论文部分内容阅读
针对硫酸溶液可以有效洗脱树脂上的氰化物和锌,但不能洗脱铜的工艺问题,选择氨水溶液对酸洗后201×7树脂上的铜进行解吸;试验研究了解吸过程的时间、温度以及超声波作用等条件对解吸率的影响,并进行了X射线荧光分析。试验结果表明,在25℃时,8%的氨水溶液可以有效解吸酸洗后201×7树脂上负载的铜,解吸率可以达到85%,解吸速率常数k=4.93×10-4/s,解吸过程的表观活化能为12.058kJ/mol。
Aiming at the problem that the sulfuric acid solution can effectively elute the cyanide and zinc on the resin but can not elute the copper, the ammonia solution is used to desorb the 201 × 7 resin after acid pickling. The time and temperature of the desorption process And the effects of ultrasound on the desorption rate and other conditions, and X-ray fluorescence analysis. The results show that at 25 ℃, 8% aqueous ammonia solution can effectively desorb copper loaded on 201 × 7 resin after pickling, the desorption rate can reach 85%, the desorption rate constant k = 4.93 × 10-4 / s, desorption The apparent activation energy of the process is 12.058kJ / mol.