文献类型：专利

英文题名：Extraction of molybdenum and nickel from acrylonitrile waste catalyst by sieving waste catalyst, removing large particle impurities, drying, leaching, oscillating, cooling, suction-filtering, washing filter cake and magnetic force stirring

作者：LI Z;LIU J;QIU Z;MA B;XUE Y;YANG J;ZHANG X;FU X;XU Y;ZHAO Z

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN105603195-B

公开日：2017-06-13

语种：英文

收录：DERWENT

摘要：NOVELTY - Extraction of molybdenum and nickel from acrylonitrile waste catalyst comprises sieving acrylonitrile waste catalyst, removing large particle impurities, drying, leaching, oscillating, cooling to room temperature, suction-filtering, washing filter cake with deionized water, adding calcium hydroxide emulsion, magnetic force stirring to form calcium oxalate and calcium molybdate precipitate, vacuum suction-filtering, washing filter cake with deionized water, transferring to beaker, removing filtrate, slowly adding excess diluted nitric acid, magnetic force stirring and vacuum suction-filtering. USE - Method for extracting molybdenum and nickel from acrylonitrile waste catalyst. ADVANTAGE - The method has nickel recovery rate of 97%, oxalate product purity of 99.91%, molybdenum recovery rate of 95% and molybdenum oxide product purity of 97.88%, simple technology and green environmental protection, and avoids high consumption and pollution of sintering sample. DETAILED DESCRIPTION - Extraction of molybdenum and nickel from acrylonitrile waste catalyst comprises sieving acrylonitrile waste catalyst by 100-mesh standard nylon sieve, removing large particle impurities, drying at 105 degrees C for 12 hours, leaching, oscillating at 50 degrees C at speed of 200 revolutions/minute for 2.5-3 hours, cooling to room temperature, suction-filtering, washing filter cake with deionized water, adding calcium hydroxide emulsion, magnetic force stirring to form calcium oxalate and calcium molybdate precipitate, vacuum suction-filtering, washing filter cake with deionized water for 3 times, transferring to beaker, removing filtrate, slowly adding excess 50% (v/v) diluted nitric acid, magnetic force stirring for 20 minutes, vacuum suction-filtering, retaining filtrate, removing calcium oxalate filter slag, adding 50% (v/v) ammonium hydroxide, magnetic force stirring, suction-filtering, adding excess concentrated nitric acid, evaporating, concentrating, taking ammonium molybdate precipitate, suction-filtering, baking in muffle furnace at 450 degrees C for 3 hours to obtain molybdenum oxide product, clarifying, electric heating for 30 minutes, adding liquid to cone bottle, washing filter cake with deionized water for 3 times, and drying at 105 degrees C for 6 hours. DESCRIPTION OF DRAWING(S) - The drawing shows a process flow diagram of extraction of molybdenum and nickel from acrylonitrile waste catalyst (Drawing includes non-English language text).