發(fā)布時間：2018-05-21 08:47

  本文選題：廢陰極炭塊 + 氟化物�。� 參考：《無機鹽工業(yè)》2017年05期

【摘要】：以廢陰極炭塊為原料,通過成分分析,研究了不同液固比以及浸出時間對氟化物浸出效果的影響,并選取氯化鈣作為氟化物回收藥劑,研究了不同pH、藥劑用量、反應時間、反應溫度對回收效果的影響,還探討了不同浸出次數(shù)對氟化鈣產量以及浸出殘渣的成分影響。結果顯示,在液固比為8∶1、浸出時間為15 min的浸出條件下,采用浸出液初始pH,添加理論需要的CaCl_2·6H_2O用量,反應時間為45 min,反應溫度為100℃可以達到氟化鈣的最佳回收效果,且最多進行2次浸出回收,殘渣中石墨的純度隨著浸出次數(shù)的增加逐漸增大。
[Abstract]:The effects of different liquid-solid ratio and leaching time on the leaching efficiency of fluoride were studied by using waste cathode carbon block as raw material, and calcium chloride was selected as the recovery reagent of fluoride. The different pH, dosage and reaction time of fluoride were studied. The effect of reaction temperature on recovery efficiency and the effect of different leaching times on the yield of calcium fluoride and the composition of leaching residue were also discussed. The results showed that under the conditions of liquid-solid ratio of 8: 1 and leaching time of 15 min, the optimal recovery effect of calcium fluoride could be achieved by using the initial pH of leaching solution, adding the amount of CaCl_2 6H_2O needed in theory, reaction time of 45 minutes and reaction temperature of 100 鈩，

本文編號：1918523