95 results about "Sulfur" patented technology

The invention discloses a method for preparing a single-layer tungsten diselenide nanoband based on a space confinement strategy. By changing the flow and the growth time of hydrogen, effective control on the width and the thickness of a nanoband can be realized. The method comprises the following steps: uniformly spraying tungsten trioxide powder to one substrate, then covering the substrate by the other substrate, and forming micro reaction space which is of a 'sandwich'-like structure. Growth of a tungsten diselenide nanoband is carried out by utilizing a constant-pressure chemical vapor deposition method; physicochemical characteristics of a one-dimensional transition metal chalcogenide strongly depend on suspension key types on the edge of the one-dimensional transition metal chalcogenide, metallic properties are displayed by an ultranarrow band, and conversion from the metallic properties to semiconductor properties can be displayed from the edge to the center of a wider band; the tungsten diselenide nanoband is widely applied to micro-nano photoelectric devices due to the special property; industrial production of the tungsten diselenide nanoband can be realized through an experimental method of the invention.

This invention relates to a method for the recovery of metal from a material comprising: contacting a material with a first reagent comprising a thiocarbonyl group and a second reagent under various conditions. The metal may be a base metal, a precious metal, or a combination thereof. The conditions include, but are not limited to, recovery in the presence of a microbe; optimal material size and / or shape; geolocation parameters; elemental sulfur; added pyrite; or a combination thereof.

1. The name of the design product: flame photometric detector. 2. The use of the design product: for detecting phosphorus-containing compounds and sulfur-containing compounds. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention relates to a pre-hardened die steel alloy and a preparation method thereof, the alloy comprises the following chemical components in percentage by mass: 0.40-0.50% of carbon, 0.20-0.40% of silicon, 1.20-1.60% of manganese, less than or equal to 0.010% of sulfur, less than or equal to 0.025% of phosphorus, 1.50-1.80% of chromium, 0.35-0.50% of molybdenum, 0.15-0.25% of vanadium, 1.65-1.85% of nickel, less than or equal to 0.20% of copper and the balance of iron, and the content of residual gases is less than or equal to 70ppm of nitrogen, less than or equal to 1.0 ppm of hydrogen and less than or equal to 20ppm of oxygen. The pre-hardened die steel alloy is directly pre-hardened to 44-46 HRC, meanwhile has good machining performance, can be directly cut and machined into a die finished product, does not need secondary quenching, saves the cost of vacuum heat treatment and the heat treatment time, can replace die steel 1.2343, and has great performance advantages and competitive advantages.

The invention relates to an inhibitor for efficiently separating copper and sulfur under a low-alkalinity condition, a flotation reagent and a flotation method. The inhibitor is a compound as shown in a formula I (formula I), wherein R1, R2, R3 and R4 are respectively and independently selected from one of-R5X,-X,-H and-N + R6, R5 is alkyl of C1-C10, naphthenic base of C3-C10 or heterocyclic group of C3-C10, and the ring of the heterocyclic group is provided with or not provided with a substituent group; x is one of F, Cl, Br, I, tertiary amine positive ions, nitro, cyano, sulfo, formyl, acyl and carboxyl; r6 is a C1-C5 alkyl group or a C3-C5 cycloalkyl group; the inhibitor is low in viscosity and good in fluidity, pyrite and chalcopyrite in complex copper sulfide ore copper-sulfur ore can be effectively separated under the low-alkalinity condition, and the separation effect is remarkable.

The invention discloses a preparation method of FePS3, which comprises the following steps: mechanically mixing pyrite powder, sulfur-containing small molecules and elemental phosphorus, calcining the fully mixed powder in two temperature stages under a protective atmosphere, and cooling to obtain FePS3 nano-powder; wherein in the first temperature stage, the temperature is 200-300 DEG C, and the heat preservation time is 120-240 minutes, and in the second temperature stage, the temperature is 400-600 DEG C, and the heat preservation time is 120-180 minutes; the sulfur-containing small molecules are thiourea, thioacetamide or a mixture of the thiourea and the thioacetamide; the molar ratio of sulfur atoms to phosphorus atoms in FeS2 molecules and sulfur-containing small molecules in the pyrite powder is (1: 3: 5)-(1: 1: 5). According to the method, pyrite is used as an iron source and a sulfur source, sulfur-containing small molecules are used as a second sulfur source, and the FePS3 nano-powder is directly obtained through solid-phase reaction with the simple substance phosphorus without additional purification treatment. The method is low in solid-phase reaction temperature and simple in process, does not need harsh reaction conditions, and is easy for large-scale production.

The invention relates to the preparation of sulfur suspension, in which molten sulfur is atomized and the resulting atomized sulfur droplets are incorporated in a dispersion medium. In the process the formation of atomized sulfur droplets is separated in space and time from their incorporation. The invention also relates to the sulfur suspension produced, as well as the atomizing-suspending device used for the preparation of sulfur suspension and the rotary disc used in the atomizing-suspending device.

Provided is an ultra-high-strength reinforcing bar and a method for manufacturing the same are disclosed. In an exemplary embodiment, the ultra-high-strength reinforcing bar includes an amount of 0.10 to 0.45 wt % carbon (C), an amount of 0.5 to 1.0 wt % silicon (Si), an amount of 0.40 to 1.80 wt % manganese (Mn), an amount of 0.10 to 1.0 wt % chromium (Cr), an amount greater than 0 and less than or equal to 0.2 wt % vanadium (V), an amount greater than 0 and less than or equal to 0.4 wt % copper (Cu), an amount greater than 0 and less than or equal to 0.5 wt % molybdenum (Mo), an amount of 0.015 to 0.070 wt % aluminum (Al), an amount greater than 0 and less than or equal to 0.25 wt % nickel (Ni), an amount greater than 0 and less than or equal to 0.1 wt % tin (Sn), an amount greater than 0 and less than or equal to 0.05 wt % phosphorus (P), an amount greater than 0 and less than or equal to 0.03 wt % sulfur (S), an amount of 0.005 to 0.02 wt % nitrogen (N), and the remainder being iron (Fe) and other inevitable impurities.

The invention discloses a separation process for improving the quality of copper fine sulfur concentrate, and relates to the technical field of mineral processing engineering, the separation process comprises the following steps: S1, raw material pretreatment; s2, performing size mixing and activation with acidic water; s3, closed-loop flotation is conducted; and S4, product combination and collection. The core indexes of the total sulfur concentrate obtained through the technology are that the S + Fe grade is larger than or equal to 90%, the sulfur operation recovery rate is larger than or equal to 89%, the sulfur grade is larger than or equal to 47%, the iron grade is larger than or equal to 42%, the copper grade is smaller than or equal to 0.3%, and the arsenic grade is smaller than or equal to 0.24%, the industrial upgrading target is completely achieved, and the problem that traditional sulfur concentrate is difficult to sell is solved. The S + Fe grade of the first sulfur concentrate is larger than or equal to 91%, the first sulfur concentrate can serve as high-end sulfur concentrate to be sold independently, and the product additional value is increased.

The invention provides a method for detecting whether a wet process is healthy or not. The method comprises the steps that S1, a clean blank wafer is provided; s2, carrying out a wet process on the front surface of the wafer, wherein a solvent of the wet process contains a sulfur element; s3, performing wet processing on the back surface of the wafer, wherein a solvent for wet processing does not contain sulfur element; s4, performing defect scanning on the front surface of the wafer to obtain a first scanning result; s5, judging whether aggregation defects exist in the first scanning result or not; if yes, the wet process is not healthy, and if not, the wet process is healthy. According to the method and the device, the presence or absence of the sulfur element residue is judged by judging the presence or absence of the aggregated defect on the front surface of the wafer, so that the aim of detecting whether the wet process is healthy or not is fulfilled, the unhealthy wet process can be optimized, and the performance and the reliability of the device are improved.

The invention relates to a method for evaluating the influence of hydrogen on stress corrosion fracture of pipeline steel in an acid environment, which comprises the following steps: (1) respectively carrying out slow strain rate tensile tests in the acid environment and a nitrogen environment, and determining the damage degree of the acid environment on the mechanical property of a pipeline steel sample; (2) carrying out fast and slow scanning anodic polarization curve test, hydrogen permeation curve test and hydrogen filling-slow stretching test on the pipeline steel sample, and determining the damage degree of hydrogen separated out by cathodic reaction on the mechanical property of the pipeline steel sample; and (3) determining the influence degree and contribution rate proportion of hydrogen to the stress corrosion fracture of the pipeline steel in the acid environment. According to the method, the stress corrosion performance of the sulfur-resistant pipeline steel can be accurately and quickly evaluated, the proportion and contribution rate of hydrogen-induced stress corrosion sensitivity in the stress corrosion sensitivity of the pipeline steel in the acid environment are analyzed, and the influence degree of hydrogen on stress corrosion fracture of the pipeline steel in the acid environment is quantitatively represented.

The embodiment of the present application provides a kind of sulfur distribution determination method and device, it is related to sulfur balance calculation technical field, the method comprises: for any one production equipment, according to the initial production parameter of production equipment, the sulfur balance result corresponding to production equipment is determined, and the production parameter of production equipment is adjusted according to sulfur balance result, until the sulfur balance result of production equipment is sulfur balance, and the target production parameter of production equipment is determined;When the sulfur balance result of multiple production equipment is sulfur balance respectively, according to the target production parameter of multiple production equipment, the sulfur distribution result in multiple production equipment is determined.The method determines sulfur balance result by the initial production parameter of production equipment, if sulfur balance is not reached, the production parameter of production equipment is adjusted, until all production equipment realizes sulfur balance, target production parameter is determined, and sulfur distribution result is determined based on target production parameter, improve the accuracy of sulfur distribution result.

The present invention relates to a steel for pipelines and a method for its production, wherein the steel for pipelines comprises, in addition to iron and unavoidable impurities, the following chemical elements in mass percent: C: 0.015-0.040%, Si: 0.10-0.30%, Mn: 1.18-1.45%, P < 0.008%, S < 0.0010%, Cu: 0.05-0.35%, Ni: 0.05-0.30%, Cr: 0.15-0.30%, Mo: 0.02-0.09%, Nb: 0.025-0.055%, Ti: 0.005-0.020%, Ca: 0.0010-0.0040%, Alt: 0.010-0.040%, B < 0.0004 %, 0 < O ≤ 0.0026%, 0 < N ≤ 0.0050%, 0 < H ≤ 0.0002%, 0 < Sn ≤ 0.0050%, 0 < Sb ≤ 0.0025%, 0 < Bi ≤ 0.0030%, 0 < Pb ≤ 0.0050%, 0 < As ≤ 0.0030% and satisfies: Nb + Ti ≤ 0.07%; Ca / S ≥ 2; Cu + Ni + Cr + Mo ≤ 0.80%; 0 < N + O + H ≤ 0.0070%; 0.7 ≤ (Nb + 27.5 * Ti) / (5C + 27 * N) ≤ 5.0; a coefficient Ks ≤ 0.23 describing hydrogen-induced crack susceptibility, where Ks = 8.0C + 24S - Alt - 2.3Nb + 2.8Ti + 117B + 0.34Ni - 0.30Mo + 24.5N - 0.19.The resulting steel for pipelines can achieve strength classes X60 / X65 and exhibits good cold toughness as well as excellent resistance to HIC and SSC.

The present disclosure relates to a conveyance device and an image forming apparatus. The conveyance device includes: a conveyance member that conveys a spread medium on which pressure-responsive particles are spread, the pressure-responsive particles containing at least a binding resin and having pressure phase transition properties, and a content of sulfur element, measured by fluorescent X-ray measurement, is set to a range of 0.1 mass% or more and 0.5 mass% or less with respect to the entire pressure-responsive particles; and a removal member that removes the pressure-responsive particles remaining on the conveyance member by bringing the pressure-responsive particles into contact with the conveyance member.

The invention discloses a method for detecting elements in molten iron. The method comprises the following steps: S1, sampling and preparing a sample; and S2, detecting by using spark discharge atomic emission spectrometry, wherein the parameter setting comprises argon flushing time of 2-7 seconds, pre-combustion time of 8-12 seconds and exposure time of 9-13 seconds. By means of the method, rapid analysis of ultralow sulfur with the mass fraction smaller than 0.0050% in the molten iron and simultaneous analysis of elements such as carbon, silicon, manganese, phosphorus, nickel, chromium, copper, arsenic, tin, vanadium and titanium can be achieved, and the method has wide application prospects in the iron smelting industry.

The present invention provides a hot-stamped part including a base steel sheet containing 0.19 to 0.25% by weight of carbon (C), 0.1 to 0.6% by weight of silicon (Si), 0.8 to 1.6% by weight of manganese (Mn), 0.03% by weight or less of phosphorus (P), 0.015% by weight or less of sulfur (S), 0.1 to 0.6% by weight of chromium (Cr), 0.001 to 0.005% by weight of boron (B), 0.1% by weight or less of an additive, the remainder of iron (Fe), and other inevitable impurities, wherein the number of indentation dynamic strain aging in the indentation strain rate observed with respect to an indentation depth of 200 to 600 nm during nanoindentation testing is 26 to 40.

The utility model belongs to the technical field of synthesizing devices, and particularly relates to a synthesizing device of sulfuryl fluoride. The sulfuryl fluoride synthesizer comprises a reaction kettle (1), a condenser (2) and a venturi reactor (3), the reaction kettle (1) is connected with the condenser (2), two pipelines are arranged at the top of the reaction kettle (1), one pipeline is connected with the bottom of the venturi reactor (3), the other pipeline is connected with the side face of the venturi reactor (3), and the venturi reactor (3) is connected with the condenser (2). And a pipeline at the bottom of the reaction kettle (1) is connected with the top of the Venturi reactor (3). The utility model provides a sulfuryl fluoride synthesizer, which is suitable for liquid phase reaction, further improves the conversion rate of reaction, improves the purity and yield of products, and is small in toxic and side effects, low in risk and environment-friendly.

The application belongs to the field of sensing detection, and relates to a method for rapidly detecting sulfur ions in a double channel, which uses tin telluride nanometer enzyme as a double channel colorimetric probe, detects sulfur ions through two channels, one channel is a specific brown change caused by the binding energy between tin ions and sulfur ions, and is used for detecting sulfur ions with a concentration of greater than or equal to 100 muM; the other channel is a TMB colorimetric method for detecting sulfur ions with a concentration of less than 100 muM; it is found for the first time that the double channel colorimetric probe tin telluride nanometer enzyme can be used for detecting sulfur ions, has high selectivity for sulfur ions, has super-high sensitivity, and is not easily disturbed by other ions; specific brown changes caused by the binding between tin ions and sulfur ions can realize the visualization of sulfur ions in a solution and the rapid, accurate and wide-range concentration determination of photoelectrochemistry; therefore, the method provides a new idea for a 'one platform and multiple channels' detection method of chemical and biological analysis.

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.

Catalyst comprising nickel, copper and sulfur, between 10% and 50% by weight of nickel element relative to the total weight of the catalyst, between 0.15% and 0.45% by weight of copper element relative to the total weight of the catalyst, and between 0.1% and 2% by weight of sulfur element relative to the total weight of the catalyst and an alumina support.

The application discloses a method for recovering tin from silver separation residue by using sulfur concentrate, and comprises the following steps: S1, uniformly mixing copper anode slime silver separation residue, an additive and sulfur concentrate to form spherical materials; S2, roasting the spherical materials under a protective atmosphere at a temperature of 300-800 DEG C to generate soluble sulfur-tin compounds, and obtaining roasting residue; S3, grinding the roasting residue into roasting residue powder, mixing the roasting residue powder with alkali metal salt water to carry out tin leaching reaction in an alkaline environment, and obtaining tin leaching liquid; and S4, mixing the tin leaching liquid, an oxidizing agent and a calcium-containing reagent to carry out tin precipitation reaction, filtering and drying, and obtaining tin concentrate. The application has the advantages of low cost.

The present invention provides a double metal layered hydroxide represented by the formula [M(II) 1‑x M(III) x (OH)2] x+ (A n‑ ) x / n ·mH2O, wherein M(II) contains a divalent cation selected from at least one of Mg, Zn, Ca, Ni, Co, Cu, Fe, Mn, and Sr, M(III) contains a trivalent cation selected from at least one of Al, Fe, Cr, Co, In, Ga, and V, A n‑ contains an anion selected from at least one of CO3 2‑ , OH ‑ , F ‑ , Cl ‑ , SO4 2‑ , NO3 ‑ , PO4 3‑ , B(OH) ‑ , VO4 3‑ , MnO4 ‑ , ClO4 ‑ , a carboxylate, a sulfonate, a sulfinic acid, and a thiocarboxylate, x is 0 < x < 1, n is the valence of A, and m is a number of 0 or more, and the double metal layered hydroxide has an average particle diameter D50 of 0.3 to 1.0 μm, a BET specific surface area of 8 to 25 m 2 / g, and a crystallite size of a D003 plane of 340 to 400 angstroms.

A solid electrolyte according to one aspect of the present invention contains the element lithium, the element phosphorus, an element M, the element sulfur, and an element X, wherein the element M is at least one selection from the group consisting of the element silicon, the element germanium, and the element tin, and the element X is at least one selection from the group consisting of the element bromine and the element iodine. In an X-ray diffraction diagram of the solid electrolyte obtained using CuKα radiation, a diffraction peak A is present in the range of diffraction angle 2θ = 20.1° ± 0.3°, a diffraction peak B is present in the range of diffraction angle 2θ = 29.4° ± 0.3°, and a diffraction peak C is present in the range of diffraction angle 2θ = 33.3° ± 0.3°. The ratio IC / IB in the X-ray diffraction diagram of the intensity IC of the diffraction peak C to the intensity IB of the diffraction peak B is at least 0.15. The X-ray diffraction diagram either does not have a diffraction peak in the range of diffraction angle 2θ = 24.9° ± 0.3° or has a diffraction peak D in the range of diffraction angle 2θ = 24.9° ± 0.3° with the ratio ID / IB of the intensity ID of the diffraction peak D to the intensity IB of the diffraction peak B being not more than 0.05.

A hot rolled steel having a composition including comprising of the following elements 0.01%≤Carbon≤0.1%, 0.2%≤Manganese≤2%, 0.2%≤Silicon≤1.5%, 0.01%≤Aluminum≤2%, 0.1%≤Tin≤1%, 0.1%≤Copper≤0.5%, 0.001%≤Niobium≤0.1%, 0.002%≤Phosphorus≤0.02%, 0%≤Sulfur≤0.005%, 0%≤Nitrogen≤0.01%, with 0.3%≤Sn+Cu≤1.2% and can contain one or more of the following optional elements 0%≤Titanium≤0.1%, 0%≤Vanadium≤0.1%, 0%≤Chromium≤1%, 0%≤Molybdenum≤0.5%, 0%≤Calcium≤0.01%, 0%≤Boron≤0.01%, 0%≤Magnesium≤0.05%, 0%≤Calcium≤0.01%, 0%≤Cerium≤0.1%, 0%≤Boron≤0.05%, 0%≤ Nickel≤0.01%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet including in area fraction, 75% to 95% Ferrite, 1% to 15% Pearlite and optionally Bainite is between 0% and 25% wherein the average grain size of all the microstructural constituent is less than 15 microns.

The invention relates to the technical field of physical and chemical detection, in particular to a method for detecting the content of carbon in ferrotitanium through an infrared carbon and sulfur instrument. The method mainly comprises the following steps: 1) crucible pretreatment: putting a crucible in a muffle furnace, preserving heat at 800-1400 DEG C for 1-3 hours, and then putting the crucible in a dryer for storage for no more than 24 hours; (2) pretreating the ferrotitanium sample, namely crushing the ferrotitanium sample to 80-120 meshes by using grinding equipment; and 3) detection by an infrared carbon-sulfur analyzer: adding part of the fluxing agent into the crucible pretreated in the step 1), putting a to-be-detected sample, uniformly covering the to-be-detected sample with the remaining fluxing agent, and putting the to-be-detected sample on the infrared carbon-sulfur analyzer for analysis. According to the detection method, the carbon content in ferrotitanium can be rapidly and accurately measured, the analysis result is stable and reliable, the labor intensity of post personnel is relieved, and the working efficiency is improved; according to the method, the ferrotitanium sample is crushed to 80-120 meshes, so that the particles are uniform, and the determination result is ensured.

A high-performance steel rod according to an embodiment of the present invention comprises 0.03 to 0.12 wt% of carbon (C), 0.50 wt% or less of silicon (Si), 1.3 to 2.0 wt% of manganese (Mn), 0.02 wt% or less of phosphorus (P), 0.02 wt% or less of sulfur (S), 0.002 to 0.50 wt% of chromium (Cr), 0.5 wt% or less of copper (Cu), 0.35 to 0.65 wt% of nickel (Ni), 0.002 to 0.10 wt% of molybdenum (Mo), and the balance of steel. The present invention relates to a hot-rolled steel sheet having a yield strength (YS) at room temperature of 500 MPa or more, the hot-rolled steel sheet comprising 0.005 wt% to 0.04 wt% of aluminum (Al), 0.005 wt% to 0.045 wt% of vanadium (V), 0.004 wt% to 0.045 wt% of niobium (Nb), 0.001 wt% to 0.015 wt% of titanium (Ti), 0.015 wt% or less of nitrogen (N), and a remainder of iron (Fe) and unavoidable impurities, and the hot-rolled steel sheet having a yield strength (YS) at room temperature of 500 MPa or more.

The invention relates to a refractory austenitic alloy, intended for use at a service temperature greater than or equal to 1100°C, comprising all of the following compounds in mass percentages: chromium between 25.0% and 32.0%, nickel between 50.0% and 61.0%, aluminum between 1.0% and 6.0%, niobium between 0.15% and 1.50%, carbon between 0.05% and 0.60%, one or more reactive element(s) at a total content of 0.060% or less, silicon at 0.30% or less, manganese at 0.30% or less, titanium at 0.40% or less, nitrogen at 0.20% or less, vanadium at 1.0% or less, iron between 4.0% and 18.0%, to balance the alloy compounds, zirconium, tungsten and sulfur being absent from the alloy, or in the form of impurities respectively at less than 0.030%, less than 0.010% and less than 0.0060%, the alloy also meeting two criteria relating the mass percentages (xCr, xAl, xC, xSi, xMn, xTi, xNb, xN, xV, xS,xNi) of all or part of the compounds of said alloy: - a first criterion defined by: with and ;- and a second criterion defined by: . No Figure,

Catalyst comprising nickel, copper and sulfur, between 10% and 50% by weight of nickel element relative to the total weight of the catalyst, between 0.15% and 0.45% by weight of copper element relative to the total weight of the catalyst, and between 0.1 and 2% by weight of sulfur element relative to the total weight of the catalyst, and also comprising an alumina support.

The invention discloses a quantitative analysis method for sulfur-containing ions in a thiosulfate leaching system. The quantitative analysis method for the sulfur-containing ions in the thiosulfate leaching system comprises the following steps: obtaining a plurality of isopyknic solutions to be detected; carrying out pretreatment and iodine titration on each part of the to-be-detected solution to obtain the titration volume of each part of the to-be-detected solution; and calculating the concentration of each sulfur-containing ion in the to-be-detected liquid according to the titration volume of each part of the to-be-detected liquid. The quantitative analysis method for the sulfur-containing ions in the thiosulfate leaching system provided by the invention is simple and convenient to operate, has wide applicability and can be used in laboratories and industrial sites; the method is accurate in determination and small in error (+ / -0.2%).