61results about How to "Energy saving and environmental protection in the preparation process" patented technology

The invention discloses a preparation method of amphoteric polyacrylamide dispersion liquid. The preparation method comprises the following steps: putting a main functional monomer into a mixed system comprising an amphoteric dispersion stabilizer, a chelating agent, a pH regulator and inorganic salt deionized water solution; initiating a reaction by virtue of an initiating agent; and preparing the amphoteric polyacrylamide dispersion liquid by virtue of a dispersion polymerization method. The dispersion liquid prepared by adopting a novel amphoteric polymer dispersion stabilizer has the characteristics of good stability, high molecular weight, high dissolution rate and the like, and a synthetic process of the dispersion liquid is environment-friendly and pollution-free and is low in energy consumption, and the product is nontoxic and noncorrosive, cannot generate secondary pollution and accords with the development direction of green and environment-friendly chemical assistants. The amphoteric polyacrylamide dispersion liquid has an application prospect in the fields of water treatment, papermaking, printing and dyeing, oil fields, mining, daily chemicals and the like.

The invention discloses a composite positive electrode material for a sodium-ion battery and a preparation method of the composite positive electrode material. An Na<2>Fe<1-x>Ni<x>P<2>O<7> precursor grows in a graphene oxide (GO) solution by a coprecipitation method in situ; and graphene oxide is reduced when Na<2>Fe<1-x>Ni<x>P<2>O<7> nanoparticles are obtained in a calcining manner, thereby obtaining a vegetable sponge-shaped Na<2>Fe<1-x>Ni<x>P<2>O<7>/reduced graphene oxide nanocomposite material. The synthesis method is simple; the conditions are mild; and the yield is high. In the prepared composite material, active materials are dispersed uniformly; and the composite positive electrode material has high specific capacity, high working voltage, good cycling stability and excellent rate capability when used as a sodium-ion positive electrode material.

The invention discloses a Na2Fe2(SO4)3@alumina composite material having a core-shell structure and a preparation method and an application thereof. The material is a composite material having the core-shell structure and prepared by coating the surface of Na2Fe2(SO4)3 particles with alumina. The Na2Fe2(SO4)3 is pyrolytically coated with an organic aluminum salt, the problems that Na2Fe2(SO4)3 is dissolved in water and is difficultly coated by alumina via a traditional hydrolysis method are overcome, the synthesis method is simple, conditions are mild, and the yield is high; the prepared composite material can effectively suppress a 'surface poisoning effect' of the material, and has the advantages of high specific capacity, high work voltage, good cyclic stability and excellent rate performance when applied as a sodium ion battery positive electrode material.

The invention relates to a porous heat-insulation material prepared utilizing iron ore surrounding rock and iron tailings and a preparation method of the porous heat-insulation material. The porous heat-insulation material prepared utilizing the iron ore surrounding rock and iron tailings is characterized by being prepared from the following components in percentage by weight: 30-60% of iron tailing powder, 20-50% of iron ore surrounding rock powder, 0.5-10% of foaming agent, 0-1% of cosolvent and 0.1-9% of foam stabilizer by uniformly mixing, then adding water, mixing and pulping, carrying out microwave calcining and cooling. The preparation method of the porous heat-insulation material prepared utilizing the iron ore surrounding rock and iron tailings has high utilization rates of iron ore surrounding rock and iron tailings; and the prepared porous heat-insulation material has low density and excellent heat-insulation performance.

The invention relates to road delayed-coagulation cement and a preparation method thereof. The road delayed-coagulation cement comprises special cement clinker, limestone waste, modified steel slag powder and phosphorus gypsum. According to the road delayed-coagulation cement, a cement raw material is prepared from carbon-containing shale, the phosphorus gypsum serves as mineralizing agents of clinker calcination, steel slag powder is prepared in a crushing, iron removing and grinding manner, the steel slag powder and the limestone waste serve as cement admixtures, and the phosphorus gypsum serves as a cement delayed coagulant. By the aid of the technical scheme, the prepared road delayed-coagulation cement has the advantages that coagulation time is suitable, early strength is high, laterstrength is rapidly increased, breaking strength is high, abrasion resistance is good, dry shrinkage performance is low and the like. Efficient resource utilization of solid waste such as the carbon-containing shale, the limestone waste, steel slag and the phosphorus gypsum is achieved, and the road delayed-coagulation cement has important economic benefits and social benefits.

The invention discloses Ag-based composite brazing foil and a preparing method thereof, which is used for brazing electric vacuum components. The thickness of the Ag-based composite brazing foil is 0.05-1mm, the Sn content is 19-21%, the Cu content is 21-23%, and the rest is Ag. The preparing method of the Ag-based composite brazing foil comprises the following steps: orderly stacking Ag layers, Cu layers and Sn layers which are the same in size and 0.05-0.5mm in thickness according to the structure mode of Ag/Sn/Cu/Sn/Ag/.../Ag/Sn/Cu/Sn/Ag; making an Ag-Cu-Sn multi-layer composite blank of which the total layer number is 5-30 through pre-compression; then carrying out rolling to make Ag-Cu-Sn foil of which the thickness is 0.05-1mm; and after the following heat treatment, obtaining the Ag-based composite brazing foil. The prepared foil product has great tenacity and ductility, can be made into various sizes of premolding soldering lugs through cold blanking, and has great wetting property and welding property on base materials, such as copper, nickel, high-temperature alloy and kovar alloy.

The invention discloses a method for recycling a waste FCC catalyst. The method comprises the following technical scheme: taking 50 to 70 wt% of the waste FCC catalyst, 25 to 45 wt% of clay and 2 to 5wt% of TiO2 as catalyst materials, mixing the raw materials, drying a mixture, and grinding the mixture; placing the mixture into a disc granulator, spraying 10 to 15% by weight of a transition metalsalt aqueous solution of the catalyst raw material while rotating, rotating a disk grain making machine to form spherical catalyst particles having a particle diameter of 3 to 5 mm; and drying and sintering the material at 1080 to 1200 DEG C for 15 to 30 minutes to prepare an ozone catalyst. A catalytic oxidation tower or a reaction tank is filled with an ozone catalyst according to a filling volume of the ozone catalyst being 45 to 60% of the effective volume of the catalytic oxidation tower or the reaction tank, the dosage of ozone is 50-75 mg/L, the reaction is 15-30min, and the COD of difficultly degraded industrial wastewater after deep treatment is subjected to standardized discharge. The method has the advantages of simple process, low cost and high degree of resource utilization,and the prepared ozone catalyst has stable catalytic performance and high catalytic activity.

The invention discloses a composite admixture modified cement-stabilized gangue mixture and a preparation method thereof. The mixture is prepared from the following raw materials in parts by weight: 55-65 parts of coarse aggregates of gangue, 45-35 parts of fine aggregates of gangue, 4-6 parts of cement, 11-15 parts of coal ash, 0.02-0.04 part of crack-resistant fibers, 0.02-0.04 part of reinforced fibers and 0.12-0.18 part of improving agent. The composite admixture modified cement-stabilized gangue mixture prepared by using the preparation method disclosed by the invention is good in pavement performance, excellent in compressive strength, crack resistance and durability and significant when being applied to a high-grade road base layer; and the composite admixture modified cement-stabilized gangue mixture disclosed by the invention belongs to a non-toxic and non-corrosive composite and is wide in raw material source, low in cost, environment-friendly and energy-saving in productionprocess and high in economic and social benefits.

A low-cost preparation process of an environment-friendly high-temperature brick and the high-temperature brick. The preparation process includes steps of: 1) mixing the raw materials including, by weight, 18-22 parts of black mud, 18-22 parts of pressure-discharged mud, 55-65 parts of waste residue of refractory bricks, 0.03-0.05 parts of PVA, 0.4-0.5 parts of lignin, 0.75-0.81 parts of sodium metasilicate and 43-48 parts of water, ball-milling the mixture to form slurry, and spray-drying the slurry to obtain a high-temperature brick powder material; 2) placing the high-temperature brick powder material in a pressing mould to press-shape the high-temperature brick powder material, and sintering the material in a kiln to obtain a finish product. The high-temperature brick not only has high-temperature fireproof effect but also is higher in strength, can be repeatedly used, is greatly reduced in preparation cost, is more environment-friendly and energy-saving, and has simple preparationprocess.

The invention discloses a spring steel material for an elevator and a preparation method spring steel material. The spring steel material for the elevator comprises the following components in parts by weight: 87-93.5 parts of iron, 2-3 parts of polyacrylonitrile-based carbon fiber, 1.1-1.5 parts of Mn, 0.9-1.2 parts of CrO, 0.2-0.5 part of B2O3, 0.02-0.8 part of Nb and 0.02-0.08 part of electric rock flour. The invention further provides a preparation method of the spring steel material for the elevator.

The invention provides low-oil high-quality suaeda salsa health-care moon cakes, and relates to moon cakes. The cake crusts of the moon cakes consist of the following components in parts by weight: 48-56 parts of low-gluten flour, 2.3-11 parts of whole suaeda salsa powder, 29-37 parts of invert sugar syrup, 3-11 parts of vegetable oil and 0.6-0.8 part of detergent granules. According to the low-oil high-quality suaeda salsa health-care moon cakes disclosed by the invention, through careful modern processing, extremely green suaeda salsa is obtained, natural probiotic functional factors of the suaeda salsa are reserved, the natural whole suaeda salsa powder is added to the cake crusts of the moon cakes, the high-oil abuse of conventional moon cakes is changed, the addition quantity of oil and fat in the cake crusts is reduced by 30-72%, besides, low oil and high quality are uniquely given to the conventional moon cakes through the green suaeda salsa, based on low oil, the original mouth feel and the original characteristics of the moon cakes are guaranteed, and the moon cakes have health-care effects and conform to the pursuit of people at the large health era.

The invention discloses a photovoltaic SE battery. The photovoltaic SE battery comprises a back field electrode, a back electrode, a protective film, a passivation layer, a P-type silicon substrate, aPN junction layer, an SE laser propulsion layer, an oxidation repair layer, an antireflection film layer, an auxiliary grid line electrode and a main grid line electrode, and a high solar cell conversion rate can be obtained through mutual cooperation of the structures of all the layers. Moreover, the invention discloses a preparation method of the photovoltaic SE battery, the whole preparation process is simple, the raw materials are simple and easy to obtain, and the production cost can be obviously reduced.

The invention relates to an anti-graffiti and scrubbing-resistant coating composition. The raw materials of the anti-graffiti and scrubbing-resistant coating composition comprise a component A and a component B, wherein the mass ratio of the component A to the component B is 100: (20-40); the component A comprises hydrophobic modified hydroxy acrylic resin, and the component B comprises a curing agent and alcohol ether esters; the hydrophobic modified hydroxy acrylic resin is prepared from hydrophobic gel, a fluorine surfactant and hydroxy acrylic resin; and the hydrophobic gel is prepared from polymethylsilane and alkoxy silicon resin. The invention also comprises a preparation method of the anti-graffiti and scrubbing-resistant coating composition. The product provided by the invention is energy-saving and environment-friendly, has low VOC, solves the problem of poor anti-graffiti effect of a water-based coating, and has a stain resistance score up to 87 scores. According to the method, the defect that the water-based coating is poor in stain resistance stability is overcome, after 10000 times of scrubbing resistance, the stain resistance still reaches 85%, and almost no attenuation exists.