1results about How to "High molybdenum content" patented technology

This invention discloses a method for extracting high-purity ammonium tetramolybdate from a waste oil hydrogenation catalyst. S1, Primary ammonia dissolution: 28% ammonia water, water, and molybdenum acid extracted from the waste oil hydrogenation catalyst are added to a primary dissolution vessel. The mixture is stirred until the molybdenum acid is fully dissolved. The reaction time is controlled to 1 hour. The pH of the dissolved solution is 7-8. The molybdenum acid has a water content of 35% and a Mo content of 46-50%. This invention employs a stepwise deep impurity removal process of "magnesium chloride for phosphorus removal + 231 resin for vanadium removal," and sets up dual phosphorus and vanadium content detection to ensure that phosphorus <0.01g / L and vanadium <0.01g / L before proceeding to subsequent processes. The molybdenum-vanadium separation coefficient of 231 resin is much higher than that of ordinary resin, effectively avoiding impurity entrainment.