摘要:
The present invention relates to a method for synthesizing molybdenum dioxide; to a method for manufacturing a molybdenum dioxide dispersion sol composition with the function of selectively blocking a near-infrared area using the same; and an insulating film including the same. The present invention provides a method for manufacturing a molybdenum dioxide dispersion sol composition, which has the improved property of blocking waves in a near-infrared area and is manufactured via a simple process, by synthesizing molybdenum dioxide using ammonium molybdate as a precursor, mixing the synthesized molybdenum dioxide, a dispersant and an organic solvent, and thus manufacturing a dispersion sol via sequential heat treatment.
摘要:
PURPOSE: A method of manufacturing low oxygen ingot is provided to manufacture low oxygen ingot with a small amount of oxygen by dehydrating molybdenum trioxide as a first step and vacuum melt the molybdenum trioxide as a second step. CONSTITUTION: A method of manufacturing low oxygen ingot comprises the following steps. Raw material metal oxide is put into a dehydrogenating apparatus and hydrogen gas is added to the apparatus. The raw material metal oxide is heated for a certain period of time to get metal oxide which is reduced. The reduced metal oxide is heated for a certain period of time to get metal oxide powder. The metal oxide powder is heated for a certain period of time to be removed from gas. The heated metal oxide powder is vacuum melted. The heating process for removing gas is carried out at a temperature of 1200-1500°C for 1-2 hours. The raw material metal oxide is molybdenum trioxide(MoO3), the reduced metal oxide is molybdenum dioxide(MoO2) and the reduced metal oxide poser is molybdenum(Mo). The vacuum melting is carried out under the atmosphere of inactive gas and H2 gas 5-20 % for 3-20 minutes. [Reference numerals] (ST100) Put molybdenum trioxide(MgO3) powder into a hydrogen reduction apparatus; (ST200) Enable H2 gas to flow into the hydrogen reduction apparatus(supplying flux: 1000-2000cc/min); (ST300) Heat molybdenum trioxide powder after reaching to a first reducing temperature(temperature: 500-600°C, maintaining time: 2 hour); (ST400) Heat molybdenum dioxide after reaching to a second reducing temperature(temperature: 800-1000°C, maintaining time: 1 hour); (ST500) Block H2 gas; (ST600) Degas and heat treat obtained metal molybdenum powder(heat treatment temperature: 1200-1500°C, maintaining time: 1 hour); (ST700) Put metal molybdenum powder into a vacuum dissolving furnace(vacuum dissolving atmosphere: Ar + 5% H2 gas); (ST800) Vacuum dissolve(vacuum dissolving time: 5-20 minutes); (ST900) Obtain molybdenum ingot
摘要:
PURPOSE: A method for manufacturing vanadium, molybdenum, aluminium oxide from waste catalyst for desulfurization is provided to increase the recycling rate of waste materials. CONSTITUTION: A method for manufacturing vanadium, molybdenum, aluminium oxide from waste catalyst for desulfurization comprises the following steps of: heating the waste catalyst for desulfurization to remove remaining oil therefrom, and pulverizing the heated waste catalyst; mixing the waste catalyst and concentrated sulfuric acid in a bath, and heating and stirring the mixture at 250~270°C to obtain a sulphate mixture; adding 90~95°C water 6-15 times the amount of the sulphate mixture and filtering it; adding a 20wt% mixture of kerosene and mono-octylamine at a ratio of 5 to 5 by weight; stirring at 50~90°C for 2-3 hours; and floating the vanadium component included in the sulphate mixture liquid and drying the vanadium component.
摘要:
본 발명은 산화 몰리브덴 제조방법에 관한 것으로서, 상세하게는 황과 갖은 유해 불순물의 함량을 0.01%로 까지 감소시킨 고품위 산화 몰리브덴을 경제적인 방법으로 제조하기 위한 방법에 관한 것이다. 본 발명은 0.01% 이상 황이 함유된 산화 몰리브덴 분말과 탄산 나트륨을 요융노에 투입하여 900℃의 온도로 가열, 용융하여 용탕을 제조한 다음; 이 용량을 용융노로 부터 출탕하여 자연 냉각시키는 것으로 행하여지는 황의 함량이 낮은 고품위의 산화 몰리브덴의 제조방법을 제공한다.