317 results about "Gold ore" patented technology

The invention relates to the technical field of mining industry, and discloses an intelligent prediction method for gold ore beneficiation process parameters based on cloud and edge fusion, which realizes space-time correlation modeling of beneficiation process parameters and accurately depicts dynamic interaction influence among equipment. The cloud edge collaborative architecture considers global optimization and real-time response requirements, and the prediction stability under complex working conditions is effectively improved. The introduction of physical constraints enhances the applicability of the model in an actual production environment, a bidirectional feedback mechanism ensures the adaptive ability of the system in a dynamic change environment, and through the joint reasoning of a knowledge graph and a neural network, the consistency of a prediction result and a process principle is enhanced, and the risk of misjudgment under an abnormal working condition is reduced; the man-machine cooperation mechanism significantly improves the labeling efficiency of high-value samples, shortens the model iteration period, and ensures the continuous optimization capability of the prediction system in the actual production environment.

The invention discloses a surface mine digital safety production management method and device and a medium, and relates to the technical field of intelligent mines, and the method comprises the steps: collecting rock mass physical and mechanical parameters of a gold mine mining area and three-dimensional geometric morphology data of a blasting working face, and taking the parameters as physical constraint conditions to construct a digital twinborn body; a preset target blasting scheme is called to be input into the element reinforcement learning agent, multi-round simulation deduction is carried out through a blasting scheme evaluation strategy, and a simulation deduction result is generated; when the peak particle vibration velocity in the simulation deduction result exceeds a preset peak particle vibration velocity threshold value, generating a parameter adjustment suggestion; and the parameter adjustment suggestion is fed back to the element reinforcement learning agent for iterative optimization until the peak particle vibration velocity does not exceed a preset peak particle vibration velocity threshold, and a blasting scheme is generated. Through autonomous exploration of the meta-reinforcement learning agent in the blasting parameter space, the blasting scheme evaluation strategy with adaptability and reliability can be efficiently generated.

The invention belongs to the technical field of nondestructive testing, and discloses a gold ore and iron ore metal content detection method. The method comprises the following steps: acquiring an XRF energy spectrum by using an X-ray tube, acquiring an LIBS spectrum by using double-pulse Nd: YAG laser, and acquiring a Raman spectrum by using a semiconductor laser; performing baseline correction on the LIBS spectrum, performing Savitzky-Golay smoothing pretreatment on the Raman spectrum, and respectively extracting three types of spectrum characteristics; constructing a physical constraint network model, inputting XRF, LIBS and Raman features, and then outputting the correction content, fusion weight and LIBS dominant factors of Fe / Au elements; and finally, through a dynamic weight fusion strategy, combining XRF, LIBS fusion weights and network output parameters, calculating to obtain the content of the gold ore and the content of the iron ore. The technical breakthrough of multi-element cooperative detection and complex matrix interference suppression is realized, and the detection precision of Fe and Au is effectively improved.

The invention provides a dump leaching method for improving the leaching rate of gold ore, and belongs to the technical field of mineral processing. The method comprises the following steps: firstly, separating minerals into oversize products and undersize products; mixing sodium carboxymethyl cellulose, bentonite and ferrous sulfate to obtain a mixture, and granulating the undersize product by using the mixture as a binder; and mixing the undersize product particles with the oversize product, and carrying out cyanide-free dump leaching. According to the method, through graded granulation and heap building, the problem that heap building permeability is poor due to the fact that the gold ore contains many clay minerals is solved. In the granulation stage, ferrous hydroxide colloid generated by hydrolysis of ferrous sulfate in the binder can assist ore particle agglomeration, and particle stability is enhanced; during subsequent cyanide-free dump leaching, ferrous sulfate can be used as an auxiliary reducing agent and a catalyst in a thiourea gold leaching system to promote oxidation and dissolution of gold; meanwhile, ferrous ions can adjust the oxidation-reduction potential of a system, so that the thiourea gold leaching reaction is in a more favorable potential interval, the oxidation efficiency of thiourea is improved, invalid decomposition of thiourea is reduced, and therefore the use amount of thiourea and the use amount of agents are reduced.

The invention discloses a special grinding aid for gold ore and a preparation method thereof, and belongs to the technical field of mineral processing, the special grinding aid for gold ore comprises the following raw materials: a monomer, an initiator, a chain transfer agent and a solvent; the monomers are an unsaturated polyether monomer A and an unsaturated carboxylic acid monomer B; or a monomer C containing an ethylenically unsaturated sulfonic acid group. The preparation method comprises the following steps: putting the raw materials into a water bath kettle, and polymerizing in a separate dropwise adding manner to prepare the special grinding aid for the gold ore. The prepared grinding aid can improve the problems of particle agglomeration, low fine grinding efficiency, low gold dissociation efficiency and the like in the gold ore grinding process, the concentrated utilization of the grinding aid limited in the fields of cement, ceramics and the like is improved, the grinding energy consumption can be reduced, and the material quality can be improved.

The invention provides a method for measuring the oxidation rate of gold ore, and belongs to the technical field of process mineralogy. According to the method, the proportion of the unoxidized part (metal sulfide and crack) of the gold edge is obtained by measuring the contact length of the gold and the gold edge contact mineral, and the oxidation degree (the proportion of metal oxide and other gangue minerals) of the gold ore is obtained through conversion. Compared with traditional pretreatment modes such as crushing, ore grinding and ore dressing, the scheme does not destroy the original state of gold, and the test result is more accurate. Besides, the content proportion is represented by the proportion of the contact length of the edge contact mineral of the gold mineral and the gold, compared with the proportion of the test area, the error caused by the overlarge exposure area of the large-particle gold mineral can be weakened, the test result is more accurate, and the edge contact length of the gold and other minerals can also reflect the embedding state of the gold. The data measured by the testing method is closer to the actual production, and the definition of the gold ore oxidation rate is met.

The invention belongs to the technical field of hydrometallurgy, and particularly relates to a pretreatment method for improving the leaching rate and the carbon adsorption rate of high-sulfur-arsenic gold ore. Comprising the following steps that the high-sulfur-arsenic gold ore is ground and then prepared into ore pulp; a green oxygen activating agent and hydrogen peroxide are sequentially added into the ore pulp, oxidation pretreatment is conducted on the high-sulfur-arsenic gold ore, ore pulp activating liquid is formed, and the green oxygen activating agent is a mixture of calcium oxide, sodium persulfate and soluble bivalent iron salt; and adding a gold leaching agent into the ore pulp activation solution, adjusting the pH value of the ore pulp to 9-12, carrying out stirring gold leaching treatment, filtering to obtain a leaching solution, and then adding activated carbon to adsorb and extract gold. According to the method, a stronger oxidation environment is provided, meanwhile, the residual concentration of arsenate radicals in the solution is effectively reduced, the leaching rate of gold and the adsorption rate of activated carbon are greatly increased, excellent oxidation performance and environment friendliness are shown, and a more sustainable high-sulfur-arsenic gold ore pretreatment process is provided.

The invention belongs to the technical field of hydrometallurgy, and particularly relates to a pretreatment method for enhancing peroxide to improve the leaching rate of high-sulfur-arsenic gold ore. Comprising the following steps that the high-sulfur-arsenic gold ore is ground and then prepared into ore pulp; an oxidizing agent is added into the ore pulp, oxidation pretreatment is conducted on the high-sulfur-arsenic gold ore under the catalytic action of ultraviolet light, and ore pulp activation liquid is formed; and the pH of the ore pulp activating solution is adjusted to 9-12, a gold leaching agent is added into the ore pulp complexing solution, and stirring gold leaching treatment is conducted. According to the method, efficient oxidation of sulfide and arsenide is achieved under the mild condition through the synergistic effect of photocatalysis and chemical oxidation, the leaching rate of gold is remarkably increased, compared with a conventional peroxide oxidation method for pretreatment, the leaching rate can be increased by 10%-35%, and meanwhile the agent use amount and environmental pollution are reduced.

The invention discloses a rapid enrichment-atomic absorption spectrum analysis method for low-content gold in gold ore, and relates to the technical field of gold ore analysis and detection.The rapid enrichment-atomic absorption spectrum analysis method comprises the following steps that an ore sample and a solid composite additive are mixed and roasted at the low temperature of 500-650 DEG C, and the additive contains alkali metal carbonate and zinc oxide; sulfur fixation, catalytic oxidation of organic carbon and stabilization of volatile elements can be synchronously realized; the method comprises the following steps: roasting gold-loaded activated carbon, dissolving the gold-loaded activated carbon in aqua regia to obtain a to-be-enriched solution, enabling the solution to pass through an adsorption column filled with modified activated carbon, pretreating the activated carbon with a 1-10% ammonium citrate solution to improve the selective adsorption capacity of the activated carbon on gold chloride complex ions, ashing the gold-loaded activated carbon, dissolving residues, fixing the volume, and measuring by using an atomic absorption spectrometry. According to the rapid enrichment-atomic absorption spectrum analysis method for the low-content gold in the gold ore, through cooperation of low-temperature roasting of the composite additive and selective adsorption of the modified activated carbon, the decomposition efficiency and enrichment selectivity of the ore difficult to treat are improved.

The invention provides a gold ore phase analysis method, and belongs to the field of mineral analys.The gold ore phase analysis method comprises the steps that a gold ore sample is prepared into ore pulp, the pH value is adjusted to 10-11, ultrasonic cavitation treatment is conducted after polyethylene glycol is added, and limonite turbid liquid and sedimentation bottom mud are obtained through separation; the turbid liquid is subjected to flocculation precipitation, drying, roasting, acid dissolution and impurity removal, and the limonite gold-loaded grade is obtained through the mass difference before and after dissolution and gold concentration determination; separating metal sulfide ore heavy minerals and gangue minerals from the settled bottom mud through artificial heavy elutriation, performing acid dissolution and impurity removal on the metal sulfide heavy minerals, and calculating the gold loading grade of the metal sulfide heavy minerals through mass difference and gold concentration determination; after gangue minerals are subjected to oxidizing roasting, the gold content is measured after concentrated acid dissolution; and calculating the distribution rate of gold based on the result. The gold loading grade and distribution of the limonite phase, the metal sulfide ore phase and the gangue mineral phase are measured in a split-phase mode, the method is highly matched with the gold ore development process, operation is easy and convenient, the result is reliable, and beneficiation and metallurgy technological process formulation and technical index pre-judgment can be effectively served.

The invention discloses a method for quantitatively testing the content of organic carbon and disseminated particle size in gold ore, and belongs to the technical field of gold ore detection. The method comprises the steps of sample preparation and quantitative testing, wherein palm wax serves as a cementing agent, barite serves as a standard sample, and a to-be-tested sample is prepared through melting, mixing, consolidation, polishing and carbon spraying; the quantitative test is based on an automatic process mineralogy test system, palm wax backgrounds are removed through backgrounds deduction, an energy spectrum library is established to recognize organic carbon and barite particles, the area ratio of the organic carbon and the barite particles is measured, the mass ratio is converted by combining the density ratio, the organic carbon content of raw ore is inversely calculated, and meanwhile, the particle size distribution of the organic carbon is counted. The method solves the problem that the content and granularity of organic carbon cannot be accurately quantified at the same time in the prior art, has the advantages of high test precision, high efficiency, comprehensive parameters and simplicity and convenience in operation, and can provide key data for optimization of a gold ore cyanidation leaching process.

The invention discloses a micro-fine particle gold ore normal-pressure alkaline leaching pretreatment method based on sodium percarbonate reinforcement, and belongs to the field of precious metal metallurgy. The method comprises the following steps: adding an oxidizing agent sodium percarbonate in batches under the condition that air is filled into ore pulp, starting to monitor the oxidation potential and the pH value of a reaction system after adding, judging that the reaction reaches the end point when the sudden drop amplitude of the oxidation potential of the ore pulp within one hour is greater than or equal to 30mV and the pH value is increased by 0.3-0.5 unit, and stopping aeration to finish pretreatment; in the segmented oxidation process, the oxidation potential is controlled within the range of + 520 mV to + 550 mV by dynamically adjusting the air charging rate. According to the basic technical scheme, the gold leaching rate reaches 86.01%, the gold leaching rate reaches up to 88.92% through the optimized technical scheme, and the utilization rate of gold ore resources is remarkably increased.

The invention relates to the technical field of low-grade gold ore recovery, and discloses a photoelectric intelligent sorting-based low-grade gold ore comprehensive recovery method, which comprises the following steps of: firstly, collecting physical characteristic data such as ore particle size distribution, color characteristics and density, calculating a sorting path and parameters, and evaluating a processing demand to generate a target sorting strategy; combining historical sorting data and ore grade fluctuation data, making and optimizing a preliminary sorting plan through clustering analysis, a random forest algorithm and the like, and generating a personalized sorting scheme; according to the final implementation scheme, the ore recovery rate index is monitored in real time through a sensor, the light intensity threshold value and the separation speed are dynamically adjusted through a long-short-term memory network, a fuzzy logic control system and the like, and a comprehensive recovery scheme is generated. According to the method, by means of multiple intelligent algorithms and a real-time feedback mechanism, the sorting precision and the ore recovery rate are improved, and efficient comprehensive recovery of the low-grade gold ore is achieved.

The invention provides a beneficiation method for copper-zinc associated gold ore, and relates to the field of beneficiation. The raw ore is subjected to pulping, copper, zinc and other floatable roughing, and copper, zinc and other floatable rough concentrate and copper, zinc and other floatable roughing tailings are obtained; performing copper separation roughing on the iso-floatable rough concentrate to obtain copper rough concentrate and separation roughing tailings, performing concentration on the copper rough concentrate to obtain copper concentrate, and performing scavenging on the separation roughing tailings to obtain zinc scavenging concentrate; zinc-sulfur mixed roughing is carried out on floatable roughing tailings such as copper and zinc to obtain zinc-sulfur roughing concentrate and zinc-sulfur roughing tailings, zinc-sulfur concentration is carried out on the zinc-sulfur roughing concentrate to obtain zinc-sulfur concentrate, zinc-sulfur separation roughing is carried out on the zinc scavenging concentrate and the zinc-sulfur concentrate to obtain zinc rough concentrate and sulfur rough concentrate, and scavenging is carried out on the sulfur rough concentrate to obtain sulfur concentrate; zinc concentration is carried out on the zinc rough concentrate to obtain gold-containing zinc concentrate, carbon leaching is carried out on the gold-containing zinc concentrate to obtain leached ore pulp and gold-loaded carbon, filter pressing is carried out on the leached ore pulp to obtain zinc concentrate and cyanogen-containing barren liquor, and the gold-loaded carbon is analyzed to obtain regenerated carbon and pregnant solution. According to the method, efficient comprehensive recovery of raw ore is achieved.

The invention provides a gold mineral exploration method, device and system and a storage medium. Relates to the technical field of mineral exploration. The gold mineral exploration method comprises the following steps: acquiring a backscattered electron image of a sample to be detected, and screening bright mineral phase particles based on a preset gray threshold; performing energy spectrum analysis to obtain an actually measured energy spectrum corresponding to each bright mineral phase particle; and determining the gold-bearing minerals in the to-be-detected sample according to the actually measured energy spectrum. According to the method provided by the invention, the gold-bearing mineral is determined by analyzing the actually measured energy spectrum, and the identification accuracy and the automation efficiency of the micro-fine gold are improved; the method can effectively solve the problem of missed judgment caused by energy spectrum signal mixing and low matching degree due to fine or wrapped particles in a traditional method, so that more accurate process mineralogy data is obtained, and a reliable basis is provided for formulating an efficient dressing and smelting recovery scheme.

The invention relates to the technical field of data detection, and discloses a gold ore vein measuring and positioning method based on multi-data coupling, and the method comprises the steps: building an omnibearing monitoring basis through multi-source data collection, building a separation trend and abnormality through a dynamic baseline, and determining a real causal path through the recognition of a causal structure. Training data are enriched through anti-fact sample expansion, graph network modeling is adopted to fuse spatial topology and a causal mechanism, incremental online updating is implemented to maintain model adaptability, physical mechanism verification is performed to ensure mechanical rationality, finally, an adjustment scheme is output through risk prediction decision, and a knowledge migration multiplexing mechanism is established to realize cross-project application. According to the complete technical chain, cognitive upgrading from surface data association to a deep causal mechanism is achieved, settlement prediction is converted into scientific decision from experience judgment, and prediction accuracy, interpretability and generalization ability are improved.

The invention relates to the field of metallurgy and chemical engineering, in particular to a heap leaching gold extraction method for low-grade gold sulfide ore. Comprising the following steps that an anti-seepage bottom mat is laid on a dump leaching site; pre-treating the sulfide gold ore by using quick lime; ore crushing; ore is poured and piled on the upper portion of the bottom pad; spraying is conducted on the top of the ore heap and a side slope frame pipe, the gold-containing pregnant solution is collected, and the spraying solution is a sodium cyanide solution; and recovering gold from the gold-containing pregnant solution. According to the heap leaching gold extraction method provided by the invention, the quicklime is adopted to carry out pretreatment (iron removal, desulfurization and arsenic removal) on the sulfide gold ore, and then processes of subsequent ore crushing, heap building, spraying, adsorption and the like are carried out, so that the difficult problems of heap leaching utilization and popularization of low-grade sulfide ore resources are solved.

The invention relates to the technical field of gold mine mining, in particular to a gold mine mining rope saw cutting machine combined type guide wheel structure which mainly comprises a first fixing column, an anti-disengaging mechanism and a locking mechanism, a guide wheel is rotationally installed at one end of the first fixing column through a bearing, a first sleeve is installed on the outer wall of the first fixing column, and the anti-disengaging mechanism is arranged on the outer side of the guide wheel. And the locking mechanism is arranged on one side of the guide wheel. A pull rod is pulled to drive a moving plate and an L-shaped strip to move and extrude a first elastic part, the L-shaped strip moves out of a limiting groove, two supporting plates and an anti-shelling shell are adjusted to move to proper positions, the pull rod is loosened, the first elastic part pushes the moving plate and the L-shaped strip to move, the L-shaped strip moves to the limiting groove for limiting, and the L-shaped strip, the supporting plates and the anti-shelling shell are fixed in a limiting mode. The rope on the guide wheel is limited and prevented from falling off through the anti-falling shell, the rope cannot be separated from the guide wheel, the walking path of the rope is not prone to deviation, and then the cutting accuracy and efficiency are improved.

The invention discloses a knowledge graph construction method and equipment for gold ore dressing and metallurgy and a medium, and relates to the technical field of mining informationization, and the method comprises the steps: building a directed connection relation based on dressing and metallurgy flow topology, and generating point location and test mapping; selecting and smelting data are received, process batches are generated according to accumulated feeding quality, a batch time window is determined, and standard variables are aggregated to form batch instances; segmenting a working condition event in the batch according to variable change intensity and generating an event statistical vector; loop inlet and outlet streams are determined, event-level metal quantity closing and interval verification are carried out, and evidence intensity is obtained through fusion; the credibility of the constraint interval, the intervention action and the causal hypothesis is updated according to the evidence intensity, incremental writing is carried out, and the influenced sub-graph is verified again. According to the method, event-level metal quantity closing and interval verification are carried out according to the loop inlet and outlet streams, and the evidence intensity is generated through fusion, so that the credibility of the knowledge is quantified and constrained by the computable evidence, and the reliability and the error correctability of the graph entering knowledge are improved.

The invention provides a preparation method and application of a modified PVC adsorbent for gold extraction of carbonaceous gold ore, and belongs to the technical field of organic polymer materials and resource utilization. Based on construction of a hydroxylation-xanthate esterification reaction and bifunctional adsorption sites, a series of chemical modification paths of acetate nucleophilic substitution-hydrolysis-carbon disulfide alkali treatment are established, and xanthate functional groups with high reaction activity are accurately constructed on an inert PVC framework. Sulfur atoms in xanthate groups of the modified PVC are excellent electron donors and can generate strong chemical adsorption with metal impurities or polar sites on the surface of carbon, meanwhile, Van der Waals interaction between a main chain of the modified PVC and the carbon is reserved, and unmodified PVC or single hydroxylated PVC does not have the synergism of chemical adsorption and physical adsorption, so that the modified PVC can be used for preparing the carbon-modified PVC composite material, and the carbon-modified PVC composite material can be used for preparing the carbon-modified PVC composite material. And leap-type improvement of the adsorption capacity and selectivity of organic carbonaceous in minerals is realized.

The invention discloses a gold ore prospecting and exploration sampling device and method, and relates to the technical field of prospecting and exploration equipment, and the device comprises a main body frame which comprises a sampling vehicle main body and a data processing unit; the sampling area is composed of a multi-joint mechanical arm and a sampling drill bit; the analysis area comprises a sample management assembly, the sample management assembly is integrated in the sampling vehicle main body, and the analysis area is used for automatic identification, storage, preliminary analysis and pretreatment of samples. According to the invention, automatic sampling, intelligent data analysis and adaptive sample treatment are integrated, and closed-loop optimization of the exploration process is realized. According to the method, multi-source geological data are fused through a machine learning model, a sampling strategy is intelligently predicted and optimized, and a sample preprocessing process can be dynamically adjusted to ensure analysis precision, so that the efficiency and accuracy of gold mine exploration are remarkably improved.

The invention relates to a gold oxide ore carbon slurry cyaniding smelting extraction method which comprises the following steps: 1) pretreating ore pulp: adding lime milk into gold oxide ore powder, adjusting the pH value to be greater than 10.5 to obtain ore pulp, then adding a pretreating agent, and fully and uniformly mixing to obtain pretreated ore pulp; (2) synchronous cyaniding leaching and adsorption are conducted, specifically, the pretreated ore pulp is subjected to synchronous leaching and adsorption, in the process, the concentration of free cyanogen is controlled to be 0.04%-0.06%, the PH value is controlled to be larger than 10.5, the concentration of a carbon adsorbent is controlled to be 18-22 g / L, and a gold loading material is obtained; the gold loading material is desorbed till the gold concentration in a desorption solution is smaller than or equal to 0.2 mg / L, desorption is stopped, a pregnant solution is obtained and then electrolyzed, when the gold concentration is smaller than or equal to 0.2 mg / L, electrolysis is stopped, scraping is conducted, and gold mud is obtained, and (4) smelting and aftertreatment are conducted, the gold mud is smelted and subjected to aftertreatment, and gold is obtained.The process has the advantages of being small in cyanide consumption and the like.

The invention relates to the technical field of mining, in particular to a continuous drilling device for mining, which comprises a base, a crawler walking mechanism, a protective shell, a mining cutterhead, a transmission mechanism, an adjusting mechanism and a linkage control mechanism, the crawler walking mechanism is arranged at the bottom of the base, and the protective shell is arranged at the top of the base; one side of the base is connected with a mining cutter head used for mining a gold mine, the transmission mechanism is used for driving the mining cutter head to rotate, a worm and a worm wheel are meshed and linked, and through the synergistic effect of a connecting rod structure, a sliding block can drive the mining cutter head to move in a guide frame, and real-time adjustment of radial displacement of the mining cutter head is achieved. The path deviation can be corrected without shutdown, the transmission structure can bear high-frequency angle adjustment under heavy-load torque, an additional power source is not needed, the transmission structure is economical and efficient, linkage of the connecting rod assembly and the worm gear is controlled in real time through the linkage control mechanism, and rapid decoupling of the worm gear and the connecting rod structure is achieved.

The invention relates to the technical field of gold mine filling automatic control, in particular to a gold mine filling automatic control method based on the Internet of Things. The method comprises the steps that original multi-modal data are collected and preprocessed, the preprocessed multi-modal data are subjected to tensor nonlinear transformation, and disturbance characteristic quantities are obtained; constructing a modal input vector based on the disturbance characteristic quantity, and processing the modal input vector to obtain a hidden layer embedding vector; based on the implicit layer embedding vector, carrying out implicit variable path evolution processing to obtain inter-modal path tension; constructing a control instruction based on the inter-modal path tension; after the control instruction is sent to the control equipment, original multi-modal data are collected in real time and predicted; and calculating a composite quantitative feedback error based on the multi-modal data predicted value, and updating and optimizing the control instruction. The problems that the filling quality control precision is low, the filling efficiency is not high, the manual dependence degree is large, filling parameter adjustment lags behind, and the sudden disturbance response capacity is poor in the current gold mine filling operation are solved.

The utility model relates to the technical field of sand gold ore exploration devices, and discloses a coring pipe angle adjusting mechanism for sand gold ore exploration, which comprises a base, a rotating frame, a swinging frame, a truss, a first cylinder body and a second cylinder body, the lower end of the rotating frame is hinged with the base, and the lower end of the first cylinder body is hinged with the base; a piston rod of the first cylinder is hinged to the upper end of the rotating frame, the middle of the swing frame is rotationally connected with the rotating frame, the lower end of the second cylinder is hinged to the rotating frame, a piston rod of the second cylinder is hinged to the swing frame, the truss is slidably connected with the swing frame, and an impact rotating power head is arranged on the truss. According to the utility model, accurate vertical drilling can be realized, the sampling authenticity is guaranteed, and the complex terrain adaptability and the operation efficiency are improved.

The invention discloses a device and method for preparing a gold ore sample based on liquid nitrogen spraying circulating freezing, and belongs to the technical field of geological mineral sample preparation. The device for preparing the gold ore sample based on liquid nitrogen spraying circulating freezing comprises a base, and a preparation cylinder and a liquid nitrogen circulating device are fixedly installed on the base; a safety valve is installed on the liquid nitrogen circulating device, a liquid inlet pipe is fixedly installed on one side of the liquid nitrogen circulating device, a circulating pipe and a backflow pipe are fixedly connected between the liquid nitrogen circulating device and the preparation cylinder, a separation assembly is arranged in the preparation cylinder, the circulating pipe penetrates through the separation assembly, and a spraying pipe is installed in the preparation cylinder in a sealed mode through a rotating connector. The spraying pipe is provided with the spraying device, the spraying device is connected with the safety valve, liquid nitrogen is injected into the liquid nitrogen circulating device through the liquid inlet pipe, and after the circulating pump is started, the liquid nitrogen enters the preparation cylinder through the circulating pipe and is sprayed to the surface of the ore in the form of fine fog drops through the spraying pipe, so that the temperature of the ore is reduced to below-160 DEG C within a short time, and the embrittlement effect is achieved.

The subject invention provides safe, environmentally-friendly compositions and efficient methods for extracting impurities from gold ore. More specifically, the subject invention provides compositions derived from microorganisms for pre-leaching treatments of gold ore, which can be used for reducing carbonaceous material in gold ore.

The application relates to the mining field and particularly relates to a dust suction type drilling structure for gold mining and a mining machine with the same, which comprises a vehicle frame, a bucket fixedly arranged at one end of the vehicle frame, a drill bit arranged on the vehicle frame, an angle adjusting assembly arranged on the vehicle frame and used for adjusting the angle of the drill bit, a reciprocating mechanism connected with the angle adjusting assembly and arranged on the vehicle frame, the reciprocating mechanism being capable of controlling the reciprocating swing of the drill bit through the angle adjusting assembly, a collecting assembly arranged on the bucket and connected with the reciprocating mechanism, the reciprocating mechanism being capable of driving the movement of the collecting assembly, the collecting assembly being used for collecting the soil drilled by the drill bit into the bucket, and a dust removal mechanism arranged on the vehicle frame, the vehicle frame being further provided with a driving assembly connected with the dust removal mechanism and the reciprocating mechanism, the reciprocating mechanism being capable of driving the movement of the dust removal mechanism through the driving assembly.

The application discloses a method for improving recovery rate of extremely fine-grained gold ore by multi-process cooperation and belongs to the field of gold leaching by a wet method.According to different occurrence states of the extremely fine-grained gold ore, the application sequentially carries out phased and targeted recovery in the order of flotation, magnetic separation, alkali leaching pretreatment and cyanide leaching, or sequentially carries out phased and targeted recovery in the order of alkali leaching pretreatment, cyanide leaching, cyanide breaking, flotation and magnetic separation.Through the multi-process cooperative process, the application realizes phased and accurate recovery of gold in different occurrence states in the extremely fine-grained gold ore, significantly improves the total recovery rate of gold, and has the advantages of mild process, controllable cost and good environmental protection, thereby providing a new technical scheme for efficient recovery of extremely fine-grained refractory gold ore and having a wide industrial application prospect.

The invention provides a gold ore continuous separation process, and relates to the technical field of ore separation, the gold ore continuous separation process comprises the following steps: S1, gold ore containing gangue is prepared into gold ore pulp, and the prepared gold ore pulp is discharged into a separation roller through a discharging pipeline and is close to the closed side; s2, the separation solution is fed into the separation roller through a liquid guide pipeline and close to the closed side, and the separation solution and the gold ore pulp directionally flow from the closed side in the separation roller to the open side in the separation roller; s3, controlling the separation roller to rotate directionally or swing back and forth while controlling continuous introduction of the gold ore pulp and the separation solution; and S4, the bottom of the turbulent flow device is controlled to spray out the sorting solution, turbulent flow on the bottom of the sorting area is achieved, gangue floating is accelerated, and the gangue is directionally discharged from the open side of the sorting roller along with the sorting solution. The gold ore continuous sorting efficiency and effect are greatly improved, and the gold ore sorting cost is reduced.