268 results about "Baryte" patented technology

The invention relates to the technical field of mineral processing data processing, in particular to a preparation method of a high-calcium fluorite and barite paragenic ore combined inhibitor, which comprises the following steps: collecting multi-source process mineralogy data output by an X-ray fluorescence spectrometer, an automatic mineral analyzer and the like, converting the multi-source process mineralogy data into a structured format, and constructing a process mineralogy database; based on historical data of a database, a random forest algorithm is adopted to train a correlation model, the correlation rule of mineral characteristics such as calcite content, fluorite particle size distribution and barite monomer dissociation degree and the inhibitor ratio is learned, and parameters of the optimization model are fed back through a flotation test. The combined inhibitor solves the problem of selective separation caused by similar surface properties through a synergistic effect of covering active sites of fluorite calcium by modified water glass, regulating active sites of barite barium by citric acid and assisting in enhancing inhibition by modified starch, and solves the problem of low efficiency of multi-source data integration through structured data processing and model closed-loop optimization; the flotation separation efficiency and the concentrate grade are improved.

The invention discloses a beneficiation method for efficiently recovering barite from heat treatment drilling waste. The beneficiation method comprises the following steps that (1) the drilling waste containing the barite is subjected to wet screening classification; (2) performing magnetic separation on the undersize product to obtain a magnetic product and a non-magnetic product; (3) carrying out primary roughing and primary concentration on the non-magnetic product to obtain a barite powder product 1; and (4) the roughing tailings are subjected to scavenging for three times, scavenged concentrates are combined and then subjected to fine selection for two times, and a barite powder product 2 is obtained. According to the method, barite in the heat treatment drilling waste is efficiently recycled by adopting a beneficiation method, two different grades of barite powder products are obtained and can serve as drilling fluid raw materials to be recycled, resource utilization of the waste is achieved, and meanwhile environmental hazards are reduced.

The invention discloses a method for estimating barite ore density by using BaSO4 content, and relates to the technical field of ore density detection, and the method comprises the following steps: collecting a barite ore sample, and pre-treating the barite ore sample; based on the pretreated barite ore sample, component analysis is carried out through an X-ray fluorescence spectrum technology, and the BaSO4 content is obtained; measuring the pretreated barite ore sample through an experimental measurement method to obtain the dynamic density of the barite ore sample; based on the BaSO4 content and the dynamic density of the barite ore sample, a corrected density value is obtained through a nonlinear weighting method; constructing a density detection model based on the random forest model; and based on the corrected density value and the BaSO4 content, obtaining an ore density detection value through a density detection model. According to the method, the BaSO4 content and the dynamic density of the ore are combined, the corrected density value is obtained through the nonlinear weighting method, and the accuracy, reliability and efficiency of density detection are improved.

The invention relates to the technical field of barite production equipment, in particular to an environment-friendly dust removal device for a barite powder processing and crushing device. The filter unit comprises two filter cavities distributed in the width direction of the shell, a filter screen is rotationally arranged in each filter cavity, the rotating axis of each filter screen is parallel to the vertical direction, an air inlet is formed in the connecting position of the shell and the crushing device, and an opening is formed in the side, facing the air inlet, of each filter cavity; a baffle is movably arranged at an opening of the filter cavity in the width direction of the shell, the size of the baffle is the same as that of the opening of the single filter cavity, a driving unit for driving the baffle to move in the width direction of the shell is arranged on the baffle, and an air exhaust unit for exhausting air in the filter cavity is arranged in the filter cavity; and air entering the filter cavity from the opening of the filter cavity passes through the filter screen and then is exhausted by the air exhaust unit. The service life of the filter screen is prolonged, and the dust removal efficiency is improved.

The invention provides a desulfonation low-viscosity high-shear strong-inhibition water-based drilling fluid, and belongs to the technical field of oil field chemistry of oil and gas drilling engineering. The de-sulfonation low-viscosity high-shear strong-inhibition water-based drilling fluid is prepared from the following raw materials in parts by mass: 100 parts of water, 0.5 to 1.0 part of a pH regulator, 1 to 3 parts of a lubricant, 0.5 to 0.7 part of a shear strength improving agent, 2 to 4 parts of a filtrate reducer, 2 to 4 parts of an inhibitor, 5 to 15 parts of an auxiliary inhibitor, 1 to 3 parts of a dispersing agent and barite, the barite is not limited in parts, and the barite is added until the required density is reached. The desulfonation low-viscosity high-shear strong-inhibition water-based drilling fluid can effectively inhibit expansion and dispersion of formation water-sensitive minerals in a high-temperature water-sensitive formation environment, maintain the stability of a well wall, guarantee the cleanness of a well hole and improve the drilling efficiency, is environment-friendly and biodegradable, and meets green, safe and efficient drilling requirements.

The utility model relates to the technical field of barite ore grinding and screening devices, in particular to a barite ore grinding and screening device which comprises a screening box, an inclined screen is arranged in the middle of the interior of the screening box, vertical plates are arranged on the two sides of the screen, sliding grooves are formed in the middles of the vertical plates, and lead screws are inserted into the sliding grooves. One end of the lead screw is inserted into a lead screw motor on the outer side of the screening box, and a sliding block is arranged on the lead screw. The ground powder screening device for barite ore has the beneficial effects that after a batch of ground powder of barite is screened, a lead screw motor starts to drive a lead screw inserted into a sliding groove in the middle of a vertical plate to rotate, so that a sliding block arranged on the lead screw starts to slide, and the ground powder of the barite ore is screened; and meanwhile, the bottom of the sliding block drives bristles on the inner side of the cleaning plate to be tightly attached to the lower surface of the screen through a spring, barite particles in a screen opening are ejected out, and meanwhile the sliding block drives a push plate to push out the barite particles accumulated on the screen from a push-out opening.

The invention belongs to the field of light low-carbon concrete, and discloses hydraulic low-carbon concrete containing barium sulfate barite as well as a preparation method and application of the hydraulic low-carbon concrete. The concrete is prepared from 42.5-grade Portland cement, barium sulfate barite powder, modified polypropylene fiber, industrial waste residue lightweight aggregate, boron carbide powder, nano silicon dioxide, a polycarboxylate superplasticizer, a composite exciting agent and water according to specific parts by weight. Wherein the barium sulfate barite powder is subjected to graded proportioning and calcination activation, the modified polypropylene fiber is treated by plasma and a silane coupling agent, the industrial waste residue lightweight aggregate is formed by compounding fly ash ceramsite and steel slag microbeads, and the composite exciting agent is composed of specific components. The concrete is high in compressive strength, low in dry density, excellent in neutron shielding and gamma ray attenuation performance and low in chloride ion diffusion coefficient. The preparation method comprises the steps of premixing modification, gradient stirring, vibration compaction and steam curing. The concrete is suitable for construction of a nuclear reactor containment, a radioactive waste repository and a nuclear medicine protection wall.

The invention relates to the technical field of production quality traceability, in particular to a barite powder production quality traceability-oriented data fusion method and a barite powder production quality traceability-oriented data fusion system. The method comprises the following steps: collecting mineral parameters of barite ores in raw ore sampling points as raw ore batch data; collecting monitoring data of the crusher; according to raw ore batch data and crusher monitoring data, the granularity change condition of barite is determined; collecting control data of the grinding device; determining the grain size refining condition of the barite according to the control data of the grinding device and the grain size change condition of the barite; dry packaging control data and packaging weighing results are collected; calculating the final particle size of the product based on the barite particle size refining condition, the drying packaging control data and the packaging weighing result; predicting a target quality index according to the final granularity of the product; and comparing index differences between the target quality index and the actually obtained quality inspection data of the finished product one by one so as to execute difference traceability. According to the invention, the quality controllability and tracing efficiency of barite powder production can be improved.

The invention discloses a surface lipophilic modified barite weighting material as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The surface lipophilic modified barite weighting material comprises barite and a surface modifier, and the surface modifier comprises a copolymer formed by polymerizing a monomer A, a monomer B, a monomer C and a monomer D. According to the invention, the lipophilicity of the barite is chemically modified by the surface modifier, and all monomers have a synergistic effect, so that when the grafted and modified barite weighting material is used as the weighting agent of the oil-based drilling fluid, the dispersity and the stability of particles in the oil-based drilling fluid can be improved, and the rheological property, the plugging property and the high-temperature resistance of the drilling fluid can be adjusted.

Described is a method for mitigating particulate settling in a drilling fluid. A set of rheological data for a first drilling fluid is obtained, where the set of rheological data includes a measured viscosity value. A thermal effect of the measured viscosity value is determined, and a predicted viscosity value for a second drilling fluid having a similar composition as the first drilling fluid is determined based on the thermal effect. Based on the predicted viscosity value, an amount of a thermochemical fluid to add to the second drilling fluid is determined to increase a temperature and a viscosity of the second drilling fluid such that settling of a particulate is mitigated.

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

The application discloses a kind of concrete crack self-repairing agent suitable for marine corrosion conditions, including component one and component two;The component one, component two are all core-shell structure;The outer shell of component one is polymer film;Inner layer includes the following components by mass percentage: 20%-30% barite powder, 50%-60% magnesium source, 20%-30% cement;The outer shell of component two is polymer film;Inner layer includes the following components by mass percentage: 20-30% barite powder, 5-10% microbial powder, 20-30% glucose, 20%-40% aluminum source, 10%-30% low-alkali cement.The repairing agent of the application is continuous grading solid particle pellet, and the fine aggregate of concrete is replaced with equal mass.By the synergistic effect of microbial mineralization and metal mineral hydration, the filling of concrete crack space and the solidification of invasive crack corrosion ions are realized, especially suitable for marine corrosion environment.

The invention discloses a method for separating and upgrading fine fluorite in rare earth tailings, which belongs to the technical field of fluorite production, and comprises the following steps of: mixing the rare earth tailings, and removing barite and pre-enriching by a hydrocyclone to obtain two products, namely settled sand and overflow; the desilting product is subjected to size mixing, a regulator, a fluorite activating agent, an inhibitor and a fluorite collecting agent are added in sequence, and treated ore pulp is obtained; adding the ore pulp into a flotation machine to obtain flotation foam and roughing tailings; the flotation froth is sequentially subjected to three times of fluorite concentration, and a first kind of fine-grain fluorite is obtained; and mixing the roughing tailings with middlings obtained by the later two times of fluorite concentration, performing size mixing, adding a regulator, a fluorite activating agent and an inhibitor, and performing scavenging to obtain a second kind of fine-grain fluorite and scavenged tailings. The separation efficiency in the flotation process is improved, the recovery rate and grade of the fine fluorite are improved, and meanwhile environmental pollution and resource waste are reduced.

The invention discloses a new-type barite deposit mineralization mode construction method based on a same sedimentary fault. The method belongs to the field of geological exploration and mineral resource prediction, and comprises the following steps: analyzing the earth crust cracking activity history of an earthquake-Hangjian broken basin, and recovering a basin'checkerboard 'structure prototype; by means of field geological survey and research, drilling engineering, geophysics, remote sensing geological big data and the like, north-east-east-direction and north-west-direction co-sedimentary fault networks are identified and modeled, and a deep metallogenic fluid rising and jet flow channel is determined; the metallogenic process is concluded into a hydrothermal jet flow stage and an underwater gravity flow deposition stage, deep fluid is revealed to rise, jet flow and precipitate along a fault, and an ore-rich zone of a composite seabed fan body group is formed; and a geochemical prospecting prediction model combining trace element and sulfur isotope characteristics is established. The method systematically clarifies a coupling mechanism of ore control of the same sedimentary fault, ore-forming fluid migration and gravity flow deposition, and provides a theoretical basis and a technical means for prospecting prediction of the barite deposit in the Hendan-Hangjian fault basin.

The invention provides sanding-free natural superfine barium sulfate powder as well as a preparation method and application thereof, and belongs to the technical field of inorganic chemical filler preparation. The preparation method comprises the following steps: sequentially carrying out grinding, ball milling and two-time grading on barite particles to prepare barite raw powder; and carrying out surface modification treatment on the barite raw powder, and cooling to obtain the sanding-free natural superfine barium sulfate powder. Wherein a composite modifier is added during surface modification treatment, and the composite modifier is prepared by compounding a stearic acid emulsion and a tetrakis-neo-alkoxy bis (didecyl phosphorous acid acyloxy) titanate coupling agent. The composite modifier modifies the barite raw powder, not only reduces the oil absorption value of the superfine barium sulfate, but also reduces the surface energy of the product through the bonding effect, improves the dispersity of the product and the adhesive force with downstream resin, and can achieve the use fineness required by the product through high-speed dispersion when being applied to the water-based industrial paint. And the production efficiency is effectively improved.

The invention provides a soilless phase reservoir protection water-based drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The drilling fluid is prepared from the following raw materials in parts by mass: 100 parts of water, 0.2-0.4 part of a first pH regulator, 1-3 parts of a deoxidant, 0.1-0.4 part of a tackifying and shear strength improving agent, 2-4 parts of a filtrate reducer, 4-6 parts of magnesium-aluminum hydrotalcite, 4-6 parts of micro-nano aluminum oxide, 4-6 parts of superfine calcium carbonate, 4-6 parts of a lubricant, 1-2 parts of a corrosion inhibitor and 70-660 parts of an inorganic salt weighting agent. The drilling fluid disclosed by the invention is excellent in high-temperature resistance, good in rheological property and excellent in filtrate loss reduction performance; the drilling fluid disclosed by the invention can be prepared into saturated CaCl2 and saturated CaBr2 systems, does not contain barite and clay, is high in mud cake acid solubility, has permeability recovery of more than 72% after plugging, is good in reservoir protection, and has potential of on-site large-scale application.

The invention relates to the technical field of ore washing, and particularly provides an ore washing device for barite powder raw material processing. Comprising a cleaning pool, two precipitation cavities, a raw material collection cavity, an opening and closing mechanism, an arc-shaped filter plate, a mud scraping mechanism and a plugging mechanism. A raw material collecting cavity and two sedimentation cavities are further formed in the bottom of the cleaning pool, muddy water and raw materials are discharged into the corresponding sedimentation cavities and the raw material collecting cavity through cooperation of an opening and closing mechanism, an arc-shaped filter plate and a plugging mechanism, and the problem that the cleaned raw materials are inconvenient to take out through a traditional ore washing device is solved; meanwhile, the ore washing device can directly conduct sedimentation treatment on discharged muddy water through the sedimentation tank, the cost of muddy water sedimentation treatment is reduced, the complexity of muddy water treatment operation is reduced, raw materials and mud in a sedimentation cavity are conveyed and discharged at the same time through cooperation of a conveying shaft, an integrated transmission set and a mud scraping mechanism, and the utilization rate of the raw materials is improved. Therefore, the cooperative work efficiency of discharging and conveying the slime and the raw materials after the raw materials are cleaned is improved.

The invention discloses a method for judging barite deposition center by using siliceous rock thickness, and relates to the technical field of mineral resource exploration, and the method comprises the steps: collecting seismic wave reflection data and geological data, and carrying out the preprocessing; predicting the thickness of the siliceous rock stratum based on the processed seismic wave reflection data; the thickness of the siliceous rock stratum and the preprocessed geological data are input into a three-dimensional geological model, and a siliceous rock thickness space distribution diagram is generated; analyzing the spatial distribution diagram of the siliceous rock thickness to obtain a siliceous rock thickness change area; identifying a barite deposition center candidate area based on the siliceous rock thickness change area; and analyzing the barite deposition center candidate area by using a spatial analysis technology to obtain the spatial position of the barite deposition center. According to the method, the candidate area is subjected to multi-parameter optimization by utilizing a space analysis technology, and the barite deposition center position is accurately determined.

The invention relates to the technical field of oil field drilling fluids, in particular to a clay-phase-free calcium chloride water-based drilling fluid as well as a preparation method and application thereof. The clay-phase-free calcium chloride water-based drilling fluid is prepared from the following raw materials: water, calcium chloride, a pH regulator, a tackifying coating agent, a filtrate reducer, a plugging agent, an auxiliary inhibitor, an antioxidant, a lubricating corrosion inhibitor, a dispersing agent and barite. The clay-phase-free calcium chloride water-based drilling fluid disclosed by the invention not only has excellent mudstone hydration inhibition, but also avoids the use of a pH regulator which is easy to react with calcium chloride, and through the clay-phase-free formula design, the rheological stability and the filtration loss control performance are remarkably improved, and the requirements of well cleaning and well control are considered; in addition, the drilling fluid also has good lubricating and drag-reducing performance, and meets related requirements of construction of highly-inclined directional wells and horizontal wells in mudstone stratums.

The invention discloses a method for simultaneously determining total barium and sulfur in barite by inductively coupled plasma emission spectrometry. In this method, the sample is decomposed by melting with sodium carbonate and sodium hydroxide. The molten slag is extracted with hot water, nitric acid and a chromium internal standard solution are added, the crucible and the beaker are washed with dilute hydrochloric acid, water is added and shaken well, heated to boiling gently on a hot plate and then taken off and shaken well. After cooling, it is determined on an inductively coupled plasma emission spectrometer. The method of the invention makes use of the characteristic that barium sulfate has a relatively large solubility in reverse aqua regia, enabling barium and sulfur to coexist stably, and then simultaneously determines total barium and sulfur by inductively coupled plasma emission spectrometry, which has the characteristics of high detection efficiency, high precision, simple operation and low cost, and solves the technical problems that when determining total barium and sulfur in barite by traditional methods, sulfur and barium are difficult to coexist in the solution, usually two different methods are required to complete the determination, and even barium and sulfur need to be separated in advance, resulting in a long process and low detection efficiency.

The invention relates to the technical field of mineral resource mining and mineral separation, and discloses a barite ore open-pit mining harmless mineral separation novel process which comprises the following steps: S1, adopting an open-pit mining mode, stripping surface coverings, and collecting barite raw ore; s2, raw ore primary washing and separation, specifically, the collected raw ore is washed with water, barite rough ore and primary tailings are separated out, and the primary tailings comprise ore washing muddy water and slag; s3, the ore washing muddy water generated in S2 is separated into coarse particle materials and fine muddy water in a physical separation mode, the coarse particle materials and the fine muddy water are 50 meshes or above, according to the novel barite ore open-pit mining harmless beneficiation technology, through all-component separation and resource utilization of tailings, a traditional tailing treatment mode is thoroughly changed, the ore washing muddy water generated by primary washing of raw ore is recycled, and the ore washing muddy water generated by secondary washing of the raw ore is recycled. Through physical separation, reselection and solid-liquid separation processes, fine sand products, soil backfill materials and process reuse water can be obtained through conversion, and no slurry waste residues exist.

The invention provides a drilling fluid and a preparation method thereof. The drilling fluid comprises the following raw materials: water, bentonite, sodium hydroxide, a filtrate reducer, an inhibitor, potassium chloride, a tackifier, a lubricant, a plugging agent, a film-forming agent and barite. Wherein the film-forming agent is prepared from the following raw materials in parts by weight: 50 to 60 parts of organic silicon solvent, 80 to 100 parts of ethanol water solution, 10 to 15 parts of polyurethane particles and 10 to 15 parts of nano silicon dioxide. The drilling fluid provided by the invention can prevent the drilling fluid or filtrate thereof from entering fine and micro-nano cracks of a shale well section, so that the influence of hydration or capillary force on a shale stratum is reduced, and the well wall stability problem in shale drilling can be fundamentally solved.

Drilling fluid compositions may include a weighting agent, a nitrite-containing compound, and an ammonium-containing compound, where the nitrite-containing compound and the ammonium-containing compound may be encapsulated together in copolymer micro-particles forming encapsulated thermochemical compounds, and where at least one property selected from the group consisting of the density, the plastic viscosity, the yield point, the gel strength, and the pH, of the drilling fluid composition may be substantially similar to the at least one property of a comparable drilling fluid composition devoid of the encapsulated thermochemical compounds. Methods for reducing a filter cake from a wellbore surface in a subterranean formation are also provided. The methods may include introducing into the wellbore the drilling fluid compositions, allowing the drilling fluid composition to reach a temperature in the wellbore sufficient for the encapsulated thermochemical compounds to react, where the reaction of the encapsulated thermochemical compounds generates heat and nitrogen gas.

The utility model belongs to the technical field of barite processing, and particularly relates to a repeatable barite pulverizer device which comprises symmetrically arranged supporting frames, the tops of the symmetrically arranged supporting frames are fixedly connected with a first mounting seat, and the top of the first mounting seat is fixedly connected with a polishing base. A second mounting seat is obliquely arranged above the first mounting seat, a polishing plate is embedded in the bottom of the second mounting seat, and a plurality of first polishing teeth are fixedly connected to the bottom of the polishing plate; in the polishing process, the barite is in contact with the polishing surface for polishing in the process of polishing the barite from large volume to small volume, so that the barite can be repeatedly polished in different volume states, and meanwhile, when the barite is simultaneously polished in batches, the polishing efficiency is greatly improved. And the adverse effect on the barite in the polishing process caused by the fact that small-size barite cannot be in good contact with the polishing surface for polishing due to the volume difference of the barite is reduced.

The application relates to the technical field of barite ore processing, and discloses a barite ore grinding and processing device and method, which comprises a screening cylinder and a grinding mechanism above the screening cylinder, a fixing frame is arranged between the screening cylinder and the grinding mechanism, a screening disc is rotationally connected to the inner wall of the screening cylinder, a screening rotating mechanism is arranged at the bottom of the screening cylinder, the screening rotating mechanism can make the screening disc rotate at high speed, slanted discharging cylinders are arranged on the two sides of the upper portion of the screening disc, one end of each of the discharging cylinders is fixedly connected with the inner wall of the screening cylinder, and the other end of each of the discharging cylinders is fixedly connected with a slanted grinding cylinder. The barite ore can be ground into powder, the powder can keep dynamic movement in the screening process, powder gathering can be effectively prevented, the screening efficiency is obviously improved, unqualified powder screened out can be automatically returned for secondary grinding, a closed loop is formed, and the overall working efficiency is greatly improved.

The invention discloses a high-temperature-resistant reversible emulsion drilling fluid and a preparation method thereof.The high-temperature-resistant reversible emulsion drilling fluid is prepared from, by weight, 30-60 parts of a water phase, 50-70 parts of an oil phase, 3-8 parts of a reversible emulsifier, 0-6 parts of organic soil, 0-5 parts of a wetting agent, 0-5 parts of a filtrate reducer, 0-3 parts of calcium oxide and 0-1800 parts of barite, the general formula of the reversible emulsifier is R-CONH (CH2) aNHb (CH2) c (CH3) d, wherein R is long-chain fatty acid with a plurality of methyl branched chains, and a-d are the number of groups. The reversible emulsifier can be utilized to make up the disadvantages of the traditional oil-based drilling fluid in a mud cake removal stage, and compared with the existing drilling fluid, the oil-based drilling fluid has the advantages of higher temperature resistance and lower filter loss, and can adapt to a wider temperature range.

This invention discloses a fissure grouting material, its preparation method, and its application, belonging to the technical field of radiation protection engineering materials. By mass, its raw materials include: 45-60 parts barite sand, 25-35 parts sulfoaluminate cement, 8-20 parts borax, 2-5 parts boron carbide powder, 1-5 parts nano-gadolinium oxide, 5-15 parts lithium slag powder, 3-8 parts barium sulfate whiskers, 3-8 parts polymer emulsion, 0.5-1.5 parts water-reducing agent, 0.1-0.5 parts stabilizer, and 18-25 parts water. This invention provides high-density gamma-ray shielding through barite sand, achieves all-round neutron protection through a quaternary composite neutron absorption system, enhances the material's toughness and shielding effect through barium sulfate whiskers, and ensures high fluidity and interfacial bonding strength of the grout through the polymer emulsion. This material is particularly suitable for sealing and shielding fissures in the surrounding rock of radioactive tunnels, possessing advantages such as excellent shielding effectiveness, good construction performance, high volume stability, and long-term durability.

The invention relates to the technical field of barite powder production and processing, in particular to a barite powder production workshop dust falling device which comprises a dust falling tank, an air inlet cavity, an exhaust cavity and a liquid storage cavity are formed in the dust falling tank, and an air inlet pipe communicated with the air inlet cavity and an exhaust pipe communicated with the exhaust cavity are fixedly mounted at the outer end of the dust falling tank; the air inlet cavity and the exhaust cavity are formed in the upper side of the liquid storage cavity, the air inlet cavity is formed in the periphery of the exhaust cavity, a rotating plate is rotationally installed at the lower end of the air inlet cavity, a scraping plate is fixedly installed at the lower end of the movable disc, the upper end of the scraping plate is attached to the lower end of the first filter screen, and a movable frame is arranged on the upper side of the movable disc. A cleaning brush is fixedly mounted at the lower end of the movable frame, and the lower end of the cleaning brush is attached to the upper end of the first filter screen. According to the workshop dust falling device for barite powder production, the dust falling effect can be achieved through the contact effect of water and dust in air.

The application relates to a separating device for barite powder purification, which comprises a reaction device and fixing feet, the lower end of the reaction device is uniformly fixedly installed with the fixing feet, the power of the motor is turned on, under the rotation of the motor, the stirring mechanism and the material uniformizing mechanism are synchronously rotated, the concentrated sulfuric acid is stirred through the rotation of the stirring mechanism, the barite powder can be intermittently dropped from the storage part through the rotation of the material uniformizing mechanism, is uniformly dispersed through the material uniformizing mechanism, and finally the barite powder is uniformly scattered to the surface of the concentrated sulfuric acid liquid; the concentrated sulfuric acid and the barite powder are fully mixed through the continuous stirring of the stirring mechanism; the impurities in the barite powder can fully react with the concentrated sulfuric acid through the material dropping and stirring, the phenomenon that the barite powder is lumped when being added at one time is avoided, the mixing of the barite powder and the concentrated sulfuric acid is more uniform through the cooperation of the stirring mechanism and the material uniformizing mechanism, and the reaction is more sufficient.

The invention discloses a beneficiation method for recovering barite from tailings, and belongs to the technical field of mineral processing. According to the method, through the technological process of magnetic separation and gravity concentration pre-enrichment, flotation concentration and roasting acid leaching quality improvement, heavy magnetic suspension physical beneficiation, high-temperature roasting and chemical leaching are organically combined, meanwhile, a shaking table technology is optimized, ore grinding is conducted through a stirring mill twice, and BaSO4 grade gt is prepared from low-grade tailings; and 98% of barite concentrate. The technological process provided by the invention is reasonable in structure, high in separation efficiency, small in environmental pollution and easy to realize industrial production.