产品详细

　　D402是一种亚氨基二乙酸型螯合树脂。由于具有特别设计的孔结构，该树脂不但具有很高的交换容量，而且具有优良的机械强度。D402螯合树脂已经广泛应用于氯碱行业二次盐水精制、碳酸锂去除钙镁、有色金属吸附回收、以及各种废水的重金属去除处理等等。

　　D402 is an iminodiacetic acid chelating resin. Because of its specially designed pore structure, this resin has not only high capacity, but also excellent mechanical strength. Because of this, D402 has been widely used in brine purification in chlor-alkali industry, calcium and magnesium removal from LiHCO3, nonferrous metal adsorption and recovery, and heavy metal removal from various waste waters, etc.

　　树脂的物化性能指标(Physical and Chemical Properties)

　　企业标准(Enterprise Standard)

　　Q/320281NAN 07-2018

　　树脂再生方法(Regeneration Method)

　　D402螯合树脂可以在大量单价金属离子存在的溶液中吸附两价以上的金属离子， 可以单柱使用，也可以两柱串联使用，两柱串联时树脂的工作交换容量会更高而且去除 率也更高。当树脂吸附泄漏超标后，需要进行再生。D402螯合树脂的再生一般是先用 酸洗脱吸附的金属离子，再将树脂用氢氧化钠转为钠型使用。酸洗脱剂以选择硫酸或盐酸，根据目的的不同，其浓度可以在3-15%之间变化。但是，当洗脱过程可能有沉淀形成风险的时候(如形成硫酸钙)，则要慎重选择。

　　D402 iminodiacetic acid chelating resin can adsorb metal ions with two and/or two plus valent in the presence of large amount of monovalent metal ions. The resin can be used in single column or two columns connected in series. The later will give the resin a higher capacity and a better removal efficiency. When exhausted, D402 should be eluted first with acid, and then be converted into Na-form for next run. The acid used could be sulfuric acid or hydrochloric acid. According to different applications, the concentration of the acid used could be in the range of 3-15%. However, when there is risk of precipitation (such as CaSO4), the acid used should be carefully selected.

　　树脂动力学性能(Hydraulic Characteristics)

　　包装(Packing)

　　25Kg、25L编织涂膜袋，或1立方大包。

　　25Kg, 25L woven coating bag, or 1 cubic bag.