164 results about "Barium" patented technology

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

The invention belongs to the technical field of ceramics, and particularly relates to a three-dimensional effect glaze, a three-dimensional effect ceramic tile and a preparation method thereof. The three-dimensional effect glaze is composed of honeycomb ground glaze and honeycomb effect glaze; the honeycomb ground glaze comprises the following mineral components in percentage by mass: 20%-30% of quartz, 5%-10% of kaolin, 12%-18% of albite, 7%-15% of calcite, 2%-7% of wollastonite, 12%-17% of calcined talc, 15%-25% of calcined zinc oxide, 2%-6% of titanium dioxide, 2%-4% of glass powder, 1%-3% of strontium carbonate and 1%-5% of dolomite. The glaze with the honeycomb effect comprises the following mineral components in percentage by mass: 5%-15% of quartz, 5%-10% of kaolin, 40%-55% of albite, 2%-6% of barium ice feldspar, 2%-10% of calcite, 7%-15% of calcined talc, 1%-4% of calcined zinc oxide, 7%-15% of red mud and 3%-5% of coal gangue. The novel effect glaze is developed, the glaze surface is flat and smooth, meanwhile, the ground glaze is pushed to the surface through the gas phase disturbance effect, and the effect glaze sinks and wraps the ground glaze in a three-dimensional honeycomb shape.

The invention discloses a simple preparation method of a barium-based metal organic framework (Ba-H2Sip) and proton conduction application of the barium-based metal organic framework (Ba-H2Sip), belongs to the field of functional material synthesis and energy application, and is characterized in that functional differentiation design of a 5-sulfoisophthalic acid ligand: a sulfonic group forms a two-dimensional layered structure by chelating Ba < 2 + >; the carboxyl groups are differentiated into'anchoring carboxyl groups' for constructing a three-dimensional supramolecular skeleton and'proton supply carboxyl groups' for providing a proton source, and the design is reported for the first time in Ba-based MOFs; according to the present invention, the large-scale preparation can be achieved by stirring the low-cost raw material in 1 mol / L hydrochloric acid at the room temperature, the yield exceeds 70%, the product can resist 8 M acid and pH = 13 alkali liquid, the conductivity at 90 DEG C / 90% humidity can achieve 1.39 * 10 <-2 > Scm <-1 >, the high-temperature process is not required, the raw material is low in cost and easy to obtain, and the feasible scheme is provided for the high-efficiency proton conductor industrialization.

The invention discloses a method for analyzing the content of nitrogen in silicon-calcium-barium, which comprises the following steps of: filling a prepared powder sample into a graphite crucible filled with a tin sheet, heating by a pulse electrode furnace until the powder sample is molten, extracting nitrogen in a molecular form in helium flow, separating the nitrogen from other gas extracts, and measuring by using a thermal conductivity method. According to the method for analyzing the content of nitrogen in silicon-calcium-barium, the tin sheet is adopted as the fluxing agent, nitrogen release is greatly improved, and the accuracy of the determination method is improved. The method is simple, rapid and accurate in determination process.

The invention relates to an M-type barium ferrite single crystal material and a preparation method and application thereof.The preparation method comprises the steps that metal source mixed powder and a fluxing agent are evenly mixed and subjected to primary sintering, and the metal source mixed powder comprises a barium source and an iron source; and carrying out secondary sintering on the obtained intermediate powder to obtain the M-type barium ferrite single crystal material. Wherein the secondary sintering comprises a heating stage, a heat preservation stage and a cooling stage, and the cooling stage comprises first-stage cooling, second-stage cooling and third-stage cooling which are sequentially carried out. According to the invention, the fluxing agent and the raw materials are added to form a eutectic system, melting can be realized at a temperature far lower than the melting point of the raw materials, and the cooling process is accurately controlled to slowly separate out the target M-type barium ferrite single crystal from the supersaturated molten liquid and reduce thermal stress and defects, so that the M-type barium ferrite single crystal material with high integrity and high purity is obtained. And moreover, the preparation method disclosed by the invention is simple, low in cost and easy for large-scale industrial production.

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

A process for producing amines by reductive amination, the process includes introducing a feed stream, the feed stream comprising an amino alcohol and a reducing agent, and hydrogen in a reaction zone of a reactor, and contacting the feed stream with a catalyst in the reaction zone. A hydrogen flow rate into the reaction zone is adjusted, and a product stream comprising ethyleneamines is extracted. The catalyst includes a carrier component selected from alumina, silica, and combinations thereof; and an active component having a first metal, a second metal, and a third metal. The first metal is selected from cobalt, nickel, and copper, the second metal is selected from rhenium, ruthenium, chromium, zinc, sodium, calcium, magnesium, strontium, lithium, potassium, barium, cesium, lanthanum, tungsten, iron, silver, titanium, manganese, aluminum, rhodium, platinum, palladium, iridium, and combinations thereof, and the third metal is niobium.

A multilayer piezoelectric element includes: (i) multiple piezoelectric ceramic layers, wherein: a primary component constitutes a perovskite structure of an alkali niobate; at least one of calcium, strontium, and barium, and silver, are contained; 0.1-2.0 mol of lithium, and 1.5-4.0 mol of silicon, per 100 mol of the primary component, are contained in a manner that a ratio of Li / Si becomes 0.025 or higher but under 0.40; and as measured with an X-ray diffraction measurement, a strongest diffraction line intensity (Imax) at 10.00°≤2θ≤50.00°, a strongest diffraction line intensity (IL2S) at 26.50°≤2θ≤27.50°, and an average value of diffraction line intensity (IBG) at 27.50°≤2θ≤29.00° satisfy a relationship R1=(IL2S−IBG) / (Imax−IBG)×100≥0.20; and (ii) internal electrodes that are placed between the multiple piezoelectric ceramic layers, and formed by a metal whose silver content is 80% by mass or higher.

The present invention relates to a preparation method of a barium strontium sulfate descaling agent, comprising the following steps: adding a prepared additive solution to a prepared chelating agent alkaline solution, fully mixing and dissolving the solution, and adjusting the pH to alkaline, thereby obtaining the barium strontium sulfate descaling agent. The present invention has the following beneficial effects: the preparation method of the present invention can significantly improve the descaling effect of the descaling agent on barium strontium sulfate scale, increase the contact area with metal ions, thereby improving the overall descaling effect, effectively destroying the formation of barium strontium sulfate scale, and the descaling agent still maintains a stable descaling effect under high temperature conditions, and has broad industrial application prospects. The chelating agent used not only has good metal ion chelating effect, can effectively complex barium, strontium ions, and destroy the formation of barium sulfate and strontium sulfate crystals, but also has the characteristics of being stable under high temperature and high pH value, being suitable for complex industrial conditions, and performing well in neutral and alkaline water, and is also more environmentally friendly.

The present invention discloses a crystalline aluminosilicate small-pore zeolite having a maximum ring size of eight tetrahedral atoms, wherein the zeolite comprises copper, wherein the Cu: Al atomic ratio is between 0.12 and 0.55; and manganese, wherein the Mn: Cu atomic ratio is between 0.05 and 0.95; and a metal M, wherein M is selected from magnesium, calcium, barium, strontium, yttrium, titanium, zirconium, niobium, iron, zinc, silver, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof, and wherein the M: Cu atomic ratio is between 0.05 and 0.80; and wherein the sum of the atomic ratios of copper, manganese and the metal M to aluminum, (Cu+Mn+M): Al, is between 0.20 and 0.80; and wherein the zeolite comprises at least 2.5 wt.-% of copper, calculated as CuO and based on the total weight of the zeolite. Catalyst substrate monoliths comprising the crystalline aluminosilicate zeolite are also disclosed. These catalyst substrate monoliths can be used in a process for the removal of nitrogen oxides from combustion exhaust gases, and they can be part of emissions treatment systems.

The application relates to the technical field of barium titanate preparation, and discloses a preparation method of barium titanate powder, which comprises the following steps: (1) adding 15% ammonia water solution into a stirring tank, weighing a certain amount of TiCl4 and slowly dropping the TiCl4 into the stirring tank, continuously stirring for 1 h, and obtaining a titanium source solution; (2) adding pure water into a heatable stirring tank, continuously stirring, weighing a certain amount of Ba(OH)2.8H2O and putting the Ba(OH)2.8H2O into the stirring tank, heating and raising the temperature to 100 DEG C and keeping for 2 h, using 15% ammonia water solution to adjust the PH to 13.5, and obtaining a barium source solution; (3) slowly adding the titanium source solution into the barium source solution, then transferring the mixed solution into a hydrothermal reaction kettle, then adding a reaction regulator into the reaction kettle, collecting the solid after multiple washing and drying, and high-temperature calcining the solid, so as to obtain the barium titanate powder; and the application has the effect of improving the tetragonal phase content of the barium titanate powder.

A hydrogen production method includes the heating of a catalyst in a furnace under reducing conditions to a first temperature, exposing the catalyst to water at a second temperature, and forming oxygen and hydrogen by thermolysis of the water, where the catalyst may include a barium niobate-based perovskite structure having the chemical formula of Ba1−x(AE)xNb1−(y+z)(AE)yMzO3−δ wherein AE is an alkaline earth (AE) element and M is a metal. M may include a transition metal or a rare earth metal. AE may include Mg, Ca, Sr, or a combination thereof. AE may alternatively include K, Rb, Cs or a combination thereof. M may include Fe, Co, Ni, Y, Yb, W, Ta, Pr, or a combination thereof. M may include Sc, Ti, V, Cr, Mn, Cu, Zn, Zr, Mo, La, Ce, Sm, Gd, W or a combination thereof.

Cathode and electrochemical cells are provided in which a barium, bismuth, or nickel additive is included to improve the stability of manganese dioxide at high voltages. The metal additives provided herein improve the performance of electrochemical cells.

The invention relates to the technical field of zinc hydrometallurgy, and discloses a method for rapidly determining the content of calcium, iron and barium in strontium carbonate by using ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometry), a strontium carbonate sample is directly dissolved by using dilute nitric acid, filtration is not needed, and the pretreatment process is simplified; meanwhile, by optimizing instrument parameters and analysis wavelength of ICP-AES, rapid, synchronous and accurate determination of three impurity elements of calcium, iron and barium is realized. The method is easy and convenient to operate, high in analysis speed, good in precision and high in accuracy, can meet the requirement for rapid monitoring of the strontium carbonate raw material quality in the zinc hydrometallurgy industry, and provides reliable technical support for optimizing lead removal process parameters, improving the cathode zinc quality and reducing the production cost.

This invention discloses a gadolinium-containing rare earth composite inoculant for gray cast iron cylinder blocks. Its chemical composition and mass percentages are as follows: Si: 45-50%, RE: 4-12% (Gd: 20%, other rare earth elements: 80%), Cr: 4-12%, Mn: 3-9%, Ca: 0.5-1.0%, Ba: 2.0-3.0%, Al: 1-2%, Cu: 5%, with the balance being Fe. This inoculant incorporates rare earth elements, chromium, manganese, calcium, barium, and aluminum. On one hand, the RE element purifies the molten iron and inhibits rapid cooling; on the other hand, the interaction of these elements enhances the inoculation ability, promotes the formation of type A graphite, makes the graphite more curved and refined with blunted ends, refines and increases the pearlite content, reduces the pearlite lamellar spacing, and appropriately increases the eutectic cluster content. This improves the strength and stiffness of the gray cast iron, and enhances the cross-sectional sensitivity and machinability of the casting.

An example method for etching a barium containing layer includes patterning the barium containing layer, the patterning including exposing the barium containing layer to a carbon based ligand gas, the carbon based ligand gas reacting with the barium containing layer to form a barium containing product, and removing the barium containing product.

The invention relates to the production of radiation-shielding zinc-barium-borosilicate glass materials, in particular for X-rays and / or gamma-rays and / or fast neutrons and the like, from readily available, low-cost and abundant available starting materials by means of uniquely designed glass compositions. Sodium oxide (Na2O), silicon dioxide (SiO2), boron oxide (B2O3), calcium oxide (CaO), barium oxide (BaO), zinc oxide (ZnO), bismuth oxide (Bi2O3), gadolinium oxide (Gd2O3) and cerium oxide (CeO2) are used in particular, when mixed, a satisfactory and effective shielding effect against X-rays and / or gamma-rays and / or fast neutrons and the like is provided.

A dielectric composition includes a main component containing tantalum and at least one of barium or strontium, and a subcomponent containing calcium and silicon.

The present invention provides novel infrared-transmitting material particles that can block visible light while transmitting infrared light. [Solution] Composition formula: A x Bi y O z It contains a complex bismuth oxide represented by, In the above compositional formula, element A is one or more elements selected from calcium, strontium, and barium, Bi is bismuth, and O is oxygen. The above compositional formula comprises infrared-transmitting material particles where x, y, and z satisfy the relationships 2.5 ≤ z / y ≤ 4.0 and 0.6 ≤ x / y ≤ 1.8.

An improved atomized powder metal material containing an increased amount of free graphite after heat treatment and / or sintering is provided. The powder metal material is typically a ferrous alloy and includes carbon in an amount of 1.0 wt. % to 6.5 wt. % and silicon in an amount of 0.1 wt. % to 6.0 wt. %, based on the total weight of the powder metal material. The powder metal material can also include various other alloying elements, for example at least one of nickel (Ni), cobalt (Co), copper (Cu), tin (Sn), aluminum (Al), sulfur (S), phosphorous (P), boron (B), nitrogen (N), chromium (Cr), manganese (Mn), molybdenum (Mo), vanadium (V), niobium (Nb), tungsten (W), titanium (Ti), tantalum (Ta) zirconium (Zr), zinc (Zn), strontium (Sr), calcium (Ca), barium (Ba) magnesium (Mg), lithium (Li), sodium (Na), and potassium (K).

Compositions and methods for barium collection. Compositions for barium collection include a magnetic metal oxide core and a metal organic framework material. The metal organic framework material is coated on a surface of the core. The metal organic framework material includes a transition metal, an organic ligand chemically bonded to the transition metal, and an inorganic ion. Methods for barium collection include mixing a composition for barium collection with a water source containing barium and adsorbing an amount of barium from the water source to produce a barium-adsorbed composition and a resultant solution. Methods for barium collection also include separating barium from produced water using a magnetic force.

The present invention relates to an artificial marble including a binder resin, inorganic particles and quartz powder, in which the inorganic particles are particles including a barium element.

The present invention relates to a phosphorus-rich nano sponge comprising a porous matrix having an average size of less than 1000 nm and stabilized with a surface-active agent wherein the porous matrix is held together by ionic linkages of one or more of transition metals selected from iron, copper, titanium, vanadium, nickel, cobalt, post transition metals selected from zinc, cadmium, aluminum, tin, lead, bismuth, alkaline earth metals selected from calcium, magnesium, barium and strontium, metalloids selected from silicon, boron and tellurium, alkali metals selected from potassium, sodium and lithium, lanthanides selected from cerium, gadolinium, europium, or mixed metals. The phosphorus-rich nano sponge is selectively enriched for sustained and targeted delivery of molecular payloads.

The application discloses an iron-based barium sodium niobate ceramic material with high energy storage performance and a preparation method thereof. 4‑2x Sm 2x Na2Fe x Nb 10‑x O 30 , wherein 1<=x<=1.25. Barium carbonate, samarium oxide, sodium carbonate, ferrous oxide and niobium pentoxide are used as raw materials, and a standard solid-phase method is adopted to sinter the iron-based barium sodium niobate ceramic material. In the product formula, iron is used to replace niobium in the barium sodium niobate, which is lead-free, environment-friendly, rich in iron reserves and low in price, and is beneficial to control the cost of raw materials. In addition, the iron replacement is beneficial to enhance the relaxor ferroelectric performance of the material, can obtain a more slender hysteresis loop, and improves the energy storage efficiency of the material. The prepared ceramic material has few pores and cracks, high density, and the microstructure is obviously improved, the grain size is more fine and uniform, the ferroelectric polarization intensity and the breakdown field strength are significantly improved, the problem that the barium sodium niobate material is difficult to sinter is solved, and the ferroelectric performance and the energy storage performance are significantly improved.

The application discloses a barium-based rare earth synergistic type ultra-high insulation alkali-free glaze composition for spark plugs and a preparation method and application thereof, and belongs to the technical field of spark plug manufacturing. In order to solve the problem that the high-temperature insulation performance of the glaze of a spark plug is insufficient due to ion migration in the prior art, the application provides an alkali-free (containing no monovalent metal ion), low calcium and magnesium, high barium, rare earth and fluoride containing ultra-high insulation glaze composition for the surface of a ceramic insulator of a spark plug, and a preparation method and glazing and sintering process of the glaze. The application is a new type of alkali-free glaze taking high content BaO as an insulation core, B2O3 as a low-temperature fluxing main body and rare earth oxides as an anti-crystallization and performance enhancer, and realizes the unification of ultra-high high-temperature insulation performance, low-temperature sintering and a wide process window.

The invention relates to the technical field of mineral content detection, in particular to a method for simultaneously determining total barium and sulfur in barite through acid dissolution-inductively coupled plasma emission spectrometry. The method comprises the following steps: adding nitric acid and hydrochloric acid into barite, heating on an electric heating plate, adding a chromium internal standard solution and a nitric acid solution, heating, cooling, and determining by using an inductively coupled plasma emission spectrometer. According to the method, simultaneous determination is achieved in an acid dissolution mode, the detection efficiency is improved, time and cost are saved, the whole test solution preparation process is relatively simple, accurate volume determination is not needed, sample digestion treatment can be completed through common means such as electric hot plate heating under conventional laboratory conditions, and the method is more stable, easy and convenient to operate, easy to master and suitable for large-scale popularization and application. The reproducibility is good, and popularization and application are convenient. Meanwhile, the method can improve the accuracy and precision of a measurement result, so that the measurement result is more reliable.

The present invention belongs to the field of high-temperature superconducting materials and particularly relates to a gadolinium ytterbium barium copper oxide superconducting film and a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing a solution containing 2-thenoyltrifluoroacetone; S2, adding gadolinium oxide and ytterbium oxide to react with nitric acid to obtain a mixed solution containing gadolinium nitrate and ytterbium nitrate, mixing the solution obtained in S1 with the mixed solution, adding seed crystals to react, standing, separating and drying to obtain a gadolinium ytterbium coordination complex; S3, mixing the gadolinium ytterbium coordination complex obtained in S2, a barium source, a copper source and a solvent, and growing the gadolinium ytterbium barium copper oxide superconducting film on a substrate surface by an organometallic chemical vapor deposition method using oxygen as an oxygen source; the molar ratio of gadolinium nitrate to ytterbium nitrate is (0.7-0.78):(0.22-0.3). The gadolinium-ytterbium coordination complex prepared by the invention has good volatility and high thermal stability; the generated film has few impurities and holes, a smooth surface, and excellent electrical and magnetic field properties at low temperature and high field.

Water containing less than 60 Hz of minerals is disclosed. The water containing less than 60 Hz of minerals contains, as active ingredients, 0.04-34 parts by weight of minerals from which at least one electron has been removed, among germanium (Ge), silver (Ag), iridium (Ir), nickel (Ni), palladium (Pd), tantalum (Ta), antimony (Sb), zinc (Zn), indium (In), boron (B), astatine (At), thallium (Tl), magnesium carbonate (MgCO3), tin (Sn), iron (Fe), calcium sulfide (CaS), molybdenum (Mo), chromium (Cr), sodium (Na), tungsten (W), gallium (Ga), strontium (Sr), potassium (K), beryllium (Be), barium (Ba), magnesium (Mg), scandium (Sc), yttrium (Y), calcium (Ca), titanium (Ti), vanadium (V), hafnium (Hf), bromine (Br), zirconium (Zr), copper (Cu), manganese (Mn), rubidium (Rb), technetium (Tc), platinum (Pt), niobium (Nb), gold (Au), phosphate (Pi), rhenium (Re), ruthenium (Ru), cobalt (Co), zinc oxide (ZnO), aluminum (Al), selenium (Se), bismuth (Bi), phosphorus (P), rhodium (Rh), silicon (Si), iodine (I), tellurium (Te), sulfur (S), lithium (Li), osmium (Os), magnesium hydroxide (Mg(OH)2), and cesium (Cs), mixed with 100 parts by weight of water, wherein there are at least 5 types of minerals.

A method of increasing porosity of graphitic carbon black comprises combining graphitic carbon black having a Raman planar size (La) of at least 20 Angstroms with at least 100 ppm of an alkaline earth element selected from strontium, barium, and a mixture of both to form a mixture, and contacting the mixture with an etchant at a temperature of 900-1400° C. until 2%-85% of the mass of the carbon black is lost.

This invention belongs to the field of intelligent piezoelectric materials technology, and discloses a grain-oriented piezoelectric ceramic material and its preparation method. The grain-oriented piezoelectric ceramic material is... <001> Oriented and ferromagnetic barium titanate / strontium-based template seed crystals, with the general formula: X Pb 1‑1.5x R x (B1,B2)O3- Y Pb 1‑y A y (B1,B2)O3-(1- X - Y-Z PbB3O3- Z The ceramic matrix of PbTiO3, wherein A is one or more of barium, strontium, calcium, and bismuth; B1 is one or more of magnesium, nickel, indium, and scandium; B2 is one or more of niobium, tantalum, and antimony; B3 is zirconium or tin; and R is one or more of Sm, La, Nd, Eu, Ce, Pr, Dy, and Er. x is between 0.001 and 0.2, y does not exceed 0.1; X is between 0.1 and 0.3, Y is between 0 and 0.2, and X+Y+Z=1. The raw materials are calcined according to the general formula to obtain perovskite powder. Subsequently, through casting, lamination, cutting, debinding, and calcination, the grain-oriented piezoelectric ceramic is finally obtained. This process can achieve high piezoelectric performance while maintaining a high Curie temperature, solving the problem of the incompatibility between high piezoelectric performance and high phase transition temperature in materials.