Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing deep hypothermia cold storage material gadolinium oxysulfide microspheres
The invention provides a method for preparing gadolinium oxysulfide microspheres and the gadolinium oxysulfide microspheres prepared by the method. The method comprises the following steps: (S1) mixing and stirring Gd2O3, sublimed sulfur and sodium carbonate to obtain mixed powder, calcining in a protective atmosphere, and washing with diluted hydrochloric acid, alcohol and deionized water to obtain pure gadolinium oxysulfide powder; (S2) prepressing the gadolinium oxysulfide powder obtained in the step (S1) to obtain a green body, sintering the green body by adopting a discharge plasma sintering furnace under a vacuum condition to obtain a gadolinium oxysulfide block, and mechanically crushing and screening particles with the particle diameter of 100-500 microns; and (S3) treating the gadolinium oxysulfide particles obtained in the step (S2) into gadolinium oxysulfide microspheres by adopting a plasma spheroidizing technology. The gadolinium oxysulfide microspheres prepared by the method are high in sphericity degree, smooth in surface and large in low-temperature specific heat, and can be used as a deep hypothermia cold storage material after being filled into a cold storage machine.
本发明提供了一种制备硫氧化钆微球的方法，以及由该方法制备得到的硫氧化钆微球。所述方法包括如下步骤：(S1)将Gd2O3、升华硫、碳酸钠混合搅拌得到混合粉体，并在保护气氛下进行煅烧，经稀盐酸、酒精、去离子水洗后获得纯净的硫氧化钆粉末；(S2)将步骤(S1)获得的硫氧化钆粉末进行预压得到生坯，在真空条件下对该生坯采用放电等离子烧结炉进行烧结得到硫氧化钆块体，并机械破碎筛取颗粒径为100～500μm的颗粒；(S3)采用等离子球化技术将步骤(S2)获得的硫氧化钆颗粒处理为硫氧化钆微球。该方法制备的硫氧化钆微球球形度高、表面光洁、低温比热大，将其填充到蓄冷机中，可作为深低温蓄冷材料使用。
Method for preparing deep hypothermia cold storage material gadolinium oxysulfide microspheres
The invention provides a method for preparing gadolinium oxysulfide microspheres and the gadolinium oxysulfide microspheres prepared by the method. The method comprises the following steps: (S1) mixing and stirring Gd2O3, sublimed sulfur and sodium carbonate to obtain mixed powder, calcining in a protective atmosphere, and washing with diluted hydrochloric acid, alcohol and deionized water to obtain pure gadolinium oxysulfide powder; (S2) prepressing the gadolinium oxysulfide powder obtained in the step (S1) to obtain a green body, sintering the green body by adopting a discharge plasma sintering furnace under a vacuum condition to obtain a gadolinium oxysulfide block, and mechanically crushing and screening particles with the particle diameter of 100-500 microns; and (S3) treating the gadolinium oxysulfide particles obtained in the step (S2) into gadolinium oxysulfide microspheres by adopting a plasma spheroidizing technology. The gadolinium oxysulfide microspheres prepared by the method are high in sphericity degree, smooth in surface and large in low-temperature specific heat, and can be used as a deep hypothermia cold storage material after being filled into a cold storage machine.
本发明提供了一种制备硫氧化钆微球的方法，以及由该方法制备得到的硫氧化钆微球。所述方法包括如下步骤：(S1)将Gd2O3、升华硫、碳酸钠混合搅拌得到混合粉体，并在保护气氛下进行煅烧，经稀盐酸、酒精、去离子水洗后获得纯净的硫氧化钆粉末；(S2)将步骤(S1)获得的硫氧化钆粉末进行预压得到生坯，在真空条件下对该生坯采用放电等离子烧结炉进行烧结得到硫氧化钆块体，并机械破碎筛取颗粒径为100～500μm的颗粒；(S3)采用等离子球化技术将步骤(S2)获得的硫氧化钆颗粒处理为硫氧化钆微球。该方法制备的硫氧化钆微球球形度高、表面光洁、低温比热大，将其填充到蓄冷机中，可作为深低温蓄冷材料使用。
Method for preparing deep hypothermia cold storage material gadolinium oxysulfide microspheres
一种制备深低温蓄冷材料硫氧化钆微球的方法
ZHANG JIUXING (Autor:in) / WANG NAN (Autor:in) / LUO SHIFENG (Autor:in) / LI XIANG (Autor:in) / WANG YAN (Autor:in) / YANG XINYU (Autor:in) / HAN CUILIU (Autor:in) / LI DONGHUI (Autor:in)
15.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
F28D
Wärmetauscher, soweit in keiner anderen Unterklasse vorgesehen, in denen die Wärmetauschmittel nicht in direkte Berührung miteinander kommen
,
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
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