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公开(公告)号：US20240124365A1
公开(公告)日：2024-04-18
申请号：US18209905
申请日：2023-06-14
发明人： Youjun LU , Lutong YANG , Xiang LIU , Chuyun WANG , Wuyang SONG , Jiahao XU
IPC分类号： C04B35/58 , C04B35/626 , C04B35/645
CPC分类号： C04B35/58028 , C04B35/62625 , C04B35/62655 , C04B35/6268 , C04B35/645
摘要： A preparation method of submicron powder of high-entropy nitride via nitride thermal reduction with mechano-chemical assistance, comprising material preparation—grinding—activation—preforming—reaction. In the present invention, high-entropy metal nitride and silicon nitride is used as raw materials, soft mechanochemical activation technologies are used to reduce reaction activation energy of the system, thereafter, by thermal reduction of the nitride, high-purity high-entropy nitride powder is prepared with solid phase methods, and the shortage of high-purity high-entropy nitride powder is addressed. There is no impure phase in the (Hf0.2Zr0.2Ti0.2Nb0.2Ta0.2)N high entropy powder prepared according to the present invention, and a single phase solid solution of good crystallinity is formed, and distribution of elements and ingredients in the powder is even, no foreign element is present, and oxygen content is controlled to be less than 0.3%.
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公开(公告)号：US20210331929A1
公开(公告)日：2021-10-28
申请号：US17156161
申请日：2021-01-22
发明人： Zhilin SHENG , Xuetao LUO , Liuqing HUANG , Jinfu MA , Wang SHENG , Hui LU , Chunping HOU , Zhanlin CHEN
IPC分类号： C01B33/021
摘要： A device and a method for producing a high-purity industrial silicon, wherein the device is a refining ladle provided with a steel plate layer, a heat insulation layer, a heat preservation layer, a protective layer and a working layer from outside to inside. The refining ladle is provided with two conical oxygen inlet channels and two conical argon inlet channels at the bottom. The method comprises: preparing a molten silicon with temperature≥2200° C.; pouring the molten silicon into a refining ladle after introducing oxygen and argon thereto and keeping the gas pressure at 1 standard atmospheric pressure, and keeping the molten silicon at 1700-1900° C.; adding a slag-forming agent thereto, and introducing oxygen and argon from the refining ladle bottom, obtaining a slag molten silicon; cooling the slag molten silicon to ambient temperature, solidifying and separating, obtaining a high-purity industrial silicon.
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公开(公告)号：US20210188707A1
公开(公告)日：2021-06-24
申请号：US16927034
申请日：2020-07-13
发明人： Fenglan HAN , Yangwei QU
摘要： The present invention discloses a copper slag-fly ash geopolymer, a preparation method thereof, and use thereof, belongs to the technical field of geopolymer. The preparation method of copper-fly ash geopolymer provided by the application comprises the steps of: mixing the copper slag, fly ash and alkali activator solution, obtaining a slurry; proceeding polymerization to the slurry, obtaining a copper slag-fly ash geopolymer. The fly ash and copper slag are used as raw materials in the application, which greatly improve the utilization rate of the industrial waste residue. The advantages line in that no need for additional addition of inorganic reinforcing filler, low production cost, simple operation and competency for industrial production. Moreover, the copper slag-fly ash geopolymer has good compressive strength, and can solidify the heavy metal ions in copper slag at the same time, thus reducing the environmental pollution.
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公开(公告)号：US20210355028A1
公开(公告)日：2021-11-18
申请号：US16876406
申请日：2020-05-18
发明人： Lan'er Wu , Fenglan Han
摘要： A mineralizer composition for Pidgeon silicothermic process for smelting magnesium consists of fluorite and a boron-containing compound. Amounts of the fluorite and the boron-containing compound meet the following equation: Mfluo-original=(1−x)Mfluo+(m)(x)MB, where, Mfluo-original is a mass of the fluorite required in a conventional Pidgeon silicothermic process in which no boron-containing compound is introduced to replace a fraction or all of the total fluorite, Mfluo is a mass of the fluorite in the composition, MB is a mass of the boron-containing compound in the composition, 0.5≤x≤1, and 2≤m≤8. A Pidgeon silicothermic process for smelting magnesium is also provided, which employs the mineralizer composition. The composition and process of the disclosure enable reduction and even avoidance of dust pollution caused by fluorite-containing magnesium slag.
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公开(公告)号：US11008247B1
公开(公告)日：2021-05-18
申请号：US15929607
申请日：2020-05-12
发明人： Fenglan Han , Yajuan Liu
摘要： A glass ceramic and a preparation method thereof include a step of melting calcined electrolytic manganese slag to obtain molten glass. The molten glass is sequentially molded, nucleated, and crystallized to obtain the glass ceramic. The calcined electrolytic manganese slag is taken as a raw material, so that harmful gases are not generated in the raw material melting process, and secondary pollution is not caused. The preparation method provided by the present invention has the advantages of simple operation, high utilization rate of electrolytic manganese slag and low cost. Moreover, the prepared glass ceramic has good mechanical properties and corrosion resistance.
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