Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing vanadium boride ultrafine powder through carbothermic boron heat
The invention discloses a method for preparing vanadium boride ultrafine powder through carbothermic boron thermal, and the method comprises the following steps: proportioning vanadium oxide and boron carbide according to a preset mass ratio of vanadium to boron in to-be-prepared vanadium boride, and proportioning a carbonaceous reducing agent according to the oxygen content in the vanadium oxide; uniformly mixing vanadium oxide, boron carbide and a carbonaceous reducing agent to obtain mixed powder; carrying out high-temperature heating on the mixed powder in an environment full of a protective atmosphere so as to carry out high-temperature carbon thermal reduction reaction and boron thermal reaction, and cooling to normal temperature; and washing, filtering and drying the cooled mixed powder to obtain the vanadium boride ultrafine powder. Vanadium oxide, boron carbide and a carbonaceous reducing agent are used as raw materials, the raw materials are uniformly mixed and heated according to a certain proportion to carry out a high-temperature carbon thermal reduction reaction and a boron thermal reaction, and the high-purity superfine vanadium boride powder is obtained after cooling, water washing, stirring, filtering and drying are carried out, so the production cost of vanadium boride is greatly reduced, and the particle size and the impurity content of the vanadium boride powder are greatly reduced.
本发明公开了一种碳热硼热制备硼化钒超细粉体方法，包括如下步骤：依据待制备硼化钒中钒和硼的预设质量比，配比钒氧化物和碳化硼，并依据钒氧化物中的氧含量配比碳质还原剂；对钒氧化物、碳化硼和碳质还原剂进行混匀，得到混合粉体；在充满保护气氛的环境中对混合粉体进行高温加热，以进行高温碳热还原反应和硼热反应，并冷却至常温；对冷却后的混合粉体水洗、过滤和烘干，得到硼化钒超细粉体。通过以钒氧化物、碳化硼和碳质还原剂为原料，按照一定比例进行混匀、加热以进行高温碳热还原反应和硼热反应，待冷却后水洗、搅拌、过滤及烘干，得到高纯超细的硼化钒粉体，大幅降低了硼化钒的生产成本，极大地降低了硼化钒粉体的颗粒粒度和杂质含量。
Method for preparing vanadium boride ultrafine powder through carbothermic boron heat
The invention discloses a method for preparing vanadium boride ultrafine powder through carbothermic boron thermal, and the method comprises the following steps: proportioning vanadium oxide and boron carbide according to a preset mass ratio of vanadium to boron in to-be-prepared vanadium boride, and proportioning a carbonaceous reducing agent according to the oxygen content in the vanadium oxide; uniformly mixing vanadium oxide, boron carbide and a carbonaceous reducing agent to obtain mixed powder; carrying out high-temperature heating on the mixed powder in an environment full of a protective atmosphere so as to carry out high-temperature carbon thermal reduction reaction and boron thermal reaction, and cooling to normal temperature; and washing, filtering and drying the cooled mixed powder to obtain the vanadium boride ultrafine powder. Vanadium oxide, boron carbide and a carbonaceous reducing agent are used as raw materials, the raw materials are uniformly mixed and heated according to a certain proportion to carry out a high-temperature carbon thermal reduction reaction and a boron thermal reaction, and the high-purity superfine vanadium boride powder is obtained after cooling, water washing, stirring, filtering and drying are carried out, so the production cost of vanadium boride is greatly reduced, and the particle size and the impurity content of the vanadium boride powder are greatly reduced.
本发明公开了一种碳热硼热制备硼化钒超细粉体方法，包括如下步骤：依据待制备硼化钒中钒和硼的预设质量比，配比钒氧化物和碳化硼，并依据钒氧化物中的氧含量配比碳质还原剂；对钒氧化物、碳化硼和碳质还原剂进行混匀，得到混合粉体；在充满保护气氛的环境中对混合粉体进行高温加热，以进行高温碳热还原反应和硼热反应，并冷却至常温；对冷却后的混合粉体水洗、过滤和烘干，得到硼化钒超细粉体。通过以钒氧化物、碳化硼和碳质还原剂为原料，按照一定比例进行混匀、加热以进行高温碳热还原反应和硼热反应，待冷却后水洗、搅拌、过滤及烘干，得到高纯超细的硼化钒粉体，大幅降低了硼化钒的生产成本，极大地降低了硼化钒粉体的颗粒粒度和杂质含量。
Method for preparing vanadium boride ultrafine powder through carbothermic boron heat
一种碳热硼热制备硼化钒超细粉体方法
WU YUEDONG (Autor:in) / PENG BEN (Autor:in) / WU LONG (Autor:in)
04.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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