X-ray analyzer of gold and heavy elements

FIELD: mining.

SUBSTANCE: usage: for X-ray spectral analysis of gold and heavy elements. Technical character of the invention lies in the fact that the X-ray analyzer of gold and heavy elements comprises X-ray tube with a side window as a radiation source, a sample holder, the detection device with detectors disposed in line, the recording apparatus, the inputs of recording apparatus are connected to the outputs of the detector, collimators and filters of primary and secondary beams, wherein the secondary beam collimator is designed with a plurality of holes or channels, thereby the sample holder is designed to install the sample with a flat or concave working surface of a cylinder, the X-ray tube axis is positioned in the plane perpendicular to cylinder, its focus is positioned at the generating line passing through the diametrically opposite cylinder point, wherein the secondary beam collimator is designed with beam dividers in the plane axial to theelectron beam.

EFFECT: invention provides uniformity and strength of the sample, improves efficiency and expand contrast of the spectra.

4 dwg, 1 tbl

 



 

Same patents:

FIELD: physics.

SUBSTANCE: this device comprises primary X-ray radiation source and excitation flux generator. Analysed material specimen fitted on holder is arranged inside excitation flux generator parallel with direction of propagation of this flux. X-ray fluorescent radiation detector is located opposite specimen holder with specimen fitted thereon. Excitation flux generator is composed of a flat X-ray waveguide-resonator with clearance between reflectors of nano-sized magnitude. Note also that said generator has hole to introduce analysed material in specimen flux so that its analysed surface is located in reflector plane located opposite aforesaid detector. Besides it incorporates radiation recorder detector located at waveguide-resonator outlet. Said detector allows positioning of this device relative to primary radiation source. Note here that specimen holder can displace independently of waveguide-resonator in direction perpendicular to direction of excitation radiation flux propagation. Radiation recoding detector can register radiation that passed through waveguide-resonator and control the specimen input to excitation radiation flux.

EFFECT: controlled feed of specimen to excitation radiation flux.

20 cl, 2 dwg

FIELD: mining.

SUBSTANCE: method of detecting rubin-containing calciphyres includes selection of calcite monofractions from alternating zones of calciphyres followed by determining the presence of ruby mineralisation. In selected samples of calcite the luminescence is excitated in the optical wavelength range, and the areas are determined with the presence of ruby mineralisation on a sharp drop in the intensity of radiation in the wavelength range of 600-640 nm.

EFFECT: cost reduction, increased rapidity and reliability of the preliminary assessment of ruby mineralisation.

5 dwg

FIELD: physics.

SUBSTANCE: minerals are sampled; X-ray fluorescence is excited therein in the optical wavelength range to recognise a mineral; the X-ray fluorescence spectra are recorded for the prepared samples in the wavelength range of 200-500 nm, and kaolin mineral is recognised by luminescence bands in the wavelength range of 290-400 nm with maximum emission at λ=335-357 nm; dickite is recognised by maximum emission at λ=350-370 nm; montromorillonite is recognised by luminescence bands in the wavelength range of 320-380 nm at maximum emission at λ=320-350 nm; pecoraite is recognised by luminescence bands in the wavelength range of 270-400 nm at maximum emission at λ=280-330 nm; nacrite is recognised by a wide X-ray fluorescence band at λ=270-500 nm at maximum emission at λ=340-350 nm.

EFFECT: higher expressivity and reliability of clay matter tests.

1 tbl, 6 dwg

FIELD: physics.

SUBSTANCE: X-ray fluorescence analyser comprises, in an insulated housing, a primary X-ray source, a collimator configured to form a collimated beam of primary X-rays in the form of a sheet-like beam, and a liquid sample fluorescent radiation detector, mounted such that their optical axes lie in one plane; the sampling device used is a plunger, one end of which enters a liquid inlet/outlet channel while ensuring air-tightness of an external pressure-resistant housing, wherein the surface of the plunger has a flat area with incisions in the form of grooves with flat walls which are parallel to each other, and the plunger is arranged to ensure orientation of the incisions parallel to the plane of the optical axes of the X-ray source, the collimator and the fluorescent radiation detector, wherein the mutual arrangement of the collimator and the plunger provide an angle of total external reflection of the collimated beam of primary X-rays from the flat area of the plunger with incisions, and the dimensions of the flat area of the plunger with incisions are comparable with cross-sectional dimensions of the collimated beam of primary X-rays.

EFFECT: improved performance of the apparatus when conducting real-time underwater X-ray fluorescence analysis without sample preparation and in conditions with variable dynamic loads.

11 cl, 3 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: claimed invention relates to the field of soil chemistry, namely to methods of determining rare earth elements Pr, Nd and Sm in soils, and describes an X-ray radiometric energy-dispersive method of determination of the Pr, Nd and Sm content in soils, which includes the determination of elements Ba, La, Ce with a radioisotope source 241Am by means of the following stages: accumulation of an initial spectrum of an analysed sample in an interval of energies 31-41 keV; building a model spectrum of interfering with their superposition Kβ-lines of Ba, La and Ce with further determination of true intensities of spectral Kα-lines of Pr, Nd, Sm, calculation of the concentration of elements to be found by the generalised calibration curve of dependence of lanthanides La, Ce, Pr, Nd, Sm concentrations on intensities of the lines.

EFFECT: invention provides the determination of Pr, Nd and Sm concentrations in soils.

3 dwg, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: method includes determining intensity IA of the analytical line of the determined element A in the analysed material, calculating intensity IA2I in sample mixtures of the analysed material and a comparison sample with given content CBji of the determined element and comparing the intensity IA and IA2I quantitatively to obtain an estimate of the content CA of the determined element in the analysed material. Estimation of the content of the determined element in the analysed material is carried out in the order of determining first the intensity IA0 and content CA0 of the determined element in the comparison sample, as well as significant coefficients of influence of "interfering" elements contained in the analysed material on the intensity of the determined element in the material, experimentally determining intensities of analytical lines of "interfering" elements contained in the analysed material and the comparison sample, converting the intensities IA and IA0 of the determined element A in the analysed material and the comparison sample, respectively, by taking into account intensities and significant influence coefficients of "interfering" elements and quantitative comparison of converted intensities IAj and IA2I in the analysed material and calculation sample mixtures, respectively.

EFFECT: high accuracy of estimating content of an element.

5 tbl, 4 dwg

FIELD: metallurgy.

SUBSTANCE: single-component of alloy or solid solution components plies are applied on substrate in depth which ensures component atom ratio corresponding to that in standardised alloy or solid solution.

EFFECT: simplified production.

FIELD: measurement equipment.

SUBSTANCE: to determine weight concentration of clay in a sample of a porous material they select a water-soluble salt of metal that undergoes a selective ion-exchange reaction with clay, with the general formula R+M-, where the metal R+ is selected from the group {Ba2+; Sr2+; Tl+; Rb+…}, M- is selected from the group {Cln; NOn; OHn; CH3COO, SO4;…} in accordance with the table of solubility of inorganic substances in water. Clay is marked by mixing of clay with an aqueous solution of selected metal salt, remains of the metal salt that have not reacted with clay are removed. Roentgen-fluorescent spectrometry of marked clay and sample are carried out, and content of the metal is determined in the marked clay, as well as natural content of the metal in the sample. The aqueous solution of the marked clay is pumped through the sample, the sample is dried, and roentgen-fluorescent spectrometry of the entire sample or its separate segments is carried out. They determine the content of the metal in the sample or in each segment and calculate weight concentration of clay retained in the sample or in each of its segments.

EFFECT: provision of the possibility to measure low weight concentration of clay that penetrated pore space of a sample in process of injection of a clay-containing solution.

4 cl, 1 dwg

X-ray analyser // 2504756

FIELD: physics.

SUBSTANCE: X-ray analyser is made of flat elements having scintillator layers arranged along the direction of propagation of radiation, non-transparent in said direction and transparent in a perpendicular direction, and a substrates in form of a cellular structure, wherein the scintillator layers are in form of scintillation plates placed one above the other, said plates being made of polystyrene with length of not less than 3 mm, CaF2 with length of not less than 2 mm, ZnO with length of not less than 2 mm, Csl with length of not less than 8 mm and BGO with length of not less than 15 mm.

EFFECT: enabling determination of the spectrum of X-ray radiation in the range from 0,3 keV to 1,0 MeV using one sensor, easy implementation and measurement procedure, enabling measurement of spectra of pulsed radiation.

1 dwg

FIELD: physics.

SUBSTANCE: apparatus (1) for X-ray fluorescence analysis of a mineral sample includes: an X-ray source (2) for generating an X-ray beam to irradiate the mineral sample; at least one fluorescence detector (4,5) for measuring fluorescent radiation emitted by the mineral sample when irradiated by the X-ray beam; a processing unit for providing analysis of the mineral sample based on the measurements made by said at least one fluorescence detector (4,5), wherein said apparatus (1) further includes: a sample container (3) arranged to hold the mineral sample during irradiation, wherein the sample container is arranged to provide at least two different irradiation paths through said mineral sample during irradiation, and a controller means to adjust the X-ray tube voltage of said X-ray source (2) in accordance with the length of the irradiation paths.

EFFECT: high reliability and accuracy of X-ray fluorescence analysis.

22 cl, 5 dwg

FIELD: analysis of water and organic solutions.

SUBSTANCE: sensor has multi-channel structure in form of length 1 of poly-capillary pipe with through capillary, forming micro-channels, which are filled with two layers of non-mixing substances. One layer 4 is formed by water or water solution and other 3 - by organic substance. In first of said layers into micro channels micro-granules 5 of absorbent are placed.

EFFECT: higher efficiency, lower costs.

27 cl, 14 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: device comprises measuring zone made of a section of pipeline for the fluid flow, roentgen fluorescence analyzer provided with a baffle transparent for the roentgen rays and connected with the measuring zone through a cylindrical cutting-in by means of a fastening mechanism for permitting vertical movement of the roentgen fluorescence analyzer in the measuring zone, and arrangement for destructing the flow made of top and bottom flat guides. The axes of the guides intersect at an angle whose top is located in front of the roentgen-ray- transparent baffle. The device is provided with a by-pass for fluid flow whose inlet opening is positioned in the top section of the measuring zone upstream of the arrangement for destructing the flow. The outlet opening is positioned in the top section of the measuring zone downstream of the roentgen fluorescence analyzer. In the measuring zone, upstream of the outlet opening of the by-pass for fluid flow, is an additional baffle.

EFFECT: enhanced accuracy and reliability of analyzing.

1 cl, 1 dwg

FIELD: finding of mole content of metals in heterobimetal compounds.

SUBSTANCE: mole content of metals is found by X-ray fluorescent method which includes preparation of compared samples which have tested metals in known mole content. Intensity of fluorescence of any tested metal in compared samples is measured and graduation curve is built. Intensity of fluorescence of any metal is tested sample is measured and mole content of metals is determined from graduation curve. For measurement of intensity of fluorescence the absorbing layer of sample is used which layer has thickness of 250 micrometer maximum.

EFFECT: ability f conducting nondestructive inspection.

3 dwg

FIELD: the invention refers to modes of location of targets in a cloud of passive interference and may be used in locators.

SUBSTANCE: the achieved technical result of the invention is the separation of the required object (objects) in a cloud of dipoles without conducting processes of detection and identification of all targets in the cloud of a complex target. The indicated result is achieved by way of irradiating of the targets with a probing signal in the shape of an electron beam for obtaining responses from the targets due to generation in the substance mass of the target of breaking x-ray or gamma-radiation and separation of the response from the target with the help of a receiver in direct proportion to the quantity of the atoms in this target (in the limits of the depth of the run of β-electrons) and their atomic number. The passive interference is fulfilled out of frame cloth constructions, a thin aluminum wire or synthetic film covered with an aluminum layer with mass in units and quotas of a gram will give a response on several levels less than a true target with mass of several hundreds of kilograms fulfilled mainly out of steel.

EFFECT: higher efficiency.

1 dwg

FIELD: the invention refers to modes of location of targets in a cloud of passive interference and may use application in locators.

SUBSTANCE: the achieved technical result of the invention is the separation of the required object(objects) in a cloud of dipoles without conducting processes of detection and identification of all targets in the cloud of a complex target. The indicated result is achieved by way of irradiating of the targets with a probing signal with a carrier frequency in the field of x-ray or y-radiation with the purpose of receiving responses from the targets not due to the induction of currents in conducting cover of the target or due to interference but due to scattering of x-ray beams on the electronic shells of the atoms or gamma-rays atomic nucleuses of the whole mass of the substance of the target(Compton's effect) and separation because of this of a response from the target with the help of a receiver in direct proportion to the quantity of the atoms in this target, their atomic number(for scattering of x-ray radiation) or the mass figure of the nucleus(for scattering of y-radiation). The passive interference is fulfilled out of frame cloth constructions, a thin aluminum wire or synthetic film covered with an aluminum layer with mass in units and quotas of a gram will give a response on several levels less than a true target with mass of several hundreds of kilograms fulfilled mainly out of steel. The response will be at its maximum at filling the fighting equipment of the target with fissible material.

EFFECT: allows to separate a required object(objects)in the cloud of dipoles.

1 dwg

FIELD: technology for detecting rhenium, rhenium in presence of molybdenum and tungsten.

SUBSTANCE: rhenium is detected by method of roentgen-fluorescent analysis by analytical line Lβ2, preliminarily concentrating it on surface of activated coal with utilization of ultraviolet radiation.

EFFECT: possible detection of rhenium, and also rhenium in presence of molybdenum and tungsten by roentgen-fluorescent analysis method.

3 dwg

FIELD: registration of absorption spectra of small luminescent specimens.

SUBSTANCE: the absorption spectrum of small luminescent specimens is determined according to relation of intensities of light fluxes that have passed and not passed through the specimen, the luminescence of the standard specimen is used as the specimen through which the radiation flux has not passed, and the luminescence of the examined is used as the specimen through which the radiation flux has passed, and the absorption spectrum of the examined specimen is calculated according to the respective mathematical formula.

EFFECT: expanded functional potentialities due to the increase of the range of specimens suitable for measurements without special preparation of them.

5 dwg

FIELD: analysis of substance composition.

SUBSTANCE: the roentgen-radiometric analyzer of substance composition has a measurement chamber with a source of X-ray radiation, collimator and a detector, amplitude analyzer and a registering device, the measurement chamber is V-shaped, it provides for minimizing the distance between the sample and the detector, the telescopic collimator is provided with a cylindrical holder of the primary radiation filter that can rotate about its axis and move along its axis, and the sample holder can change the position of the sample relative to the radiator and detector.

EFFECT: simplified construction, provided portativity, enhanced radiation safety, expanded range of analyzed elements and enhanced sensitivity threshold without any use of helium filler at an analysis of samples of a complex substance composition.

3 dwg

FIELD: x-ray radiometric analysis of composition of pulps and solution.

SUBSTANCE: device for x-ray radiometric analysis of composition of pulps and solutions contains a source of radiation and detection block, connected to wall of vessel with substance being analyzed through a port for passage of radiation, covered by films on both sides, while external film of port, directly in contact with substance being analyzed, is made of material either already having negative electric charge, or capable of accumulating such a charge by means of friction with environment, and also, behind the inner film a contour of electro-conductive material is positioned, connected to source of negative potential of electric power block.

EFFECT: increased precision and trustworthiness of analysis of elementary composition of pulp.

1 dwg

FIELD: analytical methods.

SUBSTANCE: method comprises hydrolysis of uranium hexafluoride sample and sodium nitrite-mediated reduction of bromates into bromides, whereupon samples are formed by selective precipitation of bromide ions on thin layer of as-precipitated silver chloride followed by washing of precipitate with weak nitric acid solution and fixation thereof with polymer film, after which content of bromine is found from intensity of fluorescent emission in formed test and reference samples.

EFFECT: enabled reliable determination of bromine at a level thereof about 5 ppm based on the uranium content.

Up!