3113results about How to "Small granularity" patented technology

The invention discloses a transition metal sulfide / graphene composite material which is composed of a nano transition metal sulfide and graphene, wherein the transition metal sulfide is Ni2S3, NiS, FeS, FeS2, CoS, CoS2, CuS2, CuS, MnS or MnS2. Under the dispersion and loading actions of the graphene, the transition metal sulfide can be uniformly distributed and have small particle size, the stability and loop stability of the transition metal sulfide in the charging and discharging process can be effectively enhanced, and the composite material can be used as a lithium ion battery negative pole material. The invention also discloses a one-step low-temperature preparation method of the composite material, which has the advantages of simple technique, low cost, short cycle, low energy consumption and the like and is suitable for large-scale industrial production.

The invention relates to a manufacturing method for nanometer rod film of zinc oxide on fiber product, comprising (1) by sol-gel method ZnO nano-crystal grain is prepared and a great deal of ZnO seed crystal is deposited on the surface of fiber product, molar concentrations of zinc salt and alkaline agent are all 0.001M-0.75M; (2) by hydrothermal method or precipitation of chemical solution pool, nanometer rod film of zinc oxide grows on fiber product, molar concentrations of zinc salt solution and complexing agent solution are all 0.001M-0.05M; ZnO nanometer rod film with equal surface and good directivity is obtained. The manufacturing method is provided with simple method and low cost. It is suitable for industrial production.

The invention relates to a manufacturing method of micro spherical titanium and titanium alloy powder, and belongs to the technical field of metal and alloy powder manufacturing. The manufacturing method comprises the steps that a titanium and titanium alloy wire or bar is manufactured by using sponge titanium in the national standard TA1 grade as a raw material; forvacuum treatment is conducted on a powder manufacturing device, and then the powder manufacturing device is filled with inert protective gas; the raw material wire or bar is fed into a smelting chamber through a continuous feeding mechanism and a straightener, the raw material is heated and smelted through a high-frequency induction coil, and the alloy raw material is molten to form stable liquid flow or drip flow; supersonic atomizing nozzles in atomizers are opened, and breakage, dispersion and forced cooling powder manufacturing are conducted on the molten liquid flow or the drip flow; powder is obtained through a powder collector, and is screened through an ultrasonic vibrating screen to obtain the micro spherical titanium and titanium alloy powder. The micro spherical titanium and titanium alloy powder manufactured through the manufacturing method is small in particle size, high in degree of sphericity, good in liquidity and low in impurity content, and has smooth surfaces.

The invention relates the method of extracting aluminium from high-silicon siliceous mineral. The method comprises the following steps: mixing the aluminous ore and sulfuric acid, baking, leaching with water, filtering leachate, getting aluminium sulphate solvent, thickening filter liquor, separating out aluminium sulphate, drying, dewatering, getting anhydrous aluminium sulphate; calcining aluminium sulphate, and getting Al2O3. The invention can extracte aluminium from high-silicon siliceous mineral, coal gangue, coal ash, China clay, andalusite, feldspath, ganister, nepheline and vermiculite without baking. The method has the advantages of simple technology, little corrosion, easy operation and high recovery ratio.

The invention belongs to the technical field of medicines, and discloses a delivery system based on protein-phospholipid. The system comprises a protein-phospholipid dispersion with the weight ratio of between 1:100 and 100:1, wherein the grain size of the protein-phospholipid is between 5 and 1,000nm, and the surface of the phospholipid or the surface and the inside of the phospholipid are coated / covered by a protein layer. The preparation method comprises: preparing a phospholipid containing phase, preparing a protein containing water phase, performing the homogenization treatment on the phospholipid containing phase and the protein containing water phase at a temperature of between 0 and 40 DEG C and under a pressure of between 400 and 40,000psi, and obtaining a dispersion system with the average grain size of less than 1,000nm. The delivery system has the advantages of realizing the delivery in various ways such as injection, oral taking, cavities and canals, skin and the like, and lowering side effects of medicines. The delivery system solves the problems of drug-loading rate and stability of protein nano-grain and liposome, and adopts low-toxicity organic solvent, even no organic solvent; and the preparation method is easy for industrialized application, and can prepare a liquid type protein-phospholipid containing delivery system.

The invention relates to a method for preparing no-binding agent ZSM-11 zeolite, which mainly aims at overcoming the defects of difficult recovery, easy deactivation and easy aggregation existing in the practical application of the zeolite powder and the problems of small effective surface area and limited diffusion due to the addition of the binding agent in the forming process. In the invention, at least one of diatomaceous earth, carbon white, silicasol or water glass is taken as a silicon source, at least one of aluminum oxide, aluminum salt or aluminate is taken as an aluminum source, and proper quantity of necessary crystal seed guiding agents are added and subjected to pugging, extrusion and forming so as to obtain a precursor mixture with the mass ratio of XNa2O:YAl2O3:100SiO2, wherein x is between 0.5 and 14, and y is between 0 and 6, and the precursor mixture is subjected to hydrothermal crystallization treatment in the water solution containing tetrabutyl ammonium positive ions and converted to the no-binding agent ZSM-11 zeolite. The technical proposal of the invention better resolves the problems, and can be applied to the industrial preparation of the ZSM-11 zeolite molecular sieve catalyst.

A method and mechanism is disclosed for implementing storage and compression in a computer system. Each granular portion of a file can be individually stored in either a compressed storage unit or an uncompressed storage unit. The storage units can be allocated apriori or on an as-needed basis.

The invention discloses a Bi2Te3 thin-piece / graphene composite material. The Bi2Te3 thin-piece / graphene composite material consists of a micron-sized Bi2Te3 thin sheet and graphene. Due to the actions of dispersion, bearing and isolation of the graphene, the sintering of the micron-sized Bi2Te3 thin sheet in the heat-treatment process can be effectively prevented for maintaining effective scattering of the crystal boundary to phonons, and the great significance for improving the thermoelectric properties of the Bi2Te3 material is embodied. The composite material can be used as a thermoelectric material. The invention also discloses a preparation method of the composite material by a one-step hydrothermal method or a one-step solvothermal method, and has the advantages of simple process, low cost, short period and low energy consumption and the like.

A process for preparing nano hydroxyapatite powder comprises the steps of, mixing Ca(NO3)-2-4H20 and NH4-2HPO-4 according to the mol ratio of Ca:P = 1.67-2.5:1, dissolving by charging distilled water, making the concentration of the Ca2++ ion to be 0.01-0.1 mol / L, charging aquadrate powder into the solution according the ratio of Ca(NO3)-2-4H2O : NH4-2HPO-4 = 1:5-12, conducting sound chemo synthesis through multiple frequency phonochemical generator, filtrating and washing the suspending liquid, placing the filtered material into vacuum drying oven for drying at the temperature of 80-100 deg. C, thus the nano hydroxyapatite powder can be obtained.