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30results about How to "High reduction potential" patented technology

Method for preparing anti-microbial, mildew-resistant and corrosion-resistant membrane layer on magnesium metal surface

The invention discloses a method for preparing an anti-microbial, mildew-resistant and corrosion-resistant membrane layer on a magnesium metal surface. Firstly a magnesium metal is pretreated, and then is put in an oxidation fluid. An alternating current with a current density of 0.5-2.5 A / dm<2> is connected. A layer of oxidation functional membrane is formed after the treatment is carried out for 10-40 minutes at the temperature of 15-30 DEG C. Then the magnesium metal is rinsed by deionized water and is sealed t in the pure water. The oxidation membrane layer with the thickness of 3-15[mu]m is obtained on the magnesium metal surface. The oxidation fluid contains the following solute: 40-80g / L NaOH, 50-90g / L Na2SiO3, 40-80g / L Na2B4O7, and 8-16g / L citric acid, and also contains soluble anti-microbial and mildew-resistant functional element salts. The magnesium metal surface after treatment by the method of the invention has a layer of the oxide membrane which takes a magnesia ceramic phase as a matrix. The anti-microbial and mildew-resistant functional elements Ag and Ni are dispersed and distributed in a matrix phase. The membrane layer has the good anti-microbial and mildew-resistant performance and good corrosion resistance, and can be used in many fields such as package and storage of food and clothing, and human body implantation medical instruments.
Owner:SOUTHEAST UNIV

Application of zero-valent iron-loaded biochar in wastewater treatment

The invention belongs to the technical field of environmental protection and industrial emission reduction and provides an application of zero-valent iron-loaded biochar in wastewater treatment. According to the application, zero-valent iron-loaded biochar is added into wastewater containing metal ions, wherein the wastewater is electroplating wastewater or a mixture of the electroplating wastewater and organic wastewater, the reduction potential of the metal ions is higher than that of zero-valent iron, the metal ions are reduced into elementary substances by the nano zero-valent iron, the elementary substances and elementary substance iron on the biochar form a multi-metal composite material, and organic matters are efficiently catalyzed to be degraded; and meanwhile, the electroplatingwastewater and the organic polluted wastewater are mutually diluted, so that the aim of treating wastes with wastes is fulfilled; the zero-valent iron loaded biochar has magnetism, can be convenientlyrecycled by an electromagnet, and still has good treatment capacity after being repeatedly used. The application of the zero-valent iron-loaded biochar in wastewater treatment achieves a good effectin wastewater treatment; and the material has magnetism and is easy to recycle, so that the zero-valent iron-loaded biochar has a good application prospect.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Pre-orientated polyester filament yarn and manufacturing method thereof

The invention discloses pre-orientated polyester filament yarn and a manufacturing method thereof. The manufacturing method comprises the following steps that 1, a fiber-grade PET board is cut into chips, and the PET chips are dried for twice to enable the moisture content of the PET chips to be smaller than or equal to 25 ppm; dried PET chips are fused, hexadecyl trimethyl silver ammonium bromide, 1,1'-sulfo-bis(2-naphthol), 2-hydroxybenzophenone and a nickelous EDTA complex are added after the dried PET chips are completely fused, and after the materials are evenly mixed, filamentation is performed through extrusion forming and cooling is performed; 2, PET yarn obtained in the step 1 is sequentially processed through collecting through a first roller, heating through an upper heating box, twisting through a heater, drawing through a second roller, sizing through a lower heating box, further sizing through a third roller, oiling through an oiling device and forming through a winding roll to obtain the pre-orientated polyester filament yarn, wherein a chemical fiber oiling agent is contained in the oiling device, and the production speed of the pre-orientated polyester filament yarn is controlled at 3300 rad/min. The pre-orientated polyester filament yarn has the better anti-ultraviolet property and the higher breaking strength.
Owner:浙江恒百华化纤有限公司

Silver vanadate/silver carbonate p-n heterojunction composite photocatalyst as well as preparation method and application thereof

The invention discloses a silver vanadate/silver carbonate p-n heterojunction composite photocatalyst as well as a preparation method and application thereof. The silver vanadate/silver carbonate p-nheterojunction composite photocatalyst is prepared by taking silver carbonate as a carrier, and the silver carbonate is coated with silver vanadate. The composite photocatalyst has the advantages of high photo-induced electron-hole separation efficiency, high photocatalytic activity, strong light absorption capability, good stability, corrosion resistance and the like, and is a novel visible lightcatalyst, and the preparation method has the advantages of simple and convenient synthesis method, low raw material cost, low energy consumption, short time consumption, easily-controlled conditionsand the like, and is suitable for popularization and application. The composite photocatalyst disclosed by the invention can be used for degrading antibiotic wastewater and dye wastewater, has the advantages of stable photocatalytic performance, strong corrosion resistance and high pollutant degradation efficiency, and has a very good practical application prospect.
Owner:HUNAN AGRICULTURAL UNIV

Vanadium-titanium magnetite ore coal-based reduction process

The invention discloses a vanadium-titanium magnetite ore coal-based reduction process. The adopted production process includes the steps that vanadium-titanium magnetite concentrate, high- volatile coal, a binder and a focusing agent are subjected to batching, blending and pelletizing according to the ratio being 100:(38-40):(1-3):(1-2); in the process of conducting heating and temperature rise on dried pellets in a rotary hearth furnace, reduction is conducted on vanadium-titanium magnetite ore through H2 generated by coal sufficient pyrolysis and H2 generated by carbon gasification reactionwith H2O as a gasification agent, the fire box temperature is controlled at 1250 DEG C to 1300 DEG C, the calcination time is 50-55 min, the vanadium-titanium magnetite ore can be sufficiently reduced, and after reduction materials are subjected to dry grinding dry separation and electric furnace smelting separation, semi-steel, vanadium-titanium-rich tailings and vanadium-titanium-rich slag canbe obtained. The vanadium-titanium magnetite ore coal-based reduction process has the advantages that vanadium-titanium magnetite ore reduction is sufficient, the product metallization ratio is high,the production energy consumption is low, the single-furnace production capacity is high and essence emission reduction is achieved; and after the vanadium-titanium-rich tailings and the vanadium-titanium-rich slag are subjected to acid leaching, iron, vanadium, titanium and other valuable elements in the vanadium-titanium magnetite ore can be recycled.
Owner:JIUQUAN IRON & STEEL GRP

Polyester pre-oriented filament and its manufacturing method

The invention discloses pre-orientated polyester filament yarn and a manufacturing method thereof. The manufacturing method comprises the following steps that 1, a fiber-grade PET board is cut into chips, and the PET chips are dried for twice to enable the moisture content of the PET chips to be smaller than or equal to 25 ppm; dried PET chips are fused, hexadecyl trimethyl silver ammonium bromide, 1,1'-sulfo-bis(2-naphthol), 2-hydroxybenzophenone and a nickelous EDTA complex are added after the dried PET chips are completely fused, and after the materials are evenly mixed, filamentation is performed through extrusion forming and cooling is performed; 2, PET yarn obtained in the step 1 is sequentially processed through collecting through a first roller, heating through an upper heating box, twisting through a heater, drawing through a second roller, sizing through a lower heating box, further sizing through a third roller, oiling through an oiling device and forming through a winding roll to obtain the pre-orientated polyester filament yarn, wherein a chemical fiber oiling agent is contained in the oiling device, and the production speed of the pre-orientated polyester filament yarn is controlled at 3300 rad / min. The pre-orientated polyester filament yarn has the better anti-ultraviolet property and the higher breaking strength.
Owner:浙江恒百华化纤有限公司
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