346 results about "Polymetal" patented technology

The invention discloses a multi-factor prospecting prediction method suitable for tin polymetallic ore, and relates to the technical field of geological science. The prospecting prediction method comprises the following steps: collecting data; fusing multi-source data; extracting and analyzing mineralization information; constructing a comprehensive prediction model; and predicting mineralization. According to the method, a potential tin polymetallic ore deposit area is preliminarily selected by comprehensively considering multi-source information such as geology, geophysics, geochemistry and remote sensing, drilling data and profile data are collected in the area, the drilling data and the profile data are utilized to construct a comprehensive prediction model, and the model is combined with advanced algorithms such as geostatistics and machine learning, so that the prediction accuracy of the tin polymetallic ore deposit area is improved. The multi-source data is efficiently integrated, and a three-dimensional visualization result is provided, so that the position and the scale of a potential ore body can be more accurately predicted, and the success rate of prospecting is improved.

The invention provides a treatment method for low-grade multi-metal gold concentrate, and relates to the technical field of comprehensive utilization of minerals. According to the treatment method of the low-grade multi-metal gold concentrate, most of iron and copper form iron-copper matte through pyrogenic smelting, meanwhile, gold is captured into the iron-copper matte, then iron-copper matte powder is obtained after water quenching and ball milling, the iron-copper matte powder is subjected to oxidation ammonia leaching, copper in the iron-copper matte is extracted, and the iron-copper matte powder is subjected to oxidation ammonia leaching to obtain the low-grade multi-metal gold concentrate. The obtained copper-containing ammonia leaching liquid is subjected to a traditional extraction-reverse extraction-electrodeposition process to obtain an electrodeposited copper product, ammonia leaching residues obtained after copper extraction are subjected to cyanidation leaching, gold in the ammonia leaching residues is extracted, cyanidation liquid is subjected to a traditional gold extraction process to obtain a gold product, the cyanidation tailings mainly comprise iron sulfide, the content of iron and sulfur in the tailings is high, and the content of sulfur in the tailings is high. And the subsequent cinder can be directly sold as an iron-making raw material. The amount of iron-silicon slag generated by the method is extremely low, and compared with a traditional molten pool smelting method, the comprehensive utilization rate of iron in the multi-metal gold concentrate is greatly increased.

The invention relates to a preparation method of a multi-metal coarse-grained ore sample. The preparation method of the multi-metal coarse-grained ore sample comprises the following steps: roasting an ore sample, and pre-screening the roasted sample by adopting a 6-mesh standard sieve; carrying out coarse crushing on the residual materials after pre-screening, and uniformly mixing the crushed materials with the pre-screened materials; carrying out intermediate crushing on the uniformly mixed materials, and feeding the materials subjected to intermediate crushing into a crusher for grinding; and repeatedly and uniformly mixing the ground materials, dividing the uniformly mixed ground materials into a sample amount, grinding the divided materials into 200 meshes through a sealed test sample preparation grinder, and uniformly mixing and bagging the ground materials. According to the scheme provided by the invention, through four links of coarse crushing, intermediate crushing, fine crushing and fine grinding, large-particle-size ore materials are crushed and processed by stages, the particle size of each stage and representativeness of a division sample are ensured, the ore materials are finally processed to the particle size of-200 meshes or below, the qualified rate of preparation of coarse-particle ore samples is increased, and accurate guidance of production is realized.

The invention relates to an active source magnetization-time domain electromagnetic induction polarization multi-parameter extraction method, and provides an active source magnetization-time domain electromagnetic induction polarization multi-parameter extraction method aiming at induction response caused by conductivity, polarization response caused by chargeable property and magnetization response caused by magnetic complex physical property in polymetallic ore detection. When the emission current is in a flat-topped stage, based on an active magnetic method, magnetic susceptibility extraction is carried out by using an Oxim method; when the emission current is in a turn-off stage, resistivity and polarization extraction is carried out by using a depth Q network method based on a time domain electromagnetic method by taking the extracted magnetic susceptibility as a constraint condition; and finally, multi-parameter extraction of resistivity, polarizability and magnetic susceptibility of the active source magnetization-time domain electromagnetic induction polarization method is realized.

The invention provides an intelligent collection method for deep sea polymetallic nodules. The method comprises the following steps: S1, capturing a tuberculosis image through a seabed camera of a mining vehicle; s2, carrying out graying processing on the acquired image; s3, carrying out binarization processing on the preprocessed tuberculosis image; s4, expanding the processed tuberculosis image based on a morphological reconstruction method; s5, determining the particle size and shape of the tuberculosis; s6, comparing with existing tuberculosis data, and determining the quality of the tuberculosis; s8, selecting the optimal advancing route of the mining vehicle, and determining the working condition of the advancing route; s9, further adjusting jet parameters according to the determined information; s10, collecting the tuberculosis washed out by the jet flow; s11, lifting the collected tuberculosis to a collection ship; s12, carrying out collection result detection on the mining area; and S13, if the collection result does not reach the standard, continuing collection, and if the collection result reaches the standard, ending collection. Through the steps, the intelligent and efficient collection system for the deep sea polymetallic nodules is formed.

The invention belongs to the technical field of image processing and deep-sea mining, and discloses a deep-sea polymetallic nodule single-view three-dimensional reconstruction method and system. Aiming at the problem that the real three-dimensional data of the underwater polymetallic nodule is difficult to acquire, a multi-view generation model is adopted as 2D prior, 3D Gaussian is optimized through fractional distillation sampling loss, any three-dimensional data training is not used, the problem of three-dimensional data acquisition is solved, and three-dimensional reconstruction of the polymetallic nodule is realized. In addition, the invention provides a method only through image fine tuning, function decoupling of a noise prediction module (Unet) and a condition control network (multi-view model) is realized based on DreamBooth, and multi-view generation stability can still be maintained through pre-training view angle parameters under empty condition input; and the problem of parameter acquisition of the underwater camera is avoided through a conditional blanking mechanism, so that the model can be finely adjusted only by depending on a single-view image, and the data acquisition cost is reduced.

The invention discloses a method and a system for estimating the content of key metal elements of a crusting based on a hyperspectrum, and belongs to the technical field of deep sea mineral detection. The method comprises the following steps: selecting a crusting sample, obtaining hyperspectral data and chemical data of the crusting sample, establishing a point selection data set at a corresponding position, deleting abnormal sample points, and calculating the content of the key metal elements of the crusting sample; the method comprises the following steps: selecting a characteristic wave band of a crusting sample through preprocessing and CARS to obtain a characteristic wave band data set; and based on an MLP neural network model, performing model training through the data set, and constructing an estimation model for estimating the grade of the crusting sample. Compared with the prior art, the method has high accuracy and high predictive capacity, by inverting chemical data of the whole crusting section and applying the scheme for estimating the content of the key metal elements of the crusting, nondestructive grade and abundance analysis of the crusting sample can be achieved, and a reliable scientific basis is provided for seabed detection and multi-metal mineral exploitation.

The invention relates to the technical field of deep-sea mining, and discloses an extrusion rotary type deep-sea multi-metal nodule low-disturbance collecting device which comprises a set of skid mechanisms formed by all-terrain skid plates arranged side by side, all-terrain skid plates are connected with direction skid through steering pull rods, each skid mechanism is provided with a grating storage cabin, and the grating storage cabins are connected with the all-terrain skid plates through steering pull rods. The inlet end of each grid storage bin is connected with a grid pressing shovel installed on the skid mechanism through a rotary collecting head. According to the invention, the all-terrain skid plates are used as walking mechanisms, so that low-disturbance advancing can be realized on one hand when the multi-metal nodules are collected by walking, and on the other hand, the advancing direction and operation attitude can be adjusted in real time by the cooperation of the multiple groups of all-terrain skid plates, so as to meet different collection requirements of the multi-metal nodules; meanwhile, a combined structure of the grating pressing shovel, the rotary collection head and the grating storage cabin is taken as a core, so that the multi-metal nodule in a buried or semi-buried state can be shoveled up in a low-disturbance manner, and environment-friendly collection is realized.

The invention provides a skarn type polymetallic deposit prospecting exploration method and system based on three-dimensional modeling, and relates to the field of geological prospecting, and the method comprises the steps: obtaining deposit data of an area where a deposit is located, and carrying out the preprocessing of the data of the mined skarn type polymetallic deposit; selecting a multi-scale convolutional neural network as a deep learning model for training so as to predict the position where an ore deposit possibly exists in the unmined area; generating a geologic feature coefficient according to the predicted geologic features of the unmined area; generating a mineral characteristic coefficient through the mineral characteristic data of the three-dimensional model; comparing the mineral characteristic coefficient with a preset weight, and judging whether tungsten-tin ore exists or not; generating a mineral type judgment coefficient according to the content of mineral elements in the sample; generating a comprehensive prediction value through the geologic characteristic coefficient and the mineral characteristic coefficient, and judging the type of the ore deposit according to the comprehensive prediction value and the type judgment coefficient. The method improves the accuracy and efficiency of ore deposit prediction.

The invention relates to the technical field of deep-sea polymetallic nodule resource assessment methods and systems, provides a deep-sea polymetallic nodule resource assessment method and system, and effectively solves the problems that overlapped areas among polymetallic nodules are easy to cover by silt, are located at the edge parts of the polymetallic nodules, are fused with a seabed background, and are not easy to damage. And complete filling cannot be performed through an expansion algorithm, so that the accuracy of the finally calculated coverage rate is not high.

The invention discloses a normal-temperature efficient recovery method for low-grade tungsten in gold, antimony and tungsten multi-metal symbiotic ore. The method comprises the steps that raw ore is ground and then subjected to shaking table reselection, reselected concentrate, reselected middling and reselected tailings are obtained, foam flotation is conducted on the reselected middling, sulfide ore is floated out, coarse-grain tungsten minerals are recycled through reselection of the flotation tailings, ore grinding is conducted on the reselected tailings, gold and antimony bulk flotation is conducted, then scheelite flotation and tungsten concentrate flotation are conducted under the action of a combined collecting agent, and finally tungsten concentrate is obtained. According to the method, aiming at the characteristic that the granularity of the tungsten mineral in the gold-antimony-tungsten symbiotic ore is uneven in thickness distribution, a proper ore grinding separation process and proper ore grinding fineness are selected, the tungsten mineral is prevented from being over-crushed, and underground wastewater is reasonably utilized, so that the use amount of clear water is effectively reduced, and meanwhile, the underground wastewater is recycled; furthermore, an ore pulp heating process is omitted in the tungsten ore concentration stage, the fuel cost is greatly reduced, and therefore the production cost is greatly reduced on the premise that the tungsten concentrate recovery rate is guaranteed.

The invention belongs to the technical field of heavy metal treatment, and particularly relates to a synthesis method and application of a sludge biochar Schwertmannite composite material capable of synchronously mineralizing cadmium and arsenic. Municipal or industrial sludge is used as a raw material, sludge biochar rich in Ca, Fe and alkaline functional groups is prepared through pyrolysis, then the sludge biochar is deeply compounded with Schwertmannite through a high-energy ball milling technology, a core-shell-like nested structure is formed through induction, and a large number of reaction sites are exposed. Under the condition that As / Cd coexists, the surface of the composite material can be induced to generate stable minerals, a synchronous precipitation mechanism is formed, and As and Cd have an adsorption synergistic enhancement effect. The process is wide in raw material source, clean and efficient in preparation process and free of high-temperature hydrothermal or organic reagents, has cation exchangeability, alkali energy storage and carbon immobilization value, provides a new theory and material support for long-term environment immobilization of multi-metal pollutants, and has large-scale application potential.

The invention relates to the technical field of intelligent early warning, and discloses an early warning method and system for ground pressure data of a polymetallic mine upward horizontal stratified stope, and the method comprises the steps: carrying out the time-space registration of the ground pressure data and micro-seismic monitoring data of the polymetallic mine, and obtaining a multi-source heterogeneous monitoring data flow; carrying out coupling analysis on the multi-source heterogeneous monitoring data flow to obtain a ground pressure micro-seismic collaborative feature set; evaluating target stability grades of stope roofs and surrounding rocks in the polymetallic mine; mapping the target stability level to a corresponding ground pressure activity mode in a historical case library in a rock mass quality evaluation knowledge base to obtain a threshold adjustment factor; performing nonlinear correction on the basic risk threshold value of the polymetallic ore to obtain a risk assessment threshold value; comparing the key quantitative indexes in the ground pressure microseismic collaborative feature set with a risk assessment threshold value in real time to assess the current ground pressure risk state of the polymetallic mine, and obtaining graded early warning information; according to the method, the efficiency of early warning of the pressure data of the upward horizontal stratified stope of the polymetallic mine can be improved.

The invention relates to the technical field of electrocatalytic materials, in particular to a preparation method and application of a polyoxometallic acid etching optimized nickel molybdate oxygen evolution electrocatalytic material. The preparation method comprises the following steps: putting flower-cluster-shaped nickel molybdate nanorods which are synthesized on foamed nickel in situ by a one-step hydrothermal synthesis method into a mixed solution of ethanol, water and polyoxometallic acid for etching, washing and drying to obtain the polyoxometallic acid etching optimized nickel molybdate oxygen evolution electro-catalytic material. According to the preparation method, the oxygen evolution reaction performance of the binary nickel-based material nickel molybdate is greatly improved, and the stability of a catalytic material can be guaranteed while efficient electro-catalysis oxygen evolution reaction is achieved. The prepared polyoxometallic acid etching optimized nickel molybdate oxygen evolution electro-catalytic material can be directly used as a self-supporting electrode for an electro-catalytic oxygen evolution reaction, and the method is simple in technological process, green, environmentally friendly, low in cost and low in production cost.

The invention discloses a metal deposit classification method driven by multi-modal fusion data, and relates to the field of specific calculation models.The metal deposit classification method driven by the multi-modal fusion data comprises the following steps that 1, domestic known metal molybdenum deposit cases are collected, existing molybdenum deposit types are classified, and the molybdenum deposit types are classified; classifying based on different characteristics of the molybdenum deposit; compared with the prior art, the method has the beneficial effects that efficient fitting is carried out on the type of the metal ore deposit, and the cause type of the ore deposit can be rapidly and accurately recognized only through several parameters; geological texts, rock ore images, experimental data analysis and other multi-modal data can be fused, and molybdenum deposit cause type classification can be rapidly completed; the original technical bottleneck is broken through, a more efficient and accurate molybdenum ore type classification prediction method is provided, and powerful support is provided for reasonable development and utilization of Mo multi-metal mineral resources.

The invention belongs to the technical field of electro-catalytic materials, and particularly relates to a metal cation doped polymetallic sulfide nanosphere as well as a preparation method and application thereof. The metal cation doped polymetallic sulfide nanosphere is formed by polymetallic sulfide nanosheets, and polymetallic sulfide comprises molybdenum sulfide and metal cation doped cobalt sulfide; the metal cations comprise nickel ions and / or manganese ions. The material has excellent bifunctional catalytic performance of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), shows excellent water electrolysis performance, and can effectively improve the catalytic efficiency of water electrolysis.

The invention discloses a comprehensive recovery method of a low-grade multi-metal material. The comprehensive recovery method comprises the following steps: smelting the low-grade multi-metal material in a reinforced smelting furnace; smelting slag enters the echelon reduction volatilization furnace to be smelted; mixing soot obtained by smelting with the waste zinc electrolyte to obtain pulpified liquid; flue gas obtained by smelting and pulpified liquid are subjected to a contact reaction, and the reacted liquid is subjected to gas-liquid separation; carrying out contact reaction on the flue gas obtained after gas-liquid separation and the liquid again; extracting indium from the obtained lixivium by adopting P2O4; adding tannin into liquid after indium extraction to precipitate germanium; and adding alkali liquor into the germanium-deposited solution to neutralize and recover gallium. According to the method, the low-grade multi-metal material is sequentially subjected to echelon oxygen-enriched enhanced reaction smelting, continuous oxidation desulfurization leaching and scattered metal wet recovery by adopting an efficient smelting method, so that the energy consumption is reduced, the smelting efficiency is improved, the recovery rate of metals such as germanium is improved, the resource recovery rate is improved under the condition of relatively low energy consumption, and the economic benefit is increased. And the method has good social and economic benefits.

The invention relates to the technical field of ore analysis and detection, in particular to a method for simultaneously determining beryllium, tungsten and tin contents in polymetallic ore based on ICP-MS. Comprising the following steps: S1, crushing and grinding to-be-detected ore to obtain polymetallic ore powder; s2, adding the polymetallic ore powder into a mixed flux containing sodium peroxide and sodium hydroxide, melting at a high temperature, cooling, adding a hydrochloric acid solution of citric acid, carrying out heat extraction, and adding water to a constant volume, so as to obtain a sample solution to be detected; and S3, detecting the sample to be detected by adopting ICP-MS (Inductively Coupled Plasma Mass Spectrometry The method for simultaneously measuring the beryllium content, the tungsten content and the tin content in the polymetallic ore based on the ICP-MS. The method has the characteristics of simplicity, convenience, rapidness, accuracy and the like, and can be used for simultaneously measuring the beryllium content, the tungsten content and the tin content in the polymetallic ore.

The invention relates to the technical field of underwater multi-stage cleaning and transporting integrated treatment systems for deep-sea polymetallic nodules, provides an underwater multi-stage cleaning and transporting integrated treatment system for deep-sea polymetallic nodules, and solves the problem that in the prior art, the loadable capacity of the polymetallic nodules is affected due to the fact that split type multi-stage equipment occupies too large space. The technical problems that in the prior art, due to the fact that a ship needs to be cleaned, uniform treatment needs to be conducted on the ship due to the limitation of the treatment process, blockage is likely to be caused, invalid crushing treatment can occur, and the treatment efficiency is affected are solved, and the device comprises a machine body, a conveying device and a stock bin. The machine body is internally provided with a flushing area, a scrubbing area and a sewage area which are communicated with one another; the sewage area is located below the flushing area and the scrubbing area; a conveying belt used for conveying materials to the scrubbing area to be cleaned is arranged in the sewage area.

The invention discloses a quality-divided separation and high-valued utilization method of coal gasification slag, a generated product and application, and belongs to the technical field of high-valued recycling of coal gasification slag. According to the method, the coal gasification slag is classified by adopting an alkali fusion-acid leaching two-step method, components in the coal gasification slag are classified into pure carbon components and a metal-containing acid leaching salt solution, a high-valued utilization method is provided for the classified components, and the carbon components are activated into an active carbon electrode material with a high specific surface area and applied to the field of energy storage. The metal-containing acid leaching salt solution is prepared into the metal cross-linked hydrogel, and the metal cross-linked hydrogel is applied to the field of coal flame retardance. The method can effectively solve the technical problem that the overall utilization is restricted by carbon ash caused by multi-metal component mixing and high carbon content of the coal gasification slag in the prior art.

The invention discloses a low-grade uranium-gold polymetallic ore rare earth element leaching method and device, and belongs to the technical field of rare earth element extraction. The low-grade uranium-gold polymetallic ore rare earth element leaching method comprises the steps that S1, low-grade uranium-gold polymetallic ore containing rare earth elements is pretreated; s2, preparing an acidic solution, and putting the acidic solution into a leachate container; s3, preparing a hydrogen peroxide solution, and putting the hydrogen peroxide solution into a leachate container; s4, the acid solution and the hydrogen peroxide solution are injected into the reaction container from bottom to top at the speed of 0.5 ml / min. The method has the advantages that the rare earth element leaching efficiency is improved, the environmental pollution risk is reduced, the equipment corrosion is reduced, and the subsequent purification process is simplified.

The invention relates to the technical field of geological exploration, in particular to an intelligent collaborative exploration system for an Aille iron drill polymetallic mine in a plateau desert region. Comprising the following steps that S1, a system collects existing geological, geophysical prospecting, geochemical prospecting and remote sensing data and collects data of 1: 50,000 gravity measurement, 1: 10,000 magnetic method measurement and AMT backbone section, a standardized exploration database is established, and data standardization processing is completed; through multi-source data fusion, intelligent joint inversion and three-dimensional modeling technologies, efficient and accurate exploration of the polymetallic ore in a complex geological environment is achieved, a cross gradient constrained intelligent joint inversion algorithm is adopted, Monte Carlo uncertainty analysis is combined, the deep ore body positioning precision is remarkably improved, and the deep ore body positioning precision is improved. By establishing a standardized exploration database and a quantized target area evaluation system, the delineation accuracy of the prospecting target area is remarkably improved, and by adopting a mode of combining high-precision comprehensive profile measurement and drilling verification, the exploration period is shortened, and the drilling ore finding rate is improved.

The invention provides a preparation method and application of MAX phase derived polymetallic sulfide, and belongs to the field of lithium ion battery negative electrode material preparation. A MAX phase is used as a precursor, metal chlorides such as CuCl2, FeCl2 and CoCl2 are used as etching agents, K2S is used as a sulfur source, and etching in-situ vulcanization is performed under a NaCl / KCl molten salt system to obtain a series of multi-metal sulfide materials. When the prepared multi-metal sulfide material is used as a lithium ion battery negative electrode material, excellent cycle and rate performance is shown.

The invention relates to the technical field of marine special equipment, and discloses a multi-metal nodule mining vehicle, a collecting mechanical arm and a mineral collecting system. The multi-metal nodule mining vehicle comprises a plurality of crawler-type advancing subsystems of special structures, effective dispersion of mine vehicle grounding specific pressure is achieved, traction force is improved, disturbance to soft seabed sediment is reduced, it is guaranteed that the crawler-type systems are matched with seabed frequently-fluctuating terrains as much as possible, the terrain adaptability and obstacle crossing ability are improved, and meanwhile the service life of the crawler-type advancing subsystems is prolonged. Based on a buoyancy control hardware architecture of the crawler-type advancing subsystem constructed by a vertical propulsion propeller, an ultrasonic distance sensor, a processor and a memory, an effective and enforceable hardware environment and software environment are created for intelligent local buoyancy control of the crawler-type advancing subsystems of various special structures.

The invention discloses a seabed in-situ polymetallic nodule ore collecting device and method based on an air lifting strategy, the collecting device comprises an air lifting device, an ore conveying pipeline, a gas conveying pipeline, a telescopic hose and a hydraulic suction device with a flow guide cover, and lifting energy is provided through gas conveying; 360-degree large-range coverage is achieved through the telescopic hose, the hydraulic suction equipment collects the ore through negative pressure, raised dust is restrained through the flow guide cover, and finally the ore is carried by means of bubbles to ascend to complete conveying; according to the method, the technical problems of large marine environment disturbance, limited collection range and low improvement efficiency in a traditional collection method are solved, efficient, low-disturbance and large-range in-situ collection of the polymetallic nodule ore is realized, resource exploitation and ecological protection are considered, and the method has remarkable practical value and application prospect.

The invention relates to the technical field of ocean engineering deep-sea mining equipment, in particular to a multi-metal nodule desliming device suitable for deep-sea mining, which consists of a mineral aggregate input connecting flange, a mineral aggregate input transition cabin, a mineral aggregate enrichment cabin, a waste discharge cabin, a desliming screen, a screen fixing frame, a screen fixing screw and a waste discharge guide plate. The mineral aggregate input connecting flange is located at the front end of the multi-metal nodule desliming device and used for being connected with the multi-metal nodule collecting and conveying device, the mineral aggregate input transition cabin is tightly connected with the mineral aggregate input connecting flange, and a square opening is formed in the rear end of the mineral aggregate input transition cabin. The shape of the front end of the mineral aggregate input transition cabin is the same as that of the mineral aggregate input connecting flange.

The present invention discloses a method for quantitative determination of trace harmful elements in various flotation products of rare polymetallic ores, which includes three parts: sample processing, preparation of complex matrix standard solution and sample testing. Each flotation product is digested with analytically pure concentrated nitric acid; the main mineral species of each product are determined by XRD, and the high-purity standard substances of each main associated mineral are digested with analytically pure concentrated nitric acid, and the content of harmful elements to be monitored is determined by ICP-MS after appropriate dilution; each standard substance digestion solution is diluted to a major element concentration of 1000μg / mL, and used to dilute the harmful element standard stock solution to obtain standard solutions with different concentration gradients; then the process blank and digestion sample are tested using an inductively coupled plasma mass spectrometer using a combination of internal standard method and matrix matching to obtain the content of trace harmful elements to be measured. It effectively overcomes the mass spectrometry and non-mass spectrometry interference problems faced by complex matrix sample testing, is suitable for the analysis and testing of trace element content in complex samples, and has a simple method and is easy to operate.

The invention discloses an arsenic-containing copper-zinc polymetallic ore beneficiation method and an arsenic-containing mineral inhibitor, and belongs to the field of beneficiation. The arsenic-containing mineral inhibitor comprises the following components by mass percent: 40-60% of lime; 30%-40% of ferrous cyanide salt; and 10%-20% of a sulfomethylation modified tannin extract. The sulfomethylation modified tannin extract is prepared from the following raw materials in percentage by mass: 40-60% of tannin extract; 10-20% of sodium hydroxide; 15 to 25% of formaldehyde; and 5-15% of sulfuric acid. According to the method, the lime, the ferrocyanide and the sulfomethylation modified tannin extract are innovatively compounded according to a specific proportion and are in mutual synergistic interaction, the selectivity of arsenic mineral inhibition can be effectively improved, the agent dosage is reduced, the long-term effect of inhibition is enhanced, deep arsenic reduction can be achieved in the mineral separation process, and the concentrate quality and the recovery rate are improved.

The invention discloses a deep sea polymetallic nodule automatic picking and storing system which comprises a grating type storage cabin, a plurality of collecting openings are formed in the bottom of the grating type storage cabin, grating type telescopic net bags are arranged in the collecting openings, a grating type baffle is arranged at the bottom of the grating type storage cabin, and the grating type telescopic net bags are in linkage with the grating type baffle; the grating type telescopic net bag extends out of the collecting opening and is inserted into the deep position of sea mud to pick up the polymetallic nodules, the grating type telescopic net bag lifts and transports the polymetallic nodules into the grating type storage cabin when returning, and picking and storage are completed synchronously. The grating type telescopic net bag extends out of the collecting opening in the bottom of the grating type storage cabin and is inserted into the deep sea mud to pick up the polymetallic nodule so as to reduce disturbance to the seabed, meanwhile, by means of a linkage mechanism of the grating type baffle and the grating type telescopic net bag, the grating type baffle opens the collecting opening when the grating type telescopic net bag returns, and therefore the collecting effect is improved. And the collection port is closed before the grid type telescopic net bag extends out, so that the collection and storage integration of the deep sea polymetallic nodule is realized.

The invention discloses a deep sea polymetallic nodule mining vehicle which comprises a structural frame. The crawler walking mechanism is arranged at the bottom of the structural frame and used for driving the deep sea polymetallic nodule mining vehicle to move in the preset direction, and the collecting mechanism is arranged on the front portion of the structural frame and used for collecting polymetallic nodules. The conveying and cleaning mechanism is used for directionally conveying the collected polymetallic nodules and separating and desliming the collected polymetallic nodules; the crushing mechanism is used for crushing the conveyed ores; the storage mechanism is arranged at the tail part of the structural frame and is used for storing the crushed ore; the plume restraining mechanism is used for effectively collecting and treating plume generated in the mining process of the deep-sea mining vehicle and impurities carried by manganese nodules; and the environment sensing mechanism is used for sensing the deep sea environment and controlling the crawler walking mechanism and the collecting mechanism. Collection, screening, cleaning and storage are integrated, the mining capacity is improved, and the problem that an existing mining vehicle is low in collection efficiency is solved.