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    • 2. 发明授权
    • Remediation of soil polluted with phosphorus-containing wastes
    • 用含磷废物污染的土壤的补救
    • US06169222A
    • 2001-01-02
    • US09332115
    • 1999-06-14
    • James C. Barber
    • James C. Barber
    • C01B2500
    • C01B3/02C01B25/01C01B32/40
    • Elemental phosphorus was produced by the Tennessee Valley Authority (TVA) at Muscle Shoals, Ala. by smelting phosphatic material with carbon in electric furnaces. Solid wastes containing elemental phosphorus accumulated at the production facility as a result of TVA's operation at Muscle Shoals. Soil became polluted with elemental phosphorus from contact with phosphorus-containing wastes and remediation of the polluted soil is needed to restore land at the site to usefulness. The present invention entails agglomeration of the polluted soil by nodulizing to prepare feedstock for electric furnaces; reacting phosphoric acid with finely divided phosphate ore forming a porous, monolithic mass of monocalcium phosphate monohydrate; disintegrating the monolithic mass to form lumps; heating lumps to obtain anhydrous monocalcium phosphate; and simultaneous smelting of agglomerated soil and anhydrous monocalcium phosphate with carbon in an electric furnace. No residue of polluted soil remains but calcium silicate slag, ferrophosphorus, and carbon monoxide are produced when the polluted soil is smelted. Calcium silicate slag, ferrophosphorus, elemental phosphorus, and carbon monoxide are produced when anhydrous monocalcium phosphate is smelted.
    • 元素磷由位于Ala的Muscle Shoals的田纳西河谷管理局(TVA)生产,通过在电炉中用碳熔化磷酸盐材料。 由于TVA在Muscle Shoals的营运,在生产设施中积累了含有元素磷的固体废物。 与含磷废物接触,土壤被元素磷污染,需要对污染土壤进行修复,以恢复现场土地的有用性。 本发明需要通过结节聚集污染土壤以制备电炉的原料; 使磷酸与精细分离的磷酸盐矿石反应,形成多孔整体块状的一磷酸钙一水合物; 分解整块块以形成团块; 加热块以获得无水磷酸一钙; 并在电炉中同时熔​​炼附着碳和无水一磷酸钙。 当污染土壤被冶炼时,没有残留的污染土壤仍然产生硅酸钙炉渣,磷酸铁和一氧化碳。 当无水一磷酸钙熔炼时,产生硅酸钙渣,磷酸铁,元素磷和一氧化碳。
    • 3. 发明授权
    • Method for producing cathode active material and method for producing non-aqueous electrolyte cell
    • 阴极活性物质的制造方法及非水电解质电池的制造方法
    • US06814764B2
    • 2004-11-09
    • US09966918
    • 2001-09-28
    • Mamoru HosoyaYuzuru FukushimaHideki SakaiJunji Kuyama
    • Mamoru HosoyaYuzuru FukushimaHideki SakaiJunji Kuyama
    • C01B2500
    • H01M10/052H01M4/136H01M4/5825H01M10/0565H01M2004/028Y10T29/49108
    • A method for producing a cathode active material having superior cell characteristics through single-phase synthesis of a composite material composed of a compound represented by the general formula LixFe1-yMyPO4 and a carbon material positively and a method for producing a non-aqueous electrolyte cell employing the so produced cathode active material. To this end, the cathode active material is prepared by a step of mixing the starting materials for synthesis of the compound represented by the general formula LixFe1-yMyPO4, a step of milling a mixture obtained by the mixing step, a step of compressing the mixture obtained by the mixing step to a preset density and a step of sintering the mixture obtained by the compressing step. A carbon material is added in any one of the above steps prior to the sintering step. The density of the mixture in the compressing step is set to not less than 1.71 g/cm3 and not larger than 2.45 g/cm3.
    • 通过由通式Li x Fe 1-y M y PO 4表示的化合物和碳材料构成的复合材料通过单相合成制造具有优异的电池特性的正极活性物质的制造方法以及使用 这样生产的阴极活性材料。 为此,通过混合由通式LixFe1-yMyPO4表示的化合物的合成原料,通过混合步骤研磨混合物的步骤,压缩混合物的步骤来制备阴极活性材料 通过混合步骤获得预定浓度,以及烧结通过压缩步骤获得的混合物的步骤。 在烧结步骤之前,在上述任一步骤中加入碳材料。 压缩步骤中混合物的密度设定为不小于1.71g / cm 3且不大于2.45g / cm 3。
    • 5. 发明授权
    • Method of preparing phosphorus
    • 磷的制备方法
    • US06207024B1
    • 2001-03-27
    • US09412774
    • 1999-10-04
    • Richard R. Severns
    • Richard R. Severns
    • C01B2500
    • C01B25/02
    • A method of producing phosphorus in which a mixture of phosphoric acid and carbon reductant is exposed to microwaves at a power level sufficient to heat the mixture to a temperature at which phosphorous is produced. This method can be carried out at lower temperatures than conventional phosphorous production and does not give rise to the solid waste normally formed in conventional phosphorous production. The phosphorus thus formed can be converted back to phosphoric acid, thus effecting purification of the phosphoric acid.
    • 一种生产磷的方法,其中磷酸和碳还原剂的混合物以足以将混合物加热到产生磷的温度的功率水平暴露于微波。 该方法可以在比常规磷生产更低的温度下进行,并且不会导致在常规磷生产中通常形成的固体废物。 由此形成的磷可以转化成磷酸,从而进行磷酸的纯化。