Method for separating vanadium and chromium from high-chromium vanadium slag

• Main Authors: YAN BAIJUN, LI YOUYU, LI MING, GAO GUANJIN, MIAO QINGDONG
• Format: Patent
• Language: Chinese; English
• Published: 31.03.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a method for separating vanadium and chromium from high-chromium vanadium slag, and relates to the technical field of chemical engineering. According to the method disclosed by the invention, the high-chromium vanadium slag is taken as a main raw material, and a mode of combining calcification roasting and tailing slow-cooling roasting is adopted, so that the purity of V2O5 and the recovery rate of chromium are remarkably improved, efficient, simple, convenient and rapid separation of vanadium and chromium in the high-chromium vanadium slag is realized, and the final purity of V2O5 can reach 98.3%; the recovery rate of chromium can reach 95%, and the purpose of green and clean separation of vanadium and chromium is achieved. 本发明提供了一种高铬型钒渣中分离钒铬的方法，涉及化工技术领域。本发明以高铬型钒渣为主要原料，采用钙化焙烧-尾渣缓冷焙烧相结合的方式，显著提高了V2O5纯度与铬的回收率，实现了高铬型钒渣中钒铬的高效、简便、快捷分离，最终V2O5纯度可达98.3％；铬的回收率可达95％，实现了绿色清洁分离钒铬的目的。