中温煅烧分离回收钒冶炼废渣硫酸铵与硫酸钠

发布时间：2018-03-23 18:54

  本文选题：化学分离工程　切入点：硫酸钠　出处：《深圳大学学报(理工版)》2017年06期

【摘要】：以攀枝花炼钢厂沉钒废渣(提取钒后冶炼废渣)为原料,采用预处理、中温煅烧和回收硫酸钠硫酸铵处理工艺,探讨原料水分及颗粒大小、煅烧温度、煅烧时间以及搅拌次数等对硫酸钠和硫酸铵混合结晶物产品纯度及有效回收率的影响.通过正交试验,确定了比较理想的分离回收工艺条件为:干燥温度120℃,干燥时间1 h,干燥后原料中水分可由18.9%降至5.0%;煅烧温度为400℃,煅烧时间3 h,搅拌3次.分离所得硫酸钠和硫酸铵的纯度分别可达到90.56%和94.41%,有效回收率分别为91.31%和21.51%.通过此方法分离产物硫酸铵与硫酸钠可用作生产原料,实现固废资源化,避免环境污染.
[Abstract]:The vanadium precipitated waste residue of Panzhihua steelmaking plant was used as raw material, pretreatment, medium temperature calcination and recovery of sodium sulfate ammonium sulfate were used to discuss the moisture content and particle size of raw material, calcination temperature, etc. The effects of calcination time and stirring times on the purity and effective recovery rate of sodium sulfate and ammonium sulfate mixed crystal products were studied. The optimum separation and recovery conditions were determined by orthogonal test: drying temperature 120 鈩，

本文编号：1654747