STUDY ON TREATMENT OF AMMONIA LEACHING SLAG IN THE METALLURGICAL PROCESS OF TUNGSTEN
来源期刊:中南大学学报(英文版)1995年第2期
论文作者:Sun Peimen Li Honggui Li Yunjiao Liu Maosheng Su Pengtuan Wei Zhiquan Jian Detai
文章页码:21 - 26
Key words:ammonia leaching slag; mechanically activated decomposition; sodium carbnate; leaching efficiency
Abstract: The research of recovering WO3 from ammonia leaching slag in the extractive process of tungsten has been performed. The results show that the mechanically activated decomposition with Na2CO3 for ammonia leaching slag is feasible. After the treatment of ammonia leaching slag containing WO3 10%, the content of insoluble WO3 in residue is 1 % ~2%and the tungsten recovery is 81 % ~ 90% when the total amount of Na2CO3 and NaOH is 4 times of their theoretical value and the slag is kept for 2 hours at 190 ℃. The obtained Na2WO3 solution can satisfy the requirements of subsequent production process after purification.