientific bases are provided for evaluation, controlling, treatment, restoration and the like of ecological risks of metal-mining-area heavy metal pollution.

To provide a positive electrode active material for a non-aqueous electrolyte secondary battery, which if used as a positive electrode for a lithium ion secondary battery, the battery internal resistance can be reduced, giving a secondary battery superior in output characteristics and life property. After mixing raw material powders in specified quantities of each so as to become a lithium-metal complex oxide represented by Li z Ni 1-w M w O 2 (wherein M is at least one kind or more of metal elements selected from the group consisting of Co, Al, Mg, Mn, Ti, Fe, Cu, Zn, and Ga; and w and z respectively satisfy 0 H01M 4 / 02 H01M 4 / 36 H01M 4 / 04 1 29 3 2007 / 3 / 23 101047237 2007 / 10 / 3 000000000 Sumitomo Metal Mining Co. Japan Oda Syuuhei Kuzuo Ryuichi Ueki Tomoyoshi Suzuki Satoru Yamada Manabu gaolong xin 72003 Japan 2006 / 3 / 23 2006-080375

The invention is embodied in a diesel system for reducing particulate matter emissions in off-road vehicles, coal mining and metal / non-metal mining operations, comprising, in combination, a supply of highly paraffinic diesel fuel having a high Cetane rating and substantially no sulfur, aromatics and nitrogen content and being formulated to greatly reduce PM output levels from the engine relative to conventional diesel fuels, The invention is further embodied in the method of reducing diesel emission contaminants including providing a supply of highly paraffinic diesel fuel having a negligible sulfur, aromatics or nitrogen content, and a high Cetane number, and other apparatus useful for filtering engine emissions before discharge to ambient.

The invention belongs to the technical field of uranium mines, and particularly discloses a method for quickly judging whether a black rock series has uranium-free multi-metal mining value or not. Themethod comprises the steps of: step 1, acquiring a black rock series sample acquisition; step 2, measuring P2O5 content, V, Ni, Cu and Zn element content and the U-Pb isotopic age of black rock series samples acquired in the step 1; 3, judging the phosphorus content of the black rock series sample; 4, judging mineralization elements of the black rock series sample; step 5, and judging the whole rock age of the black rock series sample so as to judge whether the black rock series in the sample collection area has a mining value or not. By means of the method, whether the black rock series of the target area or not can be rapidly judged, so that the prospecting efficiency in the black rock series is improved, and time and capital cost are saved.

The invention belongs to the technical field of safety production in mines, and relates to a goaf roof-falling danger critical degree prejudgment method. The goaf roof-falling danger critical degree prejudgment method comprises the steps of firstly building a control index system of roof-falling danger of the goaf; dividing the roof-falling danger into four states, including, accident, hidden danger, crisis and safety; then obtaining main control indexes by using gray similar correlation based on the specific mining information and different geological data; building an optimal goaf roof-falling danger ultimate learning machine model through learning and training; and composing the data of the to-be-measured goaf roof-falling danger main control indexes into an input to obtain a goaf roof-falling danger level, thereby realizing the goaf roof-falling danger critical degree prejudgment. The goaf danger critical degree prejudgment method gives comprehensive consideration to the influence from each parameters of the mine mining information and the mineral geological data to the roof-falling danger and the correlation therebetween, guarantees scientific and reliable selection of control parameters, and provides judgment basis and reference for identification and prediction of the overall safety of the goaf of metal mining and the goaf stoped by coal mine workers.

The invention relates to mineral processing and can be used for the metal mining, coal and other industries. The inventive device comprises two movable trays which are pivotally connected to each other and actuated by a specially constructed shaft. The positive motion of the trays makes it possible to obtain a uniform pulse distribution, thereby preconditioning the stimulation of mineral processing. In addition, said invention substantially reduces energy consumption for mineral processing, simplifies the structural design of the device, and significantly increases the reliability thereof. The test of the pilot device displayed good technical results of mineral processing and confirmed the high reliability and operability of said easy producible device.

The invention belongs to the technical field of metal mining, and discloses a mechanical continuous mining method for hard rock. The mechanical continuous mining method comprises the steps of separating room strips from pillar strips, which are arranged at intervals, in a panel in the direction of an ore body; arranging a scraper crossheading at the bottom of a stope along the strike, tunneling anair return drift at the top of the stope, and respectively tunneling false-inclined pedestrian and equipment rises at two ends of the ore body to enable an upper stage to communicate with a lower stage; mining the room strip ore body by a tunneling machine along the strike from top to bottom and according to a zigzag line push stoping sequence, and leaving the pillar strip ore body not be processed temporarily; partially stoping the pillar strip ore body by a short-hole drill jumbo, and allowing the pillar strip ore body which is not stoped to form point pillars; and reinforcing a roof depending on the stable condition of the roof with the proceeding of stopping. Compared with a traditional semi-artificial and interrupt comprehensive method or room-and-pillar method, the mechanical continuous mining method has the advantages of large production capability, low production cost and high safety, and mechanical continuous mining of a gently-inclined thin ore body is achieved.

The invention discloses mixed explosive containing powder grains, in order to solve a problem of low detonation velocity and a problem that a detonator cannot be detonated in the prior art. The mixed explosive is prepared by comprising a component A, sodium thiosulfate and potassium dichromate, wherein the component A is prepared from the following components in percentage by weight: 6.5-7.5% of water, 0.5-1% of polyacrylamide, 5-10% of urea, 9-15% of ammonium nitrate, 3-7% of sodium nitrate and 60-70% of powder grains; quality of the sodium thiosulfate is 0.02-0.03% of content of the component A; and the quality of the potassium dichromate is 0.01-0.02% of the content of the component A. The mixed explosive is high in detonation velocity; the detonation velocity can be up to 6668m / s; the mixed explosive can be directly detonated by a detonator, and the mixed explosive is mainly used for rock mining, metal mining and the like.

The invention provides a method for preparing a mine cemented filling material by mineralizing CO2 from labor / mining industry solid waste. The method comprises the following steps: grinding the labor / mining industry solid waste, and uniformly mixing the ground labor / mining industry solid waste with ammonium nitrate; placing the mixed raw material in a reactor for molten salt activation, collecting ammonia gas generated in the activation process, and converting Ca, Mg and Al in the activated raw material into corresponding metal nitrate; the metal nitrate activated mixture is subjected to water leaching treatment, and water leaching residues with the main component being SiO2 and water leaching liquid rich in Ca < 2 + >, Mg < 2 + > and Al < 3 + > are obtained through filtering; introducing the collected ammonia gas, the obtained water immersion liquid and CO2 prepared in advance into a reaction container to carry out carbonation reaction, and filtering to obtain filtrate containing ammonium nitrate and mineralized slag with main phases of CaCO3, MgCO3 and Al2 (CO3) 3; mixing the mineralized slag with cement and gypsum to prepare a cementing material; and mixing and stirring the cementing material, water and full tailings to prepare the cemented filling material. According to the method, CO2 mineralization sequestration and geological sequestration technologies are organically fused, and upgrading and transformation of metal mining under the dual-carbon strategy are achieved.

The invention discloses a screening device used in metal mining for collecting metal ore, comprising a first tank, a base, a second tank and a third tank. Universal wheels are mounted at four cornersof the bottom end of the base; a shock absorbing layer is arranged inside the base; the first tank is mounted on one side of the top end of the base; first sliding rails are mounted on both sides of the inner bottom end of the first tank; first drawers are disposed above the first sliding rails; first sliding blocks that cooperates with the first sliding rails are mounted on both sides of the bottom ends of the first drawers; a wind cylinder is mounted on the top end of the inner side of the first tank, and a centrifugal fan is mounted inside the wind cylinder; the output end of the controlleris electrically connected to the input end of the second drive motor via a wire. The screening device used in metal mining for collecting metal ore fixes a guiding barrel between one side of the bottom end of the third tank and one side of the second tank, and mounts a vibration motor on the bottom end of the guiding barrel to increase the guiding rate and prevent clogging.

The invention discloses a method for reducing heavy metal pollution diffusion of soil around a mine, and belongs to the technical field of heavy metal pollution treatment around the mine. The method is implemented in a gentle slope zone between a non-ferrous metal mining area or a tailing pond and a surrounding farmland. Arbor, shrub and herbaceous plants resistant to heavy metals are reasonably matched and planted to construct an ecological isolation belt based on natural vegetation, so migration of various heavy metals in the environment is reduced, ecological landscapes around a mining areacan be improved, soil is stabilized, heavy metal diffusion is controlled, the surrounding farmland soil environment quality and grain safety are guaranteed, and the threat of pollution to human health is reduced.

The invention discloses a method for handling metal tailing slag, and belongs to the technical field of handling and using the metal tailing slag in the mining industry. According to the technical scheme, the method for handling the metal tailing slag includes the following steps that the metal tailing slag generated in the production process of the metal mining industry is collected and pre-handled, large particles and impurities are removed, and precious metal contained in the metal tailing slag is extracted again through a series of new precious metal extraction process techniques and special-purpose equipment; meanwhile, mineral powder collected by blast capacity proportion separation of products in the precious metal extraction technique process is used as cement production clinker for producing cement. Compared with the prior art, the method has the prominent substantive advantages and remarkable progress that various valuable components in the metal tailing slag are reliably extracted, the utilization rate of mineral resources is increased, the industrial chain is prolonged, the economic benefits of enterprises are increased, and benefits are brought to people and the society.

The invention discloses a magnetic dust suppressant. The magnetic dust suppressant comprises 0.5-1wt% of a hydrogel type high-molecular polymer, 0.5-1wt% of epoxy resin, 0.2-0.5wt% of acetamide, 0.05-0.1wt% of sodium stearate, 5-10wt% of magnetic nano-particles and 87.4-93.75wt% of deionized water, and the magnetic nanoparticles are added to make the dust suppressant have strong metal mining powder adsorption ability and keep a long-time stable effect. A nonwoven fabric is laid on the surface of a road, so a dust suppressant film on the surface of the road is protected, and the contact area of the surface of the nonwoven fabric and dusts is increased, thereby the dust suppression effect is further improved.

The invention belongs to the technical field of slope reinforcement of open-pit mining in metal mining, in particular to a novel wedge seam type anchor structure. The novel wedge seam type anchor structure comprises an anchor rod, a wedge seam, a base plate and a nut, and is characterized in that the front end of the anchor head of the anchor rod with the wedge seam is designed to be a cone, the diameter of the large end of the cone is more than the diameter of the anchor rod, and the diameter of the small end of the cone is equal to the diameter of the anchor rod. The novel wedge seam type anchor structure has the advantages that: in the invention, the shape of the front end of the anchor head of the wedge seam type anchor rod is changed to be the cone instead of original cylinder, therefore, after the wedge seam type anchor rod is anchored, the stress state of hole wall rock under the effect of front end part of the anchor head is changed to be surface contact stress from point contact stress, a wedge is inserted into the wedge seam, the breaking of the rock hole wall of the wedge seam after being extruded caused by concentrated stress is obviously lightened, and the anchoring effect is obviously enhanced.

The invention relates to the technical field of operation efficiency evaluation methods, in particular to an evaluation method for influence factors of high-altitude and high-cold metal mining air drill operation efficiency, which comprises the following steps of: firstly, acquiring 17 index data in three aspects of personnel factors, equipment factors and environmental factors, and standardizingthe acquired index data; determining an index weight by using an entropy weight method, and generating a weighted normalization matrix; and extracting principal components by adopting a principal component analysis method, solving the comprehensive score of the principal components of each subsystem of the evaluation sample to obtain a final evaluation basis, and obtaining an index evaluation result. According to the method, the evaluation indexes influencing the man-machine efficacy are extracted by performing system analysis on the cooperative relationship between the high-altitude mine airdrill operation personnel and the operation machine and the operation environment and the specific and mutually restricted design variables. An entropy weight method is introduced into principal component analysis and evaluation, a PCA evaluation model fused with the entropy weight method is constructed, and a new method is provided for existing evaluation practice.

The invention discloses a line arrester installation site selection method that comprises the following steps of: 1) determining the tower coordinates of a line and importing the tower coordinates of the line into a map; 2) determining candidate installation sites on the map; 3) for respective candidate installation sites, acquiring the evaluated values of corresponding respective lightning damage factors, wherein the respective lightning damage factors include a span length L1, a historical lightning stroke point L2, a river or valley L3, a metal mining area L4, a slope L5, an elevation difference L6, altitude L7, ground stroke density L8, transformer station inlet line within 2 km L9, and summing the values of respective lightning damage factors to obtain a weight factor summation K; 4) selecting a candidate installation site as a final arrester installation site according to the weight factor summation K. The method can not only improve the quality of site selection and reduce randomness due to different quality of personnel, but also can greatly reduce the labor intensity of operators.

The invention discloses a forward-type fully automatic controllable variable-diameter pressure-relief connecting rod drill device and a use method thereof, which relate to the field of large-diameter drilling pressure-relief in coal mining or metal mining. It includes a drilling bit, a pressure relief connecting rod, and a connecting rod end. The pressure relief connecting rod includes a pressure relief connecting rod main body, an expanding cutting head, a fixed cutter head, a supporting expanding diameter rod, a sliding connection wedge, a trigger piston, a spring, Sliding fixed plate, limiter; expansion cutting head, fixed cutter head and supporting expansion rod are connected to each other, and the reciprocating movement of each part in the track under the action of water pressure / air pressure is realized by triggering the piston, and then the diameter expansion is realized Extension and retraction of the cutting head. The invention effectively realizes automatic diameter change, controllable hole expansion diameter, and powder discharge in the whole process of drilling. The damage of the surrounding rock at a certain depth on the surface can also improve the construction efficiency.

The invention discloses a storage device having a screening function and for metal mining industry. The storage device comprises a first diversion plate, a main body, an ultrasonic wave generator andan eccentric wheel, a second shell is mounted in the middle of the bottom of each of two ends of the main body, a driving motor is mounted inside each second shell, the ultrasonic wave generator is mounted at the top of one end of the main body, the output end of the ultrasonic wave generator is communicated with the inside of the main body through a connection pipe, a storage groove is mounted inthe middle of the bottom end inside the main body, a first shell is mounted on each of two sides of the bottom end inside the main body, and a spindle is mounted in the middle inside each first sell.By arranging a tenon block, a mortise, a mounting plate and a screening plate, the device is convenient for selecting the screening plate with screen holes different in size at proper time accordingto screening requirements of a user, so that applicability of the device is improved, and convenience is brought to meeting different screening requirements of the user.

The invention relates to a non-metal mining high-temperature hot-pressing pump pickling device which comprises a tank body (1) and is characterized in that a heat exchange groove (2) and a heat preservation layer (3) are sequentially arranged on the outer side of the tank body (1) in a sleeved mode, a pump body I (4), a set of pump bodies II (5) and a pump body III (6) are arranged, and feeding pipes and discharging pipes of the pump body I (4), the pump bodies II (5) and the pump body III (6) are all communicated with the tank body (1). The feed pipes of the pump body I (4), the pump body II (5) and the pump body III (6) are communicated with branch pipes (8) through tee joints (7); and each branch pipe (8) is provided with a control valve (9) which is correspondingly matched with the branch pipe (8). The continuous scrubbing and leaching device is simple in structure and convenient to use, continuous scrubbing and leaching are conducted in the heating and pressurizing environment and in the turbulent flow state, the leaching efficiency is improved while large-scale production can be achieved, generated acid mist, steam and the like can be discharged in an organized mode and purified in a centralized mode, and the production efficiency is improved.

The invention provides a floating type backwater pumping station, and relates to the technical field of tailings pond backwater pumping stations. The technical problem existing in the prior art that afloating pumping station is difficult to use due to ice on the water surface of a tailings pond is solved. The floating type backwater pumping station comprises a floating device and a water flow driving device, wherein the floating device is connected with the water flow driving device, the floating device can float on the water surface of the tailings pond, and the water flow driving device extends into the water surface of the tailings pond and can drive the water near the floating device to flow. The floating type backwater pumping station is suitable for tailings ponds in high and cold areas of metal mining industries.

The invention discloses a quantitative research method for changes of heavy metals in soil around a mining area along with natural factors. Soil heavy metals in a China typical non-ferrous metal mining area buffer area range are used as research objects; the spatial statistics method is adopted, the distribution characteristics and migration rules of a series of natural factors of mining area soilheavy metals along with terrains (altitude and gradient), wind directions and rivers are analyzed; then discussion is conducted on arrangement of sampling lines, the change rule of heavy metal at thehigh altitude and the difference between upwind and downwind directions and upwind direction heavy metal concentrations, and a research result provides a scientific basis for comprehensive prevention, control and remediation of heavy metal pollution of surrounding soil.

The invention relates to a tailings straw light wall brick, which contains the following constituents in parts by weight: 10-15 parts of straw powder with diameter of not more than 1mm, 40-50 parts of tailings sand, 30-35 parts of portland cement, 1-2 parts of acrylic resin and 1-2 parts of trisodium phosphate chlorinated. The light wall brick is formed by the following steps of: uniformly mixing the constituents in parts by weight to form solid mixture; preparing 2-3 parts of water reducing agent into solution, adding to the solid mixture for fully stirring, and gradually adding water in stirring process to form paste; extrusion forming and de-molding by a brick making machine; and drying. The straw powder used by the invention is renewable resource, and an effective way can be provided for solving the problems on tailings space occupation, environment pollution and the like resulted from metal mining process by using the tailing sand; and the wall brick is convenient in practical use and stable in quality, and can ensure building construction requirements and comply with concept of circular economy.

The invention discloses a deep blasting failure area shape prediction method based on an ADABOOST integration algorithm, and the method comprises the following steps: 1, collecting laboratory simulation real scene record data, carrying out the correlation analysis, and finding out main influence factors; 2, segmenting the data; 3, reprocessing the data; 4, segmenting the data; 5, training the data; 6, comparing the trained data with real data; and 7, evaluating a result. The invention belongs to the technical field of engineering blasting of metal mining, provides the deep blasting failure area shape prediction method based on the ADABOOST integration algorithm, and effectively solves the problems that in the prior art, blasting failure area shape prediction needs a large amount of development cost and needs a large amount of funds to purchase corresponding services, and the cost performance is low. The method shows that the machine learning method has practical reference value in the field of engineering blasting, the prediction result has theoretical significance, and the method is a prediction method capable of reducing development cost.

The present invention relates to the technical field of operation efficiency evaluation methods, and is an evaluation method for factors affecting the operation efficiency of pneumatic drilling in high-altitude alpine metal ore mining. It first collects 17 index data in three aspects: personnel factors, equipment factors and environmental factors, and analyzes all the Collect index data for standardized processing; then use the entropy weight method to determine the weight of the index to generate a weighted normalization matrix; use the principal component analysis method to extract the principal components, and solve the comprehensive score of the principal components of each subsystem of the evaluation sample to obtain the final evaluation basis. And obtain the index evaluation results. The present invention extracts evaluation indicators that affect man-machine efficiency by systematically analyzing the collaborative relationship between operators, operating machines, and operating environments in high-altitude mine pneumatic drilling operations, as well as unique and mutually restrictive design variables. It introduces the entropy weight method into the principal component analysis and evaluation, builds the PCA evaluation model integrating the entropy weight method, and provides a new method for the existing evaluation practice.

The invention discloses a variable diameter pyramid-type drilling powder discharge and pressure relief device, and belongs to the field of coal mining or metal mining drilling pressure relief. The device comprises a pressure relief connecting rod and a powder discharge and pressure relief drill bit; the powder discharge and pressure relief drill bit is installed at the front end of the pressure relief connecting rod, and the tail end of the pressure relief connecting rod is connected with a drill pipe; the powder discharge and pressure relief drill bit comprises a crushing exhaust pick portion, a detachable pick portion and a spiral powder discharge end cover portion which are connected from front to back in sequence; the crushing exhaust pick portion comprises a crushing exhaust pick mainbody, and axial crushing teeth, a radial pick I and a gas port, and the detachable pick portion is formed by connecting a plurality of groups of detachable pick monomers in sequence; the pick monomers are arranged in a triangular prism form to facilitate powder discharge, and the spiral powder discharge end cover portion comprises a spiral powder discharge end cover main body; and a spiral powderdischarge groove and a gas inlet are formed in the spiral powder discharge end cover main body. According to the device, quick powder discharge and quick drilling can be achieved under the effect ofhigh pressure gas at a target area in the drilling process.

The invention discloses a variable pyramid type drilling powder discharging and pressure relieving method, and belongs to the field of drilling pressure relieving for coal mining or metal mining. Thevariable pyramid type drilling powder discharging and pressure relieving method is performed through a pressure relieving connecting rod and a powder discharging and pressure relieving drill bit, wherein the powder discharging and pressure relieving drill bit is mounted at the front end of the pressure relieving connecting rod, the tail end of the pressure relieving connecting rod is connected with a drill rod, and the powder discharging and pressure relieving drill bit comprises a crushing and exhausting cutting tooth part, a detachable cutting tooth part and a spiral powder discharging end cover part which are sequentially connected from front to back; the crushing exhaust cutting tooth part comprises a crushing and exhausting cutting tooth body, an axial crushing tooth, a radial cuttingtooth I and an air guide hole are respectively arranged on the crushing and exhausting cutting tooth body, and the detachable cutting tooth part is formed by sequentially connecting a plurality of groups of detachable cutting tooth single bodies which are arranged in the pyramid shape to be favorable for powder discharging; and the spiral powder discharging end cover part comprises a spiral powder discharging end cover body, and a spiral powder discharging groove and an air inlet hole are formed in the spiral powder discharging end cover body. Under the action of high-pressure gas, rapid powder discharging and rapid drilling can be achieved in a target area in the drilling process.