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2000results about How to "Low raw material cost" patented technology

Low cost active powder concrete and preparation thereof

The invention discloses active powder concrete which is prepared by Portland cement, steel slag powder, fly ash, silicon ash, effective water reducing agent, river sand, mixing water and steel fiber with the mass ratios of 0.52 to 0.58 : 0.16 to 0.18 : 0.10 to 0.16 : 0.13 to 0.16 : 0.012 to 0.018 : 0.9 to 1.1 : 0.14 to 0.18 : 0.156 to 0.234. The preparation method thereof is as follows: each component is sequentially added into a stirring machine for being uniformly stirred and shaped; then after the components are maintained, the temperature is raised to 80 to 90 DEG C at the temperature rising speed of 15 to 20 DEG C/h and then constant temperature maintaining is carried out for 72 to 96h; then, the components are cooled to room temperature at the cooling speed of not more than 20 DEG C/h to obtain the active powder concrete product. The invention employs the industrial wastes like steel slag powder and fly ash to replace quartz powder, partial cement and silicon ash, and employs thin river sand to replace quartz sand to prepare the active powder concrete of 200 grade under the maintaining conditions of normal pressure below 100 DEG C, thus not only being capable of remarkably reducing the material cost and the shaping maintaining cost, but also playing important roles on saving resources and energies, protecting the environment and promoting sustainable development as a large amount of industrial waste slag is used.
Owner:WUHAN UNIV OF TECH

Lithium ion flow redox battery

The invention provides a lithium ion flow redox battery, belonging to the technical field of lithium ion batteries. The lithium ion flow redox battery comprises a positive electrode suspension tank, a negative electrode suspension tank and a battery reactor, wherein the positive electrode suspension tank contains the mixture of positive electrode composite material particles and an electrolyte; the negative electrode suspension tank contains negative electrode composite material particles and an electrolyte; the battery reactor comprises a positive electrode current collector, a negative electrode current collector and one layer or a plurality of layers of microporous separators; the microporous separators separate the positive electrode current collector from the negative electrode current collector in an insulation mode so as to respectively form a positive electrode chamber and a negative electrode chamber; the positive electrode chamber is communicated with the positive electrode suspension tank through a seal pipeline; and the negative electrode chamber is communicated with the negative electrode suspension tank through a seal pipeline. Compared with a full vanadium flow redox battery, the lithium ion flow redox battery has the advantage of high energy density, the adoption of the environmentally-friendly and non-toxic electrolyte and low cost, and is applicable to large-scale energy storage of power grids.
Owner:BEIJING HAWAGA POWER STORAGE TECH +1

Method for producing biodiesel by high-density fermentation of heterotrophic chlorella

InactiveCN101230364ALow raw material costOptimizing conditions for heterotrophic fermentationFatty acid esterificationUnicellular algaeBiodiesel feedstockBiodiesel
The invention discloses a method of producing bio-diesel by fermenting the heterotrophic chlorella in high density which belongs to the renewable biological energy field. The method uses the heterotrophic chlorella fermented in high density in the bio-reactor as a raw material, which screens the chlorella species having high growth rate and high oil content, directly inoculates into the bottle as the first-class germ to culture then transfers to the fermentation cylinder to undergo the second-glass high density fermentation; the reaction condition is then optimized, and the process is controlled; the culture containing the carbohydrate is dripped to provide the nutrition for the cell growth, therefore the heterotrophic chlorella cells cultured in high density with density of 108g / L and oil content of 61 percent are separated, collected and dried; the algae oil is extracted, and the bio-diesel is produced by transesterification reaction; the invention reduces the cost for the raw material of bio-diesel, and satisfies the demand of industrialized application of producing bio-diesel by heterotrophic chlorella cells, therefore the technique of the invention becomes an economical and effective way of making oils from bio-diesel materials.
Owner:TSINGHUA UNIV

Energy-saving slag thermal insulator

The invention relates to an energy-saving slag thermal insulator, and belongs to the technical field of energy conservation, emission reduction and comprehensive utilization in the metallurgy industry. The thermal insulator comprises the following main chemical components in percentage by weight: 25 to 70 percent of SiO2, 1 to 25 percent of Al2O3, 1 to 40 percent of CaO, 0 to 20 percent of MgO, 0 to 10 percent of F<->, 0 to 10 percent of R2O (R is a monovalent metal ion), 0 to 10 percent of Fe2O3, 5 to 60 percent of fixed carbon with bulk density of 0.25 to 0.75g/cm<3>. The thermal insulator has high thermal insulation performance and can reduce the thermal loss of high-temperature slag; the thermal insulator contains a certain amount of fixed carbon, so heat generated in the chemical reaction of the fixed carbon can be used for further making up the thermal loss of the slag; meanwhile, the thermal insulator belongs to a silicon-aluminum material, and part or all of the thermal insulator can be dissolved in the slag finally so as to improve the chemical composition of the slag and reduce the melting point of the slag. The thermal insulator has the advantages of simple production process, low cost, and suitability for various processes for utilizing the sensible heat of the slag, increasing the fluidity of the slag or improving the performance of the slag.
Owner:UNIV OF SCI & TECH BEIJING

NANO particle/polyamide composite material, preparation method therefor, and use thereof

The present invention relates to the technical field of polymer composite material, and a nano particle / polyamide composite material, a preparation method therefor and a use thereof are disclosed. The nano particle / polyamide composite material comprises 0.01-99 parts by weight of inorganic nano particles and 1-99.99 parts by weight of a polyamide matrix. The preparation method for the nano particle / polyamide composite material of the present invention comprises hydrolysis polymerization or anionic polymerization. The nano particle / polyamide composite material of the present invention has the particular functions of nano materials, while having the advantages of the polymer matrix such as good mechanical performance and being easy for processing and molding. The nano particle is well dispersed in the polyamide matrix, is physically stable, and has a strong interaction at an interface between the nano particles and the polymer matrix, thus being useful as a structural material, a functional material and a polymer masterbatch. The cost of raw materials used in the synthesis method is low, the production apparatus is simple, and the route is green and environment friendly. Therefore, the method is applicable to large-scale industrial production.
Owner:SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD

Positive electrode material of multi-component composite lithium ion cell and its preparation method

The invention discloses a positive pole material of multiple composite lithium iron battery and a production method thereof, the technical issue to be solved is to improve electrochemical performances of the positive pole material, the positive pole material of the invention has the general formula: Li0.8-1.2NixCoyzO2, the crystal structure of the positive pole material is hexagonal system; crystal lattice is doped with more than one elements selected from the group consisting of Ti, Al, Mg, Cr, Zn, Ce, La, Lu, Y and F, the production method of the positive pole material comprises the steps of: synthesis of substrate materials, doping of substrate crystal lattices, mixing with lithium source compounds, sintering. As compared with the prior art, the produced positive pole material of multiple composite lithium iron battery of the invention combines into the simulative battery with metallic lithium sheets, and discharges and charges at 0.3C of discharge and charge current density, when the discharge and charge voltage is 2.5-4.2V, the maximum discharge capacitance reaches over 160mAh / g, the first Coulomb efficiency reaches more than 90%, the capacitance retention rate after circulation for 100 weeks is above 92%, the costs of raw materials and production are low, accordingly, the invention is apt for large-scale industrial production.
Owner:BTR NEW MATERIAL GRP CO LTD
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