摘要
渣油、加氢废催化剂综合回收线采用国内首创的一次顺流焙烧及焚烧技术,在碱性环境的改进型回转窑和高温二燃室中充分去除二噁英和其他有害元素,焙烧后的熟料采用中性浸出,除杂合格的浸出液采用废水系统回收的硫酸铵溶液沉钒,沉钒后的废液再次回收其中的钨、钼金属,浸出渣采用二次碱性焙烧回收其中的金属铝,湿法浸出并三效蒸发得到副产品氢氧化铝。
The comprehensive recovery line of residue oil and spent hydrogenation catalyst adopts the first domestic downstream roasting and incineration technology to fully remove dioxin and other harmful elements in the improved Rotary kiln and high-temperature secondary combustion chamber in alkaline environment.The calcined clinker is subject to neutral leaching.The qualified leaching solution for impurity removal is used to precipitate vanadium with ammonium sulfate solution recovered from the wastewater system.The waste liquid after vanadium precipitation is used to recover tungsten and molybdenum metals,The secondary alkaline roasting is used to recover the metal aluminum in the leaching residue,and the by-product Aluminium hydroxide is obtained by wet leaching and three-way evaporation.
作者
石杰
SHI Jie(Sichuan Metallurgical Design&Research Institute,Chengdu 610041,China)
出处
《四川有色金属》
2023年第3期67-70,共4页
Sichuan Nonferrous Metals
关键词
废催化剂
协同处置
回收利用
spent catalyst
collaborative disposal
recycle
