24 results about "Pegmatite" patented technology

This invention discloses a method for exploring rare metal deposits in pegmatites in high-altitude and cold regions, comprising: acquiring data on high-altitude and cold regions; using the acquired data to explore the ore-bearing strata, ore-controlling structures, distribution patterns of pegmatite veins, and the distribution range of ore-bearing and ore-free pegmatites within the mining area; based on the exploration results, comprehensively delineating surface ore-bearing geological bodies using remote sensing geological interpretation, geological mapping, and geochemical methods, and determining the spatial distribution morphology of ore-bearing geological bodies at depth using geophysical measurement methods; conducting deep verification using drilling methods; establishing a prospecting model based on the acquired data and exploration results; and combining the prospecting model to extract indicator information of favorable mineralization areas in the region and delineating prospecting target areas. This invention, by combining remote sensing geological interpretation, geological mapping, geochemical methods, and geophysical measurement methods, can accurately obtain the location information of rare metal deposits in pegmatites.

The invention discloses an intelligent recognition green separation method and system for pegmatite type lithium ores, and relates to the technical field of mineral recognition and separation. Training an intelligent identification and sorting decision model; ore pretreatment and intelligent roughing waste throwing; stage ore grinding and intelligent real-time separation; by means of the method, the high recovery rate of lithium minerals and high-grade concentrate output can be achieved.

The invention relates to the technical field of mineral processing, and provides a synergistic enrichment method for associated niobium, tantalum, tin and rare earth in pegmatite type spodumene ore, which comprises the following steps: crushing pegmatite type spodumene raw ore associated with niobium, tantalum, tin and rare earth to obtain crushed minerals; the crushed minerals are ground, and ground ore pulp is obtained; pulp mixing is conducted on the ore grinding pulp, and to-be-separated ore pulp is obtained; the to-be-separated ore pulp is subjected to gravity separation, and gravity concentrate and final tailings are obtained; the gravity concentrate is subjected to strong magnetic separation, and niobium tantalum-tin-rare earth concentrate and magnetic separation tailings are obtained; the niobium-tantalum-tin-rare earth concentrate is subjected to electric separation, and iron-tin-containing concentrate and electric separation tailings are obtained; and the electric separation tailings are subjected to flotation separation, and rare earth concentrate and niobium-tantalum concentrate are obtained. According to the collaborative enrichment method, efficient recovery of niobium and tantalum can be achieved, efficient enrichment of tin and rare earth can be achieved, and therefore the utilization rate of niobium, tantalum, tin and rare earth in ore can be greatly increased.

The application discloses a sulfuric acid-free and hydrofluoric acid-free reverse flotation method for preparing high-purity quartz sand from pegmatite, and belongs to the technical field of mineral flotation. The application removes iron impurities from the crushed and ground pegmatite by magnetic separation to obtain non-magnetic mixed ore; then, a combined collector 1 composed of anion and cation collectors is added into the non-magnetic mixed ore, mica flotation is carried out without adjusting the pH of the ore slurry, and mica foam products and mixed mineral slurry containing feldspar and quartz are obtained; then, mixed depressants and a combined collector 2 are added into the mixed mineral slurry containing feldspar and quartz to carry out quartz reverse flotation, and feldspar foam products and quartz products with a purity of more than 2N are obtained; finally, the feldspar foam products can be further subjected to fine selection to obtain final feldspar products. The process flow is simple, the conditions are mild, and the process is sulfuric acid-free and hydrofluoric acid-free, so that the corrosion degree of the equipment is low, the environmental pollution is small, and the process is suitable for industrial application.

The application discloses a method for extracting lithium, cesium and rubidium from pegmatite lithium concentrate, comprising the following steps: step 1, uniformly mixing mixed roasting additives with pegmatite lithium concentrate to obtain a mixture; step 2, performing alkali roasting on the mixture to obtain a calcine containing lithium, rubidium and cesium; step 3, finely grinding the calcine containing lithium, rubidium and cesium, and then adding a leaching agent to leach the calcine to obtain a solution containing lithium, rubidium and cesium; and step 4, extracting lithium, rubidium and cesium from the solution containing lithium, rubidium and cesium. By adding mixed roasting additives to the pegmatite lithium concentrate raw material, low-temperature alkali roasting can be realized. In addition, the method provided by the application can be used for large-scale industrial production, is energy-saving and environment-friendly, low in cost, and has a wide popularization prospect.

The invention provides high-purity quartz prepared by purifying granite pegmatite and a preparation method, and the preparation method comprises the following steps: pretreating granite pegmatite to obtain first quartz particles; performing high-temperature calcination and hydrothermal acid leaching on the first quartz particles to obtain second quartz particles; carrying out secondary scrubbing-flotation, washing and drying on the second quartz particles to obtain third quartz particles; performing chloridizing roasting, acid leaching, filtering, washing and drying on the third quartz particles to obtain the high-purity quartz. According to the method provided by the invention, dark impurity minerals can be deeply removed by combining three sections of strong magnetic separation, high-temperature calcination and hydrothermal acid leaching, tourmaline and quartz particles are fully dissociated or removed through acid dissolution, and the total removal rate of impurities of B, Fe, Al, Mg, Na and Li is greater than or equal to 99.9%. The mass percentage content of SiO2 in the prepared high-purity quartz can reach 99.995% (4N5) or above.

The application relates to a pegmatite type lithium ore prediction method and system based on Li / La element ratio anomaly, and belongs to the technical field of mineral quantitative prediction. The application solves the problem that key ore-forming indexes are uncertain in current pegmatite type lithium ore prediction, leading to inaccurate extraction and prediction of ore-forming information. A hierarchical lithium ore knowledge graph is constructed based on obtained mine area literature data, knowledge reasoning retrieval is performed based on the hierarchical lithium ore knowledge graph, and key features controlling ore formation are determined. The key features are extracted according to the geochemical data of the predicted mine area, and the ratios of the key features are determined. The ratios are subjected to anomaly determination to predict the ore formation of the pegmatite type lithium ore. Through knowledge reasoning retrieval of the hierarchical lithium ore knowledge graph, key ore-forming indexes are found to predict the ore formation of the pegmatite type lithium ore, so as to more accurately extract ore-forming information and predict the mine area.

The invention discloses a dynamic exploration method and system for pegmatite type lithium ore, and relates to the technical field of geological mineral exploration, and the method comprises the following steps: preliminarily determining a prospecting target area and designing a drilling trajectory; drilling is carried out, and in-situ measurement is carried out on the extracted rock core or the drilled well wall by using an underground LIBS in-situ measurement unit while drilling; the underground LIBS in-situ measurement unit is used for converting spectral data acquired by in-situ measurement into element content; the element content is input into a surrounding rock temperature field simulation unit, a surrounding rock paleotemperature field is inverted, and a lithium enrichment favorable section of the current drill hole is recognized and output; and the dynamic exploration decision-making unit integrates the in-situ measurement result of the underground LIBS in-situ measurement unit and the temperature field simulation result, evaluates the current drilling effect and makes a decision. According to the invention, accurate prediction and efficient exploration of lithium ore resources are realized through multi-technology fusion.

The invention provides a method and a device for judging the lithium ore potential in pegmatite, electronic equipment and a storage medium, the method indirectly and quickly judges the lithium ore potential of granite pegmatite by analyzing the microelement geochemical characteristics of key minerals, muscovite and potassium feldspar in pegmatite, namely the ratio of major elements to microelements, so that the lithium ore potential of pegmatite is judged. By means of the method, pegmatite type lithium ore exploration can be partially converted into intelligent diagnosis based on a geochemical model from physical labor depending on a large amount of survey verification, and therefore more accurate, faster and more economical prospecting breakthrough is promoted to be achieved in the mineral exploration industry.

The invention provides a method for determining a saturated crystallization process of spodumene in pegmatite, and belongs to the crossing field of rare metal ore deposit science and mineral in-situ analysis. According to the method, after a sample is collected and prepared into a probe piece, a saturated crystallization potential microcell is locked through muscovite oriented lithofacies-composition characterization; dividing a spodumene core-mantle-edge structure by means of the color cold cathode luminescence image girdle characteristics, and adjusting beam spots according to the girdle width to carry out LA-ICP-MS in-situ analysis; and finally, establishing a muscovite Ta / Nb ratio-spodumene Fe / Mn ratio synchronous response model, and accurately judging the saturated crystallization process. The method breaks through the limitation of single mineral analysis, solves the problems of inaccurate and non-systematic judgment in the prior art, and provides reliable technical support for pegmatite lithium mineralization research.

The invention provides a granite pegmatite particle size morphology control method and a method for separating quartz from granite pegmatite, and relates to the technical field of ore dressing. The particle size range of the granite pegmatite particles obtained through the particle size and morphology regulation and control method is 109-355 microns, and it can be guaranteed that the granite pegmatite particles are in the particle size range suitable for flotation; the fractal dimension is less than or equal to 1.15, so that the granite pegmatite particles are low in fractal dimension and good in uniformity and regularity; the specific surface area is greater than or equal to 0.08 m < 2 > / g, so that the granite pegmatite particles are high in surface roughness and good in medicament adsorption and impurity removal efficiency. When the obtained granite pegmatite particles are subjected to reverse flotation separation, a collecting agent can be selectively and uniformly adsorbed on impurities, so that quartz is kept hydrophilic, meanwhile, the effective collision probability of the quartz in the granite pegmatite particles and flotation bubbles is increased, selective separation of the quartz and feldspar is achieved, and the quality of the quartz is improved. And the obtained quartz is high in grade and recovery rate.

This invention provides a method for preparing high-purity quartz sand from granite pegmatite, belonging to the field of high-purity quartz sand processing technology. The invention includes the following steps: crushing and screening, washing and color sorting, primary calcination and water quenching, sand making and grading, magnetic and gravity separation, flotation, secondary calcination and water quenching, primary acid washing and drying, high-temperature chlorination, secondary acid washing, and sand baking. The method for preparing high-purity quartz sand from granite pegmatite provided by this invention is simple, has low production costs, and can obtain high-purity quartz sand with stable product quality and high purity.

The invention relates to the technical field of mineral resource exploration, in particular to a hard rock type rare earth ore exploration method which comprises the following steps: step 1, performing regional geology and remote sensing preliminary screening, performing full-coverage aerial survey by adopting an unmanned aerial vehicle carrying a hyperspectral imager and an L DAR, interpreting a linear structure and an annular structure in combination with a satellite image, and performing remote sensing and remote sensing preliminary screening; an overlapping area of hyperspectral rare earth mineral abnormity, a fracture structure dense area and a granite / pegmatite exposure area is screened out to serve as a detailed investigation target area; compared with manual mapping, the unmanned aerial vehicle aerial survey coverage efficiency is improved by 10 times, the daily progress of a ground detection platform is improved by 3 times, the whole-process exploration period is shortened to 6-12 months, the hidden ore body prediction error is smaller than or equal to 15% through multi-source data fusion and a machine learning model, the drilling hit rate is improved to 70% or above, the whole process from data collection to target area decision making is automatic, and the method has the advantages of being high in practicability and high in practicability. Manual intervention is reduced, and complex terrain operation risks are reduced.

The invention discloses a geologic body mineral content evaluation method based on mineral spectral data, and relates to the technical field of mineral products. The method comprises the following steps: acquiring a peripheral constraint region of a first target region, acquiring spectral data of a plurality of mineral samples in the peripheral constraint region, and performing mineral matching degree analysis on the spectral data of the mineral samples in the peripheral constraint region and spectral data of at least one target mineral in a reference spectral database, and determining the mineral content of the first target area. The geologic body mineral-bearing property evaluation method based on mineral spectrum data is used for efficiently evaluating the mineral-bearing property of pegmatite vein in an aeolian sand coverage area.

The invention relates to a pegmatite type lithium ore deep exploration method and device based on lithium isotope fractionation, and the method comprises the steps: determining pulse segment attributes according to the thickness of a pulse body, and formulating a sampling rule; different sampling strategies are adopted for different pulse section attributes, for example, sampling methods of thin pulses and thick pulses are different, and areas with strong mineralization states need to be sampled more densely, so that the representativeness of samples and the accuracy of analysis are ensured, and data deviation caused by improper sampling is avoided; through cooperative in-situ analysis and powder sample analysis, the interference of mineral crystallization differentiation on fluid direction judgment is eliminated, and the accuracy of fluid migration direction judgment is improved compared with that of single powder analysis; in-situ multi-test-point data and powder data are mutually verified, the fractionation coefficient can serve as a data validity criterion, misjudgment caused by single test errors is reduced, and finally based on the accurate migration direction, the accuracy of drilling deployment is ensured, invalid drilling is reduced, and the deep exploration efficiency of pegmatite type lithium ore is improved.

This invention discloses a geophysical and geochemical prospecting method for pegmatite-type lithium-beryllium deposits, belonging to the field of geophysical and geochemical prospecting. The method includes: analyzing the spatial relationship between various locations and ore-forming geological bodies based on geological baseline data to obtain geological favorability; analyzing elemental combinations and anomaly gradients based on geochemical data to obtain geochemical anomaly intensity; analyzing physical property differences related to mineralization based on geophysical data to obtain comprehensive geophysical anomalies; linearly weighting the geological favorability, geochemical anomaly intensity, and comprehensive geophysical anomalies to obtain a mineralization index model; calculating the mineralization favorability at each location point-by-point based on the mineralization index model to obtain a mineralization favorability raster map; and selecting areas meeting the conditions as prospecting target areas based on the mineralization favorability raster map. This invention solves the problem that traditional exploration data processing methods are cumbersome and difficult to quickly integrate and analyze multi-scale and multi-type data, thus limiting the accuracy and efficiency of prospecting prediction.

The application discloses a kind of deep cutting area pegmatite vein remote sensing segmentation methods and systems of fusing three-dimensional terrain, and relates to geological remote sensing technical field.For the problem that prior art does not fully consider three-dimensional information of deep cutting complex terrain, resulting in low pegmatite vein remote sensing segmentation precision and poor spatial continuity, the application obtains multispectral remote sensing image and laser radar digital elevation model data of the study area, expands the two-dimensional space-spectral characteristics of the pixel into three-dimensional characteristics through a three-dimensional terrain fusion module, builds a space-spectral Mamba model that fuses three-dimensional terrain, and uses a loss function containing an elevation constraint term to complete model training, achieving accurate remote sensing segmentation of pegmatite veins.The application significantly improves the vein segmentation accuracy and spatial continuity under complex terrain, and is suitable for exploration of complex mountainous granite pegmatite type lithium mine.

The invention relates to a pegmatite type high-purity quartz raw material quartz purity rapid quantitative evaluation method and system, it is assumed that a sample contains N (non-zero positive integer) types of quartz, and the volume ratio and purity of each type of quartz are respectively Ci and Pi. Different types of quartz can be identified through microscopic lithofacies observation in combination with CL images, Ci is obtained through quantitative statistics of the quartz by means of ImageJ software, and meanwhile the impurity element content Pi of the different types of quartz is obtained through in-situ component analysis. The purification experiment result of the actual sample is highly consistent with the theoretical calculation result of the method, and the effectiveness of the method is verified. According to the novel rapid quantitative evaluation method based on metallology, cathodoluminescence and in-situ component analysis, the purity of quartz in pegmatite can be rapidly and quantitatively evaluated at low cost.

The utility model relates to drilling equipment for pegmatite type lithium ores, which comprises a first drill rod, a second drill rod, a third drill rod and a fourth drill rod, the end, corresponding to the first drill rod, of the second drill rod is provided with a mounting hole matched with the extending part, a mounting space is further formed in the second drill rod, the mounting space is adjacent to the mounting hole, and the mounting space penetrates through the side face of the second drill rod; the locking mechanism is arranged in the mounting space and used for locking the extending part mounted in the mounting hole and the second drill rod together; the sealing mechanism is arranged in the installation space, located on the surface of the second drill rod and used for sealing the installation space. The end part of the first drill rod is designed into the extension part with the polygonal section, and the second drill rod is provided with the mounting hole matched with the extension part, so that the design gets rid of a complex operation mode of threaded connection, and an operator does not need to spend a lot of energy on alignment and tightening actions.

The invention relates to the technical field of intelligent detection and sensors, in particular to a pegmatite lithium ore intelligent prospecting multi-source data fusion analysis method and system. The method comprises the following steps: on the basis of a mineralization mechanism of pegmatite lithium ore, dividing a continuous mineralization process into a plurality of stages with definite geological significance, abstracting the stages into structured mineralization rhythm units, and constructing a mineralization rhythm constraint model for representing an evolution sequence and a spatial dependency relationship between the units; performing standardization processing on the multi-source prospecting data, and performing coupling mapping and sensitivity weighting on the multi-source prospecting data according to a rhythm unit to form a comprehensive rhythm response matrix; a comprehensive rhythm consistency index is generated through fusion by calculating spatial consistency and multi-source attribute consistency indexes, so that a high-potential metallogenic area is identified and delineated; and introducing actual exploration verification information to carry out dynamic correction and optimization on a prediction result to form a closed-loop feedback prospecting decision support. According to the invention, mechanism-driven intelligent prediction from multi-source data to the prospecting target area is realized.

The application provides a cassiterite collector and a beneficiation method of a lithium-bearing pegmatite containing associated cassiterite, and relates to the technical field of beneficiation. The cassiterite collector has good selectivity and weak collecting capacity for spodumene, and can pre-elute easily-float gangue minerals such as fluorite, calcite, apatite and hornblende, thereby reducing the difficulty of subsequent spodumene flotation and improving the quality of spodumene concentrate. The beneficiation method using the cassiterite collector enriches cassiterite before spodumene flotation, and simultaneously elutes easily-float gangue minerals such as fluorite, calcite, apatite and hornblende which affect the grade of spodumene concentrate. The cassiterite is purified by gravity separation to obtain cassiterite concentrate, and the recovery of cassiterite in pegmatite ore is realized. The impurities affecting the quality of spodumene concentrate are pre-eluted, the quality and recovery rate of spodumene concentrate are improved, and the economic benefit is greatly improved.

This invention discloses a method for separating and preparing high-purity quartz sand, feldspar, and mica from granite pegmatite. The method includes the following steps: S1 crushing and grinding; S2 wet mica removal; S3 grinding and classification for secondary mica removal; S4 magnetic separation for iron removal; S5 neutral, fluorine-free, and acid-free flotation; and S6 high-temperature acid leaching for deep purification. This invention features a simple process flow, achieving not only fluorine-free and acid-free neutral flotation but also using nanoparticle starch as a quartz inhibitor to efficiently achieve deep separation of quartz and feldspar. This solves the resource waste caused by tailings accumulation in granite pegmatite and achieves efficient separation of quartz sand, feldspar, and mica through an environmentally friendly and simple method, contributing to increased social benefits.

The invention discloses a method for judging the mineralization potential of pegmatite and the extension direction of an ore body by using zirconium isotope, and belongs to the field of mineral exploration and evaluation. The method comprises the following steps: 1) delineating a pegmatite metallogenic section; 2) collecting a pegmatite sample; (3) zircon crystallized in pegmatite is selected from the collected pegmatite samples, and the isotope content in the zircon is detected; and 4) distinguishing the metallogenic potential of the pegmatite: (1) if the Zr isotope content in zircon is lt; the method has no mineralization potential; (2) if the Zr isotope content in the zircon is 0.7 per mill to 1.2 per mill, the zircon has the potential of mineralizing beryllium, niobium and tantalum; (3) if the Zr isotope content in zircon is gt; and the method has the potential of forming lithium-niobium-tantalum-tin mineralization. The method is simple, reliable, short in testing period, low in cost and free of damage to the environment, the extending direction of the ore body can be judged, direct evidence is provided for drilling positioning, exploration risks are reduced to a great extent, and the method has important application and popularization value.

The invention relates to the technical field of mineral exploration, in particular to an economical layered combined sampling and verification method for drill holes in high-purity quartz raw material ore deposit exploration and application of the economical layered combined sampling and verification method. According to the method, the verification cost of most samples is shared to one combined sample through the logic that combination is qualified and all samples are exempted from inspection and the decision-making tree that combination is unqualified and decomposition is performed step by step, and meanwhile, any area with unqualified purity can be finally identified, so that an efficient decision-making process is formed, the combined sample is processed preferentially, and the efficiency is improved. A large qualified area is rapidly delineated, limited time and expenditure are concentrated on a complex section with a problem for fine verification, and resource configuration is optimized. The method is not only suitable for alaite type high-purity quartz ore, but also suitable for exploration of granite pegmatite type, vein quartz type, quartzite type and other types of high-purity quartz raw material ore deposits.