论文部分内容阅读
由于湿法磷酸中Fe~(3+)、Ca~(2+)的存在会影响湿法磷酸及后续磷酸盐的正常生产及产品质量,研究了一种新型离子交换树脂(IER-FC)对湿法磷酸中的Fe~(3+)、Ca~(2+)的吸附特性,包括对Fe~(3+)、Ca~(2+)的荷载量,反应时间、反应温度对吸附净化效果的影响,对Fe~(3+)、Ca~(2+)的吸附选择性。结果表明,IER-FC对Fe~(3+)、Ca~(2+)载荷量分别为2.219、1.289 mg/g,Fe~(3+)、Ca~(2+)在10 min内达到吸附平衡,反应温度对净化效果的影响较小,对Ca~(2+)的吸附选择性高于Fe~(3+)。
Because of the presence of Fe 3+ and Ca 2+ in wet-process phosphoric acid, the normal production of wet-process phosphoric acid and subsequent phosphate and the quality of products are affected. A new ion exchange resin (IER-FC) Adsorption characteristics of Fe ~ (3 +) and Ca ~ (2+) in wet-process phosphoric acid, including adsorption capacity of Fe ~ (3 +) and Ca ~ (2+), reaction time and reaction temperature On the adsorption of Fe ~ (3 +), Ca ~ (2+). The results showed that the loadings of Fe ~ (3 +) and Ca ~ (2+) were 2.219 and 1.289 mg / g respectively for Fe ~ (3 +) and Ca ~ (2+) The equilibrium temperature and reaction temperature have little effect on the purification effect, and the adsorption selectivity to Ca 2+ is higher than that of Fe 3+.