94 results about "Solid oxygen" patented technology

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 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.

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 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.