30results about How to "Efficient deoxidation" patented technology

The invention relates to a waste electromagnetic wire copper refining agent and a preparation method and application thereof. The refining agent is preferably composed of, by mass, 1.0-5.0% of V, 1.0-5.0% of Sr, 0.5-2.5% of B, 5.5-7.5% of Mg, 5-10% of Y, 5-10% of Ce and the balance Cu. According to the preparation method of the refining agent, Cu-B-Y-Ce-Mg intermediate alloy and Cu-Sr intermediate alloy are crushed into fragments with the particle size being smaller than 10 mm, and the fragments and vanadium with the particle size being smaller than 10 mm are mixed evenly according to a set proportion and then wrapped with a high-purity oxygen-free copper sheet to obtain the refining agent. The refining agent can be used for refining oxygen-free copper from waste copper electromagnetic wires, and the adding amount is 0.1-0.65 percent of the melt mass. The refining agent of the design has the good effects on deoxidation, desulfurization, dealumination, deferrization, denickelefication and the like, and does not pollute copper liquid secondarily. The refining agent is reasonable in component design and simple in preparation process and can achieve large-scale industrial application conveniently.

The composite molten steel refining agent consists of deoxidizing alloy and refining agent base material in the weight ratio of 0.75-3 to 1. The deoxidizing alloy consists of Ca 8-18%, Si 35-45%, Ba 7- 17%, Al 10-25% and C 15-35%; and the refining agent base material consists of CaO 50-65%, Al2O3 30-45%, SiO 6-22% and MgO 5-10%. The composite molten steel refining agent of the present invention may be used as the pre-deoxidizing agent or cinder pushing modifier, can avoid the formation of SiO2, AL2O3 and other high smelting point solid deoxidizing products, and is favorable to the formation of low smelting point composite compounds. The present invention has high deoxidizing effect, low deoxidizing cost, and no fluorine content resulting in environment friendship.

The invention belongs to the field of household appliances, and particularly relates to an air purifying fan capable of generating ionic wind for air purification. The air purifying fan comprises a fan shell, a rotating shaft, an air purifying device and fan blades. The rotating shaft is inserted into the fan shell, the fan blades are fixed to one end of the rotating shaft, and the air purifying device is arranged on the periphery of the rotating shaft in a matched mode. The air purifying device comprises needle electrodes, matched electrode sets and ironic wind releasing openings, wherein the matched electrode sets are symmetrically distributed around the central axis of the air purifying device, the needle electrodes are arranged at the sides opposite to the matched electrode sets, and the ionic wind releasing openings are distributed on the left side face and the peripheral side face of the air purifying device. The air purifying device of the structure generates ionic wind through corona discharge, ionic wind containing high-concentration ions can be sent out through the matched electrode sets, and therefore efficient deoxygenation, sterilization and disinfection are achieved.

the invention discloses a passive deoxidant of LF furnace refining spraying, which consists of 100-20% passive carbide powder and 0-80% passive lime powder, wherein the passive carbide powder or passive lime powder is blended by 1-15% carbide powder or lime powder and hydroxyl capping methyl-vinyl silicon oil according to proportion.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100 and modified titania nanoparticle 58-100 to obtain a mixture; (2) calcining; (3) kneading the calcined mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (4) aging and drying; and (5) calcining. The second calcining temperature is lower than the first calcining temperature. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 31 mL/g, deoxygenation depth lower than 0.01 ppm, low reduction temperature, and wide applicability in industrial production.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100, titania nanoparticle 58-100 and binder 1.5-25 to obtain a mixture; (2) kneading the mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (3) aging and drying; and (4) calcining. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 24.8 mL/g, high mechanical crushing strength up to 89 N/cm, deoxygenation depth smaller than 0.01 ppm, low reduction temperature, and wide applicability in industrial production.

The invention discloses an electroplating wastewater biochemical treatment device. The biochemical treatment device comprises a raw water bucket and biochemical pools, and the raw water bucket is connected with the biochemical pools through a lifting pump; the number of the biochemical pools is not less than 4; biofilm culturing biochemistry is conducted in the biochemical pools through biochemical filler, the biochemical filler is composed of a nylon net and chemical fiber cotton, the chemical fiber cotton is fixed to the nylon net through nylon net clamps, and the use amount of the chemicalfiber cotton is 150-500g/m<2>; in the same biochemical pool, the distance between every two adjacent nylon net clamps is 15-25mm, and the distance between every two adjacent mycoderm is 100-200mm; themounting direction of the mycoderm is parallel to the water inlet direction in the biochemical pools, the distance between the top of the mycoderm and the water surface is 100-150mm, and the distancebetween the bottom of the mycoderm and an aeration head of each biochemical pool is 150-100mm; and the distances from the mycoderm to the four side surfaces of the biochemical pools are respectively100-150mm. The invention also discloses application of the biochemical treatment device.