94 results about "Solid oxygen" patented technology

In solid oxygen ion conducting electrolytes for electrochemical cells based on magnesium oxide and calcium oxide, obtained by the addition of metal fluorides selected from elements in the groups of alkali metals and earth alkali metals to the host oxides of magnesium and calcium, conductivity values are obtained, which are comparable with those of stabilized zirconia, but the magnesium oxide and calcium oxide based oxygen ion conducting electrolytes have a superior thermodynamic stability and, therefore, can operate at much lower oxygen concentrations in comparison with other oxygen ion conducting electrolytes and without becoming noticeably electronically conductive.

The invention relates to a method for directly preparing titanium and titanium alloy from titaniferous waste residues, and belongs to the technical field of electrochemical metallurgy. The method is characterized in that the titaniferous waste residues are made into an electrolysis electrode, and the electrolysis is performed in a crucible of an electrolytic cell by a solid oxygen permeable membrane in a specific molten salt electrolyte. The method comprises the following process steps: the titaniferous residues is processed by ball milling, then pressed and formed in a mould at 3-6MP, dried in the air, and then sinteredat the temperature of 1000-1100 DEG C for 2h to be made into an electrolysis cathode; molten salt is separated from an anode by an oxygen permeable membrane tube which only conducts oxyanion, the anode is liquid copper or copper alloy with saturated carbon powder, calcium chloride is taken as the molten salt electrolyte, the cathode and the anode are vertically arranged, the electrolytic temperature is 1000-1100 DEG C, the electrolytic voltage is 3.0-3.5V, the electrolysis time is 2-6h, and the cathodic products obtained by the electrolysis are metallic titanium and the titanium alloy. The method has the advantages of simple process, high electrolysis speed and high current efficiency.

The invention discloses a double-smelting dephosphorization process for high-phosphorus molten iron. The double-smelting dephosphorization process comprises a pre-dephosphorization process and a converter smelting process. The pre-dephosphorization process comprises the steps that pre-dephosphorization is performed by the adoption of a pre-dephosphorization furnace; a desiliconization slagging material is added to the high-phosphorus molten iron, and oxygen injection is performed for desiliconization slagging; the desiliconization slagging material is put into the furnace after desiliconization slagging, a solid oxygen agent is put into the furnace after dephosphorization slagging, meanwhile dephosphorization agent injection is performed, and inert gas bottom-blowing is performed so that mixing can be strengthened; and the pre-dephosphorized molten iron passes iron-slag separation equipment and then enters the converter smelting process. The dephosphorization process has the beneficialeffects of being stable, low in temperature, large in treatment capacity and the like, and the problem about high-phosphorus ultrahigh-phosphorus molten iron dephosphorization is solved thoroughly. The double-smelting dephosphorization process is suitable for high-phosphorus molten iron and ultrahigh-phosphorus molten iron, and the dephosphorization rate of pre-dephosphorization can reach 64-71%.According to the process, the molten iron pre-dephosphorization furnace and converter double-smelting are adopted, the high-phosphorus ultrahigh-phosphorus molten iron smelting operation can be achieved, the converter steelmaking load is lowered greatly, steelmaking is more efficient, and the smoothness and stability of the production procedures are guaranteed.

The invention relates to a method for directly preparing titanium alloy by titanium concentrate powder, and belongs to the technical field of the preparation process for metal titanium alloys. The method mainly comprises the following steps: taking Gossampinus titanium concentrate powder as a raw material to obtain a fine material of titanium concentrate through ball milling and screening; then performing tabletting and sintering; winding round tablets on a molybdenum rod by using a fine molybdenum wire to prepare a cathode, or sintering the ore concentrate powder to form circular sheets, putting the circular sheets into a small stainless steel crucible directly, immersing the integral small stainless steel crucible into molten salt in an electrolytic cell, leading the small stainless steel crucible out by using the molybdenum wire as the cathode; taking copper solution of saturated carbon dust in a solid oxygen-permeable membrane tube as an anode; taking a corundum crucible as a reaction vessel, and taking CaCl2 as a molten salt electrolyte; taking high-purity argon as protective gas; performing electrolysis at a temperature of 1,100 DEG C under the constant voltage of between 3.5 and 4.0 V for 2 to 6 hours, taking the electrolyzed cathode out, and washing and drying the electrolyzed cathode to prepare the titanium alloy. The method has the characteristics of short flow, high efficiency, no pollution, low cost and the like.

The invention relates to the technical field of preparation of solid oxygen-bearing bleaching agent, in particular to a solid hydrogen peroxide preparation technology. The preparation technology comprises the step of kneading sodium sulfate, hydrogen peroxide and salt in a kneader at a certain proportion to obtain the finished product. According to the invention, the ordinary 30% hydrogen peroxide can serve as a basic material, the problems that the preparation cost is higher, the mother liquor is not fully utilized and waste liquid is discharged in the prior art are solved, the yield of hydrogen peroxide in the obtained finished product is more than 80 percent, the process period is shorter, the cost is lower, no three-waste emission exists, and the solid hydrogen peroxide preparation technology is suitable for large-scale popularization and application.

The invention discloses a high-capacity all solid oxygen generator which comprises a cylindrical shell and an upper cover, wherein the upper cover is installed on the cylindrical shell and is provided with an ignition starting assembly which is connected with an oxygen generating medicine block by virtue of a lead, the oxygen generating medicine block is arranged inside the cylindrical shell, and a filter assembly is arranged between the ignition starting assembly and the oxygen generating medicine block. The oxygen generating medicine block is prepared from the following components in parts by weight: 3 parts of ignition block, 23 parts of first oxygen generating medicine block, 25 parts of second oxygen generating medicine block, 25 parts of third oxygen generating medicine block and 25 parts of fourth oxygen generating medicine block. The generator disclosed by the invention has the beneficial effects that the problem that harmful impure gases are generated by high-temperature side reactions is solved, and the generator can provide sufficient and pure oxygen for personnel in a tight space in an emergency.

The invention relates to a method for direct preparation of AB5 type hydrogen storage alloys through metal oxide mixture, belonging to the solid oxygen permeable membrane electrolysis method alloy preparation technology technical field. The method mainly utilizes the solid oxygen permeable membrane technology and an electrochemical method to directly prepare the AB5 type hydrogen storage alloys through the oxide mixture of target alloys. The metal oxide mixture which forms the elemental constituent of the hydrogen storage alloys is pressed into a wafer which is used as a cathode, and graphite is used as an anode; the metal oxide mixture wafer is arranged inside a solid oxygen permeable membrane pipe; the metal oxide mixture wafer and the graphite which are used as the cathode and the anode are arranged inside a graphite crucible electrolytic cell which is stored with copper liquid, and then electrolysis is performed after galvanization and heating; the electrolytic voltage is 0 to 4.5 volts and the electrolytic current is 0 to 6.0 amperes; finally the AB5 type hydrogen storage alloys are obtained. The compositions of raw materials used by the AB5 type hydrogen storage alloys are as follows: La2O3 of 18.1+-0.46 weight percent, CeO2 of 8.54+-0.28 weight percent, Pr2O3 of 0.73+-0.18 weight percent , Nd2O3 of 2.46+-0.18 weight percent, MnO2 of 6.42+-0.24 weight percent, Al2O3 of 1.77+-0.30 weight percent , Co2O3 of 11.17+- 0.22 weight percent and residual NiO.

In one aspect, the present invention is directed to liquid anodes and fuels for production of metals from their oxides. In one aspect, the invention relates apparatuses for producing a metal from a metal oxide comprising a cathode in electrical contact with an electrolyte, a liquid metal anode separated from the cathode and the electrolyte by a solid oxygen ion conducting membrane, a fuel inlet, and a power supply for establishing a potential between the cathode and the anode. In another aspect, the invention relates to methods for production of metals from their oxides comprising providing a cathode in electrical contact with a molten electrolyte, providing a liquid metal anode separated from the cathode and the molten electrolyte by a solid oxygen ion conducting membrane, providing a fuel inlet, delivering a gaseous fuel comprising hydrogen to the liquid metal anode via the fuel inlet, and establishing a potential between the cathode and the anode.

A method of hot metal dephosphorization treatment, comprising adding a dephosphorization refining agent composed mainly of CaO and reducing the added dephosphorization refining agent composed mainly of CaO to slags to thereby accomplish dephosphorization of the hot metal, wherein a gaseous oxygen source is fed from one supply system to a surface of hot metal bath and a solid oxygen source is fed from another supply system to a surface of hot metal bath in the vicinity of the site where the gaseous oxygen source is fed by the use of carrier gas. Thus, without the use of any medium solvent containing fluorine, there can be accomplished dephosphorization treatment with dephosphorization efficiency and iron yield equal to or higher than those of the prior art.

The invention belongs to the field of microorganism fermenting, which aims at providing a method for increasing dissolved oxygen in gamma-polyglutamic acid fermenting liquid with universality. The method adopts the technical scheme that the collection number of bacillus amyloliquefaciens JX-6 is CGMCC No.13715, and comprises the following steps of inoculating the bacteria strain into a sterilized oblique activation culture medium, and culturing, so as to obtain activated bacterial strain; inoculating the activated bacteria strain into a sterilized and cooled seed culture medium, and culturing, so as to obtain a seed liquid; inoculating the seed liquid into a fermenting culture medium, adding solid oxygen in the fermenting process, and culturing, so as to obtain the fermenting liquid. The method has the advantages that the universality is strong, the operation is simple, the cost is low, the secondary pollution is avoided, the resistance requirement on the bacteria strain is avoided, the method is suitable for large-scale production, and the application prospect is good.

The invention relates to a device and method for producing oxygen, in particular to a device and method for rapidly producing oxygen, aiming at the problems of the existing solid oxygen generator, such as complicated structure, too many used reagents and high cost, and the problem of an automatic oxygen generator that hydrogen peroxide is easily decomposed, hard to control and harmful to human bodies. The device for rapidly producing the oxygen comprises a container, an oxygen discharging pipe, a triggering pipe, a molecular sieve and oxygen producing reactants, wherein the oxygen producing reactants are put in the container; the molecular sieve is arranged at the opening of the container and forms a reacting cavity together with the container; the lower end of the triggering pipe is inserted into the oxygen producing reactants, and the upper end of the triggering pipe penetrates through the molecular sieve and is exposed out of the reacting cavity; the lower end of the oxygen discharging pipe penetrates through the molecular sieve to be inserted into the reacting cavity and is arranged above the oxygen producing reactants; and the oxygen producing reactants include sodium superoxide, white alum and silicon dioxide. The device and method are used for producing the oxygen.

The invention discloses an YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor based on a NiO sensitive electrode and a preparation method of the YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor. YSZ solid electrolyte is prepared by adopting a tape casting technology, the NiO sensitive electrode and a Pt reference electrode are formed in a printing manner by adopting a thick-film screen printing technology, and an electrode lead is led out. A YSZ solid oxygen ion conductor material is used as the solid electrolyte of the HCs sensor, the flower-shaped nano-topography NiO is used as the sensitive electrode, no liquid phase component is used, the safety is high, the sensitivity is high, the selectivity is good, and the safety is good; moreover, the sensor is simple in structure, small in size and simple in preparation process. When the HCs sensor works, no external working voltage is needed, and the detection range of the HCs concentration is 0 to 500ppm.

A solid material is presented for the partial oxidation of natural gas. The solid material includes a solid oxygen carrying agent and a hydrocarbon activation agent. The material precludes the need for gaseous oxygen for the partial oxidation and provides better control over the reaction.

The invention relates to a complex RH decarburization method, which comprises the following steps: 1) decarburizing RH decarburization oxygen supply by adopting a mode of combining solid oxygen with blown high-pressure oxygen; 2) when the vacuum interior pressure reaches 20-25kPa, adding 0.1-3.0kg/tonnage steel containing Fe2O3 solid spheres; 3) controlling the vacuum pressure at 10-15kPa, adding 0.1-3.0kg/tonnage steel containing Fe2O3 solid spheres; 4) automatically vacuumizing; 5) reducing the oxygen blowing by a top lance; 6) promoting the gas flow at the oxygen blowing earlier stage; 7) stopping oxygen blowing when carbon in the steel reaches 100ppm below; 8) after the circulation is finished, breaking and carrying out. Compared with the prior art, the complex RH decarburization method has the beneficial effects that the fast, stable and safety decarburization is realized, and the method can be used for producing low-carbon special steel in which the content of molten steel carbon is distributed in 1000-2000ppm, and of finished carbon is distributed below 350ppm before RH decarburization.

The invention discloses a starting mix of a solid oxygen generator, belonging to the technical field of explosives. The starting mix of the invention is mainly suitable for quickly igniting an oxygen generating grain to generate oxygen when the solid oxygen generator is impacted and ignited, and has the main technical characteristic of comprising the following components in percentage by weight: 40-70 of ferric oxide, 5-25 of zirconium powder, 10-30 of zirconium hydride, 1-15 of kieselguhr and 1-10 of shellac varnish, wherein the zirconium powder is substituted for magnesium powder, and the ferric oxide is substituted for barium nitrate and barium peroxide as oxidizers. The starting mix has the characteristics of moisture protection, water resistance, oxidation protection and the like, has good ignition property and safety, and can meet the requirement of long-term storage of products.

The invention provides an oxygen candle grain and a preparation method thereof. The oxygen candle grain comprises an inflammable drug layer formed by an inflammable drug, a grain inner core formed byan inner core drug as well as a grain outer ring formed by an outer ring drug, wherein the inflammable drug layer is located at the top end of the oxygen candle grain; the grain outer ring is of a cylindrical structure; the grain inner core is arranged in the cylindrical structure of the grain outer ring; both the grain inner core and the grain outer ring are located below the inflammable drug layer. The inner core drug contains a small quantity of metal powder fuel; the outer ring drug comprises sodium chlorate and a catalyst in a proper proportion as main components and contains no metal fuel. By means of the design, the outer ring drug is catalytically decomposed by heat transmitted by the inner core drug, so that heat emission of the oxygen candle is reduced greatly. The oxygen candlegrain is applicable to various specifications of solid oxygen generators and applies to the fields of marine vessels, aerospace, mines, self-rescue from various disasters and the like. By means of oxygen candle grain, the heat production quantity of the oxygen candle is small, oxygen evolution is stable, and the overall structure of the oxygen candle is stable.

The invention discloses an electrochemical deoxidization method for refining a titanium and titanium alloy solution, belonging to the technical field of metallurgical refining processes. The electrochemical deoxidization method is characterized in that an yttrium oxide crucible is used as a reaction vessel, a graphite rod is used as a cathode, and a carbon saturated copper solution in an yttrium oxide stabilized zirconium oxide pipe is used an anode, wherein the self-made yttrium oxide stabilized zirconium oxide pipe is used as a solid oxygen permeable membrane. The self-made yttrium oxide crucible is arranged in a graphite crucible with a cover, insulating corundum sleeves are added between the cover of the graphite crucible and the cathode and between the cover of the graphite crucible and the anode, and high-purity industrial argon gas is used as protective gas. A constant current is applied between the cathode and the anode through an external power supply, and O<2-> ions migrate with the electrolysis in the solution at high temperature, thus achieving the purpose of deoxidizing and purifying the metal solution.

The invention provides a method for producing metallic titanium, particularly a method for preparing sponge metallic titanium through directly electrolyzing and reducing TiO2 by using a SOM (Solid Oxygen-permeation Membrane). The method for producing the sponge metallic titanium solves the problems of carbon pollution, low current efficiency and strict requirement on raw materials in an FFC (Flexible Flat Cable) method. The method adopted by the invention comprises the steps of exerting 3.2V voltage in an MgF2-CaF2 system of 1150 DEG C, and displaying the generation of the sponge metallic titanium through SEM (Scanning Electron Microscope) and XRD (X-Ray Diffraction) analysis after the electrolysis is carried out for two hours.

The invention provides a novel technology for producing medium/low carbon manganese iron by an air three-times blowing method. The novel technology comprises the following steps: blowing primary air into a high carbon manganese iron flux, which is different from blowing oxygen by which high temperature evaporation manganese is generated and blowing components are damaged, and completely decarburizing through powerful dynamics stirring; blowing secondary air on a high carbon manganese iron flux liquid level so as to burn carbon monoxide generated by primary-air blowing for increasing heat, and adding more manganese ores so as to increase manganese oxide solid oxygen which facilitates decarburization and the recovery of manganese metal; blowing tertiary air and fuel gas into a furnace at the same time so as to provide external heat for increasing the furnace temperature, conditionally adding more manganese ores in an oxidation period and more reducing agent in a reduction period, conditionally adding a refinement period and meanwhile adding the manganese ores and the reducing agent so as to ensure the blowing technological operation and adjust product components for ensuring the quality.