71 results about "Cassiterite" patented technology

The application discloses a multi-metallic sand tin ore beneficiation process, adopts the equal floatation-mixed floatation-gravity separation backwater process, lead concentrate yield is 0.39%, lead grade is 16.62%, recovery rate is 15.93%; zinc concentrate yield is 1.08%, zinc grade is 39.32%, zinc recovery rate is 46.92%, the gravity separation indexes are as follows: tin concentrate yield is 0.39%, tin content is 40.57%, tin recovery rate is 51.66%; low-grade tin concentrate yield is 0.51%, tin content is 3.17%, tin recovery rate is 5.28%. The beneficiation process recovers lead, zinc and tin in the sand tin ore, has high beneficiation indexes and good beneficiation effect.

The invention discloses a beneficiation method for recovering micro-fine particle cassiterite and fluorite from cassiterite tailings, and belongs to the technical field of beneficiation. The method comprises the steps that cassiterite tailings are subjected to reselection, obtained reselected bulk concentrate is subjected to ore grinding and then sequentially subjected to magnetic separation iron removal and flotation desulfurization, and the desulfurized tailings are subjected to cassiterite flotation with metal ion modified water glass with the valence higher than bivalent as an inhibitor and a metal-based multi-ligand organic complex as a collecting agent, so that cassiterite concentrate and flotation tailings are obtained; and the flotation tailings and the gravity separation tailings are combined, water glass or acidified water glass serves as an inhibitor, aliphatic carboxylic acid and heavy alkyl benzene sulfonate serve as a composite collecting agent, fluorite flotation is conducted, and fluorite concentrate is obtained. According to the method, the technological process is simple, the ore grinding and agent cost can be remarkably reduced, and selective separation of cassiterite and fluorite is achieved while efficient recycling of micro-fine particle cassiterite is achieved.

The application discloses a high-efficiency grinding process for tin ore, which effectively separates coarse particles and makes them enter into sand by precisely controlling the pressure of a cyclone in a pressure range of 0.02-0.04 MPa, can effectively ensure that the content of +0.35 mm particles in overflow of the first-stage cyclone is strictly less than 5%, realizes the target of no coarse particles in the overflow, controls the ore concentration to be 30-40% at the same time, ensures the stable flow state of the ore slurry in the cyclone, makes the cyclone more accurately perform the grading operation, reduces the concentration of the sand in the first-stage cyclone, and ensures that the ore entering into the ball mill is basically +1 mm particle size ore through efficient screening, thereby reducing the over-grinding phenomenon of the ball mill, makes the material with a particle size of -0.074 mm particle grade stable between 50-55%, and the proportion of the material with a particle size of -0.01 mm particle grade is about 18%, thereby improving the tin recovery rate, and improving the economic benefit and resource utilization rate of the tin ore beneficiation.

This invention discloses an efficient separation and beneficiation method for scheelite, wolframite, and cassiterite in a tungsten-tin mixed concentrate, comprising the following steps: (1) pre-treatment by grinding, flotation desulfurization, and weak magnetic separation to remove iron from the tungsten-tin mixed concentrate to obtain weak magnetic tailings; (2) concentration and drying of the weak magnetic tailings obtained in step (1) followed by electrostatic separation to obtain electrostatic concentrate and electrostatic tailings; (3) stirring and slurry conditioning of the electrostatic concentrate obtained in step (2) followed by strong magnetic separation to obtain strong magnetic concentrate and strong magnetic tailings; stirring and slurry conditioning of the electrostatic tailings obtained in step (2) followed by scheelite upgrading flotation to obtain scheelite concentrate and scheelite flotation tailings. Based on the differences in conductivity, magnetism, and flotation properties of scheelite, wolframite, and cassiterite, this invention employs a “cassiterite / wolframite electrostatic separation-wolframite / cassiterite strong magnetic separation-scheelite upgrading flotation” process to achieve efficient separation of wolframite, scheelite, and cassiterite.

The invention discloses a method for screening ore-contained rock masses in a tungsten-tin ore prospecting prospective area, and a tungsten-tin ore metallogenic specificity distinguishing system and a screening method are constructed on the basis of fusing rock ore total rock geochemical data, a partial fusion numerical simulation experiment, a Rayleigh shunt numerical simulation experiment and a crystal porridge body model. According to the method, through quantitative analysis of essential differences of the ore-containing rock mass, the lean ore rock mass and the non-ore-containing rock mass in the magma differentiation degree, rapid and accurate screening of the hidden mineralized rock mass in the prospecting distant view area is achieved, and the ore-containing rock mass with the most mineralization potential can be rapidly screened out from the non-ore-containing rock mass or the lean ore rock mass.

The invention relates to the technical field of mineral recycling, in particular to a beneficiation method for recycling fine cassiterite from tin-containing tailings. According to the beneficiation method for recycling the micro-fine cassiterite, through screening, spiral chute, table shaking and centrifugation combination and process optimization, efficient pre-enrichment of the micro-fine cassiterite can be achieved, and by throwing and removing slime in advance, the adverse effect of the slime on the subsequent beneficiation process is avoided from the source.

The invention discloses a beneficiation method for efficiently separating scheelite, wolframite and cassiterite in tungsten-tin bulk concentrate. The beneficiation method comprises the following steps that (1) the tungsten-tin bulk concentrate is firstly subjected to ore grinding, flotation desulfurization and magnetic separation iron removal, and iron-removed tailings are obtained; (2) performing scheelite normal-temperature flotation on the iron-removed tailings to obtain scheelite rough concentrate and scheelite flotation tailings; (3) the scheelite rough concentrate is subjected to flotation upgrading, scheelite upgraded rough concentrate is obtained, and wolframite and cassiterite are deeply inhibited in the flotation upgrading process; the scheelite quality-improved rough concentrate is subjected to quality-improved fine selection, and scheelite concentrate is obtained; (4) the scheelite flotation tailings are subjected to magnetic separation to achieve separation of wolframite and cassiterite, and wolframite concentrate and tin rough concentrate are obtained; and (5) gangue minerals are removed from the tin rough concentrate through electric separation, and tin concentrate is obtained. According to the beneficiation method, tungsten and tin resources can be efficiently and comprehensively recycled.

The invention discloses a skarn tin ore exploration method and system, and is applied to the technical field of tin ore exploration. Comprising the following steps: collecting geologic feature data and tin ore distribution data of a mined skarn type tin ore area, and constructing a tin ore exploration database; training a metallogenic prediction model; dividing a to-be-explored mining area into a plurality of sub-areas, collecting geologic feature data of each sub-area, and inputting the geologic feature data into the metallogenic prediction model for prediction; a key exploration sub-region is judged according to the prediction result, and the tin ore distribution condition is explored in the key exploration sub-region in a physical exploration mode; and establishing a three-dimensional physical model based on the geological feature data of the to-be-explored mining area, and synchronizing the tin ore distribution condition to the three-dimensional physical model of the to-be-explored mining area. According to the method, the key exploration sub-region is predicted through the metallogenic prediction model, the accuracy of the prediction result can be improved, the exploration cost is reduced, and a reference is provided for skarn type tin ore exploration.

A polymetallic low-grade tin ore beneficiation process, comprising the following steps: 1) grinding; 2) classification; 3) magnetic separation: a first middling, a second rough concentrate, and a second middling are combined for wet magnetic separation to obtain magnetic tailings and a magnetic concentrate, a flotation agent is added to the magnetic tailings for conditioning, then flotation is performed to obtain a flotation concentrate and flotation tailings, and the flotation tailings are thickened, ground, and returned to a first-stage shaking table for re-beneficiation; 4) bulk flotation of sulfide minerals; and 5) re-beneficiation of a tin concentrate using a shaking table.

The invention relates to a cassiterite flotation collecting agent and application thereof, and belongs to the technical field of mineral flotation. The collecting agent is di (2-ethylhexyl) phosphate, the molecular structure of the collecting agent has a plurality of hydrophobic branched chains and phosphate groups, the adsorption strength of the collecting agent on the cassiterite surface can be remarkably enhanced, and the hydrophobic performance of the mineral surface is effectively improved. And high-selectivity separation of cassiterite and common gangue minerals can be realized in an alkalescent to neutral ore pulp environment. The collecting agent is environmentally friendly, low in toxicity, good in dispersity and chemical stability, easy to disperse under the ore pulp stirring condition, convenient to use, high in collecting efficiency, excellent in selectivity and beneficial to obtaining high-grade cassiterite concentrate with the high recovery rate.

The invention relates to a combined separation and recovery process for low-grade associated tantalum-niobium-tin ores. The combined separation and recovery process comprises the following steps: feeding raw ores into a linear sieve for sieving; oversize products are fed into a first-section ball mill, and ore is discharged into a spiral classifier for classification; graded returned sand is returned to the second-stage ball mill for regrinding, graded overflow is fed into a weak magnetic roller, iron-removed non-magnetic ore pulp is fed into a high-frequency coarse screen, oversize products are fed into the second-stage ball mill for fine grinding, undersize products are fed into a hydrocyclone, and underflow of the hydrocyclone is fed into a first-stage distribution chute; second-section rough concentrate and first-section rough concentrate produced by second-section distribution are combined and fed into a high-frequency fine screen, oversize products are fed into a ball mill to be ground again, and undersize products are fed into a first-section high-gradient magnetic separator; feeding the non-magnetic product into a second-stage high-gradient magnetic separator, and reselecting the non-magnetic product generated by the second-stage high-gradient magnetic separator to obtain a tin concentrate product; and the first-section magnetic separation product and the second-section magnetic separation product are combined for reselection to obtain a tantalum-niobium concentrate product. According to the method, tantalum, niobium and tin in the extremely-low-grade tantalum-niobium-tin ore can be efficiently and comprehensively recycled.

The invention relates to the technical field of metallurgy, and particularly discloses a process for enriching copper and nickel from secondary nickel return charge, the secondary nickel return charge, cassiterite and a slag former are blended and then calcined in a reducing atmosphere, the main component of the cassiterite is SnO2, the cassiterite is reduced into Sn in the reducing atmosphere, the Sn has a lower melting point, the melting point of the Sn is higher than that of the slag former, and the copper and nickel are enriched in the secondary nickel return charge. The tin-nickel-copper low-melting-point alloy has the advantages that the tin-nickel-copper low-melting-point alloy can permeate into alloy crystal grains of the secondary nickel return material, the original compact structure is destroyed, the dissolving and leaching difficulty of nickel and copper in the secondary nickel return material is effectively reduced, and then the dissolving and leaching efficiency is improved; and meanwhile, the cassiterite is doped, so that the smelting temperature is reduced, and compared with the smelting temperature of about 1400-1500 DEG C in the prior art, the smelting can be performed at 1000-1100 DEG C, so that the energy consumption is saved, and the tin in the cassiterite can be effectively recycled.

The present invention discloses a flotation method for fine-grained cassiterite oxide ore, which belongs to the field of mineral processing technology. For fine-grained cassiterite oxide ore with extremely fine particle size and high content of mud minerals and iron oxide minerals, which is difficult to select, the method comprises the following steps: 1) re-grinding the fine-grained cassiterite oxide ore to a content of more than 65% of ‑37μm and a flotation pulp concentration of 30‑35%; 2) reducing the sulfur content to less than 1% through a flotation desulfurization process; 3) adding a desludging collector and using flash flotation to remove some of the fine mud. 4) adding a sludge dispersant. 5) adding a mixed collector and an auxiliary collector to float out the tin minerals to obtain a tin concentrate product. The present invention has the advantages of strong adaptability to materials, stable indicators, low dosage of reagents, and high recovery rate, and is an economical and efficient method for flotation recovery of fine-grained cassiterite oxide ore.

The invention belongs to the technical field of mineral separation, and particularly relates to a method for improving the tin recovery rate through mineral ceramic ball regrinding and recleaning in a shaking table. According to the method, ore in a tin ore table is ground, ore pulp is obtained, and an ore grinding medium used for ore grinding comprises ceramic balls; carrying out desulfurization flotation on the ore pulp to obtain sulfur concentrate and flotation tailings; and the flotation tailings are subjected to shaking table gravity separation operation, and tin concentrate is obtained. According to the method, a porcelain ball grinding and floating weight combined method is adopted for tin ore table middling, argillization of tin ore can be relieved from the source, monomer dissociation of the ore is improved, the influence of iron pollution on desulfurization is reduced, the grade and the recovery rate of tin concentrate are improved, efficient recycling of tin resources is guaranteed, and the method is suitable for industrial production. And the method has important significance for improving the tin ore recovery rate. Meanwhile, the method has the advantages of being low in energy consumption, easy to operate, low in sorting cost and the like, the tin recovery rate can be increased by 3-5%, and economic benefits are obvious.

The application discloses a beneficiation method of low-grade tin ore by using magnetic separation and flotation. The beneficiation method of low-grade tin ore by using magnetic separation and flotation comprises the following steps: step (1), crushing and grinding the low-grade tin ore, using water as a leaching agent, and separating by a wet magnetic separator to obtain magnetic minerals and magnetic tailings; step (2), drying the magnetic tailings after the magnetic separation, and then placing the tailings in a flotation agent to perform a flotation treatment to obtain flotation minerals and flotation tailings; step (3), concentrating the flotation tailings after the flotation treatment to obtain concentrated tailings; and step (4), smelting the concentrated tailings to finally obtain tin metal, sulfide, silicate, oxide and impurities. The application combines the magnetic separation and the flotation to improve the ore separation efficiency and the recovery rate, the water is used as a leaching liquid in the magnetic separation process to reduce the cost, and no new impurities are introduced, and the flotation agent can reduce the surface tension of the tin ore to improve the leaching rate.

The present invention discloses a tin tailings classification and recovery device, which includes a frame, a turntable, a water spraying mechanism, a watering pipe and a shaking table. Also disclosed is a tin tailings classification and recovery process, which includes the following steps: feeding, particle size sorting, collecting tin ore, and screening tin ore. The tin tailings classification and recovery device has the advantage of convenient screening and recovery of tin tailings. The beneficial effects achieved by the present invention are: the equipment layout is reasonable and compact, and the floor space is small. During the sorting and screening process, no conveying device is required to transport the tin tailings. The operator only needs to operate on one device to complete the sorting, suspension vibration separation and shaking table separation of the tin ore, thereby achieving the advantage of convenient screening and recovery of the tin tailings.

The invention discloses a micro-fine particle cassiterite flotation combined inhibitor and a preparation method and application thereof, and belongs to the technical field of mineral processing flotation. The combined inhibitor is composed of sodium phosphinate, sodium alginate and DL-2-aminobutyric acid and can be used for the flotation process of micro-fine particle cassiterite, and excellent flotation indexes are obtained. The combined inhibitor can remarkably inhibit siliceous gangue minerals in micro-fine particle cassiterite flotation, efficient selective separation is achieved, through the synergistic effect of all the components, the combined inhibitor can greatly reduce the total agent dosage, and the combined inhibitor is easy to prepare, environmentally friendly and convenient to industrially store and implement. The method is of great significance in achieving efficient flotation separation and enrichment of micro-fine particle cassiterite and improving the comprehensive utilization rate of tin resources.

The invention provides a method for separating tantalum-niobium smelting slag. The method comprises the following steps of water leaching pretreatment, screening classification, cassiterite reselection and enrichment and high-strength magnetic separation of rare earth. Wherein in the water leaching pretreatment, tantalum-niobium smelting slag and water are mixed according to the liquid-solid ratio of (1-7): 1, stirring is performed at the temperature of 0-30 DEG C, and water leaching slag and filtrate are obtained through separation; and the particle size of the screening and grading is 38-74 microns. Soluble impurities are fully dissolved and separated through low-temperature water leaching, and interference of the soluble impurities on the follow-up sorting effect is avoided; the materials are split according to particle size differences in the screening and grading process, so that the coarse and fine particle materials are matched with optimal gravity separation equipment respectively, and density separation of cassiterite and rare earth ore can be achieved more easily; cassiterite extraction is achieved by means of density difference during reselection and enrichment of cassiterite, rare earth ore is accurately separated through high-strength magnetic separation by means of magnetic difference, and separation of all processes is more sufficient. In addition, the separation method is a physical beneficiation method and is low in cost, simple, environmentally friendly and friendly to the environment.

The present invention discloses a flotation collector, a preparation method, and an application thereof, and relates to the field of mineral processing technology. The flotation collector comprises carbonized methyl carbamate, zinc diethyldithiocarbamate, butyl octanol, and sulfate in a mass ratio of (3-6): (1-12): (2-3): (3-8). During the flotation treatment of cassiterite ore, the composite flotation agent prepared thereby reduces the loss of easily muddied fine and micro-grained cassiterite in tailings after one roughing, three scavenging, and three cleaning steps. The agent accurately adsorbs and reduces the cassiterite content in the cassiterite ore, achieves efficient recovery of fine and micro-grained cassiterite, improves the effective recovery of cassiterite, and significantly improves the tin grade and recovery rate in the tin concentrate.

This invention discloses a method for the flotation recovery of fine-grained cassiterite embedded in coarse sand of tin-containing polymetallic tailings, relating to the field of mineral processing technology. It introduces microwave pretreatment technology into the recovery of fine-grained cassiterite embedded in coarse sand at the tailings dam head, employing a combined process of "microwave pretreatment-grinding-intense magnetic separation for iron removal-fine-grained cassiterite flotation" to improve cassiterite recovery efficiency. This method utilizes the differences in microwave absorption capacity between cassiterite, iron-bearing minerals, and gangue to generate selective thermal stress and microcracks at the mineral interface, achieving efficient and selective dissociation of cassiterite from the intergrowth of iron-bearing minerals and gangue. Intensive magnetic separation then removes iron-bearing minerals, eliminating their interference with flotation. Finally, a ternary combined collector composed of SN01-1-hydroxyoxime acid, SN02-1-hydroxyoxime acid, and a flotation defoaming agent is used for cassiterite flotation. This method achieves efficient recovery of difficult-to-process cassiterite resources from coarse sand in tailings dams, providing an effective technical path for the resource utilization of historically inherited tailings.

The present invention discloses a method for rapidly determining the type of a tin deposit using cassiterite. The method comprises collecting cassiterite markers from the deposit, obtaining cathodoluminescence image characteristics, chronological characteristics from U-Pb dating, trace element characteristics, and Sn isotope characteristics of the markers, and determining the type of the tin deposit based on these characteristics. This method can directly invert the mineral geochemical characteristics of cassiterite to determine the deposit type, eliminating issues such as external interference and ambiguity in elemental analysis, and significantly improving the efficiency of mineral exploration.

The invention discloses a cassiterite flotation collecting agent and application thereof, and belongs to the technical field of mineral flotation. According to the cassiterite flotation collecting agent, (2-ethylhexyl) phosphate mono-2-ethylhexyl ester is used as the cassiterite flotation collecting agent, the (2-ethylhexyl) phosphate mono-2-ethylhexyl ester contains multi-branched chain alkyl, the surface hydrophobicity of cassiterite is improved by enhancing the adsorption capacity to the cassiterite mineral surface, and the cassiterite flotation collecting agent is obtained. And high-efficiency separation of cassiterite and gangue minerals can be realized under the condition that the pH is neutral or alkalescent. The cassiterite flotation collecting agent used in the method is non-toxic, harmless, green and environmentally friendly, has excellent water solubility, is beneficial to dissolution of the agent in ore pulp, and is high in collecting capacity and selectivity, and the cassiterite concentrate recovery rate is high.

The invention discloses a composite chelating collector and a fine-fraction cassiterite flotation method and system, and relates to the technical field of mineral processing and flotation. According to the method, the phosphonic acid-hydroximic acid composite chelating collecting agent is adopted, the agent can specifically reinforce the surface hydrophobicity of cassiterite, the agent and the high-pressure microbubble flotation technology generate a synergistic effect, and therefore efficient, high-selectivity and environment-friendly flotation of fine-particle and micro-fine-particle cassiterite is achieved; the method is suitable for solving the technical problem that the-10 [mu] m cassiterite is difficult to recover through a traditional reselection and flotation process.

The present invention discloses a multi-metal tin ore beneficiation device, comprising a fixed support, a grinding device, a beneficiation device, and a driving device, wherein the grinding device, the beneficiation device, and the driving device are all mounted on the fixed support, the beneficiation device comprising a turntable, an annular bar, a first vortex bar, a second vortex bar, a first collection box, and a second collection box, the grinding device being located in the middle of the turntable, the annular bar surrounding the grinding device, the first vortex bar being located on the side of the annular bar away from the grinding device, and the second vortex bar being located on the side of the first vortex bar away from the grinding device. The beneficial effects achieved by the present invention are as follows: by driving the turntable to rotate by a single driving device, the operation of the grinding device and the beneficiation device can be simultaneously driven, the number of driving devices can be reduced, and the advantages of low construction cost, low energy consumption, and high equipment utilization efficiency can be achieved.

The invention belongs to the technical field of mineral processing, and particularly discloses a method for enhancing cassiterite flotation in the old tailing process of a tailing pond. Aiming at refractory tin-containing old tailings stockpiled in a tailings pond, a technical route of firstly grading and then grinding, cleaning by ultrasonic waves and an oxidizing agent, flotation and impurity removal of sulphide ore and efficient and synergistic collection of cassiterite is adopted. According to the method, an oxide layer and pollutants on the surface of cassiterite in the old tailings can be effectively removed, flotation recovery is conducted on cassiterite which is difficult to recover through a previous mineral separation technology through a process strengthening technology by combining the synergistic and complementary characteristics of alkyl hydroximic acid and organic acid collecting agents, and effective recovery of tin resources in the stockpiled old tailings is achieved.

The invention relates to application of ciclopirox and ethanolamine salt thereof in mineral flotation, in particular to application of ciclopirox and ethanolamine salt thereof as a collecting agent in flotation separation of cassiterite and gangue minerals. The ciclopirox and the ethanolamine salt thereof can be adsorbed on the surface of cassiterite, the surface hydrophobicity of the cassiterite is enhanced, the cassiterite and gangue minerals can be efficiently separated, the recovery rate of cassiterite concentrate is effectively increased, and the compound is small in environmental pollution and environmentally friendly.

The invention relates to the technical field of water pollution control and treatment, in particular to an integrated treatment method and system for historical remaining tin ore tailing pond percolate, and the method comprises the following steps: obtaining tailing heap dissolved oxygen data and generating a direction sequence, extracting matching of decline section analysis and flow velocity, identifying a lagging area and triggering oxygen release, a response sequence is generated by pairing metal valence state and oxygen change, and a treatment scheme is generated by combining pH and concentration trend. According to the method, accurate recognition and centralized intervention of the response section are achieved by constructing the oxygen concentration change trend and positioning the lag region, the effectiveness and pertinence of oxygen delivery are improved, the control precision of valence evolution is enhanced by extracting the metal valence transition behavior and pairing the metal valence transition behavior with the oxygen change time point, and the accuracy of oxygen delivery is improved. And combined trend analysis of pH and heavy metal concentration is combined to form a linkage regulation and control mechanism among pollution indexes, so that the response efficiency of the treatment process is improved, and the rhythm matching degree and the stability of water quality improvement are intervened.

The application provides a tin mineralization identification and sampling method fusing XRF and spectral data, and relates to the technical field of geological exploration and mineral exploration. The method comprises the following steps: tin element content distribution is obtained by adopting portable XRF to perform grid rapid scanning; the characteristic peak of altered mineral is identified by using a portable spectrometer at an abnormal point; XRF data and spectral data are fused; the boundary of a tin mineralization body is rapidly circled on site; and the geological logging and sampling are guided accordingly. The application implements forced sampling on the point which is not mineralized by naked eyes but is determined as mineralized by instruments, and fundamentally solves the technical problem of "logging without seeing and supplementing sampling with ore". The application can significantly reduce the ore leakage rate, improve the accuracy and efficiency of logging and sampling, shorten the exploration period, and can be popularized to the on-site exploration of other difficult-to-identify metal minerals.

The present invention relates to the field of mineral beneficiation and processing technology, and more particularly to a beneficiation method for recovering cassiterite from shaking table tailings. The beneficiation method comprises: screening and grading the shaking table tailings to obtain an oversize coarse product and an undersize fine product; grading the undersize fine product in a cyclone to obtain a cyclone coarse grit and a cyclone fine overflow; subjecting the cyclone coarse grit to tin flotation to obtain a flotation 1 tin concentrate; subjecting the flotation 1 tin concentrate to shaking table gravity separation to obtain a shaking table tin concentrate; subjecting the cyclone fine overflow to reverse flotation to remove floatable matter; subjecting the reverse flotation tailings to tin flotation to obtain a flotation 2 tin concentrate; subjecting the flotation 2 tin concentrate to centrifugal gravity separation to obtain a centrifugal tin concentrate and centrifugal tailings; and combining the shaking table tin concentrate and the centrifugal tin concentrate to form a final tin concentrate. The method can significantly reduce tin flotation costs and improve the grade and recovery rate of tin concentrate.