231 results about "Polymetal" patented technology

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 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 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 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 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 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.

The application discloses a beneficiation method for comprehensively recovering niobium, rare earth and pyrite from low-grade niobium ore, and comprises the following steps: (1) grinding: grinding the niobium ore after crushing to a fineness of 85% to 87% of 0.038 mm, and then adjusting the ore pulp concentration to 25% to 30%; (2) pre-concentration by strong magnetic separation; (3) re-concentration of the rough magnetic separation concentrate by gravity separation; (4) re-separation of the middling concentrate; and (5) flotation separation of the gravity separation concentrate: combining the gravity separation concentrate 1 in the step (3) and the gravity separation concentrate 2 in the step (4) to obtain a gravity separation concentrate, wherein the gravity separation concentrate is a mixed concentrate rich in niobite, rare earth and pyrite; and after the gravity separation concentrate is adjusted into an ore pulp with a concentration of 25% to 35%, the ore pulp is subjected to flotation separation. The application is aimed at the multi-metal low-grade niobium ore with niobite, rare earth and pyrite being associated, realizes efficient separation among the niobium ore, the rare earth ore, the pyrite ore and the gangue ore, and achieves the purpose of comprehensively recovering the niobite, the rare earth and the pyrite.

The invention discloses a deep sea polymetallic nodule dewatering and drying system which comprises a dewatering module and a drying module. The dehydration module is used for dehydrating free gap moisture of deep sea metal nodules, the dehydration module separates the free gap moisture from the metal nodules in a mechanical vibration and extrusion crushing mode, and residual seepage water of the metal nodules in the storage process is collected and discharged. The deep sea metal nodule integrated treatment process is integrated on the ship, offshore in-situ treatment is achieved, and economic benefits are improved. By combining multiple stages of dehydration equipment, the dehydration efficiency of free pore water of the metal nodule is improved. The dewatered metal nodule is heated and dried by waste heat of the smoke pipe of the ship main engine, capillary water and adsorbed water in the metal nodule are effectively evaporated, the water content of the metal nodule is reduced from 80% to about 10%, and meanwhile the ship energy recycling rate is increased.

A process for the recovery of valuable metals from oxide minerals, particularly polymetallic nodules, is disclosed. The process is suitable for the recovery of Cu, Co, Ni, Fe, and Mn, which are the main metals of interest in these polymetallic nodules. Among other features, the present process is characterized by the handling of Fe, which is dissolved and retained in solution until the crystallization stage instead of being removed in an earlier stage. A mixed Mn-Fe residue is obtained, which, after heat treatment, yields a Mn-Fe oxide suitable for the steel or manganese industries. Excellent yields of Cu, Co, and Ni are obtained, while the Fe is leached and recovered along with the Mn.

The invention discloses a method for low-alkalinity flotation of lead-zinc (silver-containing) polymetallic ore based on a heterocyclic sulfydryl coordination polymer, which comprises the following steps of: adjusting the pH value of ore pulp to 7.5 + / -0.3, and sequentially carrying out roughing, scavenging and concentration by adopting a composite collecting agent according to a gradient flotation procedure; wherein the mass concentration of the ore pulp is 20-40%; the adding amount of the composite collecting agent is 150-300g / t of ore pulp; the composite collecting agent is composed of a modified heterocyclic sulfhydryl compound, C12-C18 alkylamine polyoxyethylene ether and a star-shaped branched nonionic surfactant according to the mass ratio of 1: (1-3): (0.5-2). According to the method, the complex silver polymetallic ore is subjected to efficient flotation under the low-alkalinity condition by applying the composite collecting agent based on the heterocyclic sulfydryl coordination polymer. Through deep exploration and optimization of a flotation reagent system, process parameters and a microcosmic action mechanism, the recovery rate of metal such as silver, copper and lead is remarkably increased, and the ore dressing cost is greatly reduced.

The application discloses a method for preparing vanadium electrolyte from vanadium-containing shale through a short process, and comprises the following steps: crushing, grinding and slurry preparation of vanadium-containing shale to obtain ore slurry; flotation of the ore slurry to obtain flotation concentrate; concentration of the flotation concentrate, sulfuric acid aging and water leaching to obtain vanadium-containing leaching solution; removal of aluminum from the vanadium-containing leaching solution to obtain post-aluminum-removal solution; neutralization and reduction pretreatment of the post-aluminum-removal solution to obtain post-pretreatment solution; one-stage extraction of the post-pretreatment solution to obtain vanadium-rich solution I; two-stage extraction of the vanadium-rich solution I to obtain vanadium-rich solution II; and oil removal treatment of the vanadium-rich solution II to obtain vanadium electrolyte. The method realizes efficient extraction of vanadium from multi-metal vanadium-containing shale through flotation and sulfuric acid aging and water leaching, directly uses the vanadium-containing leaching solution as raw material, and prepares vanadium electrolyte through neutralization and reduction pretreatment, one-stage extraction, two-stage extraction and oil removal process. The method has the characteristics of short process, low cost, environmental friendliness, strong adaptability of raw materials, less reagents and energy consumption, etc.

The invention discloses a deep sea multi-metal mineral resource exploration and comprehensive evaluation method. The evaluation method comprises the following steps: S1, data collection and arrangement; s2, selecting a pre-detected deep sea area multi-metal mineral resource exploration method and acquiring mineral resource characteristic data; s3, deep sea multi-metal mineral resource data processing and characteristic variable screening; s4, constructing a full-data three-dimensional geologic model, judging metallogenic geological conditions of the pre-detection area, and summarizing metallogenic rules and distribution occurrence characteristics; s5, establishing a resource comprehensive evaluation element index of the multi-metal resource evaluation model, and determining a self technical economic value and a weight coefficient of an external development condition; s6, establishing a geological model and a grade prediction model; and S7, performing comprehensive scoring and evaluation analysis. The method is characterized in that a deep sea ferro-manganese polymetallic nodule, cobalt-rich crusting and seabed (hydrothermal solution) polymetallic sulfide resource exploration and resource evaluation method is taken as a research object.

The application provides a comprehensive identification method for ore types of complex polymetallic mines, and relates to the technical field of geological mineral exploration, and comprises the following steps: (1) determining an ore type identification scheme and ore-forming elements corresponding to ore minerals and characteristic elements or characteristic compounds corresponding to gangue minerals; (2) performing primary identification on the ore types of field samples obtained from mines; (3) crushing and grinding the field samples; (4) performing geochemical testing on the ore-forming elements and characteristic elements or characteristic compounds of the crushed and ground field samples; (5) inversely calculating the gangue mineral content of the field samples according to the measured characteristic element or characteristic compound content; and (6) performing secondary identification on the ore types of the field samples according to the standard of the ore type identification scheme in step (1). The application provides a more scientific semi-quantitative method for the identification of ore types of complex polymetallic mines.

The invention provides a method for offshore smelting and processing of deep-sea nickel-cobalt-manganese polymetallic ore, and relates to the field of deep-sea mineral resource development. The method comprises the following steps: crushing, grinding and pulping the deep-sea nickel-cobalt-manganese polymetallic ore to obtain raw ore pulp; mixing the raw ore pulp with sulfuric acid to obtain a mixture, and carrying out high-pressure acid leaching with step-by-step heating on the mixture to obtain high-temperature and high-pressure acid leaching pulp; the high-temperature and high-pressure acid leaching ore pulp is subjected to step-by-step depressurization flash evaporation concentration, and concentrated ore pulp is obtained; carrying out solid-liquid separation on the concentrated ore pulp to obtain a leaching solution and leaching residues, precipitating nickel, cobalt and manganese in the leaching solution, and carrying out solid-liquid separation to obtain a nickel-cobalt-copper enrichment and a post-precipitation solution. According to the method, ore is subjected to rough smelting processing on the sea, only target components are recycled, enriched and transported back to the land for smelting, the transportation amount is reduced, most useless components are backfilled to the seabed after being cured, and the seabed after deep sea mining can be repaired easily.

The utility model relates to a multi-metal low-grade flotation tailing metal recovery system which comprises a stirring barrel, a discharging port of the stirring barrel is connected to a feeding port of a hydrocyclone through a sand pump, a sand settling port of the hydrocyclone is connected to a feeding port of a ball mill, and a discharging port of the ball mill is connected to a feeding port of a sand pump pool. An overflow opening of the hydrocyclone is connected to a feeding opening of the roughing flotation machine, a concentrate discharging opening of the roughing flotation machine is sequentially connected to the first flotation classificator, the second flotation classificator and the third flotation classificator, and a concentrate discharging opening of the third flotation classificator is connected to the first cyaniding carbon pulp system. According to the recovery system, concentrate and tailings of raw ore are subjected to roughing separation, then the roughing concentrate and the roughing tailings are subjected to three-stage concentration and two-stage scavenging, valuable metal is enriched in the concentrate as far as possible, the concentrate grade is improved, the scavenged tailings are further enriched and recovered through two-stage magnetic separation, and the recovery efficiency is improved. And finally, valuable metals in the concentrate are efficiently recovered by combining a cyaniding carbon slurry system.

This invention discloses a device and method for co-collecting polymetallic nodules and rare earth elements in deep sea. The collection device includes a mining vehicle, a mineral collection device mounted on the mining vehicle, and an underwater robot. The mining vehicle is equipped with a solidification liquid tank for loading a solidification solution for the soft, rare earth substrate. The solidification liquid tank is connected to the underwater robot, which is equipped with a spraying device for spraying the solidification solution onto the coexisting area of ​​polymetallic nodules and rare earth elements. The mineral collection device collects and transports the polymetallic nodules and the solidified rare earth solids into a storage bin within the mining vehicle. This invention utilizes an underwater robot to spray the solidification solution onto the soft, rare earth substrate in the coexisting area, thereby solidifying the soft, rare earth substrate into rare earth solids. This facilitates collection by the mineral collection device, prevents the flow and dispersion of the soft, rare earth substrate, reduces disturbance during the collection process, avoids the formation of plumes, and achieves efficient co-collection of polymetallic nodules and rare earth elements.

The invention relates to a method for recycling valuable metals in low-grade nickel ore by using a chlorination metallurgy process, and aims to efficiently extract valuable metals such as nickel, copper, cobalt and magnesium. The method comprises the steps of mineral aggregate pretreatment, two-stage chloridizing roasting, screening separation, leaching treatment, chloridizing leaching, iron removal, copper removal, extraction separation, pH adjustment, electrodeposition and the like. By optimizing two-stage fluidizing chlorination parameters, selective separation of impurities such as iron and zinc from nickel and cobalt is achieved, and tedious pretreatment is avoided. A chlorine closed-loop circulation design is adopted, so that internal circulation of a chlorine element is constructed, and reagent consumption and metal entrainment loss are reduced. The nickel, the cobalt and the magnesium are synchronously recycled through multi-metal synergistic extraction and an innovative extraction-electrodeposition coupling process, and particularly the problem of magnesium recycling is solved. The method has the advantages of short process integration, precise separation, cyclic utilization, system balance optimization and the like, the comprehensive metal recovery rate and economic benefits of low-grade ore are remarkably improved, stepped recovery of precious metal and main metal is achieved, and the lean ore resource utilization rate is remarkably improved.

The invention discloses a dressing and smelting combined treatment method for tungsten-tin bulk concentrate, and belongs to the technical field of mineral processing. The method comprises the steps that tungsten-tin bulk concentrate obtained through flotation of a metal ion-hydroximic acid complex collecting agent from tungsten-tin polymetallic ore under the low-alkalinity condition is directly subjected to size mixing, flotation is conducted under the high-alkalinity condition, and bulk concentrate of wolframite and cassiterite and scheelite concentrate are obtained; leaching the scheelite concentrate by using mixed acid to obtain a tungstate-containing acid leaching solution and gypsum; bulk concentrate of wolframite and cassiterite is decomposed through alkaline process autoclaving to obtain tungsten-containing alkaline leaching liquid and tin-rich slag, and cassiterite is recycled from the tin-rich slag through centrifugation. According to the method, OH <-> is used for precisely regulating and controlling the coordination structures of the collecting agents, and efficient separation of scheelite, wolframite and cassiterite is achieved by means of the adsorption characteristic difference of the collecting agents of different coordination structures on the wolframite and the scheelite. And then wet metallurgy is combined to achieve clean and efficient utilization of tungsten resources in the tungsten-tin bulk concentrate and comprehensive recovery of tin resources, and huge economic and environmental benefits are achieved.

The invention discloses a method for flotation separation of lead-zinc-sulfur polymetallic sulfide ore by using high-salt water, which utilizes the foamability of salt ions of the high-salt water and the positive influence of a stable foam layer, does not use a foaming agent in the whole process, and utilizes the natural foamability of the salt ions to carry out carbon roughing, lead roughing, zinc-sulfur floatable roughing and the like. The problem that concentration separation is difficult is solved without using a foaming agent, particularly, floating separation of most carbon in the roughing stage can be completed by using the foaming property of salt ions in the carbon roughing stage without adding any agent, and the agent cost can be remarkably reduced. The zinc-sulfur separation problem of the high-salt-content water is solved by adopting a zinc-sulfur concentrate thickening-fresh water size mixing and regrinding-fresh water separation process which can float zinc-sulfur and the like of the high-salt-content water. Furthermore, a lead rough concentrate thickening-fresh water size mixing and regrinding-fresh water separation process is adopted, mutual content of lead and zinc is sequentially reduced by reducing salt ions, reducing the strong foamability of salt water and weakening the stability of a foam layer, and the quality and recovery rate of main metal are improved.

The invention provides a tungsten polymetallic tailing recovery method and system, and the method comprises the following steps: carrying out crushing and first mineral separation to realize first enrichment so as to obtain a first fraction mineral; second screening is carried out on the first-size-fraction minerals, second mineral separation is carried out on the fifth-size-fraction minerals with the large particle size obtained through second screening, second enrichment is carried out according to the density, and second concentrate is obtained; small-particle-size fourth-particle-size minerals obtained through second screening and the second concentrate are graded according to a preset particle size grading rule, multi-stage jigging ore separation is carried out, third enrichment is carried out according to the density, and third concentrate is obtained; and after multiple times of enrichment, the third concentrate is ground and subjected to mineral separation, and target concentrate is obtained. Through multi-stage crushing, dense medium ore dressing according to density and multi-stage jigging ore dressing, multiple enrichment is carried out, the ore dressing efficiency is effectively improved, the ore grinding amount of grinding is reduced, the grinding cost is reduced, and the production cost is reduced.

The application provides a copper-molybdenum smelting slag multi-metal collaborative recovery method based on composite conditioning and external field strengthening, and relates to the field of comprehensive utilization of non-ferrous metal secondary resources. The method comprises the following steps: mixing liquid copper-molybdenum slag and a composite conditioning agent to obtain a mixture; in low-frequency alternating electromagnetic field strengthening treatment, the mixture is subjected to smelting reaction to obtain flue gas, molten slag and matte phase droplets; the matte phase droplets are cooled and ground to obtain ground matte phase; under alkaline conditions, a'mixed roughing- asynchronous separation' process is adopted, the ground matte phase and a collector are mixed for roughing to obtain copper-molybdenum mixed rough concentrate; the copper-molybdenum mixed rough concentrate and an inhibitor are mixed for cleaning to obtain copper concentrate and molybdenum concentrate, and finally, the copper recovery rate is greater than or equal to 92%, the molybdenum recovery rate is greater than or equal to 95%, and the smelting slag is deeply depleted and harmlessly disposed.

The invention belongs to the field of mineral resource processing, and particularly relates to a seabed deep-sea polymetallic nodule pretreatment and valuable element extraction method, which comprises the following steps: carrying out rapid heating and heat preservation pretreatment on a mixed material containing seabed deep-sea polymetallic nodule, a carbon material and an additive by adopting an electrified resistance heating mode to obtain a pretreated material; wherein the temperature rise rate of rapid temperature rise is 100-500 DEG C / s; the pretreatment temperature is 800 to 1000 DEG C; the additive comprises at least one of alkali metal salt, alkaline earth metal salt or ammonium salt. According to the method, the seabed deep-sea polymetallic nodule, the carbon material and the additive are innovatively subjected to instantaneous heating pretreatment, so that the physicochemical structure of the seabed deep-sea polymetallic nodule can be optimized, the subsequent leaching behavior of the seabed deep-sea polymetallic nodule is further optimized, and the extraction rate of valuable elements of the seabed deep-sea polymetallic nodule is improved.

The present application relates to a process for separating chemical elements M1, M2 and / or M3 contained in a solid sample, such as end of life batteries or black masses, wherein M1 is an alkali metal, M2 is a transition metal and M3 is aluminum.

The invention discloses a method for recovering metal by reducing deep-sea polymetallic oxidized ore through high-temperature hydrogen plasma, which comprises the following steps: dehydrating and drying the deep-sea polymetallic oxidized ore collected at the seabed, then adjusting the binary alkalinity of the deep-sea polymetallic oxidized ore to 0.15-0.20 (the binary alkalinity represents the mass ratio of CaO to SiO2), and smelting by using a hydrogen plasma electric arc furnace, and after smelting is finished, a melt is poured out, smelting slag and smelting alloy are separated, and nickel-copper-cobalt-iron smelting alloy and manganese-rich slag are collected. And finally, the high-value alloy and the manganese-rich slag are obtained in one step through separation of the slag and the metal alloy.

This invention belongs to the field of deep-sea resource development and intelligent robot technology, specifically relating to a planktonic multi-legged ore-collecting robot and method with autonomous sensing, positioning, and grasping functions. This invention is used for low-disturbance, high-efficiency collection of discontinuous and unevenly distributed mineral resources such as polymetallic nodules and cobalt-rich crusts in complex deep-sea terrain. It includes a biomimetic multi-legged pressure-resistant shell module, a multimodal autonomous sensing and positioning system, a multi-legged cooperative flexible grasping system, an intelligent buoyancy and cooperative propulsion system, an autonomous control system, an energy management module, and a data processing and storage unit. This invention employs a composite movement mode combining a biomimetic multi-legged structure and planktonic drive, enabling intelligent identification and compliant grasping of ore, avoiding the collection of waste rock, and improving resource recovery grade and economic benefits.