55 results about "Tungsten ore" patented technology

The invention discloses a tungsten deposit deep edge metallogenic prediction method based on machine learning, and particularly relates to the technical field of geological prediction and data processing. The method comprises the following steps: acquiring multi-source geological data, constructing a multi-dimensional space grid, and dividing candidate prediction units; quartz vein density, alteration indexes, geochemical combination anomaly weights and high-frequency magnetic anomaly waveform features are extracted, and an ore control feature tensor matrix is constructed; extracting a spatial dependency relationship among the candidate units based on a graph neural network, constructing a metallogenic potential prediction model, and outputting a metallogenic probability graph and a metallogenic hot spot graph; model parameters and feature weights are dynamically optimized through spatial superposition analysis and an abnormal response recognition mechanism; according to the method, the precision and efficiency of deep edge tungsten ore prospecting can be remarkably improved, and good self-adaptability and popularization and application value are achieved.

The invention discloses an intelligent prediction method and system for a tungsten ore metallogenic target area, and relates to the technical field of metallogenic target area prediction. An intelligent prediction system for a tungsten ore metallogenic target area comprises a data mapping module, a metallogenic characteristic module, a metallogenic map module, a prediction feedback module, an ore deposit prediction module and a target area output module. According to the method, a prediction-discovery feedback loop is designed under the support of a mineralization mechanism knowledge graph, and a model blind area and a knowledge conflict area are identified by utilizing hierarchical prediction of first-round multi-scale interaction and an ore deposit scale prediction result of cross-scale collaborative optimization; and mining geologic feature space association rules by adopting a constraint-based causal relationship discovery algorithm in a blind area of the model, and updating map inference rules after confirmation by geological experts, so that dynamic evolution of the mineralization mechanism knowledge map is realized, and the predictive ability for new-type ore deposits and atypical mineralization is improved.

The invention discloses an advanced treatment method of tungsten beneficiation wastewater, which is characterized in that a composite flocculant is adopted to flocculate the tungsten beneficiation wastewater, and the composite flocculant is mainly composed of cationic polyacrylamide, a flocculant A and lignocellulose, the flocculant A comprises at least one of polyferric sulfate, polyaluminum chloride, polyaluminum ferric chloride, polyaluminum ferric sulfate, ferric sulfate, ferrous sulfate and aluminum chloride. According to the advanced treatment method for the tungsten beneficiation wastewater, under the action of the composite flocculant, the cost of a treatment agent can be reduced to about 0.16-0.20 yuan / m < 3 >, the cost reduction amplitude is as high as 80% or above, the treatment time can be shortened to be within 10 min, the precipitation time is greatly shortened, meanwhile, suspended solids in the wastewater can be effectively removed, actual production requirements are met, and the method is suitable for industrial production. The method has the advantages of low treatment cost, high treatment efficiency, good removal effect, good adaptability and the like, can realize advanced treatment of the tungsten beneficiation wastewater, and is high in use value and good in application prospect.

The application discloses a method for co-enriching tungsten ore and rutile, and belongs to the technical field of ore dressing. The method comprises the following steps: crushing, grinding, removing iron and removing sulfur from a tungsten-titanium associated ore in sequence to obtain a desulfurized tailing ore slurry; after pH adjustment, metal ion-hydroxamic acid complex is used as a collector to perform tungsten-titanium mixed flotation on the desulfurized tailing ore slurry to obtain a tungsten-titanium mixed concentrate; after removing a reagent, fatty acid is used as a collector and aluminum sulfate is used as an inhibitor to perform tungsten ore flotation on the tungsten-titanium mixed concentrate, and the flotation concentrate is a tungsten concentrate, and the flotation tailings are a titanium concentrate. The method can realize efficient separation and recovery of tungsten ore and rutile in the tungsten-titanium associated ore, and truly realizes the synergistic extraction of tungsten and titanium resources.

The invention belongs to the technical field of mineral separation, and particularly relates to a method for improving the tungsten recovery rate through ceramic ball regrinding and recleaning of coarse-grain table tailings. According to the method, coarse grain raw materials are subjected to ore grinding to obtain an ore grinding product, the coarse grain raw materials comprise coarse grain table tailings, ore grinding media used for ore grinding comprise steel balls and ceramic balls, the filling rate of the steel balls is 16-20%, and the filling rate of the ceramic balls is 22-25%; and the ore grinding products and the scavenging table middlings are screened and classified, undersize products and oversize products are obtained, the oversize products are returned for ore grinding, the undersize products are sequentially subjected to flotation and table roughing, and tungsten concentrate is obtained. According to the method, the argillization degree of the tungsten ore can be controlled from the source, the monomer dissociation degree of useful minerals can be improved, the adverse effect of iron pollution on the flotation desulfurization procedure is reduced, and the method has important significance in improving the comprehensive recovery rate of tungsten resources.

The utility model discloses a tungsten ore geological sampling device which comprises a portal frame, a first electric telescopic rod fixedly penetrates through the upper portion of the portal frame, a lifting frame is installed at the telescopic end of the first electric telescopic rod, and a driving motor is installed on the inner bottom face of the lifting frame. The output end of the driving motor is provided with an auger through a coupler, mounting plates are mounted on the two sides of the interior of the portal frame, a second electric telescopic rod fixedly penetrates through the upper portions of the mounting plates on the left side, a lifting box is mounted at the telescopic end of the second electric telescopic rod, and a conveying cylinder penetrates through the upper portion of the lifting box through a bearing; a guide rod slidably penetrates through the upper portion of the right mounting plate, and the lower end of the guide rod is fixedly connected with the upper portion of a lifting box. The tungsten ore geological sampling device has the beneficial effects that the tungsten ore geological sampling device is provided with the lifting box and the conveying cylinder, various sampling materials can be classified and stored through the lifting box and the conveying cylinder, and the use practicability of the tungsten ore geological sampling device is improved.

The utility model relates to a multistage tungsten ore sorting device in the technical field of ore sorting equipment, which comprises a support, and a plurality of sorting boxes are sequentially arranged on the support. Screens are arranged in the sorting boxes respectively, filtering holes of the multiple screens are sequentially decreased, and a discharging opening of each sorting box communicates with a feeding opening of the adjacent sorting box. Wherein a magnetic separation assembly is arranged at the feeding port of one separation box and comprises a rotating shaft and a stepping motor, the two ends of the rotating shaft are rotationally connected with the inner walls of the separation boxes through bearings correspondingly, one end of the rotating shaft penetrates through the separation boxes and then is connected with the stepping motor, and a plurality of magnetic separation pieces are evenly fixed to the rotating shaft in the circumferential direction. The tungsten ore multi-stage separation device is reasonable in structure, easy to use, capable of conducting multi-stage separation on tungsten ore and removing magnetic impurities, capable of improving the separation effect, high in separation efficiency and good in separation effect.

The invention belongs to the technical field of tungsten ore beneficiation, and particularly relates to a method for recovering low-grade tungsten minerals in tungsten tailings. The method comprises the following steps: performing flotation desulfurization on grinding ore pulp of tungsten tailings to obtain sulfur concentrate and flotation desulfurization ore pulp; tungsten flotation roughing is conducted on the flotation desulfurization ore pulp, and flotation tailings and tungsten roughing concentrate are obtained; the tungsten flotation rough concentrate is subjected to first tungsten flotation fine selection, and first tungsten flotation concentrate and first middling are obtained; the first tungsten flotation concentrate is subjected to second tungsten flotation concentration, and second tungsten flotation concentrate and second middling are obtained; the second tungsten flotation concentrate is subjected to centrifugal concentration, and tungsten centrifugal concentration ore and centrifugal tailings are obtained; and carrying out table concentration on the tungsten centrifugal concentrate to obtain tungsten concentrate and table tailings. The method can effectively realize efficient recovery of the low-grade tungsten minerals in the tungsten tailings. Meanwhile, the recovery method provided by the invention has the advantages of simple process flow and high beneficiation recovery rate, and an effective method can be provided for efficient utilization of tungsten tailing resources.

The invention discloses a method for green preparation of high-purity ammonium paratungstate from tungsten ore, and relates to the technical field of tungsten smelting, and the method comprises the working procedures of tungsten ore pretreatment, green ammoniacal decomposition, deep purification of ionic liquid, ultrasonic-assisted cooling crystallization, mother liquor recycling and ammonium paratungstate drying. Reacting with an ammonium carbonate-ammonia water mixed leaching agent, and breaking tungsten ore crystal lattices through a weakly alkaline system to dissolve out the tungsten element; the method comprises the following steps: extracting and purifying a crude ammonium tungstate solution by using a functionalized phosphate-based ionic liquid, and selectively removing impurities; cooling and crystallizing the purified solution under the regulation and control of an ultrasonic field, and inducing growth by combining with a nanocrystalline seed; the crystallization mother liquor is subjected to reduced pressure ammonia distillation, carbonization reaction and resin adsorption to realize recycling of ammonia, ammonium carbonate and residual tungsten; and finally, carrying out segmented drying to obtain a high-purity ammonium paratungstate product.

The invention discloses a method for preparing a tungsten compound from artificial tungsten ore, which comprises the following steps: reacting sulfuric acid with the artificial tungsten ore to leach tungsten, and controlling the reaction conditions that the pH is 0.2-4.0, the temperature is 25-100 DEG C, the reaction time is 30 minutes to 6 hours, and the liquid-solid ratio is 1: 1-10: 1. And obtaining a metatungstate leaching solution after the reaction is completed, so that efficient leaching of tungsten is realized. And further performing purification and impurity removal on the solution to obtain a pure metatungstate solution. The pure metatungstate solution can be used for preparing different pure tungsten compound products such as solid metatungstate, phosphotungstic acid, ammonium phosphotungstate, tungsten oxide, ammonium metatungstate, ammonium paratungstate and tungstic acid. According to the technology, efficient leaching of tungsten under the mild condition can be achieved, high acid and high alkali are not needed in the whole process, and energy consumption and emission are greatly reduced; the obtained leachate is easy to purify to obtain a pure metatungstic acid solution, and the pure metatungstic acid solution can be directly used as a platform intermediate to flexibly prepare various tungsten chemicals.

The invention relates to the technical field of production technology regulation, in particular to an acid pretreatment method and system for tungsten ore decomposition, and the method comprises the following steps: performing tungsten ore decomposition operation on a tungsten ore raw material to obtain a first tungsten product and an acid waste liquid; carrying out acid-base neutralization treatment on the acid waste liquid to obtain neutralized waste liquid, and obtaining the use amount of an alkali solution; obtaining the predicted tungsten product amount in the neutralized waste liquid; using an acid process treatment parameter-result relation model to minimize the usage amount of the alkali solution to obtain an acid treatment parameter-residual tungsten relation when the usage amount of the alkali solution is the lowest, and minimize the predicted tungsten product amount to obtain an acid treatment parameter-pollutant relation when the predicted tungsten product amount is the lowest; and performing weighted calculation on the acid treatment parameter-residual tungsten relation and the acid treatment parameter-pollutant relation to obtain an acid treatment parameter-comprehensive value relation, and identifying the acid treatment parameter corresponding to the lowest comprehensive value to obtain an updated acid treatment parameter. The method can improve the efficiency and environmental protection property of acid-process tungsten ore pretreatment.

The utility model relates to the technical field of ore mining and crushing, and discloses a novel tungsten ore mining and crushing device which comprises a crushing box body, a recycling box arranged at the bottom of an inner cavity of the crushing box body and a crushing assembly arranged in the middle of an inner cavity of the recycling box. A feeding channel is formed in the middle of the top wall face of an inner cavity of the crushing box in a penetrating mode, arc-shaped grooves are symmetrically formed in the left side wall face and the right side wall face of the feeding channel, and protection mechanisms are arranged in the two arc-shaped grooves. And the protection mechanism comprises two rotating shaft rods rotationally connected to the interiors of the two arc-shaped grooves and two sets of protection baffles symmetrically and fixedly installed on the outer wall faces of the two rotating shaft rods, and an adjusting mechanism for driving the two rotating shaft rods to rotate is arranged on the rear wall face of the crushing box body. By arranging the protection mechanism and the adjusting mechanism, tungsten ore can be fully discharged to be crushed, and the practicability of the equipment is improved.

The utility model belongs to the technical field of tungsten ore mining, particularly relates to a hard rock double-edge cutting drill bit for tungsten ore mining, and aims to solve the problems that the conventional drill bit is low in drilling efficiency and quick in abrasion, the load of a single drill bit is concentrated, thermal fatigue is easy to aggravate, the maintenance cost of an integral structure is high, and the cooling coverage is insufficient. Comprising a first drill bit part and a second drill bit part, the first drill bit part is fixedly installed at one end of the second drill bit part, and the outer diameter of the second drill bit part is larger than that of the first drill bit part. The stepped sawtooth blade can shear and crush rock mass, and the reaming precision is improved; the modular connection structure facilitates quick replacement of worn parts; the double-path cooling system covers the whole working face to complete cooling and chip removal. The edge wear-resistant convex balls roll and trim the hole wall, drill jamming can be effectively prevented, and the service life of the drill bit is prolonged.

The utility model relates to the technical field of pre-selecting and waste-throwing devices, and discloses a tungsten ore full-dry type pre-selecting and waste-throwing device which comprises a fixed connecting seat, a pre-selecting and waste-throwing device body is installed on the top of the fixed connecting seat, and an access door is hinged to the outer side of the pre-selecting and waste-throwing device body through a hinge. According to the utility model, the auxiliary pre-selecting and waste-throwing mechanism is arranged, and the feeding frame reciprocates in the feeding hopper, so that the feeding frame can periodically impact tungsten ores, and cakes or adhesion formed in the transportation or stacking process of the tungsten ores can be effectively crushed, so that the tungsten ores are uniformly distributed in a single layer and enter a sorting area; the problem that the sorting precision is reduced due to large blocks or clots is reduced, so that the recognition accuracy of useful minerals and waste rocks is improved; and by arranging the locking mechanism, unlocking of the access door is conveniently completed, a user can open the access door easily to maintain the interior of the pre-selection waste throwing device body, and the purpose that the pre-selection waste throwing device is easy to maintain is achieved.

The invention provides a tungsten content detection method and system based on a gradient algorithm, and the method comprises the steps: obtaining different types of tungsten ore samples, and detecting spectral feature data, microstructure image data and element composition detection data corresponding to the tungsten ore samples in real time through a preset device; integrating the data to generate sample feature data, and creating a corresponding dynamic gradient correction model in real time according to the sample feature data; dynamically dividing a plurality of content gradient intervals according to the distribution density of the sample characteristic data through a dynamic gradient correction model and a preset gradient adjustment algorithm; and acquiring actual sample characteristic data of actual tungsten ore, and outputting a corresponding target content gradient interval through the dynamic gradient correction model according to the actual sample characteristic data, so as to extract the target content in the target content gradient interval. According to the method, the tungsten content in the ore can be accurately detected, and the detection efficiency is correspondingly improved.

The invention discloses a spiral chute mining device for tungsten ore mining and a using method, and relates to the field of spiral chutes, the spiral chute mining device comprises a base, a stand column is fixedly arranged at the end of the base, a spiral chute body is fixedly arranged on the outer surface of the stand column, and a sorting assembly is assembled at the end of the stand column and located above the path of the spiral chute body. Comprising a scraping plate and a conical block, dredging acting force is applied to screened retentate through the scraping plate, and meanwhile the conical block is used for adjusting the circulation section of the spiral chute body. According to the spiral chute mining device for tungsten ore mining and selection and the using method, dredging acting force is applied to accumulated minerals through the separation assembly, the conveying opening can be prevented from being blocked, and local deposition is reduced; and meanwhile, the overall liquidity of a conveying groove channel can be adjusted according to the mineral accumulation state, concentration distribution is detected through the opening degree of the conveying end, differential adjustment is reduced, stable and uniform hydraulic conditions are provided for separation of light and heavy minerals, and therefore the mixing rate is reduced.

The utility model relates to copper-sulfur tailing magnetic separation tungsten recovery beneficiation equipment, which belongs to the technical field of ore recovery and comprises a rack, a driving motor fixedly mounted on the outer side of the rack and a magnetic separation roller rotatably mounted on the inner side of the rack, a belt conveyor is arranged on one side of the rack, and a material distribution mechanism is arranged above the magnetic separation roller; the material distributing mechanism comprises a supporting frame installed on the top of the rack and a material guiding plate installed on the top of the supporting frame, a first partition plate and a second partition plate are fixedly installed on the outer wall of the material guiding plate, a connecting rod is movably connected between the first partition plate and the second partition plate in an inserted mode, and an electric push rod is arranged at one end of the connecting rod. According to the copper-sulfur tailing magnetic separation tungsten recovery beneficiation equipment, falling of tailings is buffered through cooperation of the material guide plate and the material distribution plate, accumulation is reduced, it is guaranteed that magnetic minerals in the tailings are efficiently adsorbed by the magnetic separation roller, the screening efficiency is improved, and practicability is high.

The application discloses a tungsten ore mining and sorting combined device, which comprises a mining machine, the mining machine comprises a crushing bin, a moving assembly, a mining bucket and a screening bin, the mining bucket is located at the front side of the mining machine, the screening bin is fixed above the base, the top opening of the screening bin receives the tungsten ore mined from the mining bucket, the screening bin is sequentially provided with a first screen mesh, a second screen mesh, a turnover plate and a plurality of sorting hoppers from top to bottom, the second screen mesh comprises a vibration plate and an expansion plate, the vibration plate is a hollow plate, the expansion plate can be accommodated in the vibration plate or extended out of the opening of the vibration plate, the tungsten ore screened through the first screen mesh and the second screen mesh is guided to fall into different sorting hoppers through left-right turnover of the turnover plate. The application combines the mining and sorting of the tungsten ore, realizes the real-time screening of the tungsten ore in the mining process, and effectively classifies the ore according to the size of the ore particle through the multi-layer screen mesh structure and the plurality of sorting hoppers, so that the screening effect is optimized.

The invention relates to the technical field of tungsten ore smelting, and provides a method for smelting ammonium paratungstate from tungsten by recycling wastewater. The method comprises the following steps: mixing scheelite and wolframite mixed ore with a sodium hydroxide solution, carrying out alkali autoclaving to obtain a crude sodium tungstate solution, carrying out impurity removal, molybdenum removal, extraction and reverse extraction to obtain an ammonium tungstate solution, and carrying out evaporative crystallization on the ammonium tungstate solution to obtain ammonium paratungstate; after sodium sulfate wastewater generated by extraction is subjected to activated carbon adsorption and impurity removal, a bipolar membrane is adopted for electrodialysis treatment, a sulfuric acid solution and a sodium hydroxide solution are obtained, the sulfuric acid solution is used for regenerating the extraction agent, and the sodium hydroxide solution is used for alkali autoclaving after being concentrated. According to the method provided by the invention, the sodium sulfate wastewater can be completely returned to be used in the technological process, and no high-salinity wastewater is discharged in the whole process, so that efficient resource recycling of the wastewater is realized, and environmental pollution is reduced; moreover, the method can treat scheelite and wolframite at the same time, the treatment process is short, and the adaptability is wide.

This invention discloses a method for treating scheelite beneficiation wastewater based on gradient desiliconization and micro / nano bubble oxidation. The method includes the following steps: adding lime to the scheelite beneficiation wastewater for coagulation and sedimentation; collecting the primary supernatant after sedimentation separation; adding a calcium source for deep desiliconization; introducing micro / nano bubbles for oxidation treatment; removing scum from the upper layer of the water system; and adjusting the pH of the effluent to complete the deep treatment of the scheelite beneficiation wastewater. This method, through the synergistic effect of "gradient desiliconization" and "micro / nano bubble oxidation," can achieve simultaneous deep removal of silicon and organic pollutants from scheelite beneficiation wastewater. The treated effluent is of stable quality and can be directly reused in the tungsten flotation process, realizing closed-loop wastewater recycling and resource utilization. It is highly efficient, economical, has high practical value, and promising application prospects.

The application relates to a tungsten-molybdenum oxide ore collector and application thereof, and belongs to the field of ore-dressing reagents. The problems that the collector for the flotation of the molybdenum-tungsten oxide ore associated with calcium-containing gangue minerals in the prior art is poor in selectivity, the flotation process is complex, the flotation condition is difficult to control, and the collector cannot be degraded to pollute the environment are solved. A kind of tungsten-molybdenum oxide ore collector is used for the flotation of low-grade tungsten-molybdenum oxide ore, and the chemical structural formula of the collector is as follows: wherein R is an alkyl group with 12-18 carbon atoms; X + is an inorganic cation or an organic cation. The molybdenum-tungsten oxide ore is efficiently and highly-recoverably floated.

The invention belongs to the technical field of mineral separation, and particularly relates to a screening process for useful minerals in waste rock.The screening process comprises the following steps that S1, an intelligent mineral separator is adopted for screening raw ores, and qualified ores and first waste rocks are obtained; s2, screening the first waste rocks to obtain second waste rocks and tailings; s3, a movable sieve jig is adopted for treating the second waste rock, first concentrate and second concentrate are obtained, and a diaphragm of the movable sieve jig adopts a 10.00 R20 steel wire tire; according to the method, the material of the jigger diaphragm is replaced, and the parameters of the movable sieve jigger are correspondingly adjusted, so that medium-grain minerals in waste rocks generated when tungsten ores are screened by the intelligent concentrating machine can be recovered, the metal loss is reduced, and the recovery rate and the resource utilization rate of useful minerals are improved.

The application belongs to the technical field of hydrometallurgy, and particularly relates to a method for solidifying calcium and removing sulfate radicals from tungsten ore calcined by sulfuric acid before ammonia dissolution, which comprises the following steps: S1, obtaining calcium-containing tungsten ore, mixing the calcium-containing tungsten ore with concentrated sulfuric acid, calcining to obtain a calcination product, cooling the calcination product, water immersion, and filtering to obtain a first solid residue and a first filtrate; S2, mixing the first solid residue with water to obtain a first slurry, adding an ammonium salt reagent to the first slurry under stirring to obtain a second slurry after a first reaction, and performing solid-liquid separation on the second slurry to obtain a second solid residue and a second filtrate; and S3, performing ammonia dissolution and filtering on the second solid residue to obtain an ammonium tungstate solution and a third solid residue. The application realizes chemical solidification of calcium ions and efficient separation and removal of sulfate ions by adding an ammonium salt reagent, creates a pure and sulfate-free efficient reaction environment for subsequent ammonia dissolution, and fundamentally guarantees high tungsten recovery rate and product purity.

The present application relates to a kind of focused p-phenylenediamine polyphosphate and its preparation method and application, the structural general formula of the compound is as follows:;Wherein, m=1000-2000, n=1000-2000, [M] is metal ion or NH4 + The compound provided by the present application is applied in mineral flotation, and shows excellent performance in copper-lead separation and tungsten ore beneficiation process.

The present application belongs to the technical field of metal roughing, especially a column type short process tungsten roughing process and equipment, aiming at the problem that the existing roughing equipment cannot automatically add additives, the following scheme is proposed, the roughing process includes the following steps: the tungsten roughing raw ore is fed into the slurry mixing barrel, and the activator is added at the same time, after slurry mixing, it enters the slurry mixing barrel, the inhibitor is added in the slurry mixing barrel for continuous stirring, then the ore slurry enters the slurry mixing barrel, and the collector is added therein for stirring to prepare the flotation feed, and the flotation feed is conveyed to the roughing flotation column by the roughing feed pump for flotation separation. The column type short process tungsten roughing process and equipment disclosed in the present application can supplement the additives in time after the tungsten ore is added in the mixing barrel by using the quantitative adding module, the downtime of the equipment is reduced, the whole preparation process is kept coherent, the smoothness of preparation is ensured, and the efficiency of the equipment for preparing the roughing feed is improved.

The application belongs to the technical field of mineral processing, and particularly relates to a tungsten ore fine sludge separation process, which comprises the following steps: S1, obtaining tungsten ore fine sludge, and obtaining desulfurized concentrate by desulfurizing the tungsten ore fine sludge; S2, obtaining first flotation concentrate by first-time flotation of the desulfurized concentrate; S3, obtaining magnetic separation concentrate by magnetic separation of the first flotation concentrate; S4, obtaining gravity separation concentrate by table concentration of the magnetic separation concentrate; and S5, obtaining second-time flotation concentrate by second-time flotation of the gravity separation concentrate. The application solves the problem of recovery of -20 mu m micro-fine particles by coupling process of desulfurization, two-stage flotation, magnetic separation and table concentration, adopting a composite reagent system of phenylpropylene hydroxamic acid, octyl hydroxamic acid and sodium oleate, and using a cyclone micro-bubble flotation column and a high-speed shearing mixer, so as to improve the grade and recovery rate of tungsten concentrate, and the content of WO3 in the separated tungsten concentrate is greater than or equal to 11 wt%, the content of sulfur mineral impurities is less than or equal to 0.4 wt%, and the recovery rate of WO3 is greater than or equal to 90%.

The invention discloses a mud-resistant and low-temperature-resistant collecting agent for recovering molybdenum tungsten oxide ore from molybdenite flotation tailings, preparation and application, and relates to the molybdenite flotation separation technology, and the collecting agent is formed by compounding 10-15% by mass of monobasic fatty alcohol, 30-50% by mass of sodium oleate, 10-15% by mass of polyoxyethylene ether and 20-50% by mass of hydroximic acid. During flotation, molybdenite raw ore is ground until-0.074 mm accounts for 80%, flotation is carried out, molybdenite rough concentrate and tailings are obtained, a regulator and a collecting agent are sequentially added into the obtained tailings, stirring is carried out for 10-30 minutes, then one-time roughing, one-time scavenging and two-time heating concentration are carried out, and tungsten concentrate is obtained. Compared with a single sodium oleate collecting agent, the collecting agent has the advantages that the molybdenum recovery rate and the tungsten recovery rate can be increased by more than 23% and 19% respectively, and the combined collecting agent is simple in composition, wide in agent source, easy to operate, free of desliming during flotation and particularly suitable for flotation application of low-grade high-mud-content molybdenum tungsten oxide ore.

This utility model relates to a blasting hole positioning device for tungsten mines, belonging to the field of mining engineering equipment technology. This device improves upon the low efficiency of single-point positioning. A mounting base is fixed to the top of a tripod via a screw, and the mounting base has a movable cavity. A screw shaft is connected to the bottom of the mounting shell via a connecting frame. The screw shaft rotates to mount the mounting frame, and a movable plate is fixed to the bottom of the mounting frame. The movable plate is embedded in the movable cavity to achieve fine-tuning of the plane. A positioning plate with a matrix of light-transmitting holes is inserted into the front of the mounting shell, and an illumination lamp is installed inside. Light is projected onto the mine wall through the light-transmitting holes, creating multiple positioning light spots. A screw shaft is threaded to a tightening nut. The bottom of the movable plate has a stop plate and an inclined connecting plate. Tightening the nut pushes the inclined structure to fix the stop plate in place through friction. This device achieves synchronous marking of hole positions through the multi-hole positioning plate, and, in conjunction with the plane adjustment of the movable plate and the angle adjustment of the connecting frame, reduces the number of repeated adjustments. It is mainly used for rapid positioning of blasting holes in tungsten mines.

The invention discloses a diamino-dihydroximic acid collecting agent and application thereof, and belongs to the technical field of mineral flotation. The collecting agent has two amino groups and two hydroxamic acid functional groups, efficient synergy of chelation of the hydroxamic acid groups and electrostatic adsorption of the amino groups is achieved through an intramolecular multi-site synergistic adsorption mechanism, and the adsorption strength and stability of the collecting agent on the surfaces of minerals are remarkably enhanced. The collecting agent is suitable for flotation separation of various metal minerals such as ilmenite, zinc oxide ore, tungsten ore, lead oxide ore, cassiterite and rare earth, has the advantages of being high in collecting capacity, high in acting efficiency and wide in application range, effectively improves the recovery rate of complex metal mineral resources while reducing the dosage of the agent, and is wide in industrial application prospect.

The invention belongs to the technical field of tungsten ore beneficiation, and particularly relates to a pre-enrichment beneficiation method for low-grade mixed tungsten ore. The tungsten ore is sequentially subjected to ore grinding, magnetic separation and flotation, and tungsten rough concentrate and flotation tailings are obtained. The pre-concentration beneficiation method can be applied to efficient pre-concentration of micro-fine-particle wolframite, scheelite and scheelite and wolframite mixed ore, and favorable conditions are created for follow-up concentration. According to the pre-enrichment beneficiation method provided by the invention, the flotation process is reasonably set, and meanwhile, the reagents used in the flotation step are optimized, so that the effective recovery rate of tungsten can be greatly improved, and efficient comprehensive utilization of micro-fine tungsten particles is realized. In conclusion, the pre-concentration beneficiation method has the advantages of being simple in process, friendly to the environment and high in beneficiation recovery rate.