29 results about "Trace element" patented technology

The present invention aims to provide a copper alloy ingot with further improved uniformity of physical properties. The copper alloy ingot of the present invention has a composition containing at least one additive element, and the balance consisting of Cu and unavoidable impurities, the at least one additive element being a trace element at a concentration of 10 to 50 mass ppm, and the deviation in the concentration of the trace element in the length direction being within ±3.5 mass ppm relative to the average concentration of the trace element.

The present application belongs to the field of time series analysis and dynamic early warning technology, and provides a method and system for early warning of excessive catalysis of trace elements in the preparation of biochar, specifically: first, preset a data acquisition unit in the fixation channel, and record the collection position corresponding to the data acquisition unit as the fixation monitoring site; monitor the surface conductance value and the medium-temperature thermal history value in real time from each fixation monitoring site; then, evaluate the crystallization residence matching according to the surface conductance value and the medium-temperature thermal history value, and obtain the residual risk degree of each fixation monitoring site; finally, perform early warning of excessive catalysis according to the residual risk degree. The evaluation of crystallization residence matching through time series analysis can effectively quantify the residual risk of high-energy state surface free metal centers caused by the mismatch between the crystallization enrichment degree in the fixation step of the biochar preparation process and the residence in the medium-temperature zone in the pyrolysis process, thereby improving the consistency of the carbon sequestration capacity of the biochar product and the product qualification rate of the production process.

1. Product name for appearance design: Packaging bag (trace element water-soluble fertilizer); 2. Product application for the design: packaging; 3. Key design elements of the product's appearance: the product's pattern; 4. The image or photograph that best illustrates the design's key features: the front view; 5. Flat product design, other views omitted.

This utility model relates to the technical field of micronutrient water-soluble fertilizer filling devices, and in particular to a micronutrient water-soluble fertilizer filling device. Its clamping mechanism clamps the micronutrient water-soluble fertilizer tank, a sterilization mechanism sterilizes the inside of the tank, a feeding mechanism breaks up any clumps of micronutrient water-soluble fertilizer, and the broken micronutrient water-soluble fertilizer is discharged into the filling mechanism. The filling mechanism then discharges the micronutrient water-soluble fertilizer into the micronutrient water-soluble fertilizer tank, improving the practicality of the equipment. The device includes a clamping mechanism, a sterilization mechanism, a feeding mechanism, a filling mechanism, a discharge mechanism, and a discharge mechanism. The sterilization mechanism is mounted on the clamping mechanism, the feeding mechanism is mounted on the filling mechanism (located to the left of the clamping mechanism), and the discharge mechanism is located at the rear of the clamping mechanism and mounted on the discharge mechanism.

This application relates to a method for determining trace elements in metallic manganese. This method utilizes inductively coupled plasma mass spectrometry (ICP-MS) to determine trace elements in metallic manganese, achieving high sensitivity and accuracy in the detection of trace elements and improving the accuracy of analytical results. By employing matrix matching to eliminate interference, the method effectively reduces interference from other elements in the determination of trace elements, further enhancing the accuracy of the results. This method is applicable to the determination of trace elements in various types of metallic manganese samples, exhibiting broad applicability. Furthermore, the method's operation steps are simple and clear, easy to master, and readily applicable in practical work.

The application discloses a method for enriching trace elements in carbonate type salt lake brine. The enrichment method comprises the following steps: performing first natural evaporation treatment on the carbonate type salt lake brine to obtain a first liquid phase product and a first solid product; performing first freezing treatment on the first liquid phase product at a first low temperature to obtain a second liquid phase product and a second solid product; performing second freezing treatment on the second liquid phase product at a second low temperature to obtain a third liquid phase product and a third solid product; and performing second natural evaporation treatment on the third liquid phase product to obtain a fourth liquid phase product and a fifth solid product, so that rubidium and cesium are enriched in the fourth liquid phase product. The enrichment method provided by the application improves the yield of rubidium and cesium, establishes a new evaporation process of the salt lake brine with the characteristics of 'considering potassium, rubidium and cesium', and provides high-quality raw materials for the following extraction and separation process of rubidium and cesium.

The present application relates to single crystal alloy casting defect control technical field, especially to a kind of trace element / microelement carbon reduction method for reducing micro-pore in the casting process of nickel-based single crystal superalloy.The present application is aimed at different alloy system, and target carbon content is determined by thermodynamics-solidification simulation, so that carbide starts to precipitate when solid phase mass fraction is 80%~90% during solidification, thereby promoting interdendritic residual melt feeding at the end of solidification when feeding channel is not completely closed, and the purpose of significantly reducing the porosity of single crystal casting is achieved.The present application is not limited to all alloys with fixed content range, but determines the corresponding carbon content according to the solidification characteristics of each alloy system, so it can be applied to single crystal alloys of different systems.

This utility model relates to inorganic synthesis and materials science, specifically to the production of FeS2 pyrite with trace impurities of Au, Ag, Te, and Cu for subsequent use as a reference sample in laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS). The technical result achieved is a pyrite-based material with homogeneously distributed trace impurities of Au, Ag, Te, and Cu. The sample is obtained in the following manner, with all annealing processes carried out in quartz ampoules sealed under vacuum: 1) pyrite synthesis by annealing precursors in the form of elemental substances Fe and S in stoichiometric ratios at 700°C; 2) mechanical homogenization of the matrix with trace elements in chalcogenide form in a planetary ball mill with a drum and balls made of zirconium oxide for 60 minutes with the addition of hexane; 3) pressing and annealing the resulting powder at 600°C for 12 hours. The proposed utility model enables the production of high-quality pyrite-based materials with trace amounts of Au, Ag, Te, and Cu, which can subsequently be used as reference samples in LA-ICP-MS.

The invention relates to a synergistic premix for animal nutrition in the form of a ternary solid of magnesium and a trace element, which premix may consist essentially of a solid solution of a magnesium oxide and an oxide of a trace element selected from iron, copper, zinc and manganese. This premix may be obtained by a process comprising a step of preparing a dry mixture of a raw material of the trace element oxide and a raw material of magnesium oxide, then a step of heating the mixture of raw materials to a temperature ranging from 700° C. to 1500° C.

This invention discloses a method for detecting precious metals based on electromagnetic response feature analysis, belonging to the field of precious metal detection technology, and is used to solve the problem of inaccurate identification of trace elements and low-concentration ions under strong matrix responses of precious metals. The invention first obtains the morphology, main body type, and detection environment parameters of the precious metal object to be tested, calls the corresponding matrix reference response, and collects multi-frequency electromagnetic response data. For precious metal recovery liquids, short-term enrichment of low-concentration metal ions is performed; for solid precious metal samples, layered electromagnetic scanning is performed; then, the precious metal matrix response is stripped, trace perturbation response features are extracted, and matched segment by segment with element response templates to eliminate false anomalies caused by temperature, conductivity, surface oxide layer, and non-target ions, thus determining the detection results of trace doping elements, trace impurity elements, low-concentration precious metal ions, or trace precious metal residues, improving the accuracy and traceability of precious metal trace detection.

The invention relates to the production of nanofertilizer with different formulations suitable for fertilization by drones, in which the needs of trace elements as well as the nitrogen, phosphorus and potassium needs of plants are met.

This invention relates to the field of geochemical exploration technology, specifically to a method for delineating mineral exploration target areas based on geochemical fingerprint characteristics, comprising the following steps: Step 1: Investigation and collection; Step 2: Geochemical fingerprint parameter testing: constructing a multi-dimensional geochemical basic database from the collected samples; Step 3: Feature library construction: screening geochemical fingerprint indicators and thresholds strongly correlated with copper mineralization in the correlation patterns; Step 4: Copper mineralization information extraction: screening out geochemical anomaly areas that simultaneously meet the fingerprint system indicator thresholds, the geochemical anomaly areas being potential areas containing copper mineralization information; Step 5: Delineation of mineral exploration target areas. This invention integrates multi-dimensional parameters such as geochronology, isotopes, major and trace elements, rare earth elements, and element combinations, and by introducing machine learning and spatial analysis techniques, achieves automatic screening of fingerprint indicators and intelligent identification of anomaly areas.

The present application relates to the technical field of nickel-based superalloy, and particularly relates to a trace / microelement regulation method for optimizing the creep and oxidation performance of nickel-based single crystal superalloy. The trace / microelements in the optimized nickel-based single crystal superalloy satisfy the following conditions: Hf 1000-2000ppm; C: 50-150ppm; the total content of C+B is not more than 150ppm; Ce: 0 or 20-100ppm, Y: 0 or 20-100ppm, and 0 C+Y≤3 / 4 of the content of C element; and the total content of C, B, Hf, Ce and Y is 1000-2500ppm. The present application controls the added content of trace / microelements C, B, Hf, Ce and Y in the nickel-based single crystal superalloy, optimizes the micro-area distribution of the elements in the alloy structure, and thus improves the comprehensive service performance of the alloy in high-temperature creep and oxidation.

The application discloses a special compound feed for Ningxia Tan sheep and a preparation method thereof, and relates to the technical field of ruminant feed, which comprises a basic daily ration and a gate-controlled trace element component; the gate-controlled trace element component accounts for 0.7-2.0 percent of the mass of the special compound feed for Ningxia Tan sheep; trace element metal ions are combined with coordination sites on polysaccharide ligands in a three-dimensional cross-linked gate-controlled network formation process, and are distributed in the three-dimensional cross-linked gate-controlled network in a coordination combined state; the three-dimensional cross-linked gate-controlled network maintains a borate ester bond connection state under the condition of pH 6.2-6.8, and the borate ester bond is dissociated under the condition of pH 2.5-4.0. In the application, a boron source cross-linking agent is added to a coordination precursor, and the pH of a system is adjusted to construct a three-dimensional cross-linked gate-controlled network, so that the release of trace elements is controlled under neutral conditions, and the trace elements are quickly released under acidic conditions, and directional matching of release rhythm and an absorption window is realized.

This invention relates to the field of wastewater treatment technology, and discloses a method and system for processing water treatment efficiency data in recirculating aquaculture systems (RAS). The method includes: assessing the influence of trace element parameters in standard water quality data of the RAS area on the RAS area, and converting them into influence weights corresponding to the trace element parameters; adjusting the influence weights based on the synergistic and antagonistic reactions between trace elements in the standard water quality data to obtain optimized influence weights; merging the trace element parameters and optimized influence weights into a comprehensive water treatment efficiency index for the RAS area; determining that the RAS area is in an inefficient operating state when the comprehensive water treatment efficiency index is lower than the lower limit of the historical threshold range; and selecting water quality adjustment strategies corresponding to the inefficient operating state from a preset water quality adjustment strategy library. This invention can improve the efficiency of RAS water treatment efficiency data processing.

The utility model relates to seed germination device field discloses a kind of plasma combines trace element enrichment germination device, including outer frame, multiple positioning slots are opened in the outer frame inner wall, and the inside between two positioning slots of same height is slidably connected with tray, the tray top and the outer frame inner wall are all fixedly connected with temperature and humidity sensor, the tray bottom and the outer frame inner top wall are all fixedly connected with multiple nozzles, the tray top and the outer frame inner top wall are all installed with plasma processing unit, the tray top and the outer frame inner top wall are all installed with trace element enrichment system.In the utility model, by poking poking piece, driving slide plate compression spring one, make that plug rod is collected into inner shell and is separated from outer frame, while baffle automatically falls and blocks the outlet of plug rod, realizes the height of tray in outer frame inside can be quickly unlocked and replaced tray, or increase the number of tray, to avoid causing space waste, reasonable layout the space in outer frame.

The present disclosure relates to the technical field of geology, and particularly relates to a karst fluid migration path determination method, device, equipment, medium and program. The method comprises the following steps: classifying a plurality of reference minerals in a to-be-measured region to obtain a plurality of first minerals and a plurality of second minerals, at least part of the first minerals are located in an initial mixing area, and each second mineral is located in a fluid migration area; detecting the content of a plurality of trace elements in each reference mineral; determining the initial mixing area and the migration direction of the karst fluid in the fluid migration area according to the content of each trace element in each first mineral and the content of each trace element in each second mineral, the karst fluid flows through the minerals at a historical time to form the reference minerals; and determining the migration path of the karst fluid according to the initial mixing area and the migration direction. The migration path of the karst fluid can be determined according to the plurality of reference minerals in the to-be-measured region, the karst distribution rule can be obtained, and thus the development effect of the karst reservoir is improved.

The application discloses a preparation method of low-microelement calcined petroleum coke for prebaked anodes, and belongs to the technical field of petroleum coke calcination production, and comprises the following steps: S1, a production control system obtains comprehensive indexes of microelements of calcined petroleum coke based on default technical standards and a default calcination program; S2, whether the range of the microelements M meets the latest control standards is judged, and when the range does not meet the latest control standards, step S3 is entered; S3, the system queries a pre-marked low-M calcination program, and obtains new comprehensive indexes of microelements of the calcined petroleum coke; S4, whether the range of the new microelements M meets the latest control standards is judged, and when the range does not meet the latest control standards, step S5 is entered; S5, the proportion of petroleum coke raw materials is adjusted, and the microelements are obtained and compared until the range of the microelements M meets the latest control standards; S6, a production program is executed; and S7, the microelements of the calcined petroleum coke are detected. The changed technical standards are accurately controlled by first selecting and calling the calcination program, and the production cost is controllable.

The utility model belongs to trace element extraction technical field especially relates to a soil trace element extraction device, including extraction box and support leg, the extraction box inside is provided with extraction structure, the extraction structure includes and auxiliary mechanism have extraction mechanism, the extraction mechanism includes electric telescopic handle, connecting plate, motor, rotary rod, mounting plate, electric telescopic handle bottom and connecting plate top interconnect, connecting plate top and motor bottom interconnect. This soil trace element extraction device has realized the height of the reagent tube that can be adjusted fast and conveniently, and can carry out location fixation to multiple reagent tubes simultaneously, and can rotate the reagent tube, thereby can better carry out extraction work, solved the problem that multiple reagent tubes cannot be extracted simultaneously fast and conveniently, and the reagent tube cannot be rotated in the extraction process, improved the work efficiency of extraction device.

The application belongs to the technical field of geological exploration and geochemical analysis, and particularly relates to a paleoenvironment discrimination method based on coupling of carbonate rock cathodoluminescence and trace elements. The paleoenvironment discrimination method based on coupling of carbonate rock cathodoluminescence and trace elements is as follows: the content of trace elements in the same mineral micro-area of a carbonate rock sample to be measured is obtained, the carbonate rock sample to be measured is grouped according to a vanadium-chromium ratio V / Cr and a cerium abnormal value Ce / Ce*, and is divided into an oxidation group or a reduction group; the corresponding paleoenvironment discrimination index of each group is calculated according to the grouping result, compared with a preset determination threshold, and the paleoenvironment category to which the carbonate rock sample to be measured belongs is identified; and the application provides a more reliable and efficient quantitative discrimination tool for industrial applications such as sequence stratigraphic division and reservoir facies belt prediction.

This invention relates to the field of liquid phase chemistry, specifically to a method for determining mercury and arsenic in coal briquettes based on hydrothermal synthesis reactor digestion and atomic fluorescence spectrometry. The method involves adding a certain amount of coal briquettes and an appropriate amount of mixed acid to a pre-treated polytetrafluoroethylene (PTFE) sealed container (pre-treated by soaking, washing, and preheating) for pre-digestion until gas release occurs. After the reaction slows down, the container is covered, placed in a stainless steel sleeve, sealed, and placed in an electrically heated drying oven for sealed heating digestion. Then, acid removal and volume adjustment are performed to obtain the test solution. A series of standard solutions for mercury and arsenic are prepared, and a standard curve is plotted. The obtained digested solution is then tested using an atomic fluorescence spectrometer to obtain the fluorescence intensity. The content of the corresponding elements in the coal briquettes is calculated using the standard curve. This invention can accurately measure the content of volatile trace elements, such as mercury and arsenic, in coal briquettes.

The application provides a kind of quick detection device of trace element of calcined petroleum coke for negative electrode material production, and relates to the technical field of trace element detection.The quick detection device of trace element of calcined petroleum coke for negative electrode material production includes: exhaust component, the exhaust component is used to guide gas flow, filter mechanism is arranged inside the exhaust component.The quick detection device of trace element of calcined petroleum coke for negative electrode material production adopts conical cylinder layered sleeve joint structure through filter mechanism, cooperates with the filter hole that gradually reduces from inside to outside, can carry out layered interception to different particle size petroleum coke particulate matter, at the same time, the sliding groove of collecting groove and conical cylinder gap one-to-one correspondence, realize the layered collection of different particle size particulate matter, can accurately analyze the trace element distribution characteristics under different particle sizes, improve the comprehensiveness of detection, achieve the effect of layered collection and detection of calcined petroleum coke particulate matter, solve the problem that the difference of sampling particle diameter affects the content of trace element detection.

The application provides a method for determining the genesis and sedimentary environment of siliceous rocks by using multi-index comprehensive analysis, relates to the technical field of geological exploration and geochemistry, and comprises the following steps: pretreating a siliceous rock sample to obtain a to-be-tested powder sample; testing the to-be-tested powder sample to obtain the content of corresponding elements; calculating and obtaining a genesis parameter for characterizing the genesis type of the siliceous rock, and then obtaining a genesis type determination result; calculating and obtaining an environment parameter for characterizing the sedimentary environment of the siliceous rock, and then obtaining a sedimentary environment determination result; and comprehensively analyzing and cross-verifying the determination results to form a final discrimination conclusion. The application can effectively distinguish hot water deposition, biological genesis and composite genesis siliceous rocks by comprehensively analyzing multiple indexes such as major elements, trace elements and rare earth elements, and combining multiple graphic cross-verifications, obviously reduces the multi-solution and subjectivity of traditional single-index discrimination, and accurately determines the sedimentary environment such as continental margin and ocean basin through element ratio and graphic analysis.

This invention relates to the field of coal-based solid waste resource utilization technology, and discloses a method for extracting and detecting trace elements boron and molybdenum in coal gangue, comprising two parallel methods: alkali fusion and acid dissolution. In the alkali fusion method, coal gangue is mixed with anhydrous sodium carbonate at a ratio of 1:8, and the mixture is heated stepwise to 900-920℃ for 30 minutes. The melt is then dissolved in hot water and hydrochloric acid to obtain the test solution. In the acid dissolution method, coal gangue is pretreated by calcination at 550℃, digested with a mixed acid (hydrochloric acid, nitric acid, hydrofluoric acid, and perchloric acid in a volume ratio of 3:1:3:1) at 200℃, and the acid is removed before dissolving in hydrochloric acid to obtain the test solution. The boron and molybdenum contents in both test solutions are determined spectrophotometrically. Boron is determined using the methylimine colorimetric method at a wavelength of 420 nm, and molybdenum is determined using the ammonium thiocyanate extraction method at a wavelength of 470 nm. This invention provides two methods suitable for the extraction and detection of trace elements boron and molybdenum in coal gangue, with advantages of thorough decomposition, good repeatability, and high accuracy.

This invention belongs to the field of isotope geochronology, specifically relating to a laser ablation fractionation method and system for analyzing the U-Pb age, trace elements, and Hf isotopes of zircon. This invention employs wet plasma technology to improve the uranium detection sensitivity of Q-ICP-MS and ensure the consistency of thorium / uranium fractionation behavior, reducing the difficulty of Q-ICP-MS setup. A gas path connection design with different inner diameters replaces the micro diaphragm pump, achieving stable transmission of unequal amounts of aerosol to two mass spectrometers, reducing experimental costs and improving instrument setup efficiency. The acquired data is converted into a time series, and a multi-external standard correction scheme is used to achieve automated and accurate LASS analysis. This invention utilizes LASS technology to conveniently and accurately determine the U-Pb geochronology, trace element, and Hf isotopic composition of zircon simultaneously, which is beneficial for expanding the application of zircon in geological research.

The application discloses a kind of sedimentary basin hydrothermal activity tracer method, belong to geochemistry and isotopic tracer field.The tracer method includes the pretreatment of mixed mineral sample, lithium element separation and purification and δ 7 Li carb Value determination;The correlation analysis of δ 7 Li carb Value and the main trace element characteristics of sample;The measurement δ 7 Li carb Value of mixed mineral sample is corrected: the correlation analysis of corrected data of mixed mineral sample and hydrothermal activity index and anti weathering index;Determine the δ 7 Li 校正后 Background value in study sequence, judge hydrothermal activity enhancement period, hydrothermal activity weakening period or non-hydrothermal dominant period by comparing lithium isotopic ratio of continuous section and background interval value difference.The method has the advantages of continuous high resolution, wide temperature range sensitive response, mechanism is clear, strong anti-interference ability and strong universality.

This invention relates to the technical field of feed additives, specifically a sucrose-trace element multi-component chelate feed additive and its preparation method. The feed additive comprises a sucrose-trace element chelate and a sucrose-citric acid-trace element ternary copolymer chelate structure, with a solubility ≥99% in the pH range of 4-7. The trace elements include iron, copper, zinc, and manganese, with a weight ratio of (1-5):(0.5-2):(1-4):(0.5-3). The mass ratio of sucrose to trace elements in the feed additive is (2-5):1, and the mass ratio of citric acid to trace elements is (0.5-2):1. This sucrose-trace element multi-component chelate feed additive has a stable structure, high absorption rate, and synergistic antioxidant function.